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Specifications
Reference: City of Tigard Permit Drawings. BUP2006 -00284 - Phoenix Inn building 2 - 9575 SW Locust As per our previous conversations... During the exterior renovation work, the contractor discovered three steel "fire assemblies" (covered parking areas) that express dry-rot damage and require partial replacement. They are: A. 2 -hour/ floor - ceiling assembly B. 2 -hour/ steel column enclosure C. 2 -hour/ steel beam enclosure We propose to replace the damaged assemblies per specific UL Design Listings as follows: A. 2 -hour/ floor - ceiling assembly: UL Design No.1511 B. 2 -hour/ steel column enclosure: UL Design No. X528 In addition, we propose to replace the following assembly with a modified UL assembly: C. 2 -hour/ steel beam: U L Design No.N502, similar (modified at top of beam). Please see attached sketch. The proposed assembly meets or exceeds the original City of Tigard Permit Drawings. * *Submitted under OSSC 104.10 Alternative materials, design and methods of construction and equipment. The alternative material, design and /or method of construction is approved. The proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, or the purpose intended, as sears to be at least the equivalent of that prescribed in . ' .. .. . ' . . • . a • • 1"9"." e VSH Notes: In addition, "draft stops" will be provided at perpendicular beam assemblies to match the adjacent UL assembly and as required by the building code. Please advise us if this provides sufficient information to evaluate our proposal. Thank you for your consideration and response to this matter. Robert L. Brendle AIA, project architect William Wilson architects teNes\ 141"14141fr 1010 sw 11 th avenue, portland, oregon 97205 6%N.1 �e �°• tel 503.223.6693 (x19) S0 ' '1,/64) � 4� fax 503.274.0052 �` NO ; `/ (p rbrendle @ wwarchitects.com S�5 O4C' • 2002 FIRE RESISTANCE DIRECTORY RECE!a "7 ' OCT 1 9. -.- 362 FIRE RESISTANCE RATINGS - ANSI/UL 263 (BXUV) FIRE RESISTANCE RATINGS • ANSWL 263 (BAN) 2. Building Paper— Commercial rosin - sized, 0.010 in. thick. applied to the entire surface of Classified veneer baseboard. Joints rein - 3. Subflooring — 1 by 6 in. T &G, fastened diagonally to joists. forced. 4. Cross Bridging — 1 by 3 in. Note — Local authorities having jurisdiction should be consulted for 5. Wood Joists — 2 by 10 in., spaced 16 in. O.C., firestopped. fuestopping between joists and back of wallboard at area limits. 6. Resilient Channels— Formed of 25 MSG gale steel, spaced 24 in. O.C. 'Bearing the UL Classification Mark perpendicular to joists and located 12 in. from each side edge of base • layer wallboard. Channels placed with 1/8 in. clearance at the ends Design No. L511 and fastened to each joist with 1 -7/8 in. long Type S screws. Min end Unrestrained Assembly Rating — 2 Hr. clearance of channels to walls: 3/8 in. Additional channels 60 in. long, Finish Rating — 71 Min. placed adjacent to existing channels at end joints of second layers, and secured with 1 -7/8 in. long Type S screws driven through wallboard j '' � * O 0 0 0 0 •e*� �� n..* into joists. Channel ends to extend 6 in. beyond each side of joint. � t - -� 6A. Steel Framing Members (Not Shown)* — As an alternate to Item 6, T. /,� furring Members as 0 O O O g L ._ /r!/ � % ii ' �S��GElt n g channels and Steel Framin g s d e scribed below: a. Furring Channels — Formed of No. 25 MSG galv steel. 2 -3/8 in. wide by 7/8 in. dee P P , s aced 24 in. QC perpendicular to joists. Channels °�_°°° -°°°°� �"` P rp 1 T tseasnea secured to joists as described in Item b. Ends of adjoining channels' 77 Mr O —'! ja t^'. O fed Mat o.mu overlapped 6 in. and tied together with double strand of No. 18 SWG —11---. 12 gale steel wire near each end of overlap. 1, 2, 3.Flooring Systems The finish flooring (Item 1), vapor retarder b. Steel Framing Member? — used to attach furring channels (Item a) (Item 2) and the subflooring (Item 3) may consist of any one of the fol- to joists (Item 5). Clips spaced 48 in. OC., and secured to alternating lowing systems: joists with No. 8 x 2 -1/2 in. coarse drywall screw through the center System No. l grommet. Furring channels are friction fitted into dips. Adjoining than- Finish Flooring —1 by 3 in. T & G and end matched; laid perpen- nels are overlapped as described in Item a. Additional clips required to dicular to joists. hold furring channel that supports the wallboard butt joints, as P Vapor Retarder — Commercial rosin -sized building paper, 0.010 in. described in Item 7. PAC INTERNATIONAL—Type RSIC -1. thick 7. Gypsum Board * — 2 layers, 1/2 in. thick, 4 ft wide. When resilient Subflooring — 1 by 6 in. T& C, fastened diagonally to joists. channels (Item 6) are used, first layer installed perpendicular to joists System No. 2 with end joints located over bottom of joists Attached to joists with 6d Finish Flooring — Floor Topping Mixture* — 6 gal max of water to cement coated cooler nails spaced 1 in., 6 in. and 21 in. from each side 100 lbs of floor topping mixture. Compressive strength 1500 psi min. edge in the field of the board. Butt edges occurring under joists, fas- Thickness 3/4 in. min when used with 19/32 in. thick wood structural tened with nails spaced 1 in. 6 in., 15 in. and 21 in. from side edges of panels; or 1 in. nun when used with 15/32 in. thick wood structural board, and 1/2 in. back from butt edge. Second layer of wallboard panels. secured to resilient channels with 1 in. long Type S screws spaced 12 in. UNITED STATES GYPSUM CO — Levelrock 2500, Levelrock OC with additional screws placed 3 in. from each side edge. End joints RH of second layer not aligned with end joints in first layer, and fastened Vapor Retarder — (Optional) — Commercial asphalt saturated felt to additional resilient thannel as shown in end joint detail. Screws 0.030 in. thick. located 3/4 in. and 1-1/4 in. from side and butt edges of boards. When Steel Framing Members (Item 6A) are used, sheets installed with Subflooring —15/32 or 19/32 in. thick wood structural panels, min long dimensions parallel with joists. Base layer attached to the furring grade "C D" or "Sheathing". Face grain of plywood or strength axis of channels using in. lon Type S bugle -head steel screws spaced 8 in. OC panels to be perpendicular to joists with joints staggered. along butted end joints and 12 in. OC in the field of the board. Butted end Floor Mat Material? (Optional) — Floor mat material nom 0.4 in. joints shall be staggered min. 2 ft. within the assembly, and occur midway thick loose laid over the subfloor. Floor topping thickness a min 1 in between the continuous furring channels. Each end of the gypsum board over the floor mat. shall be supported by a single length of furring channel equal to the width UNITED STATES GYPSUM CO — Type USG Sound Mat of the wallboard plus 6 in. on each end. The furring channels shall be System No. 3 spaced approximately 3-1/2 in. OC, and be attached to underside of the Finish Flooring — Floor Topping Mixture* — 8 gal max water to 80 joist with one RSIC -1 dip at each end of the channel. Butted base layer end lbs min of floor topping mixture to 220 lbs max of sand. Compressive joints to be offset a minimum of 24 in. in adjacent courses. Outer layer strength to be 1500 psi min. Thickness to be 3/4 in. min when used attached to the furring channels using 1 -5 /8 in. long Type S bugle -head with 19/32 in. thick wood structural panels 1 in. min when used with steel screws spaced 8 in. OC at butted joints and 12 in. OC in the field. 15/32 in. thick wood structural panels. Butted end joints to be offset a minimum of 8 in. from base layer end UNITED STATES GYPSUM CO — Levelrock 2500, Levelrock joints. Butted side joints of outer layer to be offset minimum 18 in. from RH butted side joints of base layer. Vapor Retarder — (Optional) — Commercial asphalt saturated felt AMERICAN GYPSUM CO —Types AG-C, AGX-C 0.030 in. thick. BPB AMERICA INC Subflooring — 15/32 or 19/32 in. thick wood structural panels, min BPB CELOTEX —Type FRP. CANADIAN GYPSUM COMPANY —Type C, IP -X2, 1PC -AR. grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of CONTINENTAL GYPSUM COMPANY —Types CG5-5, CG -C, panels to be perpendicular to joists with joints staggered. CGTC -C. Floor Mat Material? (Optional) — Floor mat material nom 0.4 in. G-P GYPSUM CORP, SUB OF thick loose laid over the subfloor. Floor topping thickness a min 1 in. GEORGIA - PACIFIC CORP —Type 5. over the floor mat. j JAMES HARDIE GYPSUM INC —Type Max "C" . UNITED STATES GYPSUM CO — Type USG Sound Mat LAFARGE NORTH AMERICA INC —Types LGFC -C, LGFC- System No. 4 C /A. Subflooring —19/32 in. thick wood structural panels, min grade NATIONAL GYPSUM CO —Type FSW -C. "Underlayment" or "Single Floor ". Face grain of plywood or strength PABCO GYPSUM, DIV OF axis of panels to be perpendicular to joists with joints staggered. PACIFIC COAST BUILDING PRODUCTS INC —Type PG-C. Vapor Retarder — Optional - Commercial, rosin -sized building paper STANDARD GYPSUM L L C —Type SG-C. 0.010 in. thick. TEMPLE- INLAND FOREST PRODUCTS CORP Type TG -C. Subflooring —15/32 in. thick wood structural panels, min grade "C- UNITED STATES GYPSUM CO —Types C, IP -X2, MC -AR. D" or "Sheathing". Face f [ axis of panels to USG MEXICO S A DE C V —Types C, IP -X2, IPC -AR. g' am o P Y wood or strength P 8. Screw, Type S (Furring Channel) — Case- hardened steel, 1 -7/8 in. be perpendicular to joists with joints staggered. long, 0.150 in. diam shank, diamond point, 0.335 -in. diam Phillips -type System No. 5 head. Finish Flooring -Floor Topping Mixture* —10-13 gal of water to 170 9. Screw, Type S (Wallboard) — Case - hardened steel, 1 in. long, 0.150 in. lbs of floor topping mixture to 595 lbs of sand. Compressive strength diam shank, self - drilling and self - tapping, 0.335 in. diam Phillips -type 900 psi min. Thickness to be 3/4 in. min when used with 19/32 in. head. thick wood structural panels, and 1 in min when used with 15/32 in. 10. Finishing System — (Not Shown) — For wallboard. Paper tape thick plywood wood structural panels. embedded in cementitious compound over joints and exposed screw ORTECRETE CORP —Type II. heads covered with compound, with edges of compound feathered out. Subflooring — 15/32 or 19/32 in. thick wood structural panels, min As an alternate, nom 3/32 in. thick gypsum veneer plaster may be grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of LOOK FOR THE UL MARK ON PRODUCT • 2002 FIRE RESISTANCE DIRECTORY FIRE RESISTANCE RATINGS - ANSI/UL 263 (BXUV) FIRE RESISTANCE RATINGS - ANSUUL 263 (BXUV) 363 panels to be perpendicular to joists with joints staggered. thick adhered to sub -floor with Maxxon Floor Primer. Primer to be System No. 6 applied to the surface of the mat prior to lath placement. Finish Flooring — Floor Topping Mixture* — Foam concentrate MAXXON CORP —Type Acousti-Mat. mixed 40:1 by volume with water and expanded at 100 psi through Metal lath — For use with floor mat material, 3/8 in. expanded galva- nozzle. Mix proportions 1.4 cu /ft of preformed foam to 94 Ibs Type I nized steel diamond mesh, 3.4 lbs /sq yd placed over the floor mat Portland cement and 300 lbs of sand with 5-1/2 gal of water. Cast den- material. Floor topping thickness a nom 1 in. over the floor mat. sity of floor topping mixture 100 plus or minus 5 pcf. Min compressive Alternate Floor Mat Materials* — (Optional) — Floor mat material strength 1000 psi. Thickness 1-1/2 in. nom 1/4 in. thick loose laid over the subfloor. Maxxon Floor Primer to ELASTIZELL CORP OF AMERICA —Type FF. be applied to the surface of the mat prior to the floor topping place - Vapor Retarder — (Optional)— Commercial asphalt saturated felt, ment. Floor topping thickness a min 1 in. over the floor mat. 0.030 in thick. MAXXON CORP — Type Acousti-Mat II. Subflooring —15/32 in. thick wood structural panels, min grade "C- Vapor Barrier — (Optional) — Commercial asphalt saturated felt 0.030 D" or "Sheathing". Face grain of plywood or strength axis of panels to in, thick. be perpendicular to joists with joints staggered. Subflooring — 15/32 or 19/32 in. thick wood structural panels, min System No. 7 grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of Finish Flooring — Floor Topping Mixture' — 6.8 gal water to 80 lbs panels to be perpendicular to joists with joints staggered. bag of floor topping mixture to 1.9 cu ft of sand. Compressive strength System No. 12 to be 1100 psi min. Thickness to be 3/4 in. min. When used with 19/32 Finish Flooring Floor Topping Mixture' — 4 to 7 gal of water in. thick wood structural panels or 1 in. min when used with 15/32 in. mixed with 80 lbs of floor topping mixture and 1.4 to 1.9 cu ft of sand. thick wood structural panels. Compressive strength to be 1200 psi min. Thickness to be 3/4 in. min HACKER INDUSTRIES INC— Firm -Fill, Firm -Fill 2010, Firm - when used with 19/32 in. thick plywood sub-flooring or 1 in. min Fill High Strength, Gyp -Span Radiant. P Yn Floor Mat Materials* — (Optional)— Floor mat material nom 1/4 in. when used with 15/32 in. thick plywood sub - flooring. thick adhered to subfloor with Hacker Floor Primer. Primer to be RAPID FLOOR SYSTEMS —Type RE RFP or RFU. applied to the surface of the mat prior to the placement of a min 1-1/2 Floor Mat Material* — (Optional) — Floor mat material nom 1/4 ih. in. of floor - topping mixture. thick adhered to sub -floor with Maxxon Floor Primer. Primer to be HACKER INDUSTRIES INC —Type Sound -Mat. applied to the surface of the mat prior to lath placement. Vapor Barrier — (Optional)— Commercial asphalt saturated felt 0.030 MAXXON CORP —Type Acousti -Mat. in. thick. Metal lath — For use with floor mat material, 3/8 in. expanded galva- Sub,00ring — 15/32 or 19/32 in. thick wood structural panels, min nized steel diamond mesh, 3.4 lbs /sq yd placed over the floor mat grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of material. Floor topping thickness a nom 1 in over the floor mat. panels to be perpendicular to joists with joints staggered. Alternate Floor Mat Materials' — (Optional) — Floor mat material System No. 8 nom 1/4 in. thick loose laid over the subfloor. Maxxon Floor Primer to FIoor Topping Mixture* — Foam concentrate mixed 40:1 by volume be applied to the surface of the mat prior to the floor topping place - with water and expanded at 100 psi through a foam nozzle. Mix at ment. Floor topping thickness a min 1 in. over the floor mat. rate of 1.4 cu ft of preformed foam to 94 lbs Type I Portland Cement, MAXXON CORP — Type Acousti-Mat II. 62.5 lb of pea gravel and 312.5 lbs of sand, with approx 5.5 gal of Vapor Barrier — (Optional) — Commercial asphalt saturated felt 0.030 water. Cast density of Floor Topping Mixture 100 (+ or -) 5 pcf. Min in. thiCk• compressive strength 1000 psi. Thickness 1 in. Subflooring — 15/32 or 19/32 in. thick wood structural panels, min LITE -CRETE INC —Type I. grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of Vapor Barrier — (Optional)— Commercial asphalt saturated felt 0.030 panels to be perpendicular to joists with joints staggered. in. thick. System No. 13 Subflooring — 15/32 or 19/32 in. thick wood structural panels, min Finish Floor — Mineral and Fiber Board', sizes ranging from 3 ft. by 4 grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of ft. to 8 ft. by 12 ft., by min 1/2 in. thick. All joints to be staggered a panels to be perpendicular to joists with joints staggered. min. of 12 in. OC with adjacent sub -floor joints. System No. 9 HOMASOTE CO —Type 440 -32 Mineral and Fiber Board Finish Flooring — Floor Topping Mixture' — Foam concentrate System No. 14 mixed 40:1 by volume with water and expanded at 100 psi through a Finish Flooring —Floor Topping Mixture* — 8 gal max of water to nozzle. Mix 94 lbs cement, 300 lbs sand, approx 5.4 gal water, 1.2 car ft 100 lbs min of floor topping mixture to 275 lbs max of sand. Compres - preformed foam, 5 oz Type N fiber and 4 oz Component Z. Cast den- sive strength to be 2100 psi minimum. Thickness to be 1/2 in. mini - sity of floor topping mixture shall be 105 (+ or -) 5 pcf with min cum- mum when used with 19/32 in. thick wood structural panels; or 3/4 pressive strength of 1200 psi. Min thickness shall be 1 in. in. when used with 15/32 in. thick wood structural panels. ELASTIZELL CORP OF AMERICA —Type ZC. UNITED STATES GYPSUM CO — Levelrock 3500 Subflooring — 15/32 in. thick wood structural panels, min grade "C- Vapor Barrier — (Optional)— Commercial asphalt saturated felt 0.030 D" or "Sheathing ". Face grain of plywood or strength axis of panels to in. thick. be perpendicular to joists with joints staggered. Sub - flooring —15/32 or 19/32 in. thick wood structural panels min System No. 10 grade "C -D" or "Sheathing ". Face grain of plywood to be perpendicu- Finish Flooring — Floor Topping Mixture* — 5 to 8 gal of water to lar to joists with joints staggered. 80 lbs of floor topping mixture to 2.1 cu ft of sand. Min compressive Floor Mat Materials* (Optional) — Floor mat material nom 0.4 in. strength 1000 psi. Min thickness of 3/4 in. when used with 19/32 in. thick loose laid over the subfloor. Floor topping thickness a min 1 in. thick plywood sub- flooring or nonveneer APA rated sheathing panels over the floor mat. UNITED STATES GYPSUM CO — Type USG Sound Mat per ABA specifications PRP -I08; or l in. min when used with 15/32 in. System No. 15 thick plywood subflooring or nonveneer APA rated sheathing panels Finish Flooring —Floor Topping Mixture* — 8 gal max of water to per ABA specifications PRP -108. 100 lbs min of floor topping mixture to 275 lbs max of sand. Compres - Vapor Retarder — (Optional) — Commercial asphalt saturated felt sive strength to be 3000 psi minimum. Thickness to be 1/2 in. mini - 0.030 in. thick. mum when used with 19/32 in. thick wood structural panels; or 3/4 Subflooring — 15/32 or 19/32 in. thick wood structural panels, min in. when used with 15/32 in. thick wood structural panels. grade "C -D" or "Sheathing ". Face grain of plywood or strength axis of UNITED STATES GYPSUM CO — Levelrock 4500 panels to be perpendicular to joists with joints staggered. Vapor Barrier — (Optional)— Commercial asphalt saturated felt 0.030 System No. 11 in. thick. Finish Flooring — Floor Topping Mixture* — 3 to 7 gal of water Sub - flooring —15/32 or 19/32 in. thick wood structural panels min mixed with 80 lbs of floor topping mixture and 1.0 to 2.1 cu ft of sand. grade "C -D" or "Sheathing ". Face grain of plywood to be perpendicu- Compressive strength to be 1000 psi min. Thickness to be 3/4 in. min lar to joists with joints staggered. when used with 19/32 in. thick plywood sub - flooring or 1 in. min Floor Mat Materials* (Optional) — Floor mat material nom 0.4 in. when used with 15/32 in. thick plywood sub- flooring. thick loose laid over the subfloor. Floor topping thickness a min 1 in. MAXXON CORP —Type D-C, GC, GC2000, L -R or T -p. over the floor mat. Floor Mat Material* — (Optional) — Floor mat material nom 1/4 in. UNITED STATES GYPSUM CO — Type USG Sound Mat LOOK FOR THE UL MARK ON PRODUCT 2002 FIRE RESISTANCE DIRECTORY 364 FIRE RESISTANCE RATINGS - ANSI /UL 263, (BXUV) FIRE RESISTANCE RATINGS - ANSINL 263 (BXUV) System No. 16 Butted end joints to be offset a minimum of 8 in. from base layer end Finish Flooring — Floor. Topping Mixture* — 3.5 gal max of water to joints. Butted side joints of outer layer to be offset minimum.18 in. from 100 lbs min of floor topping mixture to 100 lbs max of washed silica butted side joints of base layer. sand. Compressive strength to be 3000 psi minimum. Thickness to be BPB AMERICA INC 3/4 in, minimum when used with 19/32 in. thick wood structural pan- BPB CELOTEX -Type FRP. els; or 1 in. when used with 15/32 in. thick wood structural panels. CANADIAN GYPSUM COMPANY —Types C, IP -X2, IPC-AR. UNITED STATES GYPSUM CO — Levelrock SLC CONTINENTAL GYPSUM COMPANY —Types CG5-5, CGTC -C, Vapor Barrier— (Optionall— Commercial asphalt saturated felt 0.030 G -P GYPSUM CORP, SUB OF in. thick GEORGIA- PACIFIC CORP —Type 5. Sub-flooring —15/32 or 19/32 in. thick wood structural panels min JAMES HARDIE GYPSUM INC —Type Max "C" . LAFARGE NORTH AMERICA INC —Type LGFC -C, LGFC- grade "C -D" or "Sheathing ". Face grain of plywood to be perpendicu- C /A. lar to joists with joints staggered. NATIONAL GYPSUM CO — Types FSW -C, FSW-G. Floor Mat Materials* (Optional) — Floor mat material nom 0:4 in. PABCO GYPSUM, DIV OF thick loose laid over the subfloor. Floor topping thickness a min 1 in. PACIFIC COAST BUILDING PRODUCTS INC —Type C. over the floor mat. UNITED STATES GYPSUM CO —Types C, IP -X2, IPC -AR. UNITED STATES GYPSUM CO — Type USG Sound Mat USG MEXICO S A DE C V —Types C, IP -X2, IPC -AR. System No. 17 8. Screw, Furring Channel — Case - hardened steel, 1 -7/8 in. long. 0.150 - Finish Flooring —Floor Topping Mixture* — Foam concentrate mixed in. diam shank, diamond point, 0.335 -in diam Phillips -type head. 40:1 by volume with water and expanded at 100 psi through nozzle. 9. Screw, Wallboard — Case- hardened steel, 1 in. long, 0.150 -in. diam Mix a rate of 12 cu ft of preformed foam to 94 lbs Type I Portland shank, self- drilling and self-tapping, 0.335 -in. diam Phillips -type head. Fiin cement and 300 lbs of sand with 5 -1/2 gal of water. Cast density of 10. ishing System — (Not Shown— Outer layer wallboard joints floor topping mixture 100 plus or minus 5 pcf. Min compressive covered with fiber tape and joint compound. As an alternate, nom 3/32 strength of 1000 psi. Thickness 1 -1/2 in. in. thick gypsum veneer plaster may be applied to the entire surface of CELLULAR CONCRETE L L C ' Classified veneer baseboard. Joints reinforced. Vapor bather — (Optional) — Commercial asphalt saturated felt, *Bearing the UL Classification Mark 0.030 in> thick. Subflooring —15/32 or 19/32 in. thick wood structural panels, mm Design No. 1.512 grade "C -D" or "Sheathing ". Face grain of plywood to be perpendicu- Unrestrained Assembly Rating —1 Hr lar to joists with joints staggered. Finish Rating — 21 Min. 4. Cross>Bridging –= 1 by 3 in. s.. ..iom 3 5. Wood Joists 2 by 10 in. spaced 16 in. OC, Hrestopped. Q' 0 ©. ) 0 u. > D. 6. Resilient Channels — Formed of 25 MSG electrogalvanized steel, .111N■PLIK..1 spaced 24 in. OC perpendicular to joists and located 12 in. from each �'��,'� p long edge of base layer wallboard. Channels placed with 1/4 in. clear- �„ . ance at the ends and fastened to each joist with 1 -7/8 in. long furring -r ��� channel screws. Min end clearance of channels to walls: 3/8 in. Addi tional pieces, 60 in. long, placed immediately adjacent to channels for 1 attachment of end joints of second l yeer, se with 1 -7/8 in. long 1 0 r 0 i2' furring channel screws driven throuB wallboard to joists. Ends to Qs O. extend 6 in. beyond each side of en joint. 6A. Steel Framing Members (Not Shown)* — As an alternate to Item 6, 'y} "��ruz•— furring channels and Steel Framing Members as described below: Site tteir awl p Omit a. Furring Channels — Formed of No. 25 MSG galy steel. 2 -3/8 in wide by 7/8 in. deep, spaced 24 in. OC perpendicular to joists. Chan 1, 2, 3.Flooring Systems The finish flooring (Item 1), vapor barrier nets secured to joists as described in Item b. Ends of adjoining channels (Item 2), and subflooring (Item 3), may consist of any one of the fol- overlapped 6 in. and tied together with double strand of No. 18 SWG lowing systems: gals steel wire near each end of overlap. System No. 1 b. Steel Framing Members* — used to attach furring channels (Item a) Finish Flooring —1 by 3 in. T & G and end matched laid perpendicu- to joists (Item 5). Clips spaced 48 in. OC., and secured to alternating lac to joists, or 19/32 in. plywood, min grade "Underlayment". Face joists with No. 8 x 2 -1/2 in. coarse drywall screw through the center grain of plywood to be perpendicular to joists with joints staggered. grommet. Furring channels are friction fitted into clips. Adjoining than- Vapor Barrier — Commercial rosin- sized, 0.010 in. thick. nels are overlapped as described in Item a. Additional clips required to Subflooring —1 by 6 in. T& G fastened diagonally to joists, or 15/32 hold furring channel that supports the wallboard butt joints, as in. wood structural panels, minimum grade "C -D" or "Sheathing ". described in Item 7. Face grain of plywood or strength axis of panels to be perpendicular PAC INTERNATIONAL — Type RSIC -1. 7. Gypsum Board * — 2 layers, 5/8 in. thick, 4 ft wide. When resilient to' joists with joints staggered. ■ channels are used (Item 6), first layer installed perpendicular to joists System No. 2 with butted end joints of boards located at the joists. Nailed to joists Finish Flooring — Floor Topping Mixture' — 6 gal max of water to with 8d cement coated cooler nails and spaced 7 in. OC in the field of 100 lbs. of floor topping mixture. Compressive strength to be 1500 psi the board. Nails to be 1/2 in. from the butted end joints. min Thickness to be 3/4 in. min. Second layer secured to resilient channels by 1 in. long wallboard screws, UNITED STATES GYPSUM CO — Levelrock 2500, Levelrock RH with long edge perpendicular to the resilient channels, with the center line Vapor Bather — (Optional) — Commercial asphalt saturated felt of boards located under a joist and so placed that the long edge joints are 0.030 in. thick. staggered with the butted end joints of the first layer. Secured to resilient Subflooring —19/32 in. thick wood structural panels, min. grade "C- channels with 1 -in. wallboard screws 12 in. OC. Butted end joints of D" or "Sheathing ". Face grain of plywood or strength axis of panels to wallboard fastened at additional resilient channels as shown in end joint be perpendicular to joists with joints staggered. detail. All screws located 1 and 1 -3/4 in, from the long edges and the Floor Mat Materials* (Optional) — Floor mat material nom 0.4 in. butted end of boards, respectively ., loose laid over the subfloor. Floor topping thickness a min 1 in. When Steel Framing Members (lte 6A) are used sheets installed with over the floor mat. long dimensions parallel with joists. Base layer attached to the furring UNITED STATES GYPSUM CO — Type USG Sound Mat channels using 1 in. long Type S bugle -head steel screws spaced 8 in. OC System No. 3 along butted end joints and i2 in. OC in the field of the board. Butted end Finish Flooring — Floor Topping Mixture — 6 gal max of water to joints shall be staggered min. 2 ft. within the assembly, and occur midway 100 lbs> of floor topping mixture. Compressive strength to be 1500 psi between the continuous furring channels. Each end of the gypsum board min. thickness to be 1 in min. shall be supported by a single length of furring channel equal to the width UNITED STATES GYPSUM CO — Levelrock 2500, Levelrock RH of. the wallboard plus 6 in. on each end. The furring channels shall be spaced approximately 3-1/2 in. OC, and be attached to underside of the Vapor Barrier — (Optional) — Commercial asphalt saturated felt, joist with one RSIC -1 clip at each end of the channel. Butted base layer end 0.030 in. thick. joints to be offset a minimum of 24 in. in adjacent courses. Outer layer Subflooring —15/32 in. thick wood structural panels, min. grade "C- attached to the furring channels using 1 -5/8 in. long Type S bugle -head D" or "Sheathing ". Face grain of plywood or strength axis of panels to steel screws spaced 8 in. CC at butted joints and 12 in. OC in the field. be perpendicular to joists with joints staggered. LOOK FOR THE UL MARK ON PRODUCT 2002 FIRE RESISTANCE DIRECTORY I i 870 FIRE RESISTANCE RATINGS - ANSI/UL 263 (BXUV) FIRE RESISTANCE RATINGS - ANSI/UL 263 (BXUV) Design No. X527 r Ratings- 2,3and4 Hr. jl r II I 1 =._,,.. �; t A A t e Y —, 9 iI �� i r 6 0 l� r © . 1 1611NO Nt1 IN 11111Rfiffir ,�, 3 0 glinlikliiiddifibilikt C D p CORNER DETAILS OF WALLBOARD SUPPORT SYSTEMS WITHOUT STEEL COVERS `� a 1. Steel Column — Min sizes of W- shaped and tubular steel columns which appear in the AISC Steel Construction Manual as shown under 1. Steel Column—. Min size of column, a W8x28 with outside dimen- Item 2. sions of 8 by 6-1/2 in. with a flange thickness of 7/16 in., a web thick- 2- Gypsum Board " — For 1 Hr rating, any 5/8 in. or 1/2 in. thick gyp - ness of 5/16 in. and a cross-sectional area of 8.2.3 s m, sum wallboard Classified for use in fire resistance assemblies. For 2 Hr 2. Spray - Applied Fire Resistive Materials• — See table below for and 3 Hr ratings, any 5/8 in. or 1/2 in. thick gypsum wallboard Classi- appropriate thickness. Applied by mixing with water and spraying in fled for use in other 2 Hr, 3 Hr or 4 Hr Column Designs. one or more coats to steel surfaces which must be clean and free of thickness of layers in inches for the various ratings and m column dirt, loose scale and oil. Min avg and min ind density of 15/14 pcf sizes are as follows: respectively. For method of density determination, see Design Informa- w Shaped 'Latins (Hd Comer Details Far Various Rating Lion Section, preceding these designs. Column Rating Hr Min Thins in. Mm Column 1 2 3 1 Hr JUN Hr 4 2-3/4 She 2 Total thickness (mi) 1 -1/4 W4x13 l 1 -1/2 2 -1 4 B D Ir.asi BEZ A 'i ill ARABIAN VERMICULITE INDUSTRIES —Type MK -5. W10x49 1/2 1-1/8 1 A C GRACE CANADA INC Types MK-4, MK -5. Tube lta. . columns GRACE KOREA INC —Types MK- 6 /CBF, MK -6 /ED, MK -6 /HY, , ' R MK-6s, Monokote Acoustic 1. 8 , y8 D ri PYROK INC —Type LD. by 0.250 5/8 1 -5 /8 2 -1/2 A SOUTHWEST VERMICULITE CO —Types 4, 5, 5EF, 5GP, 5MD, D 8EF, 8GP, BMD, 9EF, 9GP, 9MD. Applied in layers as noted the above illustrations. Bo. • s are to be applied VERMICULITE PRODUCTS INC —Types MK-4, MK -5, VP4, vertically without horizontal joints. W R GRACE & CO - CONN See Gypsum Board (CKNX) category for names of manufacturers. CONSTRUCTION PRODUCTS DIV Types MK 4, MK -5, 2A. Gypsum Board " — As an alternate to Item 2- 3/4 in. thick gypsum wallboard. For 2 Hr rating 1-1/2 in total thickness, installed in accor- MK-6 /HY, MK-6s, Monokote Acoustic 1, RG. 3. Floor and Ceiling Channels — No. 26 MSG, 1 -5/8 in. wide with two dance with corner detail B. For 3 Hr rating, 2 -1/4 in. total thickness 1 -1/8 in. legs. Attached to floor and ceiling with fasteners spaced 12 in. installed in accordance with corner detail C. Boards are to be applied OC. Inner leg of channel to be min of 3/4 in. from outer edge of Spray - vertically without horizontal joints. Applied Fire Resistive Materials. CANADIAN GYPSUM COMPANY —Type IP -X3, ULTRACODE, 4. Corner Channels — No. 26 MSG, 1 -5/8 in. deep with two 1 -3/8 in. ULTRACODE SHC or ULTRACODE WRC legs containing a 1/4 in. flange. Channel web contains 15/16 by 2 -I /2 UNITED STATES GYPSUM CO —Type IP -X3, ULTRACODE, in. rectangular cutouts spaced 16 in. OC. Channels cut 1 in. less in ULTRACODE SHC or ULTRACODE WRC length than assembly height and inserted into floor and ceiling than- USG MEXICO S A DE C V —Type IF'-X3, ULTRACODE nets without attachment ULTRACODE SHC or ULTRACODE WRC 5. Gypsum Board " — 5/8 in. thick, attached to corner channels with 1 in. 3. Steel Stud — 1 -5/8 in. wide with 1 -5/16 and 1 -7/16 in. legs having a I long Type S-12 bugle head, self - drilling, self - tapping screws spaced ver- 1/4- in. folded flange, fabricated from No. 25 MSG galv steel. Length to Holly 12 in. O.C. One fastener to be used at the center of each floor be 1/2 in. less than the assembly height. and ceiling channel. See Gypsum Board (CKNX) category for names of 3A. As. an alternate to Item 3 Steel Framing Members" — galy steel dips manufacturers spaced 4 ft OC and 1 -1/4 in. from top and bottem of column. A No. 28 6. Corner Beads — No. 28 MSG perforated galv steel, 1 -1/4 in. legs. MSG galv steel support angle with 1 -1/4 in. length shall be placed over Attached to wallboard by crimping 6 in. lac. Corner beads covered with joint compound. clips and secured with screws attaching the wallboard. The angle cut 1 "Bearing the Lit Classification Mark in. less than assembly height splices in angle to occur over clips. The clips for use with wide flange columns only. ! Desi I X528 COLUMN & BEAM INC— Types CB, CB1CIips, Rating l nd 3 Hr. 4. Corner Beads — No. 28 MSG galv steel, 1-1/4 in. legs to be attached to the wallboard with No. 6 by.1 in. screws spaced 12 in. OC max. ti TT 5. Tie Wire — No. 18 SWG steel wire spaced 24 in. OC used with second I I I layer of wallboard. , 6. Screws — For attaching first layer of wallboard to steel studs, and 0 t j t I third layer of wallboard to 2 in. by 2 in. steel angle (25 Ga) to be No. 6 by 1 in. (or 1-1/4 in. for 3/4 in. thick wallboard) Phillips head self- = ` J `_ _ drilling, self - tapping double lead screws spaced 24 in. OC For attaching 11"=1) seco layer of wallboard to steel studs and fourth layer of wallboard ' to 2 in. by 2 in. steel angle (25 Ga) to be No. 6 by 1 -3/4 in. (or 2 -1/4 in. © Q 0 for 3/4 in. thick wallboard) steel screws of the same type spaced 12 in. OC For attaching third layer of wallboard to steel studs to be No. 8 by ° 2 -1/4 in. screws of the same type spaced 12 in. OC ' I 7. Finishing System — (Not Shown) — joint compound applied over A 8 corner beads to a thickness of 1/16 in. "Bearing the UL Classification Mark LOOK FOR THE UL MARK ON PRODUCT 2002 FIRE RESISTANCE DIRECTORY — FIRE RESISTANCE RATINGS - ANSI/UL 263 (BXUV) FIRE RESISTANCE RATINGS - ANSVUL 263 (BXUV) 427 3. Drill Screw— No. 8 -18 by 1 /2 -in. long Phillips panhead drill screws, Design No. N502 self- drilling and self - tapping, made of case- hardened steel. 4. Runner Angle — 24 MSG galv steel with 1 and 2 -in. legs. Fastened to Restrained Beam Rating — 2 Hr. steel deck 12 in. O.C. with Item 3. Unrestrained Beam Rating — 2 Hr. 5. Channel Bracket — Fabricated from 25 MSC galv steel, 1-11/16 in. `/ o © , deep with 1 -in. legs and spaced 24 in. O.C. Fastened to the runner angles with Item 3. 6. Corner Angle — Same material as Item 4, fastened to channel brackets © • Nit with Item 3. � a • �� • 7. Gypsum Board * — 5/8 in. thick. First layer fastened with 1 -1/4 in. 1_,,- 0 . long, 0.150 in. diam screws spaced 16 in. O.C. Second layer attached sn with 1 -3/4 in. long, 0.150 in. diam screws spaced 8 in. O.0 Screws are D o • self - drilling and self- tapping Phillips head made of case - hardened steel. ©" AMERICAN GYPSUM CO —Types AG -C, AGX-8, AGX -10, AGX -C . BEI JING NEW BUILDING MATERIALS CO LTD — Type . 0 ,'. ii�� DBX-1. . '� ' 14 BPB AMERICA INC � 0 BPB CELOTEX —Type FRP or SF3. 1 0 CANADIAN GYPSUM COMPANY —Type C, IP -X1, Q' -X2, IPC- aMO + AR, SCX, SHX or WRX. 04500, •1., , W.. Of , py woof;9f4.BFj,r / I&, CONTINENTAL GYPSUM COMPANY —Type CG1 -1, CG-3, 104 CG3 -3, CG5-5, CG6-6, CG9 -9, CGTC -C, CG -C G -P GYPSUM CORP, SUB OF GEORGIA- PACIFIC CORP —Types 5, C, DGG, GPF51, GPFS6. JAMES HARDIE GYPSUM INC —Types Fire X, Max "C' . 0 � LAFARGE NORTH AMERICA INC —Types LGFC3, LGFC6, 0 e 1) LGFC6A, LGFC -C, LGFC -C/ A. NATIONAL GYPSUM CO —Types FSK -C, FSK-G, FSW, FSW -C, Steel Beam — Min size, a W8 x 24 with outside dimensions of 7 -7/8 x FSW -G. 6 -1/2 in. with a flange thickness of 3/8 in., a web thickness of 1/4 in., PABCO GYPSUM, DIV OF and a cross - sectional area of 7.06 sq in. PACIFIC COAST BUILDING PRODUCTS INC —Type C, PG-3 —1. Normal Weight Concrete— 148 - pet. or PG-C. 2.-Steel Hoer and Form Units'— -1 -4-/.2 in. fluted-type, welded to beam,. SIAM GYPSUM INDUSTRY CO LTD —Type EX -1 3. Drill Screw — No. 8 -18 by 1/2 in. long Phillips panhead drill screws, STANDARD GYPSUM L L C —Type SGC, SGC or SGC -G. self- drilling and self - tapping, made of case- hardened steel. TEMPLE - INLAND FOREST PRODUCTS CORP —Type TG-C. 4. Runner Channel — Fabricated from 25 MSG galv steel, 1-11/16 in. UNITED STATES GYPSUM CO —Types C, n' -Xl, IP -X2, IPC- deep with 1 -in. legs. Fastened to steel deck with Item 3, 12 in. OC AR, SCX, Sl.lx, WRX. 5. Channel Bracket — Same material as item 4 and fastened to runner USG MEXICO S A DE C V —Types C, IP -Xl, IP -X2, IPC -AR, channels with Item 3. Bracket spaced 24 in. OC. SCX, XI WRX. 6. Corner Channel — Same material as Item 4. Placed in cutouts of chan- 8. Comer Bead — Fabricated from 20 M5G galv steel to farm an angle nel brackets without attachment with 1 -1/4 in. legs. Legs perforated with 1/4 in. diam holes approx 1 7 • Gypsum Board * — 5/8 in. tltids First layer fastened with 1 -1/4 in. in. DC. Attached to wallboard with special crimping tool approx 6 in. long, 0.150 -in. diam screws and spaced 16 in. OC Second layer OC. As an alternate, the bead may be nailed to the wallboard. attached with 1 -3/4 in. long, 0.150 -in. diem screws spaced 8 in OC. Screws n are self drilling and Phillips head made of case 9. Joint Compound— 1/32 in. thick on bottom and sides of wallboard Paper tape embedded in joint hardened steel. from corner beads and feathered out. Pa P de N AMERICAN GYPSUM CO —Types AG C, AGX -11, AGX -8, compound over joints with edges of compound feathered out. AGX -10, AGX -C . 10. Protective Material — Spray - Applied Fire Resistive Materials* — BPB AMERICA INC Spray applied to the underside of the steel floor units, filling the flutes BPB CELOTEX —Type 1, FRP or SF3. of the units and providing a smooth ceiling which was 1/4 in. thick as BEIJING NEW BUILDING MATERIALS CO LTD — Type measured from the bottom plane of the floor units. DBX -I. See Spray - Applied Fire Resistive Materials (CHPX) category for names CANADIAN GYPSUM COMPANY —Type C, IP -XI, LP-X2, IPC - of manufacturers. AR, SCX, SHX or WRX. 11. Alternate Joint System — (Not Shown) — For lath only. A 1/16 in. CONTINENTAL GYPSUM COMPANY —T es CG1-1, CG -3, thickness of gypsum plaster applied to entire exposed surface over CG3 3, CGS -5, CG6-6, CG9 -9, CGC CGTC C. either paper tape on joints embedded in cementitious compound or 2 G -P GYPSUM CORP, SUB OF 1/2 in. wide glass fiber tape stapled 8 in. OC on joints. GEORGIA-PACIFIC CORP —Types 5, 9, C, UGC, GPF51, 12. Alternate Construction - Steel Framing Members*— As an alternate GPFS6. to Items 3, 4, 5 and 6 steel clips attached to both sides of beam flanges JAMES LAFARGE E NORTH ORR TH AMERO H AMER ICA INC — INC —T Fire X Max" G . 2 ft OC and at ends of beam. First layer of gypsum board fastened Types LGFC3, LGFC6, steel clips with 1 -1/4 in. long Type S drywall screws. 2 in. by 2 in. 25 LT NATIONAL A, LGFC-C, LGFC-C/A, FR or WR MSG angle fastened to clips on bottom portion of assembly with 2 with PABCOGYPS M, DIV OF T long Type S drywall screws. Second layer of gypsum board fastened to PACIFIC COAST BUILDING PRODUCTS INC —Type C, PG-3 angle and steel clips with 2 in. long Type S drywall screws, spaced 2 ft or PG-C_ OC. Screws are self - drilling and self - tapping Phillips head made of SIAM GYPSUM INDUSTRY CO LTD —Type EX -1 case- hardened steel. STANDARD GYPSUM L L C —Type SG-C. COLUMN & BEAM INC — Type CB Clip. TEMPLE- INLAND FOREST PRODUCTS CORP —Type TG-C. *Bearing the UL Classification Mark UNI1b0 STATES GYPSUM CO —Types C, IP -Xl, DP-X2, IPC - AR, SCX, SHX, WRX. WESTROC INC — Type Fi -Rok. USG MEXICO S A DE C V —Types C, IP -XI, IP -X2, IPC -AR, SCX, SHX, WRX. 8. Corner Bead — Fabricated from 20 MSG galv steel to form an angle with 1 -1/4 in. legs. Legs perforated with 1/4 in. diam holes approx 1 in. OC Attached to wallboard with special crimping tool approx 6 in. OC. As an alternate, the bead may be nailed to the wallboard. 9. Joint Compound — 1/32 in. thick on bottom and sides of wallboard from corner beads and feathered out. Paper tape embedded in joint compound over joints with edges of compound feathered out Nom 3/32 in. thick gypsum veneer plaster may be applied to the entire sur- LOOK FOR THE UL MARK ON PRODUCT • $ .° "'.>' ,'..2-1.,,:' .. ,a �r .. T x ra y l �G '` _ - � ■ • ' • 1 r r + v I .': ' • • J i 4y • • 4- .14," : ° .�. r�. :N•.. �. • . r , . ..,. �` /l �l� -"Tax ��' -,.. •C_" ' . 61 1 !�11HlrwYl� : lam— L " ; «�_..r _ 5 •.. , r i. j ..a. t y r E 3 rL• S . �� '4 { • �. = ..� L + ~err • A,. 2z - 't". . . 1 'Il l .. ∎ rte fin`... . t,,i.i I t Ei ... ... _ �� . . .411 . r . » 14.- • ' it ' / 1 .~ 1. �'� . 1 :1. - '.n.�._.. t ? • { µ .h1 1 j F « . {F ' 2.t #�' . , I . t . 1 F f r' ' , • �"' if- r.•:,, •yf ., - y ` a ', • via •, a •. • , ,- 1 c- 211-41Z/1-17-5(- � NN s 'is..,L.:�. J �.' ��� . ^ . • � ?�'• L ,'...:9 '1•"i •,•d• -'-' f lies•.! 1 1 , > `� �'�'� lObb - •••. . ---•-- '"C''''''' i A+. ' rd.. -- 7 - 7"; . .- ...'►T. -.. - ..; w,•,, ...... • r aR�. • -• •,..r0 ..�..: , f r ' ' '. is Z y- , , _ _. »+ �' .. � L r - i .'G • + , . ;" ,�, V'i +I•t'i i 4 �^• , ' � .. of r� -' r' : ` �= ; " .- 1 Z 7.;::—.7------.- ' we ` . i s. �... «r.�,r . . - ,. �� " ` M1 w�t/►`�w.r` "yam „ 'r►•.»"�1ru” ►AIL.. 1�w�a. , ._r te ., 4�ClI►�... ��j� • ti _ . . •- .' p..' • ITi I . . :i '.: . ::* . P 011.' _ ; LIE a .re`�wRC `7r 5 _ . ; 7 1 t /4 - mil. via 1► , �11 :� _ ...,.' . . tl.L . -,s ue- . ; - • •-. -_1-I X - - -'° � - c 1 II C::) . 1i ::-. • 11 ;A/4,-,L J ZOSN di • • l .. Nigissk:r. vs.-4s•• .4r-t .................--79- ei A lP l w 4_, +/- MAX TYPICAL WALL SYSTEM l REPAIR EXISTING EXISTING STRUCTURE ` ... 1 FIREBLOCKING AT FLOOR l U► �� 7 ,4 1 BIM W ' - 2x VERTICAL Q BUMPOUT I 2- '� '.�w, w / - : ':::.;!:11:;:71 i HORIZONTAL FIREBLOCK Cr' 10 0 `' �" �= �_ c"') O.C. MIN, (5/8" TYPE 'X' GWB) - % ,' �� ` � © r . EXISTING STEEL BEAM *- All ' /o 'r'' " - �*' � ~: ° ! —MATCH 4r iii'� ��� f �; � •./ EXISTING "GRACE" MONOCOTE b /CBF 011 r f.. -, t 'f.,:l■ r , F.P. COVERAGE /� ",; r � ;; , EXIST FLOOR JOIST AS REQUIRED BY ......s.,t�A ' ``. : ;V t / : .) MANUFACTURER'S ,' 2 :r : • %1 . • (SOLID BLOCKING ^'' ''' ;:. �� WITH SIMPSON y�I�)I'��•`.<�:.,• -y �� ;. 7 0 , f // � 4 (a � �0 TEST, TYP. y A HANGER �� /��� N .� . ^ ;Y ; x ; •ma •. m - f A /// / /!. / /// / /// // /% fa , 2x SOFFIT ,��� ��,,,�,.�._.__ ~ _ ___ - „�., • PERPENDICULAR ird. c FRAMING W/ L _ �, � f J Fl JOISTS) � p * SIMPSON A35'S — — , SLOPED J- METAL — > EDGE WITH DRIP F.P. COVERAGE AS REQUIRED BY t�-4 MANUFACTURER'S TEST, TYP. FIREPROOFING AT BEAM (REF: 7 —S6) -4— ' 41. A S I # I 1 /2” =1 ' -0" _ _ �� P ...- D6 W AN t"--' W A P HOENIX INN EXTERIOR �� r l ,� RENOVATION PORTLAND, OREGON o i b OCTOBER 24, 2006 J TI GA R D -fh, ()'' 1 OF 2 1 O � williamwilsonarchitects w OF Page 1 of 4 Vat Henzel - RE: Phoenix Inn Exterior Renovations -Fire Rated Assemblies 01$1\i, 0 From: "Robert L. Brendle" <RBrendle@wwarchitects.com> »' L� To: <val @tigard- or.gov> Date: 10/26/2006 4:25 PM AID I Subject: RE: Phoenix Inn Exterior Renovations -Fire Rated Assemblies \ CC: <j.1.matteson@att.net> Val Per our previous conversations...Here is the proposed repair. It utilizes a combination of "spray -on" fire proofing and "fire blocking ". This system exceeds the steel beam fire protection illustrated within the original permit drawings and significantly improves the existing condition. The proposed repair will be limited to those areas that must be rebuilt due to moisture damage. Please let me know if you have any questions. Robert L. Brendle AIA, project architect william wilson architects 1010 sw 11 avenue portland, oregon 97205 tel 503.223.6693 (x19) fax 503.274.0052 rbrendle @ wwarchitects.com Original Message From: Robert L. Brendle Sent: Thursday, October 19, 2006 11:59 AM To: 'val @tigard- or.gov' Cc: 'John Matteson (j.l.matteson @att.net)' Subject: RE: Phoenix Inn Exterior Renovations -Fire Rated Assemblies Val Let me know if you receive the attachment. Thanks Robert L. Brendle AIA, project architect william wilson architects file: / /C:\Documents and Settings \val.000\Local Settings \Temp \GW }00002.HTM 10/27/2006 Page 2 of 4 S 0 1010 sw l l th avenue 0 portland, oregon 97205 p tel 503.223.6693 (x19) fax 503.274.0052 Q rbrendle @ wwarchitects.com 4� Original Message From: Robert L. Brendle Sent: Monday, October 16, 2006 11:17 AM To: 'val©tigard-or.gov' Cc: John Matteson (j.l.matteson @att.net) Subject: RE: Phoenix Inn Exterior Renovations -Fire Rated Assemblies Hello Val Please see the following response to your question concerning fire - blocking and draft - stopping: 1. The intent is to increase the existing fire protection for uncovered steel beams. This increased fire protection will be limited to assemblies that must be rebuilt, due to dry -rot damage. 2. In addition "fire- blocking" as required per code (Section 717) will be provided when it is discovered missing. 3. The permit drawings indicate that the "building is sprinkled ". If this system complies with 903.3.1.1. Then "draft stopping" would not be required (717.3.2). Please verify. In addition, after reviewing all the complexities inherent to a "gypsum- board" rated assembly within existing construction; It has been determined that a "spray on fire protection system" would provide an equivalent or higher degree of protection. See concept sketch attached. Robert L. Brendle AIA, project architect william wilson architects 1010 sw 1 1 th avenue portland, oregon 97205 tel 503.223.6693 (x19) fax 503.274.0052 rbrendle @ wwarchitects.com Original Message From: Robert L. Brendle Sent: Thursday, October 12, 2006 12:10 PM To: 'val @tigard- or.gov' file: / /C: \Documents and Settings \val.000\Local Settings \Temp \GW }00002.HTM 10/27/2006 Page 3 of 4 Subject: Phoenix Inn Exterior Renovations -Fire Rated Assemblies Val Reference: City of Tigard Permit Drawings. As per our previous conversations... During the exterior renovation work, the contractor discovered three steel "fire assemblies" (covered parking areas) that express dry -rot damage and require partial replacement. They are: A. 2 -hour/ floor - ceiling assembly B. 2 -hour/ steel column enclosure c. 2 -hour/ steel beam enclosure We propose to replace the damaged assemblies per specific UL Design Listings as follows: A. 2- hour / floor- ceiling assembly: UL Design No.1511 B. 2 -hour/ steel column enclosure: UL Design No. X528 In addition, we propose to replace the following assembly with a modified UL assembly: • 2 -hour/ steel beam: UL Design No.N502, similar (modified at top of beam). Please see attached sketch. The proposed assembly meets or exceeds the original City of Tigard Permit Drawings. c � s Notes: ett In addition, "draft stops" will be provided at perpendicular beam assemblies to match the adjacent UL assembly and as required by the building code. Please advise us if this provides sufficient information to evaluate our proposal. Thank you for your consideration and response to this matter. Robert L. Brendle AIA, project architect william wilson architects 1010 sw 1 1 th avenue portland, oregon 97205 tel 503.223.6693 (x19) file: / /C:\Documents and Settings \val.000\Local Settings \Temp \GW }00002.HTM 10/27/2006 Page 4 of 4 fax 503.274.0052 rbrendle @ wwarchitects.com file: / /C: \Documents and Settings \va1.000\Local Settings \Temp \GW }00002.HTM 10/27/2006 ER -4607 ES REPORT TM Reissued February 1, 2003 ICBO Evaluation Service, Inc. • 5360 Workman Mill Road, Whittier, California 90601 • www.icboes.org Filing Category: FIRE - RESISTIVE CONSTRUCTION —Other Fire - resistive Construction MONOKOTE FIREPROOFING MATERIALS applied at a minimum rate of 500 square feet per gallon (12.2 m /L) when diluted 1:1 with water, or at 1000 square W. R. GRACE & CO. feet per gallon (24.4 m /L) when applied at full strength. CONSTRUCTION PRODUCTS DIVISION 2.2 Mixing and Densities: 62 WHITTEMORE AVENUE CAMBRIDGE, MASSACHUSETTS 02140 -1692 MK6 /HY, MK -6 /HY ES, MK -6s and Retro-Guard RG are supplied in bags and mixed with approximately 9 gallons 1.0 SUBJECT (34 L) of water per 48 pounds (21.8 kg) of material. Monokote Z -106, Z- 106 /HY, and Z -106/G are supplied in Monokote MK -6 /HY, MK -6 /HY Extended Set (MK -6 /HY bags and mixed with approximately 6 gallons (22.7 L) of ES), MK -6s and Retro - Guard RG Standard Density water per 43 pounds (19.5 kg) of material. Monokote Z -146 Cementitious Fireproofing Materials; Monokote Z -106, Z- is supplied in bags and is mixed with approximately 4 106 /HY and Z -106/G Medium Density Cementitious gallons (15.1 L) of water per 49 pounds (22.2 kg) of Fireproofing Materials; and Monokote Z -146 High Density material. Cementitious Fireproofing Material. These materials have setting characteristics and must be 2.0 DESCRIPTION applied promptly after mixing. Clean equipment must be 2.1 General: used. Monokote MK-6/HY, MK -6 /HY ES, MK 6s, Z 106, Z The materials are mixed in a plaster mixer and then machine- applied through a nozzle, with air pressure and 106 /HY, Z- 106/G, Z -146 and Retro -Guard RG direct -to- steel fireproofing materials are mill -mixed cementitious volume adjusted to provide the proper spray pattern. i Application is achieved by application of one or more coats, materials that are machine applied for fire-resistive menttious and patching may be done by hand. The in-place density protection of structural framing members, concrete pan joists and steel floor or roof sections in all types of required for the fireproofing materials is shown in Table 1. construction. The fireproofing materials have a Class I In -place density must be verified by the method (1997 Uniform Building CodeTM [UBC]) or Class A (2000 prescribed in UBC Standard 7 -6 (UBC) or ASTM E 605 International Building Code [IBC]) flame- spread (IBC). classification and a smoke - developed rating of 50 or less 2.3 Application: when tested in accordance with UBC Standard 8 -1 and ASTM E 84. The fireproofing materials are permitted to be 2.3.1 General: Steel surfaces that are to be protected used within plenums. must be free from substances that may prevent good MK -6 /HY, MK -6 /HY ES, MK -6s, Z106, Z- 106 /HY, Z- adhesion. The materials must be applied to the thickness 106/G, and Z-146 are used for new construction. Retro specified in Tables 2 through 8 of this report, as applicable. Guard RG is used for retrofit spray applications, and turns 2.3.2 Application to Galvanized Steel Floor and Roof to light blue when dry. Z -146 may be used on weather- Units: MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z- 106 /G, Z -106 exposure surfaces as defined in UBC Section 224 or IBC and uninjected Z- 106 /HY may be sprayed directly onto Section 2502. galvanized steel fluted floor units. When applying MK- W. R. Grace & Co. Spatterkote SK -3 is a mill -mixed 6 /HY, MK -6s, MK -6 /HY ES, Z -106/G and RG, all roof units cementitious material applied as a primer to galvanized without concrete topping and all cellular (flat) portions of steel floor or roof metal decks, as specified in Tables 2 galvanized metal decks must first be primed with an through 8 of this report. application of Spatterkote SK -3. The SK -3 application should result in an evenly distributed spattered surface, W. R. Grace & Co. Monokote Accelerator may be added leaving 10 to 30 percent of all deck surface exposed. Over - to MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z106, Z- 106 /HYand spray onto other surfaces is allowed, but is not required. Z -106/G to a maximum percentage of 5 percent by weight, The SK -3 thickness constitutes part of the fireproofing as a field - application aid. thickness. The material is mixed in accordance with the Firebond Bonding Agent and Firebond Concentrate are manufacturer's instructions. manufactured by Fiberlock Technologies, Inc., and are When applying Z -106 or injected or uninjected Z- 106 /HY, bonding agents used when applying injected Z- 106 /HY to all cellular (flat) portions of galvanized metal decks must be bare structural steel shapes or when applying fireproofing lathed with 2.5 -pound -per- square -yard (0.95 kg/m materials to wide- flange structural steel shapes having an diamond -mesh, 3/6 -inch (9.5 mm), expanded metal lath, unknown primed or painted surface in accordance with which must comply with ASTM C 847. Section 2.3.5 of this report. The Firebond material is P5 REPORTS" are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as ANSI endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICBO Evaluation Service, Inc., express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright © 2002 Page 1 of 17 Page 2 of 17 ER -4607 When applying Z -146, all cellular and fluted portions of 25 percent of the width of the oversize flange or web galvanized metal decks must be lathed with 2.5- pound -per- element shall be covered by the metal lath. Minimum metal square -yard (0.95 kg /m diamond -mesh, 3 / 8 -inch (9.5 mm), lath width must be 3 inches (89 mm). expanded metal lath, which must comply with ASTM C 847. Monokote MK-6/HY, MK-6/HY ES, MK 6s, Z-106, Z- Electrical trench headers require the use of steel studs 106 /HY, Z -146 and Retro -Guard RG may be applied and disks when protected with cementitious fireproofing directly to painted or primed joists or girders without the use materials. of mechanical breaks. 2.3.3 Application to Bare Structural Steel Shapes: 2.3.5 Protective Covering: Structural steel members MK -6 /HY, MK6 /HY ES, MK -6s, RG, Z -106, Z -106/G and Z- less than 8 feet (2438 mm) from a floor, landing, or 146 may be sprayed directly onto bare structural steel occupied space, and columns or vertical members to a shapes. Injected Z- 106 /HY must be applied only with height of 8 feet (2438 mm), shall be protected with Firebond bonding agent. Monokote Z -146 at the required thickness, or the exposed 2.3.4 Application to Primed or Painted Structural Steel material must be protected with either furred wallboard, concrete or cement plaster with lath. Shapes: Under the following conditions, MK -6 /HY, MK 6 /HY ES, MK -6s, RG, Z -106, Z- 106 /HY and Z -106/G may 2.3.6 Thickness Tolerance: The thickness tolerances be applied to wide -flange structural steel shapes having an for fire - protection materials are as shown in Sections unknown primed or painted surface: 2.3.6.1 and 2.3.6.2. 1. Beam flange width does not exceed 12 inches (305 2.3.6.1 Minus Tolerance: The thickness must be mm). corrected by applying additional material where the 2. Column flange width does not exceed 16 inches (406 calculated average thickness is less than that required by the recognized design, or where an individual measured mm). thickness reading has a minus tolerance greater than 1 / 4 3. Beam or column web depth does not exceed 16 inches inch (6.4 mm), or more than 25 percent for a design (406 mm). thickness of less than 1 inch (25.4 mm). 4. Bond tests of five specimens in accordance with ASTM 2.3.6.2 Positive Tolerance: An individual measured E 736 verify the bond strength of the fire- protection thickness that exceeds the thickness specified in a design material bonded to a painted or primed 1 / 8 -inch-thick by '/, inch (6.4 mm) or more must be recorded as the (3.2 mm) steel substrate. thickness specified in the design plus' /, inch (6.4 mm). Under the following conditions, Z -146 may be applied to 2.4 Identification: wide - flange structural steel shapes having an unknown primed or painted surface: The fireproofing materials are furnished in bags bearing the W. R. Grace name, the manufacturing location, the product 1. Beam flange width does not exceed 18 inches (457 name, the evaluation report number (ICBO ES ER- 4607), mm). and the Underwriters Laboratories Inc. classification 2. Column flange width does not exceed 18 inches (457 marking. mm). 3.0 EVIDENCE SUBMITTED 3. Beam or column web depth does not exceed 36 inches Data and reports of fire-endurance tests in accordance with (914 mm). the ICBO ES Acceptance Criteria for Spray - applied Fire - 4. Bond tests of five specimens in accordance with ASTM protection Materials (AC23), dated April 2002. E 736 verify the bond strength of the fire - protection 4.0 FINDINGS material bonded to a painted or primed 1 / 8 -inch-thick (3.2 mm) steel substrate. That the Monokote and Retro - Guard cementitious Condition of Acceptance: That the average bond fireproofing materials described in this report comply strength is 20 times the weight of the in -place fire with the 1997 Uniform Building Code (UBC) and the protection material but not less than 150 psf (7182 Pa), or 2000 International Building Code (IBC), subject to the that the average bond strength is 80 percent, with a following conditions: minimum individual bond strength of 50 percent of the bond 4.1 Material application complies with this report and strength of fire - protection material applied to clean, bare, the manufacturer's instructions. 1 / 8 -inch-thick (3.2 mm) steel plate, whichever is greater. Where bond strength values are less than these minimums, 4.2 Exposed beams, columns and ceilings less than Firebond adhesive or another acceptable bonding agent is 8 feet (2438 mm) above the floor are protected in applied to the primed or painted surfaces, and the bond accordance with Section 2.3.5 of this report. strength tests are repeated. 4.3 Measuring methods in UBC Standard 7 -6 (UBC) or Any dimension limits exceeding the maximum values in ASTM E 605 and ASTM E 736 (IBC) are used to condition 1, 2, or 3 of this section (Section 2.3.4) require a verify thickness, density and bond strength of the mechanical break, consisting of one or more minimum 1.7- fire - protection materials. When thicknesses are pound -per- square -yard (0.65 kg /m metal lath strips, or averaged and reported as a single measurement, No. 20 SWG galvanized hexagonal wire mesh each thickness measurement before averaging mechanically fastened to the flange or web either by weld, must be the thickness listed in this report plus or screw or power- actuated fastener. Fasteners are spaced minus '/, inch (6.4 mm) for averaging purposes a maximum of 12 inches (305 mm) on center, on each only. longitudinal edge of the strip, so that the clear spans do not exceed the limits established in condition 1, 2 or 3. At least Page 3 of 17 ER -4607 4.4 The PCI manual "Design for Fire - resistance of required as set forth in UBC Section 1701 or IBC Precast Prestressed Concrete," recognized in Section 1704.11. evaluation report ER -3264, is applicable. This report is subject to re- examination in two years. 4.5 Special inspection performed by a qualified person approved by the building official is TABLE 1 —IN -PLACE DRY DENSITY REQUIRED FOR FIREPROOFING MATERIALS MATERIAL DESIGNATION IN -PLACE DENSITY (pcf) Minimum Average Individual Density MK -6 /HY, MK -6 /HY ES and RG 15 14 MK -6s 19 18 Z -106, Z- 106 /HY and Z -106/G 22 19 Z -146 40 36 For SI: 1 pcf = 16.018 kg /m'. TABLE 2— MINIMUM AVERAGE THICKNESS OF FIRE - PROTECTION MATERIALS APPLIED TO STEEL COLUMNS' A. Wide flange steel columns: Minimum thickness (inches): Al. Fire protection material: MK -6 /HY, MK -6/HY ES, MK -6s, RG, Z -106/G MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. 6.62 5/ 8 3/ 8 3/ 8 3/ e 2.49 1 7 /3 5/3 34 1.44 1 1' /, 1 '/, 0.83 2 13 /4 17 , 3 /4 0.67 2 2 1'/8 34 0.57 3 2 1 7 / 8 0.33 3 2 2 1 A2. Fire protection material: Z -106, Z- 106 /HY MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. 6.62 5 /8 3/ 8 '/4 74 2.49 1'/, '/8 5/8 34 1.44 1'/ 1 1 14 0.83 2 1'/ 11 /3 3/ 4 0.67 2 2 1'/, 3 /, 0.57 3 2'4 15 /, 7 /8 0.33 3'/, 2 2 1'/, A3. Fire protection material: Z -146 MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. 6.62 5 /8 3/ , 3/ e '/ 4 2.49 1'/, '/8 5/8 34 1.44 1' /, 17 , 11 /8 3 /4 0.83 2 1 1 '/ 0.67 2 2 1'/, 3 /, 0.57 3 2 15 /, '/e 0.33 3 2 1' /, 1'/8 Page 4 of 17 ER -4607 B. Hollow shape steel columns: Minimum thickness (inches) B1. Fire protection materials: MK -6/HY, MK -6 /HY ES, MK -6s , RG, Z -106, Z- 106/HY, Z -106/G STEEL TUBE: SIZE (inches) A/P RATIO 4 HR. 3 HR. 2 HR. 1 HR. 3 x 3 x 3 / 16 0.18 NR 3 2 1 4 x 4 x 3/15 0.18 NR 3 2 1 4 x 4 x 1 / 4 0.23 3 27, 17 4 '/8 4 x 4 x 5 / 18 0.29 3 2 1'/ 5 / 8 4 x 4 x 3 /8 0.34 2 17, 11/, 5/8 4x4x 0.44 2 1 1 1 / 2 + STEEL PIPE: SIZE (inches) A/P RATIO 4 HR. 3 HR. 2 HR. 1 HR. 3 dia. x 0.216 Standard 0.20 NR 37 27, 1 4 dia. x 0.237 Standard 0.22 3'/, 2 '/, 1 '/8 4 dia. x 0.337 Extra Strong 0.31 2'/, 2 1 5 / 8 4 dia. x 0.674 Double Extra Strong 0.56 1 1 3/, 3/8+ 5 dia. x 0.258 Standard 0.24 3 2 5 1 3 6 dia. x 0.280 Standard 0.27 3 27, 1 5 3 8 dia. x 0.322 Standard 0.31 2'/, 2 '/, 13 /8 5 /8 10 dia. x 0.365 Standard 0.35 2 17, 11 /4 5/ 8 12 dia. x 0.375 Standard 0.36 2'/, 1 1 '4+ B2. Hollow shape steel columns: Minimum thickness (inches)` Fire protection material: Z -146 STEEL TUBE: SIZE (inches) A/P RATIO 4 HR. 3 HR. 2 HR. 1 HR. 3 x 3 x 3 /,8 0.18 3 2 1'/, 1 4 x 4 x'/,, 0.18 3 2 1'/, 1 4 x 4 x 1 / 4 0.23 3 254 1'/, 7 /8 4x4x 0.29 3 2 1 5 /e 4 x 4 x '/, 0.34 2 17 /8 1 5 /5 4x4x' /, 0.44 2 1'/ 1 1 / 2 STEEL PIPE: SIZE (inches) A/P RATIO 4 HR. 3 HR. 2 HR. 1 HR. 3 dia. x 0.216 Standard 0.20 37, 2 17, 1 4 dia. x 0.237 Standard 0.22 37 251 1 7 /8 4 dia. x 0.337 Extra Strong 0.31 2'/, 2 1 5 / 8 4 dia. x 0.674 Double Extra Strong 0.56 1 11/, 3/ 4 3/ 8 5 dia. x 0.258 Standard 0.24 372 2 1 3 6 dia. x 0.280 Standard 0.27 3'/4 2 1 3 8 dia. x 0.322 Standard 0.31 2'/, 2 1'/, 5 /8 10 dia. x 0.365 Standard 0.35 2 17 /8 11/4 5/8 12 dia. x 0.375 Standard 0.36 2 1' /, 11/, 5/3 For SI: 1 inch = 25.4 mm. + Increase protection thickness by 1 /,, inch for Z- 106 /HY to the nearest' /, inch. 'Fire- resistive protection is applied directly to exposed column contour or column boxed with metal lath. 2 As an alternate to Table 2A, thickness of fireproofing may be determined on the basis of the following equation: h = R/[1.05(W /D) + 0.61] where: R = Fire resistance (hours). h = Thickness of fireproofing, ranging from 0.25 to 3.875 inches. D = Heated perimeter of steel column (inches). W = Weight of steel column (lbs. per lineal foot). Page 5 of 17 ER -4607 Limitations: W/D ratio ranges from a minimum of 0.33 to a maximum of 6.62. Minimum thickness is inch. 'As an alternate to Table 2B1, thickness of fireproofing, may be determined on the basis of the following equation: T = (R - 12.49)1(265.75(A/P)] where: R = Fire resistance (minutes). A = Cross - sectional area (square inches). P = Heated perimeter (inches). T = Thickness of fireproofing, ranging from 0.375 to 3.875 inches. A/P equation for tube columns = t(A + B - 20/(A + B). A/P equation for pipe columns = t(d- where: t = Wall thickness of column. A = Length of horizontal side (inches). B = Length of vertical side (inches). d = Diameter of pipe (inches). Limitations: NP ratio ranges from a minimum of 0.18 to a maximum of 2. Thickness is between '/, inch and 3'4 inches. `As an alternate to Table 2B2, thickness of fireproofing, may be determined on the basis of the following equation: T = (R - 0.2)/[4.43(A/P)] where: R = Fire resistance (hours). A = Cross - sectional area (square inches). P = Heated perimeter (inches). T = Thickness of fireproofing ranging from 0.375 to 3.875 inches. A/P equation for tube columns = t(A + B - 2t) /(A + B). A/P equation for pipe columns = t(d - t) /d. where: t = Wall thickness of column. A = Length of horizontal side (inches). B = Length of vertical side (inches). d = Diameter of pipe (inches). Limitations: NP ratio ranges from a minimum of 0.18 to a maximum of 2. Thickness is between' /, inch and 3' /, inches. 5 NR = Not recognized. TABLE 3— MINIMUM AVERAGE THICKNESS OF FIRE PROTECTION MATERIALS APPLIED TO PROTECTED FLOOR ASSEMBLIES: MK -61HY, MK -6 /HY ES, MK -6s, RG, Z -106, Z- 106 /HY, Z- 106 /G, Z -146 A. Assembly: Protected floor assemblies with minimum 2 inch -thick concrete slab. 1. General description: Steel beams or joists supporting minimum 1 inch -deep steel decking with minimum 2 concrete slab over top of flutes. a. Metal thickness — minimum gage: fluted 22 MSG, cellular 20 /20MSG b. Normal- weight or lightweight concrete slab'. Page 6 of 17 ER -4607 2. Metal decking: Fireproofing thickness (inches). Fire protection material: MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z -146, Z- 106 /HY, Z -106, Z- 106/G. 4 HR. 3 HR. 2 HR. 1HR PARAMETER Lightweight concrete Normal- weight 1 2 concrete 3 3/ 3/ Top and side of flute 1'/ ° e 3 Bottom of flute 1'/, 3 / 4 1 / 2 + 34+ 3/9 Cellular NR NR '/3+ 3/ 34 Note: Spatterkote SK -3 required on cellular decking for MK -6 /HY, MK -6/1-IY ES, MK -6s, Z -106 and RG. Lath is required on cellular decking for Z -106, Z- 106/HY and Z- 106/G. 3. Trench Headers: Fireproofing thickness (inches) 2 BOTTOMLESS TRENCH HEADER: 4 HR. 3 HR. 2 HR. 1HR MAX. 36 INCHES WIDE Top and side of flute NR 27 1 1 Bottom of flute and cellular NR 2'/ 1 1 Cellular NR 27, 1 1 TRENCH HEADER WITH BOTTOM PAN: 4 HR. 3 HR. 2 HR. 1 HR. MAX. 36 INCHES WIDE Top and side of flute NR 2 1'/ 1 Bottom of flute NR 2 1'/ 1'/, Cellular NR 2 1 17 TRENCH HEADER WITH INTERMITTENT BOTTOM PAN: MAX. 36 4 HR. 3 HR. 2 HR. 1 HR. INCHES WIDE Top and side of flute NR NR 2 2 Bottom of flute, cellular NR NR 1 1 4. Electrified inserts: Fireproofing thickness (inches) (1) Insert where concrete is not removed from deck valleys and insert on top ". 4 HR. 3 HR. 2 HR. 1 HR. Normal- weight concrete slab NR 3/, 5/ 51 Lightweight concrete slab NR 11/8 3 3 (2) Inserts which penetrate sides of deck cells, and there is no concrete in valleys between cells under insert' 4 HR. I 3 HR. I 2 HR. I 1 HR. Preset: Dual service Normal- weight concrete slab NR 11/4 '4 72+ Lightweight concrete slab NR 1 3 /, ' / Preset: Triple service Normal- weight concrete slab NR 1'/4 5/e 1 /2+ Lightweight concrete slab NR 1 3 / 4 1/2+ Page 7 of 17 ER -4607 (3) Inserts contain internal modifications and penetrate sides of deck cells where no concrete is in valleys under insert' I 4 HR. I 3 HR. I 2 HR. I 1 HR. Preset: Dual service Normal- weight concrete slab NR 3 / 3 1 / 2 + '/ Lightweight concrete slab NR NR 3/8 1/2+ Preset: Triple service Normal- weight concrete slab NR 3 / 7 ' / 3 / 8 + Lightweight concrete slab NR NR '/ 5 /8 (4) Inserts which penetrate top of deck cells, and there is no concrete in valleys between cells under insert a 4 HR. 3 HR. 2 HR. 1 HR. Preset: Triple service; aluminum plate placed on top of insert Normal- weight or lightweight concrete slab I NR I NR I 3 / 8 I 5/8 Preset: Triple service; zinc plate placed on top, sides or bottom of insert Normal- weight or lightweight concrete slab I NR I 1 I 5 /8 I 3 / 8 B. Assembly: Protected floor assemblies with minimum 2-inch -thick concrete slab. 1. General description: Steel beams supporting minimum 2- inch -deep steel decking with minimum 2- inch -thick concrete slab over top of flute. a. Metal thickness — minimum gage: Fluted 22 MSG, cellular 20 /18MSG. b. Normal- weight or lightweight concrete slab.' 2. Metal Decking: Fireproofing thickness (inches). Fire protection material: MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z- 106 /HY, Z- 106/G, Z -146 and Z -106: NORMAL - WEIGHT CONCRETE SLAB: 4 HR. 1 3 HR. 2 HR. 1 HR. Top and side of flute NR 1'/, 5/8 ' /Z+ Bottom of flute NR 1 5/, 1/2+ Cellular NR 1 7 / 8 1 / 2 + LIGHTWEIGHT CONCRETE SLAB 4 HR. 3 HR. 2 HR. 1 HR. Top and side of flute NR 1'4 1 5 /8 Bottom of flute NR 1'/, 1 5/ Cellular NR 1'/ 1 5/8 C. Construction: Structural members supporting protected floor decks" 1. Floor beams supporting a normal - weight concrete slab or fluted form units with normal- weight concrete topping. Minimum unrestrained fireproofing thickness (inches)°•'°: BEAM SIZE MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. W 8 x 67 1.60 1'/ 3/8 5/8 3/8+ W 10 x 60 1.20 1 1 3 / 4 1 / 2 + W 8 x 28 0.80 1 1 7 / 8 ' / ( ( ( ( VV 8 x 10 0.37 2'/, 1'/, 13 /8 3/4 Page 8 of 17 ER -4607 2. Floor beams supporting mixed /cellular decking with a normal- weight concrete slab ": BEAM SIZE MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. W 8 x 67 1.60 1 1 a /e ' / W 10 x 60 1.20 VI, 1'/, /8 ' /2+ W 8 x 28 0.80 2 17, 7 / 8 ' 1 2 + ( ( * ) ( * ) ( * ) W 8 x 10 0.37 37, 2'/, 1 1 3. Floor beams supporting a lightweight concrete slab or fluted form units with lightweight concrete topping: Minimum unrestrained fireproofing thickness (inches) ° : BEAM SIZE MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. W 8 x 67 1.60 1 1 3/ 8 3/ , W 10 x 60 1.20 1 / 1 '/ '/ W 8 x 28 0.80 17, 1'/, 1 7 ( 4 ( * ) (1 ( /8 W 8 x 10 0.37 1 27 , 11 /2 3/ , 4. Floor beams supporting mixed /cellular decking with a lightweight concrete slab °•'°: BEAM SIZE MINIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. W 8 x 67 1.60 1' / 1 3/, 14+ W 10 x 60 1.20 1 17, 7 / 8 1 / 2 + W 8 x 28 0.80 2 1'4 1 1/2+ ( * ) ( * ) ( * ) ( /e * ) W 8 x 10 0.37 37 2'4 11/, 3/4 5. Floor joists supporting mixed cellular /fluted decking with lightweight or normal- weight concrete slab or with solid concrete slab: JOISTS AND BRIDGING "• WITH OR WITHOUT SPACING 4 HR. 3 HR. 2 HR. 1 HR. LATH, SCRIM OR NET Top and bottom chords consist of two angles with a minimum total area of 0.96 and 0.77 sq. in., respectively. Web members are either round bars or angles. Minimum area for the end diagonal web is 0.444 sq. in. Minimum NA 27, 27, 27, 1'/, area for the first six interior diagonal webs is 0.406 sq. in. All other interior webs have a minimum area of 0.196 sq. in. Top and bottom chords consist of two angles with a minimum total area of 1.74 sq. in. First five web members are either round bars or angles, 0.886 sq. in. NA 2' /, 27, 27 1 All other interior webs have a minimum area of 0.441 sq. in. 10K1 30 ksi More than 4 ft. o.c. NR 37, 2'/, 1' /, 10K1 30 ksi Less or equal to 4 ft. o.c. NR 2'/, 1' /, 1 Min. 16K2 joists with max. 30 ksi tensile stress and for More than 4 ft. o.c. min. 12K3 joists at 24 ksi max. tensile stress NR 27, 1'4 1 Min. 16K2 joists with max. 30 ksi tensile stress and for Less or equal to 4 ft. o.c. min. 12K3 joists at 24 ksi max. tensile stress NR 2'4 1'/ 1 For SI: 1 inch = 25.4 mm. NR = Not recognized NA = Not applicable + Increase thickness by 7,, inch for Z- 106 /HY to the nearest '/ inch. *Protection thicknesses when lower flange edge thickness is reduced to one -half. Page 9 of 17 ER -4607 'Normal-weight concrete has a minimum compressive strength of 3,000 psi and a minimum unit weight of 148 pcf, and utilizes either carbonate or siliceous aggregates. Lightweight concrete has a minimum compressive strength of 3,000 psi and a minimum unit weight of 110 pcf. Concrete shall encapsulate 6 x 6 W1.4 x W1.4 welded wire fabric. 'Fireproofing thickness under bottomless and intermittent trench headers to be 4 inches beyond each side of trench header. Fireproofing thickness under trench headers with bottom pans to be 5 inches beyond each side of trench header. Allowable loads must be based on noncomposite design. 'The cellular (flat plate) portion of units under trench headers shall have welded thereto Nelson steel studs consisting of No. 12 SWG galvanized wire, attached to a 1'/ inch - diameter No. 28 MSG galv. steel disc. Studs to be in rows parallel to the trench. Studs shall average at least one stud per 236 sq. in. of cellular floor units beneath the trench, a maximum of 4 inches from edge of trench header with a maximum of 22 inches between rows and 24 inches between studs. For three -hour protection, the stud length shall be 2'4, inches. For two -hour protection, the stud length shall be 1'/ inches. 'Intermittent bottom trench header consists of a horizontal closure plate (minimum 22 MSG) over the fluted deck section, which is affixed to floor units by welds or screws. Fireproofing thickness for 24- inch -wide intermittent bottom trench headers is 1' /, inches for a two -hour rating. 'Fireproofing thickness for all inserts shall be sprayed the entire width and length of cellular units between supports and shall extend beyond the edge of inserts for a horizontal width of 12 inches. 'Spacing for unused condition shall not be more than one insert for each 6 sq. ft. of floor area, with not less than 30 inches between inserts along deck unit and 18 inches in the transverse direction. Active inserts can not exceed more than one in each 12 sq. ft. Unused inserts are packed with mineral wool block or covered with concrete. 'Spacing shall be not more than one insert in each 77, sq. ft. of floor area, with not less than 25 inches between edges of adjacent inserts. 'Spacing shall not be more than one inset in each 8 sq. ft. of floor area, with not less than 2 feet center -to- center of adjacent inserts. 'Bridging bars and angles shall be protected with the coating material thickness for a minimum distance of 12 inches beyond the insert. "As an alternate to Table 2C, Items 1 through 4, thickness for unrestrained beams may be determined on the basis of the following equation: Ti- [(W2 D2) + O. 617 [(W1/D1) +0.61 where: T = Thickness of fireproofing (inches). W = Weight of steel beam (pounds per lineal foot). D = Heated perimeter of steel beam (inches). 1 = Refers to desired beam size and required material thickness. 2 = Refers to W8x28 beam size and appropriate material thickness in Tables C1 through C4. Limitations: Minimum thickness shall not be less than 3 / 8 inch. W/D ratios shall not be less than 0.37. "Fire- resistive protection is applied directly to exposed beam contour or boxed with expanded metal lath. "Fireproofing shall be applied to joist following joist contour. 1.7 to 3.4 lb. /sq. yd. diamond mesh 3/, -inch expanded steel lath or' / inch to' / -inch fiberglass scrim fabric or 20 mil strand '1, plastic net secured to one side of each steel joist are optional. If metal lath is used, lath is to be fully covered, with no minimum thickness requirement. If fiberglass mesh is used, mesh is not required to be fully covered. "Thickness of fireproofing shall be 17 inches up to 2 -hour rating for min. 16K2 joists with minimum 3 /,- inch - diameter web members or for LH joists. "Min. 5 pcf or less density polystyrene can be used over the deck without affecting the deck or beam protection thicknesses. When other rigid thermal insulations or more than 5 pcf polystyrene is used over the deck, the deck and beam protection thickness must be increased to the next 7 hourly rating using interpolation. As an alternative for floor beam thickness, roof beam thickness can be substituted using the thickness for the same hourly rating. Page 10 of 17 ER -4607 TABLE 4— MINIMUM AVERAGE THICKNESS OF FIRE - PROTECTION MATERIALS APPLIED TO UNPROTECTED FLOOR ASSEMBLIES: MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z -106, Z- 106 /HY, Z- 106 /G, Z -146 1. General description: Steel beams or joists supporting a floor deck with no fireproofing materials applied to the deck soffit. a. Metal thickness minimum gage: Fluted 22 MSG b. Normal- weight or lightweight fire -resistive concrete slab''. Minimum 2 inches of concrete over the top flute with 6 x 6 x 1.4 x 1.4 welded wire fabric for the beam condition. Thickness for the assembly rating is a separate consideration' 2. Floor beams and joists supporting unprotected floor deck: Minimum unrestrained fireproofing thickness (inches)'' `° ° ' BEAM SIZE MAXIMUM W/D RATIO 4 HR. 3 HR. 2 HR. 1 HR. W 8 x 67 1.60 1' / ' / 8 ' /° '/°+ W 10 x 60 1.20 1'/ 1' /, '/ ' / W 8 x 28 0.80 1 6 /, 1'/ 1 1 / 2 + (2') ( * ) ( * ) (' /2 * )+ W 8 x 10 0.37 2'/ 2 1'/, SPACING 4 HR. 3 HR. 2 HR. 1 HR. 10K1 30 ksi More than 4 ft. o.c. NR 3 " 2'/, 1 10K1 30 ksi Less or equal to 4 ft. o.c. NR 2' /, 1'/ 1 Min. 12 K5, max. 24 ksi tensile NA NR 37 2' /, 1 stress Top and bottom chords consist of two angles with a minimum total area of 0.96 and 0.77 sq. in., respectively. Web members are either round bars or angles. Minimum area for the end diagonal web is 0.444 sq. in. NA 27 2'/, 2'/, 1 Minimum area for the first six interior diagonal webs is 0.406 sq. in. All other interior webs have a minimum area of 0.196 sq. in. Min. 16K2 joists with max. 30 ksi tensile stress, and for min. 12K3 More than 4 ft. o.c. NR 3' / 2' /, 1 joists at 24 ksi max. tensile stress Min. 16K2 joists with max. 30 ksi tensile stress, and for min. 12K3 joists at 24 ksi max. tensile stress Less or equal to 4 ft. o.c. NR 2' /, 1'/, 1 For SI: 1 inch = 25.4 mm. NR = Not recognized. NA = Not applicable. *Protection thicknesses when lower flange edge thickness is reduced to one -half. +Increase thickness by '/,, inch for Z- 106 /HY to the nearest' /, inch. 'Normal- weight concrete has a minimum compressive strength of 3,000 psi and a minimum unit weight of 148 pcf, and utilizes either carbonate or siliceous aggregates. Lightweight concrete has a minimum compressive strength of 3,000 psi and a minimum unit weight of 100 pcf. Concrete shall encapsulate 6 x 6 - W1.4 x W1.4 welded wire fabric. 'Minimum concrete slab or fill thickness must be recognized under a current ICBO ES evaluation report for the floor assembly and fire- resistive rating desired. 'As an alternate to Table 3, Item 2, thickness for unrestrained beams may be determined by the following equation: Page 11 of 17 ER -4607 T1– [(W2102) +o.6]r2 [(W 11 D1) +0.6] where: T = Thickness of fireproofing (inches). W = Weight of steel beam (pounds per lineal foot). D = Heated perimeter of steel beam (inches). 1 = Refers to desired beam size and required metal thickness. 2 = Refers to given beam size and material thickness. Limitations: Minimum thickness shall not be less than '/, inch. W/D ratios shall not be less than 0.37. `Thickness of fireproofing shall be 1 inches up to 2 -hour ratings for min. 16K6 joists min.,' /,- inch - diameter web members, or for LH joists extending 12 inches on both sides. 'Fire- resistive protection is applied directly to exposed beam contour or boxed with metal expanded lath. 'Use of 1.7to 3.4 lb /sq. yd. diamond mesh'1, -inch expanded steel lath, of'/,, -inch to'1 -inch fiberglass scrim fabric or20 mil strand' / -inch plastic net secured to one side of each joist is optional. 'Bridging bars or angles shall be protected with the coating material thickness required for a minimum distance of 12 inches beyond the joist. 'Min. 5 pcf or less density polystyrene can be used over the deck without affecting the deck or beam protection thicknesses. When other rigid thermal insulations or more than 5 pcf polystyrene is used over the deck, beam protection thickness must be increased to the next' /, hourly rating using interpolation. As an alternative for floor beam thickness, roof beam thickness can be substituted, using the thickness for the same hourly rating. TABLE 5— CONCRETE PAN JOIST: MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z -106, Z- 106 /HY, Z- 106 /G, Z -146 1. General description: Pan joists, poured in -place normal- weight concrete construction. 1. Minimum total 2' /, -inch thickness with maximum 30 -inch span between joists. 2. Three - fourths -inch minimum concrete cover for joist reinforcement. 2. Fireproofing thickness (inches): PARAMETER 4 HR. 3 HR. 2 HR. 1 HR. Slab soffit NR NR '/ '/ For SI: 1 inch = 25.4 mm. Page 12 of 17 ER -4607 TABLE 6— MINIMUM AVERAGE THICKNESS OF FIRE PROTECTION MATERIALS APPLIED TO STEEL TRUSSES (Inches)' 2 : MK -6 /HY, MK -6 /HY ES, MK -6s, RG, Z -106, Z- 106/HY, Z- 106 /G, Z -146 The thickness of fire protection materials applied to structural steel trusses is determined in accordance with UBC Standard 7 -7, Part I, as follows: Step 1: Determine the W/D ratio for each individual element of the truss. W/D ratios are defined as the weight per lineal foot (W) of the element in pounds divided by the heated perimeter (D) of the element (sides directly exposed to heat in a fire) in lineal inches. The weight -to- heated perimeter (W /D ratio) of truss elements which directly support floor or roof constructions, i.e., top chords, shall be determined on the same basis as for beams and girders. The method to calculate the heated perimeter (D) of the top chord is illustrated in the left hand figure below. The weight-to-heated perimeter ratio (W /D ratio) of truss elements which can be simultaneously exposed to fire on all sides, i.e., webs and bottom chords shall be determined on the same basis as columns. The method to calculate the heated perimeter of the web and bottom chord is illustrated in the right hand figure below. For different shapes not illustrated in the figures below, the same general methodology applies. Step 2: Substitute the W/D ratio for each individual element of the truss into the formula below to determine the thickness of protection required (inches): t = R/[63(W /D) + 37] where: t = Thickness of fireproofing protection (inches). R = Fire resistance (minutes). W = Weight of steel, lbs. /lin. ft. D = Heated perimeter of each truss element (inches)'. Note: Where truss construction includes tube or pipe steel elements, the thickness of protection for the tube or pipe steel shall be taken from Table 1, Item B, of this report. a • — Av d tw • � bl D = 30f +2d -2tw tbf +2d -2tw 'Methodology presented in this table is limited to unrestrained conditions. 'As an alternate to the formula, thickness may be taken from Table 1 columns using the appropriate minimum W/D ratio. 'Minimum chord or web member size has W/D ratio = 0.33. Other steel shapes with W/D ratios greater than 0.33 may be used. `Top flange of the top chord supports concrete slab or steel deck units. Rage 13 of 17 ER -4607 TABLE 7— MINIMUM AVERAGE THICKNESS OF FIRE PROTECTION MATERIALS APPLIED TO PROTECTED ROOF ASSEMBLIES" MK -6 /HY, MK -61HY ES, MK -6s, RG, Z -106, Z- 106 /HY, Z- 106 /G, Z -146 A. Roof assembly with polyisocyanurate Insulation board or mineral and fiber and fiberglass insulation boards. 1. Structural support: Steel beams or joists supporting minimum 1'/ -inch fluted steel decking, minimum No. 22 MSG gage. 2. Wallboard: Five- eighths - inch -thick gypsum board fastened or adhered to metal roof deck under insulation board. 3. Insulation type: a. Polyisocyanurate insulation boards: Minimum 2 inches thick with gypsum wallboard, minimum 3 inches thick without gypsum wallboard; or b. Mineral and fiber board: Minimum thickness 1 inch. Minimum thickness 2 inches when Item 4b or Item 4c is used; or c. Fiberglass insulation board: Minimum thickness 3 /, inches for one hour and 1'/, inches for two hours. Minimum 17, inches when Item 4b or Item 4c is used. d. Polystyrene foamed plastic insulation boards: Minimum thickness 1 inch, maximum thickness 8 inches, and maximum density 2.5 pcf. Insulation boards must be used with' / -thick gypsum wallboard fastened or adhered to metal roof deck under insulation board. 4. Roof covering: a. Hot - mopped or cold- applied Class A, B, or C roof covering. b. Ballasted, adhered or mechanically attached single -ply roof covering. c. Metal roof deck panels in addition to or in lieu of Items 4a and 4b. 5. Fire protection material thickness for unrestrained ratings (inches): PARAMETER 3 HR. 2 HR. 1 HR. Deck without gypsum wallboard 2 1' /, 1 Deck with gypsum wallboard 1 1'', 518 B. Assembly: Extruded polystyrene foamed plastic roof insulation boards. 1. Structural support: Steel beams or joists supporting minimum 1'/ -inch fluted steel decking, minimum No. 22 MSG gage. 2. Wallboard: Five - eighths- inch -thick gypsum wallboard fastened or adhered to metal roof deck under insulation board. 3. Insulation: Extruded polystyrene, minimum thickness 1 inch, maximum thickness 8 inches, and maximum density 2.5 pcf. insulation boards. 4. Roof covering: a. Hot - mopped or cold - applied Class A, B or C roof covering. b. Ballasted, adhered or mechanically attached single -ply roof covering. • Page 14 of 17 ER -4607 5. Fire - protection material thickness for unrestrained rating (inches) PARAMETER 3 HR. 2 HR. 1 HR. Deck with gypsum wallboard NR 1'/ 3 / 4 C. Roof assembly with polyurethane foam plastic roof insulation: 1. Structural support: Steel beams or joists supporting minimum 1'/ inch -deep fluted steel decking, minimum No. 22 MSG gage. 2. Wallboard: Five - eighths- inch -thick gypsum fastened or adhered to metal deck under insulation. 3. Insulation type: Polyurethane foamed plastic formed by the simultaneous spraying of two liquid components applied over the gypsum wallboard at a nominal thickness of 1 to 5 inches. 4. Fire - protection material thickness for unrestrained ratings (inches): PARAMETER 3 HR. 2 HR. 1 HR. Deck with gypsum wallboard 2 2'/ 1 D. Roof assembly with no minimum insulation thickness: 1. Structural support: Steel beams or joists supporting minimum 1'/ -inch fluted steel decking, minimum No. 22 MSG gage. 2. Wallboard: Five - eighths- inch -thick gypsum board fastened or adhered to metal roof deck under insulation board. 3. Insulation: No minimum insulation thicknesses with or without gypsum wallboard. 4. Roof covering: a. Hot - mopped or cold - applied Class A, B, or C roof covering. b. Ballasted, adhered or mechanically attached single -ply roof covering. c. Metal roof deck.panels in addition to or in lieu of Items 4a and 4b. 5. Fire protection materials: MK -6 /HY, MK -6s, MK -6 /HY, ES, RG, Z -106, Z- 106 /HY, Z- 106/G. 6. Fire protection material thickness for unrestrained ratings (inches): PARAMETER 3 HR. 2 HR. 1 HR. Deck without gypsum wallboard 3 2 17 Deck with gypsum wallboard 3 2 1 E. Roof assembly with no minimum insulation thickness: 1. Structural support: Steel beams or joists supporting minimum 1'/ -inch fluted steel decking, minimum No. 22 MSG gage. 2. Wallboard: Five - eighths- inch -thick gypsum board fastened or adhered to metal roof deck under insulation board. 3. Insulation: No minimum insulation thicknesses with or without gypsum wallboard. 4. Roof covering: a. Hot - mopped or cold - applied Class A, B, or C roof covering. b. Ballasted, adhered or mechanically attached single -ply roof covering. c. Metal roof deck panels in addition to or in lieu of Items 4a and 4b. Page 15 of 17 ER -4607 5. Fire protection materials: Z -146. 6. Fire protection material thickness for unrestrained ratings (inches): • PARAMETER 3 HR. 2 HR. 1 HR. Deck without gypsum wallboard 3 2'/ 1'/ Deck with gypsum wallboard 3 2 1 F. Wide flange member protection': BEAMS MINIMUM W/D RATIO 3 HR. 2 HR. 1 HR. - Min. W8 x 28 0.80 1 7 / 8 ' 1 [18/8] [17B] [5/8] Min. W6 x 16 0.66 1 1 5/8 [ 1 '/e] [1'/,] N2] Min. W8 x 10 0.37 2 1 3 / 4 [ [ /e] rid G. Steel joist protection's: SIZE AND SPACING OF STEEL JOISTS 3 HR. 2 HR. 1 HR. 10K1 with or without scrim or lath spaced > 4ft. o.c. 3'/, 2'1, 1'/ 10K1 with or without scrim or lath spaced s 4 ft. o.c. 2'/ 1'/ 1 12K3 24 ksi max or 16K2 30 ksi max. joists with or without scrim 2'/, 1'/, 1 >4fto.c. 12K3 24 ksi max or 16K2 30 ksi max. joists with or without 2'/ 1 1 scrim < 4 ft. o.c. For SI: 1 inch = 25.4 mm. * Spatterkote SK3 required on roof decking for MK -6 /HY, MK -6/HY ES, MK -6s, Z- 106/G, and RG. Firebond is required on roof decking for Z- 106/HY. Lath is required on rood decking with Z -146. +Increase thickness by 1 / 7 , inch for Z- 106 /HY to the nearest' /, inch. 'Insulation and roof covering and method of securement must be classified by Underwriters Laboratories Inc. and be recognized in a current evaluation report. Where foam plastic insulation is used, it must be recognized in the roof covering evaluation report. 2 NR = Not recognized. 'As an alternate to the roof beam thickness provided in Table 6 -F, thicknesses for unrestrained beams may be determined by the following equation: 7-1 _ [(W 2 / D2) +0.517 [(W +0.6] where: T = Thickness of fireproofing. W = Weight of steel beam (pounds per lineal foot). D = Heated perimeter of steel beam (inches). 1 = Refers to desired beam size and required material thickness. 2 = Refers to given beam size and material thickness in table. Limitations: Minimum thickness shall not be less than 3 /, inch. W/D ratios shall not be less than 0.37. • Page 16 of 17 ER -4607 '1.7 to 3.4 lb. /sq. yd. diamond mesh '1„-inch metal lath,' /, to'/,, -inch fiberglass scrim fabric, or 20 mil strand' /,, -inch plastic net secured to one side of each steel joist is optimal. 'Bridging bars or angles shall be protected with the coating material thickness required for a minimum distance of 12 inches beyond the joist. TABLE 8— MINIMUM AVERAGE THICKNESS OF FIRE- PROTECTION MATERIALS APPLIED TO UNPROTECTED ROOF ASSEMBLY: MK -6 /HY, MK -6s, RG, Z -106, Z- 106 /HY, Z- 106 /G, Z -146 A. Insulating concrete roof system:' 1. Structural support: Steel beams or joist supporting a minimum ' / -inch fluted steel decking, minimum No. 24 gage, vented or nonvented galvanized units with clear spans as required by insulating concrete manufacturers evaluation report.' 2. Insulating concrete assembly. Vermiculite concrete and insulation board as required by insulating concrete manufacturer's evaluation report.' 3. Wire mesh: As required by insulating concrete manufacturer's evaluation report. 4. Roof covering: a. Class A, B or C roof covering b. Ballasted, adhered or mechanically fastened classified single -ply membrane. 5. Wide flange beam thickness in brackets [ ] may be used when half -flange tip thicknesses are used on the bottom flange tips. 6A. Beam protection: Fireproofing thickness (inches)`: PARAMETER MINIMUM W/D RATIO 3 HR. 2 HR. 1 HR. Min. W8 x 28 0.80 2 17 5 / a [ /e] [ /,] rid Min. W6 x.16 0.66 2'/, 1' / /a [ [ ['I,] Min. W8 x 10 0.37 3 2'/, '/ [ _ [ [ 4] 6B. Steel joist protection": SIZE AND SPACING OF STEEL JOISTS 3 HR. 2 HR. 1 HR. 10K1 with or without scrim > 4 ft. o.c. 3 2'4 1'4 10K1 with or without scrim < 4 ft. o.c. 2'4 1'4 1 12K3 24 ksi or 16K2 30 ksi joists with or without scrim > 4 ft. 37 27 1 12K3 24 ksi max. or 16K2 30 ksi max joists with or without scrim < 4 ft. 2'4 1'4 1 o.c. 12K5 at 24 ksi max. with or without scrim > 4 ft or < 4 ft. o.c. 3' /, 27, 1 For SI: 1 inch = 25.4 mm. 'Insulation and roofcovering method of securement must be classified by Underwriters Laboratories Inc. and be recognized in a current evaluation report. Where foam plastic insulation is used, it must be recognized in the roof covering evaluation report. 'Design stress of the steel deck units shall not exceed 75 percent of their allowable bending stress. 'Insulating concrete manufacturer's specific application instructions, wire mesh requirements, minimum dry density requirements of concrete and insulation board requirements as specified in individual manufacturer's evaluation reports. • Page 17 of 17 ER -4607 • As an alternate to Table 6, Item 6, thicknesses for unrestrained beams may be determined by the following equation: T1— j(W 21D2) +o.oir2 ((W 11 01) +0.6j where: T = Thickness of fireproofing. W = Weight of steel beam (pounds per lineal foot). D = Heated perimeter of steel beam (inches). 1 = Refers to desired beam size and required material thickness. 2 = Refers to given beam size and material thickness in Table 2A, Item 3 or 4. Limitations: Minimum thickness shall not be less than 3/e inch. W/D ratios shall not be less than 0.37. 'Use of 1.7 to 3.4 lb. /sq. yd. diamond mesh 3 / 8 -inch expanded steel lath, 3 / 32 - to 3 /, 6 -inch fiberglass scrim fabric, or 20 mil strand 3 / 18 -inch plastic net secured to one side of each steel joist is optional. 'Bridging bars or angles shall be protected with the coating material thickness required for a minimum distance of 12 inches beyond the joist.