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Specifications
APR _ 21 •: 38 07:50Af1 `• LMK: EyGII P.1/9 - v a-nioR +..onsula Engineers , �� //v�`��} J�(�I o : '' 3933 SW KELLY AVE. / PORTLAND, OR 97201-4393 ......___ ...._-_..._..-. - -' (503) 222 -4453 / FAX 24B -9263 906/0 s..t,,J i ` � ,,,,{ FAX T R A N S M I T T A L (Please call 222 -4453 if all pages are not received) TO: ?A r - I C 4`" ;N MP d++4'r DATE: ! f' 2 !, 1 °J9€3' ATTN: MR Gt)Y S e t , - 1 , ` FROM: 4 1r1 M - r - - P V , - A N Pe. PROJECT: f E4 Ve‘k L.A....aY baA Pe w l e ..r 'T NO. OF PAGES TO FOLLOW: a URGENT, PLEASE HAND DELIVER YES COPY TO FOLLOW IN MAIL ias COMMENTS: c C'?3) C'48- 7303 _ ', II 7. ' i i 1 1 1. .1. 1 .... A__ i 1 __ F ,1 I , S 1 .77 . • i r? Q CA, -- _ -I _ c Ar L , - +ss 1. it t t r s N - irk i f 1 _.. . 1 _ I _ i _ I AM w„ j 1 i . - - - -- - _.... - -! • - t - -- -i- __. ._.. . I � [ JIZ . I . . . . _ . 1 ___�_.j._.. . . . _ . . . fi . 1 .! [ -1 i . , 1 1 APR 21 '98 07:51AM VLMK ENGINEER P.2/9 , _ v ` � ` r, evi.o Uming Ertlgineers 9S cro / 75 .ice. • 3933 SW KELLY AVENUE, PORTLAND, OREGON 97201 4393 M (503) 222 4453 , FAX (503) 248 -9263 / vlmk S vlmk.com PRINCIPALS ALFRED N. VAN DOMELEN, PE. JAMES E KNAUF PE April 21, 1998 GREGCRYJ, 9LEFGEN, PE JOHN T BROOKS I -AVL!N G. KEMP, PE Mr. Guy Belt KIMBERLY A. SCHOENFELDER Pacific Roofing Company P.O. Box 1728 Beaverton, Oregon 97075 Regarding: Roof Inspection of Building at 9540 SW Tigard Avenue, Tigard, Oregon Dear Guy: At your request, we have investigated the roof of the structure located at the above mentioned address and have analyzed the existing roof structural members for their capacity to support the proposed new 4 ply roof. We understand that the existing roof has one 4 ply roof in place of which we have assumed to weigh approximately 1.7 pound per square foot. Similarly, we have assumed the weight of the new 4 ply roof to be 1.7 pounds per square foot. Per our conversations prior to this investigation you indicated that the existing roof would remain with a new 4 ply roof added. During the observation of the condition of the existing roof on Thursday, April 16, 1998 you mentioned that the existing roof may need to be replaced. It was your opinion that originally you thought that any bubbling of the top layer of the roof could be scraped off with a shovel prior to installing the new roof. After viewing the condition of the existing roof, however, you indicated that the bubbling of the roof was excessive and that the existing roof may need to be completely replaced. The calculations provided in this roof investigation are made with the assumption that the existing roof will remain, The roof structure is adequate in either scenario to support the new roof loads, but we ask that you please notify VLMK Consulting Engineers should the decision be made to remove the entire existing roof. This particular building was one that VLMK Consulting Engineers designed in July of 1978. Original drawings and calculations were available for use in this investigation. Our investigation consisted of a visual observation of the existing roof structure with a representative sample of the existing sub- purlins, purling, girders, and columns being visually observed for conformance to the original construction drawings. All of the structural roof elements appeared to be in conformance with the original drawings and as specified. The existing calculations were reviewed and supplemented as required to verify that the existing structure as designed is adequate for the additional roof dead load. Per the existing drawings the existing roof structure is as follows: The roof consists of V2 Douglas Fir Plywood sheathing spanning over 2 x 4 Douglas Fir #1 sub - purlins spaced at 24" on center. The purlins span approximately 20 feet between glue - laminated girders. The original design drawings indicate that these purlins are 4 x 14 Douglas Fir 41 with an option to use 6 x 12 Douglas Fir #1. The actual size of these purlins could not be accurately identified. The glue- laminated girder system is a cantilever and drop -in system that utilizes 5 -1/8" x 27" and 3 -1/8" x 18" (Fb = 2,400 psi) glue - laminated beams. The actual sizes of these beams also could not accurately be verified. e' C A u � M APR 21 '98 07:52AM VLMK ENGINEERS P.3%9 Mr. Guy Belt Pacific Roofing Company April 20, 1998 Page 2 The roof structure was analyzed with full existing dead load, added dead load due to the new 4 ply roof, and 25 pounds per square foot snow load in accordance with the 1996 State of Oregon Structural Specialty Code. Based on our analysis, the roof structural elements have sufficient capacity to support the addition of the new roof. Our analysis of this structure consisted only of an investigation of the gravity load capacity of the roof structure. No investigation of the building was made to determine the lateral load capacity of the structure nor was any analysis made of the lateral force resisting elements. I have enclosed a copy of our structural calculations for this roof investigation. Please call me at (503) 222 - 4453 should you have any questions, comments, and/or concerns regarding this investigation. Best Regards, VLMK Consulting Engineers � (0 Ep "0%, 7,352 ,- Ke . apan,P.E. Prod = t anager „ OREGON • Enc os s i r 18. KMK:kmk N 98137 'PO . Co 3a -5.5 c: File APR 21 '98 07 : 521 VLMK ENGINEERS peld...-1./ 95 0 / 75 4 P . 4/9 G-Z-re-.-e.14 V , III, ..:;...IL s VLMK Consulting Engineers T I 3933 SW KELLY AVE. / PORTLAND, OR 97201-4393 Job client FAC F rr' 75, (503) 222-4453 i FAX 248-9263 .iob No. 9'613 I „ .5'1O 54) $4-J ,, 0.t. 4,1 5 Sheet No F a - . A T 6. 2,x4 c>r)L.); ,--14, SPuF-L! a 24-" =. Ax 4- ©R c:,x- 12 c\.)p-- s 0 ( 5_,ok - Z .0 PSP Y ITri Nt G tl-vc. Cf"AFt.S, 2— PL,1 i C4 7° I L ,7 PS F- C'ILP C E-- , - 2.. c Ly 4 c,AP ‘-s- SP t2-11 P.. 44 14 SVLAT1C}r4 ---. S:st-U LAM E—A.AAS .... ', o io s Fr 7 T *• 1 ( 4 ps EX is-rit.G., Ch LW LAT1 4c S I KI MI I c-.-4 0 PSf td .ct P.P LT. 1 ( r (c), = OS a `e.t.v , =•=0.4 s Su&pL-)p-t-iN$ ___.........._,.... • •••••••■■•••■• ,..■ IT,V ...• *■■• : NA cA9 -..- ,15( ., .1 C12-) -,..- ( 542:7)C SD 70 ,S6 1.64 r 1 C ,;1•7)..- 1 1)1 c-Ae4c.ITY •-7- , 71 .8 , _ -2B ,, 14, Ps F > 2. IPut OZ ,4.1 1 ,4 -3) Cs 0 f2- CC k 7 1 2.1 ,1 :3 10 ' Acp = Clo2.1-CIIIS)Cler 14,711 eJ,. • C17-) ,- 041 ,tb 17 1 1 C49,4 c lry .w•-• ( ell - -2. . V3,7 FSP II. c psi APR 21 '98 07 :53AM VUI< ENGINEERS P 5/9 • ' _ - VLMK Consulting Engineers vr�.,� �F�1 w ilit . : 3933 SW KELLY AVE. /PORTLAND, OR 97201 -4393 c�iona p‘ Ftc- r�OD�rJ �o. ELM (503)222-4453/ PAX 248 -9263 Job No. fl I By 1G rA k DOte 4 116 1 9 S Sheet No. C^ Z C1fiE G SNY A 2- cA c i r-V C }t' GIB Yw I4,`) P-5 DL = 1 , 4.9 4 25 C = S( , ,ta - (i'S)C31.'3 { ,s I -- a 1•C. C , IS)(gS - ) F' L) 1 7 -k--11■1 f = +- 25 -) C;aN)Cl=)') 6 �1,ts�C PE. CT S cak. CMCDN c� c!c 3 % = C2sa- ►.t,c,Ca" ©;)= 58sc, I�. S , �C 5s SG i ;) g lc„s , ,43 c t G5, *3 (I.15)C z:4Uo) c 1/ 4k . ti % C-7.0 V E=-2rs INS M = t . . 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' 2 -(, O // 0 I i• PA tw 39, 4.- 04 � • � 0� 0 0 4 Q.� / /f r;'r ,4c 75 /,; /r :S. /. eV, 3 / L D.s As 4i 7. 5_, ¢/ / 5, 4 Zi S) 1 f'' 5 /$ Ja, 4• / z2. 2,-4 /,t t f /,G 4 J o e ¢ 1 5" • • APR 21 v 704141.v.6":, EMT -a, 4 GA• Structural / Civil Engineers C 5 Prefect:— - �. 1 L `asy By 'F sheet No Q - Client ;. - /4-e- A C .ai\')'7 _ - -- Wel S Project No. 8'1 S� f2 . rc.. r/�1= / /2G / /Z. G 6x 6.34r) 4 c3 `/ G ,., 7 V _ rt. Sf� /3. E'(7,1ds) /09 ,A'" +,6 - 5e C /g /4S t; vr7e / �` =d „ P, A. c • Tp G„jo 5 42/. 5 n CJ 8k 7i= / 00 4F L/5_ 4KO- APR a 98 Q7 :F1 K ENGINEERS P. "- v v/►N DO IVLM 6 E LUU JtNGA. Structural / Civil Engineers Gtf4cG5 4 Prohe, - ./ 1/�4..< / By t /? dr Sheet No ‘sJC- / , Client t / t t 4/r CCU= Cr' Dote : 7/9 Project No ET 7 p - 7 - `,//'': r cots, . . , / / ‘ , / - / f 6 ; 1 - ) / 7 . 2 i : Z9. 7 < s'C2 / - e . 30, "10,04'6), (z1.7) ~ -- 5 4/0,6,0".• < r . r _ T.7:71.7-7z . 4 / SG Q'X 0 D C4C • ' .1., = ¢O,asc . i • Hi' : r ' ti 1 i 2 % ..1. . f._._ — 7 o;. """ 6 (1 ) _ 4,tZ . 4' _ /'. 7 _ /".o,,..“. 7. 8'.1 6.7) - /5,77 Ve = /S.9 /as-es ' 34. r ..I..� / �r /� ;`! end Go.� 2(,�r 1 -1!. ---- /7LfL,L- 4• = ,7SL d /.7t !.9:J) ROOF COVERING MATERIALS (TEVT) 325 324 ROOF COV • NG ATERIALS (TEVT) t ROOFING SY ( C ontinued ROOFING SYSTEMS (TGFU)— Continued EM TGFU)— "` 1 • "UltraGard" or any UL Classified polyisocyanurate insulation, hot - mopped or mechanically f as - Intermediate Coat: No 345 appl , at a r , g of 100 sq ft/gal. :-'•: ' toned in combination (optional) with 1/2 in. "Retro-Fit' cover board; or 3/4 in. "Fesco over Aggregate: #24 mesh silicon c . ide at I rate of 10 -15 lbs/10 sq ft. back-rolled led into the t,, polystyrene. wet intermediate coat. , • •, Ply Sheet Two or more plies Type G1 "Glasply IV" or "Glasply Premier ", nailed or hot Top Coat: No. 346 applied at a to of 21'e sq ft/gal. mopped. System Identification: 'Traffic lack". Surfacing: Type G3 "Glaskap", hot mopped. Incline: •3 B t Deck: C -15/32 Incline: 1 2. Deck: NC ft/gal. Insulation: (Optional) Any thickness, one or more layers "Fesco ", "Fesco-Foam ", "Fes Core", Primer. No. 171 applied at a r of 12 sq x Base Sheet No. 450 applied a rate 60 sq ft/gal ,. "UltraGard'" or any UL Classified polyisocyanurate insulation, hot mopped or mechanically fas - Intermediate Coat No. 345: lied a'rate of 100 sq ft/gal. -, -. tened in combination (optional) with 1/2 in. "Retro-Fit" cover board; or 3/4 in. "Fesco" over ' Aggregate: #24 mesh silico carbid, { a rate of 10 -15 lbs/100 sq ft. back - rolled into the .,' s polystyrene. wet intermediate coat. l , , .Base Sheet: One ply Type Cl "Glasply IV" or "Glasply Premier"; or Type G2 "Glasbase" or Top Coat No. 346 applied at . 200 sq ft/gal. ('Ventsulation "; or "Dynabase" (modified bitumen), nailed or hot mopped. System Identification: "Slope ". 1 Incline: 2 Ply Sheet: Two or more plies Type G1 "Glasply IV" or "Glasply Premier", hot mopped. 3. Deck: NC ; Surfacing: Gravel, crushed stone or slag and hot roofing asphalt. , Primer. No. 171 applied at a rate of 125 sq ft/gal- Deck: C-3/4 Incline: 3 Base Coat No. 350 applied at a rate of 38 sq ft/gal. • Insulation: (Optional) Any thickness, one or more layers "Fesco ", "Fesco-Foam ", "Fes- Core ", � "UltraGard" or Aggregate: Silica sand applied at a rate of 4.8 Ibs /100 sq ft. back•rolled into t e wet ase + coat. ' toned in combiany UL Classified polyisocyanurate insulation, hot mopped or mechanically fas- nation (optional) with 1/2 in. "Retro-Fit" cover board; or 3/4 in. "Fesco" over Top Coat No. 351 applied at a rate of 100 sq ft/gal• polystyrene. System Identification: "Pedestrian' Incline: No Limitation Base Sheet: Type G2 "Glasbase" or "Ventsulation "; or "Dynabase" (modifed bitumen), nailed 4. Deck: NC s - or hot mopped. Primer. No. 171 applied at a rate of 125 sq f /gal. '_ply Sheet Two or more plies Type G 1 "Glasply IV" or "Glasply Premier ", hot mopped. Top Coat: No. 351 applied at a rate of 200 sq ft/gal. Surfacing: Gravel, crushed stone or slag and hot roofing asphalt. Aggregate: Silica sand applied at a rate of 4.8 Ibs/200 sq ft. back - rolled into the wet top ;:,Deck: C-3/4 Incline: 3 coat. , Insulation: (Optional) Any thickness, one or more layers "Fesco ", "Fesco-Foam ", "Fes- Core ", System Identification: "351 Incline: 2 ., UltraGard" or any UL Classified polyisocyanurate insulation, hot mopped or mechanically fas- • 5. Deck: NC . toned in combination (optional) with 1/2 in. "Retro-Fit" cover board; or 3/4 in. "Fesco" over - Base No. 171 applied at a rate of 125 sq ft/gal. ':4y,polystyrene. Base Coat' k 131 -One Part" applied at a rate of 38 sq ft/gal• ,Ply Sheet Three or more plies Type G1 "Glasply IV" or "Glasply Premier ", nailed or hot Aggregate: Silica dice sand applied at a rate of 4 -B Ibs /100 sq ft back- rolled into the wet hose ,_;mopped. coat. Surfacing: Gravel, crushed stone or slag and hot roofing asphalt. Top Coat "Polytok 135 -One Part" applied at a rate of 100 sq ft/gal. 't„• Deck: NC Incline: 1.1/2 System Identification: "Deck ". '- Insulation: (Optional) Any thickness, one or more layers "Fesco ", "Fesco- Foam ", "Fes- Core "UltraGard" or any UL Classified polyisocyanurate insulation, hot mopped or mechanically fas - R 10167 (N) A toned in combination (optional) with 1/2 in. "Retro-Fit" cover board; or 3/4 in. "Fesco" over MANVILLE SALES CORP, DENVER CO 80217 polystyrene. r Base Sheet Type G2 "Glasbase" or 'Ventsulation "; or "Dynabase" (modified bitumen), nailed ASPHALT FELT SYSTEMS WITH HOT ROOFING ASPHALT or hot mopped. Unless otherwise specified, min insulation thicknesses shall be "Fesco" 3/4 in. m ' UltraGard" gurfacin Type G3 "Glaskap' hot mopped. 1.3 in. min, "Fesco-Foam" 1.5 in. min or "Fes- Core" 2.0 in. min. mechanically Deck NC Incline: 1 1 /2 "Fesco-Foam" 1.5 in. min placed foam side down over min 3/4 in. thick "Fesco':, s �. Insulation: (Optional) Any thickness, one or more layers "Fesco ", "Fesco-Foam ", "Fes- Core ",. fastened to the deck, is a suitable alternate for 1.5 in. min "Fesco-Foam " Ut raGard " mbina any tion UL o Classified Lionel polyisocya 1/2 m " urate Retro- lati cov on er , hot board; mopped or or 3/4 m in. " ech Fesco anically over fas - "Fes- Core 2.0 in. min is a suitable alternate to 3/4 in. min "Fesco" " or 1.5 Fesco- Foam T and Ta• a +_ "UltraGard Gold It", "UltraGard Gold SP', "UltraGard", UltraGard SP t ) pared UltraGard" are suitable alternates for the insulation materials listed in the asphalt felt systems 'P1y Sheet Two or mo a plies Type G 1 "Glasply IV" or "Glasply Premier nailed or hot °_ with hot roofing asphalt. rovided they do - ,upped. ...;''' Uniform thickness tapered insulation may be used in the following systems D ' . urfeeing: Type G3 "Glaskap ". t - not exceed the indicateto o ene. d incline or thickness. .Deck: C -16/32 Incline• 1 11k - GlasBase Plus" is a suitable alternate to "Gl Cleas A or " Dynabase' 'Insulation: (Optional Any thickness, one or more layers "Fesco ", "Fesco-Foam ", "Fes- Core ", �> asBase" 1 Incline: 3 'Fes- Core _ "UltraGard" or any UL Classified polyisoc anurate insulation, in combination (optional) with 1/ 1. Deck: C -3/4 Fesco-Foam Y thickness, one or more layers "Fesco " • „in;. "Retro-Fi cover board; or 3/4 in. "Fesco" over polystyrene. lnsuletion: (Op Lionel ) An Y Bsse Shoat One ply Type G 1 "Glasply Premier" or 'Glasply IV "; or Type G2 "Glasbase" or pol l edG n combination (optional) wth rt /2yen.urRetro-FReSCOVeh board ; p or d 3 /4mnC • . " ; or "Dynabase" (modified bitumen), hot - mopped. '; ,Ply Sheet: One or more plies Type G1 "Glasply Premier" or "Glasply IV ", hot mopped. polystyrene. g -: PPed Surfacing: Ty G3 "Glaskap ", hot mo ' ' Base Sheet: Two plies Type 15 plain or perforated asphalt saturated or anic felt, nailed. Two - Deck. • , any UL Cl 15/32 plies Type 15 perforated asphalt saturated felt, hot mopped. on Incline: 1 Surfacing: Gravel, stone or slag and hot roofing asphalt. *; Insulation: to Any thickness, one or more layers • Fesco ", "Fesco-Foam ", "Fes- Core ". " Ultrsgard" Incline: 1-1/2 "Fesco• Foam " 'Fes- Core . 'assi layer �t. 2. Deck: NC •aced p of fi thed e polyisocyanurate above insulations but is insulation. not One acceptable of by i1/2 tselfin. . "Retro-Fit Board'" may be • .• over "UltraGard" or any UL Classified polyisocyanurate insulation, hot mopped or mechanically 4 in. "Fesco fas• . ' Base Sheet: "" " "Dynabase" " lnsuletion: (Optional) Any thickness, one or more layers "Fesco'. Glasply IV" or "Glasply Premier ", 3 toned in combination (optional) with 1/2 in. "Retro-Fit" cover board; or 3/ nailed. :- ailed. Glasbase , Ventsulation" , eet "Dynaply" or "Dynabase" hot mopped. , polystyrene. .;;. Surf acing: Type G3 "Glaskap" hot mopped. "Gl • Ply Sheet: Type 15 asphalt organic and Type G1 asply Premier" or "Glasply IV'. ; Deek:C -16/32 Surfacing: Type G3 "Glaskap Incline: 1 ••Fes- Core"• Class B "ma Sheet "Glasbase " VentsulaUOn or "Dynabase' • 3. Deck: NC "Fesco- Foam . Ply Sheet "Dly" "Db, hot mopped. "UltraGard" or any UL Classified polyisocyanurate insulation, mechanca a Insulation: (Optional) Any thickness, one or more layers "Fesco , y over s: Surfa c i n g: Type G3 "Glaskap hot mopped. i l) f stened or hot ynap or ynaase mopped in combination (optional) with 1/2 in. "Retro-Fit" cover board; or 3/4 in. esc n ailed Deck: N Incline: 3 �.,�' Insulation: ptional) Any yers "Fesco "Fesco- Foam "Fes- Core . oahe Shoat: Type G2 "Glasbase" or "Ventsulation or "DY polystyrene. nabase" (modified bitumen) . ; UltraGard" or an UL Classif (O thickness, one or more la ied polyisocyanurate insulation, hot mopped or mechanically fas - or hot - mopped Premier hot mopped ed in ', nation (optional) with 1/2 in- "Retro-Fit' cover board; or 3/4 in. "Fesco" over Ply Sheet: Two or more plies Type G 1 "Glasply IV" or "Glasply ' : le r combi Do Surfacing: Gravel, crushed stone or slag and hot roofi'n ne. e "Fesco- F oam 'Fes -Co F Sheet• T y pe G2 "Glasbase" or "Ventsulation"; or "Dynabase" (modified bitumen), nailed. 4. Deck: NC •• eel: One or more plies "Glasply IV" or "Glasply Premier ", h o t mopped. i Fesco Sh Insulation: (Optional) Any thickness, one or more layers Fesco oer - + S S te c : Type G3 "Glaskap ", hol mopped. ti " m UltraGard" or any UL Classified polyisocyanurate insulation, hot mopped or ac" v . c in combination (optional) with 1/2 in. "Ratio -fit' cover board; or 3/4 in. 0 ) y pal or mar i layersi"F 3 polystyrene. modified bitume 1 � din ar co mb ination an Y (optional) with 1/2 oney in. race inFit• c Fesco "Fesco-Foam ", "Fes- Core 1. Base Sheet• Type G2 "Glasbase" or "Ventsulation or "'Dynabase ( n natene y ( ptr An thickness, one or more la arson, over hot board; mopped or 3/4 or me in. "chanically Fesco over fas - led Inaula ._ " or UL Classified or hot mopped. Ply Sheet: One or more plies Type G2 "Glasply I, IV" or "Glasply Fesco . Premier ", hot mopped ^ i imlyat. Y Sheet Two or more plies Type G1 "Glasply IV" or "Glasply Premier nailed or hot • Surfacing: TYPe G3 "Glaskap' Incline: 1 "Fes-Co • -d., PDed „- 5. Deck: NC "Fesco-Foam. Insulation: (Optional) Any thickness, one or more layers " __ -_ _......,,ov ntu vRnDUCT q`; LOOK FOR MARK ON PRODUCT : t' r . n -h S t i n ..._.., - ,.�.,..- .- .-.�.- ......�,- -,-.., . --.>.- . T".- .•- ^, - °A,.� - -,- .r ..,. °^^- Built -Up Roofing Specifications Specification 4GNC For use over wood or other nailable Four Ply decks on inclines of '/4" to 6" per foot Mineral Surfaced (20.8 to 500 mm /m) Regions 1, 2 and 3 Fiber Glass Built -Up Roof For Re 9 Materials per 100 sq. ft. of Roof Area Nailable Deck Bitumen y Sheathing Paper: Bitumen — Wood board decks only 1 layer Sheathing Paper (If Required) Felts: G GlasBase. Mineral Surfaced GlasBase, GlasBase Plus, PermaPly 28 or Ventsulation Felt 1 ply GlasBase Plus, 2' Lap • . Cap Sheet GlasPly Premier, PermaPly -R or GlasPly IV 2 plies Ventsulation or PermaPly 28 1 • End Laps GlasKap, Mineral Surfaced Cap Sheet 1 ply Staggered 4- -4 - 2' Lap 3' Apart (Min.) Bitumen (Interply): I t L ie � __ Incline per Foot Asphalt Nominal Weight + '� t Up to 1 " 170 °F, Type II, Flat 69 lbs. 1 �• 1 " to 3 190 °F, Type III, Steep 69 lbs. J • 2 Lap I _ 3" to 6" 220 °F Type IV, Special Steep 69 lbs. " 0 to 6" PermaMop 69 lbs. • — • GlasPly Premie I - ' I' .. 6" end Approximate installed weight: 175 - 260 lbs. GlasPly IV or ��9'�I PermaPly -R La T _ . 't • • r . General nails staggered on approximately 18" (457 mm) centers. Use nails This specification is for use over any type of approved structural or fasteners appropriate to the type of deck with 1" (25 mm) mini - deck (without insulation) which can receive and adequately retain mum diameter caps. For additional fastener information, refer to nails or other types of mechanical fasteners that may be recom- the Fastener Data in the "Roof Deck" section of the current Schuller mended by the deck manufacturer. Examples of such decks are Commercial /Industrial Roofing Systems Manual. wood and plywood. This specification is not for use directly over I lightweight, insulating concrete decks. Using GlasPly Premier, PermaPly - R, or GlasPly IV, apply a piece 18" (457 mm) wide, then over that, a full width piece. The follow - Design and installation of the deck and /or substrate ing felts are to be applied full width overlapping the preceding felts must result in the roof draining freely and to outlets by 19" (483 mm) so that at least 2 plies of felt cover the base numerous enough and so located as to remove water felt /substrate at all locations. Install each felt so that it is firmly and promptly and completely. Areas where water ponds uniformly set, without voids, into the hot bitumen (within ±25 °F for more than 24 hours are unacceptable and are [±14 °C] of the EVT) applied just before the felt at a nominal rate of not eligible to receive a Schuller Roofing Systems 23 lbs. per square (1.1 kg.m over the entire surface. Installation Guarantee. over porous substrates such as roof insulation may require up to Note: All general instructions contained in the current Schuller 33 lbs. per square (1.6 kg /m of hot bitumen. Commercial /Industrial Roofing Systems Manual should be consid- Surfacing erect part of this specification. Prior to application of GlasKap, cut the cap sheet into handleable lengths (12' - 18' [3.66 m - 5.50 m]). Lay the material out on the Flashings roof and allow it to relax and flatten. To accommodate a full width Flashing details can be found in the "Bituminous Flashings" section sheet, apply a mopping of hot asphalt, approximately 20 °F above of the Schuller Commercial /Industrial Roofing Systems Manual. the EVT, at a nominal rate of 23 lbs. per square (1.1 kg /m (The Application higher temperature of asphalt maximizes the bonding of the cap Over wood board decks, one ply of sheathing paper must be used sheet to the ply felts.) Then flop the cap sheet into the hot asphalt. under the base felt and on top of the wood board deck. On subsequent courses, the cap sheet is positioned upside down, directly over the sheet in the preceding course such that the side lap Note: On roof decks with slopes up to 1" per foot (83.3 mm /m), area of the preceding sheet is exposed. Care should be taken to the roofing felts may be installed either erpendicular or parallel to maintain 2" (51 mm) side laps and 6" (152 mm) end laps. Asphalt the roof incline. On slopes over 1" per f (83.3 mm /m), refer to is applied in the same manner as before, making sure to also cover Paragraph 6.11 of this section for special requirements. the 2" (51 mm) exposed side lap. Asphalt may also be applied to the exposed "upside down" cap sheet, prior to "flopping" it into the Using GlasBase, GlasBase Plus, Ventsulation, or PermaPly 28, hot asphalt. The cap sheet must be firmly and uniformly set, without start with a 12" (305 mm) width (a specific base sheet may be a voids, into the hot asphalt with all edges and laps well sealed. condition of Guarantee). The following base sheet courses are to be applied full width, lapping the preceding felt 2" (51 mm) on the Asphalt should meet the requirements of ASTM D 312. The contrac- side laps and 4" (102 mm) on the end laps. Nail the side laps 9" for must provide a Schuller confirmation number for asphalt on jobs (229 mm) o.c. Down the longitudinal center of each felt, place two which require a Guarantee. Check with a Schuller Technical Service rows of nails spaced approximately 11" (279 mm) apart, with the Specialist for special requirements in hot climates. —//