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6 <br />HOOD ANCHORAGE: <br />L =11.0 ft Sds =1.70 g z / h =1.0 <br />B =6.5 ft ap = 2.5 <br />H =4.0 ft Rp =6.0 <br />Wp =0.60 kip Ip =1.0 <br />SEISMIC COEFFICIENT: <br />Fp = 0.4 * ap * Sds * Wp / (Rp / Ip) * (1 + 2 * z/h) <br />Fp =0.4 *2.5 *1.7 / (6.0 /1.0 )*(1 +2 *1.0 ) * Wp <br />Fp =0.85 * Wp <br />Fp min = 0.3 * Sds * Ip * Wp =0.3 *1.7 *1.0 * Wp =0.51 * Wp <br />Fp max = 1.6 * Sds * Ip * Wp =1.6 *1.7 *1.0 * Wp =2.72 * Wp <br />Fp =0.85 * Wp <br />SWAY BRACE: <br />P EL = Fp * Wp =0.85 *0.6 =0.51 kip <br />T = P EL / 2 * 2 ^ 0.5 =0.5 /2 *2 ^0.5 =0.36 kip <br />TRY:1/8" SWAY BRACE [As =0.012 sq in, Fy =36.0 ksi, FOS =1.67 ] <br />5/8" THRU-BOLT [Z perp =0.31 kip, CD =1.33 ] <br />T allow = As * Fy / FOS =0.012 *36.0 /1.67 =0.26 kip >0.36 kip <br />V allow = CD * Z perp =1.33 *0.31 =0.41 kip >0.36 kip <br />USE <br />1/8" SWAY BRACE <br />5/8" THRU-BOLT <br />VERT SUPPORT: <br />T DL = Wp / 4 =0.60 /4 =0.15 kip <br />TRY:3/4" THRU-BOLT (4x)[Z perp =0.68 kip, CD =1.33 ] <br />1/2" VERT ROD [As =0.19 sq in, Fy =36.0 ksi, FOS =1.67 ] <br />V allow = CD * Z perp =1.33 *0.68 =0.90 kip >0.15 kip <br />T allow = As * Fy / FOS =0.190 *36.0 /1.67 =4.10 kip >0.15 kip <br />USE <br />3/4" THRU-BOLT (4x) <br />1/2" VERT ROD <br />HOLD- 420 W 17th <br />St3/7/2025