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CASCADE VETERINARY REFERRAL
4 4 CENTER TREANSFORMER SUPPORT
` O SYSTEM
Structural Calculations
For Lewis and Van V1eet Job # 4163.1
� a Location: Tigard, Oregon
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Table of Contents
Calculations---------------- ---- -- - - -C -1 — C -4
Details D -1 — D-4
consulting engineers
18650 s.w. boones ferry road
tualatln. oregon 97062
(503) 885.8605 phone
1503) 6E35.1206 fax
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rualatin. Oregon 97062 .1. i 0 fig' Job No. B RAO
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LEWIS consulting engineers Job Tigard Veterinary Center
. 18660 S.W. Boones Ferry Road Client
Tualatin, Oregon 97062 Job No. BY RMN )GUS
(503) 885 -8605 phone (503) 885 -1206 fax Data 06 /08106 Sheet No. C —
VAN VLEET , , y j it :'"vv"-'
SEISMIC MECHANICAL LOADING
Code: 2003 IBC
INPUT VARIABLES Fp (x) = .4 x a SE* x Ip 1+ 2 x z x Wp
OTAL GENERATOR WEIGHT --(Wp) = 0.6 KIP Rp h
Avergage Roof Height- ---(h) = 17.0 FT.
Generator Attachment height ---(Z) = 16.0 FT.
,TRUC. COMP. AMP. FACTOR —(ap) = 1 I Fp = 0.888 x Wp I
IMPORTANCE FACTOR ---Op) = 1.5
COMP. RESP. MOD. FACTOR—(Rp) = 1.5
SPECTRAL ACCELERATION - --(S = 0.77 Fp(min.) = .3 x S x Ip x Wp
MECHANICAL EQUIPMENT LOADING Fp(min.) 0.347 x Wp I
Fp = 0.888 Wp = 516 LBS.
Fp(max.) = 1.6 x Sin x Ip x Wp
I Fp(max.) 1.848 x Wp I
w t s Job: Tigard Veterinary Referral Center
consulting engineers Client: Cascade Acoustics Inc.
9 9 Job No 04163 By RMN ,I
18680 S.W. Boones Ferry Road Date: 06 /08-06 Sheet No.
Tualatin. Oregon 97082
VAN VLEET (503) 885.8605 phone (503) 885.1208 fax
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CHECK DIAG. WIRE SPLAY$: 12 GA. F Y := 55000-psi A := 0.0085 •in
CAPACITY OF WIRE WIRE capacity 0.6•F y 0.6 = 386.2 Ib
2589b
TENSION IN WIRE a := 45•deg = 3650Ib < 386 Ib O.K.
cos(a)
CHECK 1/4" X 3" LAG SCREW W/ EYE TO WOOD FRAMING ATTACHMENT:
258.1b
TENSION ON CONNECTION: = 365•Ib
cos( a )
FASTENER THREADED PORTION: 1.75 IN.
ALLOWABLE WITHDRAWL LOAD: 225 LB. /IN.
Ib
CAPACITY OF LAG SCREW 225•- 1.51n 1.33 = 44- 8.9•Ib
in
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