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CALCULATION SHEET <br />SUBJECT:DATE:JOB NO: <br />BY:SHEET: <br />C:\Users\sfigueria\Documents\Blank Calc Sht1 <br />3900 E. Cover Street, Long Beach, CA 90808 562.985.3200 P 562.985.1011 F www.mhpse.com <br />Illumination Foundation 23-0221-00 <br />Guardrail @ Stairs <br />Feb-2025 <br />EG <br />Rail spacing, s = 4'-0" <br />Rail height, H = 3'-6" <br />Shear <br />Length of weld, L = 0.5" (conservative) <br />Rail loading, Vu = max(200lb, 50plf*s) = 200lb = 0.2k <br />ΦRnv = Φ(0.6Fexx)(0.707aL) <br /> = 0.75(0.6*70ksi)(0.707*1/8in*0.5in)(2 sides) <br /> = 2.78k <br />DCR = Vu/ΦRnv = 0.2k/2.78k = 0.07 OK <br />Flexure <br />Length of weld, L = 1.5" (conservative) <br />Mu = Vu*H = 200lb*3'-6" = 700lb-ft <br />Moment arm, d = 2" <br />Tu = Mu/d = 700lb-ft / 2" = 4200 lb = 4.2k <br />ΦRnt = Φ(0.6Fexx)(0.707aL)(1+0.5sin1.5θ) <br /> = 0.75(0.6*70ksi)(0.707*1/8in*1.5in)(1+0.5sin^1.5(90)) <br /> = 6.26k <br />DCR = Tu/ΦRnt = 4.2k/6.26k = 0.67 OK <br />Tu and Vu combined: sqrt( 0.2k+4.2k)^ = 4.4kips < ΦRnt OK <br />HSS2x2x1/4 <br />See Enercalc below <br />4.3.4 <br />HSS 12x4x1/4 <br />Stringer <br />HSS 2x2x1/4 <br />Guardrail <br />H <br />d <br />914-918 N Bewley <br />St5/8/2025