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Plans 4445 SW BARBUR BLVD., SUITE 200 PORTLAND, OREGON 97239 Q E, v TEL: 503.226.1285 FAX: 503.226.1670 n E -MAIL: info@cidainc.com 3 'IppJ Project Memo \AN‘i -c\GARo G1cY D p1V1S Date: April 27, 2005 13011 -DA4G Subject: Roof reframing at low roof. Project Title: Crown Carpet Phase 2 Project No: 040103.01 By: Curtis Gagner To: Val Henzel City of Tigard Building Department Response to rfi on framing at grid 3, where the new remodel joins with the existing building: It is necessary to add 14" TJI joists beside the existing 2x 1 2's and attach the 2x 12 joists to the new TJI. These joists are required by the increased snow drift on the lower roof and by the fact that the existing joists are not long enough to reach the location of the stud wall on grid 3. See attached stamped calculations and sketches 22A/SK & 22B /SK for joist sizing and installation. c: Dave Curtis, Yorke & Curtis 503.643.5531 Jennifer Beattie, Cida Inc File c.6 510k/1, __% o°‘ p. rD ARCHITECTURE • ENGINEERING • PLANNING • INTERIORS • LANDSCAPE R EC EIV ED �U� 12 23 0 --1- MAY 3 2005 CITY OF TIGARD BUI LDING DIVISION CROWN CARPET SIRUC TURAI_ CALCULATIONS S 12230 SW MAIN STREET TIGARD, OREGON EXISTING ROOF ADDITIONAL FRAMING ER 1 - ER5 SKETCHES 22A /SK & 22B /SK T o 7 L p667 IN 62- u D!►J 4 c? Vert- ,1-4r7; April 25, 2005 PROJECT NUMBER: 040103.01 op PROj (< N s' o cJ \ t8796PE 'A -2 T-1 r� �T s OREGI E 4 °- 7 MBER �\ � ALAN S 6 ,4p, /c, LLT-7-LI 4445 SW BARBUR BOULEVARD, SUITE 200 PORTLAND, OREGON 97201 TEL: (503) 226 -1285 FAX: (503) 226 -1670 E info@cidainc.com ARC1 I ECTURE • ENGINEERING *,,,PLANNING . • INTERIORS • LANDSCAPE ` .. n A. 4445 SW BARBUR BLVD., SUITE 200 PROJECT NAME: PROJ. NO. SHUT I PORTLAND, OREGON 97239 TEL: 503.226.1285 FAX: 503.226.1670 TITLE: BY: DATE: E -MAIL: info @cidainc.com fi ______791,77 / 1 T - T 1 I I— __ II .k /2- < )CT . f,�' — 1 — ! - � — ~_ ■ ■ � s i __ • 1_ -t._ L).L )56/ 51-- 7 criil n1 III ■ o, c , 1 m,- 7?.1 '2 - Y /611 111 11 - � i ■"tea �1 %/ l •tlf! ■M . ! 'i i'1 ,.. 1 . _ I n r(, g 30 L 111111111 ■ ____ tZ6/ a 137`il T ■ III 1' Af. - 0, q i., it. ` /, 73/n rL - ® 3/ .i r � � 1 NIA -- - 1 — - -I Li ll ) I / ill T171_ / C 59 /' 1, c 1 . 1 1 ISM. , - /C a, 2' A 4 V 4 .c eh- 1 K. > 1, < r_ ARCI - II1 f_CI (IRE • ENGINEERING • PLANNING • IN I IRIORS • I.ANDSCj \PI= YC Z SNOW DRIFT FOR FLAT ROOFS IN ACCORDANCE WITH 2003 IBC IN ACCORDANCE W/ ASCE SECTION 7.7 PROJECT NAME: CROWN CARPET PROJECT NO.: 040103.01 DATE:12 -21 -04 ELEMENT ID: LOW ROOF DESIGNER: CDG P := 25•psf Basic ground snow Toad Pmin 25•psf Minimum snow load. I := 1.0 Importance factor (Table No. 7 -4, p. 91) C := 1.0 Snow exposure factor (Table No. 7 -2, p. 90) C 1.0 Snow exposure factor (Table No. 7 -3, p. 91) Density of Snow: D : 0.13 P + 14.0•pcf D� = 17.25pcf D:= if 03 <_ 35•pcf,D D = 17.25pcf Calculated Minimum Roof Snow Load: P := 0.7Ce C,•I•P Pr = 17.5 psf Required Minimum Roof Snow Load: P := if (Pmin > Pr, Pmin, P P = 25 psf Height of Calculated Minimum Snow Load on Lower Roof or Deck: P hb := D hb = 1.01 ft 4/25/2005 3 CASE II: DRIFT LOAD FOR ROOF OF AN ADJACENT LOWER STRUCTURE (Sec. 7.7.1, p. 79 and Figure No.7 -8, p. 89) Wb := 189.ft Horizontal dimension of upper roof normal to edge of roof "Lu" S:= 0.ft Horizontal separation between adjacent structures h := 10.ft Difference in height between upper and lower roof h, := h - h h, = 8.986 ft Clear height between top of balanced snow and topf of upper roof Conceptual Maximum Height of Drift Surcharge at Edge of Higher Structure: Wb := if (W < 25•ft, 25•ft, W W = 189 ft 1 1 3 l4 h := 0.43.(h 0.43.1 — . Al \Ps +101 -1.5•ft h =4.5ft ft psf Overall Width of Drift in Relation to Minimum Snow Load, P,: Wdl := 4•hd Wd1 = 18ft h Wd2 := 4 Wd2 = 9 ft h ) Wd3 8.h W = 36ft Max drift width Wd := if(Wdl > Wd2 Wdl, Wd2) Wd = 18ft Net Width of Drift or Base of Triangular Drift Load in Relation to Minimum Snow Load, P,: W,,: = Wd —S W„ = 18ft Height of Drift Surcharge at Face of Upper Structure: h := if Ol > h h h h = 4.502 ft Reduced Height of Drift Surcharge at Face of Lower Structure: 20.ft - S h„:- • hd h = 4.502 ft 20• ft Maximum Intensity of Snow Load at Edge of Lower Structure: Pmt := D•(h + hb) Pml = 95.16psf Pmt D'hr Pmt = 172.5psf Pm3 if(Pm1 < Pm2• Pm! ,Pm2) • Pm3 = 95.16psf Pm4: if(Pm3 > Pr, Pm3 Pr) Pm4 = 95.16psf h - h P,,, := if h > 0.2,P P = 95.16psf b Maximum Surcharge Intensity in Addition to Required Minimum Snow Load, P,: P := P - P P = 70.16 psf Width of Drift in Relation to Required Minimum Snow Load, P,: Wdr := Wn' Pm - Pr Wdr = 16.3 ft ✓ P - Pf 4/25/2005 • `,..-i1 ^ ,,.. t 'RL/ 4445 SW BARBUR BLVD., SUITE 200 PROJECT NAME: PRO,. No. SHEET PORTLAND, OREGON 97239 TEL: 503.226.1285 FAX: 503.226.1670 TITLE: BY: DATE: E-MAIL: info@cidainc.com — a `in' (f) (7, z ,]l. < J�ovc i I'Dli J,-Z — — 1 ".9/ • /24es r s„ve,...-- .2,4 —47...: ... 't,---- .• , 9 A_ Si-4 25 d iv 54 7 T 4 4 Lk 6 A_ ' (? , rZ 7- R i r y - . - � I y 1 — - , 1 r -- - 1 • — ■ St _ a .�"5 (Z 77 �= i • oT = 1 • `J — / % L /e1 0 1/f/( /,� - Y7Si , - _ l r x Z , 2 -1 S: - ir = /6, 651( if, = `/ /, - M - -� = 1 5 t' €. Ccc If.•,� II. 5 / ,7, Ill RE f = 4 '/0e , ' , ; ( , s; (o, yip zs3o Psi e If r -= — - 1 2 7 lii im k 7ia 9, f 9,� Yz = 0. 7 '. ti , ,v „., __ _ 1 mil - •12rni IMICE ' 7 1 r / ' ' t 4 E. , , ARCMIECTURF • ENGINEERING • PLANNING • INTERIORS • LANDSCAPE - Po"II ^.rte ' h 4445 SW BARBUR BLVD., SUITE 200 PROTECT NAME: PRO/. NO. SHEET r- 5 PORTLAND, OREGON 97239 TEL: 503.226.1285 FAX: 503.226.1670 TITLE: By: DATE: E -MAIL: info @cidainc.com —r — i ________ ___ _ III I M : 10 3z Ar -k �' -_- 3 3 7/11 P = 2 ,Ao P5r (/, /s) (o, y7 --- z Tao J -- �j 1i1/Z rC J 5 .40/-& w�i — ill _ i TT i I I T ARCIIIT EC I U121_ • ENGINEE121NC • PLAN►IINC, • IN E121ORS • l.i \NDSc:API_ (E) SHEATHING 11!..7 NEW TJI _ ice (E) 2x12 PEA NEW 14" TJI PR0550 ROOF SECTION A —A 2x4 SHIM JOIST AT 16" O.C. (E) ROOF SHEATHING NAIL NEW JOIST TO (E) JOIST W/ 16d AT 24" O.C. TOP AND BOTTOM A— � c o P R OF A— � G,I � C� 4' 18796PE 9 �2 (E) 2x12 JOIST BEYOND � (E) 2x12 JOIST WEB STIFFENER SIMPSON HUC FACE MOUNT HANGER sF�REGON (E) GLB GIRDER o 9G 40 ALAN , S -c. ROOF FRAMING FIX Ex p' 62/.30/04 031 1- = 1.-0. DRAWING Trn E: ROOF REPAIR BETWEEN GRIDS 2 &3 DRAWING: PROJECT: 22 12230 SW AWN STREET SK 11G11RD. OREGON JOB: 040103.01 DATE: 04/25/05 C 4445 SW BARBUR BOULEVARD SURE 200 PORTLAND. OREGON 97201 TELL (503) 220 -1200 FAX: (603) 220 -1070 AR_HITECTI_IRE • EN INEL111Ni • PLANNING • IN I LF•zICR- • LANDSCAPE © 2000 0. P.c./cm etc. AIL RIGHTS RFSEIMD WF BEAM PER PLAN W/ NAILER PER 4/S4.1 SHEATHING PER PLAN SOLID BLOCKING 1/2" PLYWOOD SHEATHING MEV - -- — — -- — 12GA DEFLECTION HEAD NEW 14" TJI PR0550 ROOF JOIST AT 16" O.C. 1 " (E) ROOF SHEATHING � ; MIN. NAIL NEW JOIST TO (E) 11111 - JOIST W/ 16d AT 24" O.C. TOP AND BOTTOM JOIST PER PLAN ►Z� I � + + 1 FULL DEPTH SOLID BLOCKING BETWEEN JOISTS END OF (E) 2x12 WEB STIFFENERS AT JOISTS ROOF JOIST BEYOND 1/2" PLYWOOD SHEATHING W/ 10d AT 6" 0.C. EDGE NAILING 10d AT 12 O.C. FIELD NAILING 2x STUD WALL PER PLAN ati ROOF FRAMING FIX 40-. PROFES G ® i = 1' -0" (3 �‘` I B796PE r _ DRAWING TTRE: ROOF REPAIR BETWEEN GRIDS 2 &3 s OREGON of? DRAWING: PROJECT: °"(il,l' °4` 22B caollll olIIPEr ____ AL AN 12230 SW MAIN STREET eX p, ' /1;;, /o , SK TIGARD, OREGON JOB: 040103.01 DATE 04/25/05 4445 SW BARBUR BOULEVARD SURE 200 PORTLAND. OREGON 97201 TEL: (503) 220 -1286 FAX: (603) 220 -1670 AF CHITECTURE • ENt. INS • PLANNING • IN I t_HIC)R- • LAND,CAPE © 2003 P.C. /ca INC. M.I. Rees IESONm