Laserfiche WebLink
Luis Labrada <br />809 Bowsprit, Suite 105 Project: Ross Common <br />Chula Vista, CA 91914 Engineer: A.H. <br />Phone: (619) 370-9515 Date : 10/19/2023 <br />www.lamareng.com <br />Guard Post Spacing =4.83 Ft. <br />P =200 Lbs. <br />Height =42 In. <br />Moment = M = 200 Lbs. * 42 In. =8400 In.-Lbs. <br />Use = <br />Section Modulus (S) = ( 2In.*2In.*2In./6)-(1.75In.* 1.75 In.*1.75 In./6) =0.44 In.3 <br />Bending Stress = M/S = 8400 In.-Lbs. / 0.4411 In.3 =19043 Psi. <br />Allowable Bending Stress = 0.66 Lbs.*36000 Psi. =23760 Psi. <br />19043 Psi. (Calc.)<23760 Psi. Allowable OK <br />Distance to Center of Fasteners = H1 =41.00 In. <br />Distance between Fasteners = H2 =3.50 In. <br />Moment = 200 Lbs. * 41 In. =8200 In.-Lbs. <br />F = M / d =8200 In.-Lbs. / 3.5 in. =2,343 Lbs. <br />Use = <br />Area =0.11 In.2 <br />σ = F/Area = 2,343 Lbs. /0.11 in2 = 21300 Psi <br />36000 Psi. Allow.>21300 Psi (Calc.)OK <br />Use:4 3/8 In. ø A307 BOLTH <br />Embedment ( p ω ) =4 In. <br />Lateral Design Value ( Z ) =710 Lbs, (Per NDS 2018 Table 12.B) <br /> Kf =3.32 CM =1.00 <br />ϕ =0.65 Ceg =1.00 <br />λ =0.80 <br />CΔ =1.00 <br />Cg =1.00 Z' = 2357 Lbs. <br />1172 Lbs. (Calc)<2357 OK <br /> NDS 2018 (ASD) Table 11.3.1 Z' = Z * CD* CM * Ct * Cg * Ceg * Cdi * Ctn * CΔ <br />Lbs. (Allowable) <br />Plate Connection <br />GUARDRAIL CALCULATION - LONG SIDE <br />POST DESIGN <br /> 2'' x 2'' x 0.125'' Thk. Tube (36ksI) <br />POST TO BEAM ATTACHMENT CALCULATION <br />(4) 3/8'' Ø Thru Bolt 3.5'' Apart <br />P <br />HH1 <br />H2 <br />H2 <br />Page 5 of 19 <br />HOLD - 1223 N Ross <br />St3/4/2025