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STEEL STAIR-A <br />1115 HIGHLAND ST <br />STEEL STAIR WLL = 100 PSF WD.L = 100 PSF <br />L stringer=12.25 ft WDL = 25 PSF WL.L = 125 PSF <br />L landing=0.00 ft STRINGER <br />W stringer=4.00 ft WD.L = 25 4.00 =100 #/ft <br />W landing=0.00 ft WL.L = 100 4.00 =400 #/ft <br />H=8.33 ft WD.L = 50.0 #/ft (PER ONE STRINGER) <br />WL.L = 200.0 #/ft (PER ONE STRINGER) <br />STRINGER DESIGN DEAD WEIGHT:1225 lbs <br />LANDING DESIGN DEAD WEIGHT:0 lbs <br />TOTAL DEAD WEIGHT:1225 lbs <br />TOTAL WEIGHT OF STAIR + LIVE LOAD ON STRINGER = 6125 lbs <br />1-SEISMIC DESIGN CALCULATIONS : <br />Calculation for Lateral load <br />V= CsW (Seismic Lateral load) <br />*For non building systems the seismic response coefficient <br />WHERE: <br />1- Fp = 0.4*ap*SDs*Wp*[1+2(Z/h]/[R/I]ap = 1 (ASCE 13.5-1) <br />SDs =2/3*Sms <br />MAXIMUM:Wp = <br />2- Fp = 1.6*SDs*Ip*Wp (ASCE 13.3-2)Z = 8.33 h = 8.33 <br />MINIMUM:R =1.5 <br />3- Fp=0.3*SDs*Ip*Wp (ASCE 13.3-3)Ip = 1.5 <br />SHEET OF CALCULATION <br />12/9/2024 <br /> SANTA ANA, CA 92703 <br />DATE <br />PROJECT NAME 1115 HIGHLAND ST SANTA ANA, CA 92703 <br />1225 lbs <br />SUBJECT <br />STEEL STAIR <br />PROJECT ADDRESS <br />**==== <br />* <br />* <br />** <br />S1 <br />1115 W Highland St <br />1/15/2025