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HomeMy WebLinkAboutMiscellaneous - Exception (34)Kanayo Lala, P.E..............03/03/2014 PROJECT: Merrimack Condominiums F -TYPE BB -Compass Point, N Andover, MA DESIGN FOR - GIRDERSMOISTS /RAFTERS Third Floor Beam T3 Supporting Floor & Point Load From T1& T2 LOADS: DEAD LOAD 20.00 PSF 360.00 PLF Ce= 1 CF= 1.00 SNOW LOAD PSF 0.00 PLF Cq= 1 Cs= LIVE LOAD 30.00 PSF 540.00 PLF qs= 29.10 Cd= 1 TOTAL LOAD 900 PLF 1= 1 Cm= 1 WIND SPEED 100 MPH 29.10 PSF POINT LOAD 16477 LBS 3.25 FT Ra= 13327 LBS 7650 LB =TOTAL REACTION TRIBUTARY WIDTH 18.00 LF E= 2000000 PSI JOIST/GIRDER SPAN 17 LF Fb= 2900 PSI WIDTH- IN 14.00 PSULVL 11.875 IN = d Fv= 285 PSI ROOF PITCH - N:12 = Fc-- 2700 PSI Fcp= 750 PSI MOMENT= 32513 LB -FT MOMENT2= 43313 LB -FT 329.04 =S provided OK S= 313.76 IN^3 1953.65 = Deflection = 0.433 IN = U 252 For Total Load Required U240 Deflection2 = 0.378 IN = U 419 For Live Load Required 0360 Fcp'= 499 PSI OK 3.00 In Bearing Length Fv'= 189 PSI OK USE BETTER HEADER#84 (FLITCH BEAM) 3-LVLs 117/8' WITH 2-3/8- STEEL PLATE BOLTED WITH 5/8" DIA @ 12-O.C. IN TWO ROWS. USE 2-LVLs 117/8" FOR BEAM T4. 11�j