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HomeMy WebLinkAboutApplication Ken Okamoto & AssociA;, Inc. 'Structural Engineers - 3186-F Airway Ave. Costa Mesa, CA e Sheet 2 Job # 05219-25 CHASE BANK ATM LARGE CANOPY Exp. .0 V := 90 111ph I := 1 Kz:=1.03 Exposure Category Basic wind speed I mportance factor PANEL I; 'AI l CHASE ! j PANEL : j 181 WIND PRESSURE PER ASeE 7.98 o.~.:... I .' ~: : ~; ~ _ro.. L Velocity pressure exposure coefficient K zt : = 1. 0 Topographic factor ~Dl - , , ! 10 i ~ f11~D~ - -I 10 ! l:=.:J Kd :=0.85 G :=.0.85 Wind directionality factor Gust effect factor ATM STRUCTURE C f:=1.6 Force coefficient ? q z :=O.00256,I(z.Kzt'Kd,V-,I q z = 18.2 psf Velocity pressure at height z P :=q z.Q.C f p = 24.7 psf Wind Pressure ~ Say P:=25 psf PANEL: 'A' Af:=19 ft2 Normal area to wind h := 11 ft Sign height F:=P,Af F = 475 Ib Design Force M :=F.f~) M = 1306 lb ft Base moment \2.2 .Ken Okamoto & Assoc~, Inc. Structural Engineers _ 3186-F Airway Ave. Costa Mesa, eA e Sheet 5 Job # 05219-25 CONCRETE FOOTING DESIGN A f:= 88 ft2 h := 11 ft d :=3.18 ft F':=P.Af M :=F'(~+ d) arM = 19.1 k.ft W struet := 5.0 kips Normal area to wind , ...... ,............... "~"f ......'.(.. : : : : : : : ATM . : . : : Sign height Footing depth "";'<;;';.;~';'.r ~~;t~} .~ I"..:'... Footing depth d P = 2200 Design Force w Footing width Ib M = 19096 Ib ft Base moment FOOTING DESIGN Overturning Moment Weight of structure w := 4.08 ft CONC. FOOTING: TRY: L F:= 13.83 ft d:= 3.18 ft Footing width Footing length Footing depth w.d Pv :=w struct+-.Lp.150 1000 3 .a - Le SP 111in : - . SP 111ax 3.a SP min-Lc2 (SP max - SP min) 2 M:= + Le. .-.Le 223 '_ M As ,- 1.76.(d.12- 3.5).1.33 LF RM :=Pv.- 2 a:- (RM- OTM) Pv Pv SP :- 1.5.a.w.l.33 REINFORCING STEEL: Lc : = 4 [t Sp.3.a SP :- 111 ax 12.1.33 Pv = 31.92 kips Total weight RM = 221 k,[t Resisting moment a = 6.32 SP = 0.621 ksf < 1.00 ksf OK. ~ 41 W x1310 L x3~deepmin. 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