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JOB NAME _Kaiser SAN 1st Fl GenRad <br />JOB NO. DATE _S09-23018 03/04/2024 <br />ENGINEER DWG. REF _OS -- <br />CALCULATE MOMENT AT BASE ANCHORAGE <br />Equipment Geometry: <br />≔L 31.5 in ≔B 17.125 in ≔H 88 in <br />(Lenght) (Front of cab.) (Width) (Depth of cab.) (Height) <br />≔hc =43.5 in 43.5 in Location of centroid along height of cabinet. <br />Excentricity from centroid along Length, L. "ex" is to the left edge , <br />"ey" is to the right edge. ≔ex ⋅0 in ≔ey ⋅0 in <br />≔nL 2 ≔nB 2 ≔n =⋅nL nB 4 Number of anchors along L and B. <br />≔EH =⋅Fp Wp 272.58 lbf <br />≔EHΩ =⋅⋅Ωo Fp Wp 545.16 lbf <br />≔Ev =⋅⋅0.2 SDS Wp 181.72 lbf <br />Global Forces: <br />≔P =+⋅-0.9 Wp Ev -612.98 lbf <br />≔M =⋅EH hc 11857.32 ⋅in lbf <br />≔MΩ =⋅EHΩ hc 23714.64 ⋅in lbf <br />Equipment is anchored at the base and at the top to the wall. Due to top connection, there is no overturning tension at the base anchors. When the <br />seismic load is perpendicular to the wall the base anchors are in shear and the wall anchors are in tension. When the seismic load is parallel to the <br />wall the base anchors are in shear and the wall anchors are also in shear. Refer to the following calculations for anchor forces. <br />Loads at Base- Seismic Load Perpendicular to wall <br />≔F_total = <br />⎛ <br />⎜ <br />⎝ <br />――EH <br />2 <br />⎞ <br />⎟ <br />⎠ <br />136.291 lbf Horizontal load at base. Load is distributed equally to top and bottom. <br />≔Vomega_tot =⋅Ωo ⎛⎝F_total⎞⎠272.582 lbf Shear load at base including omega for anchors into concrete. <br />≔Vomega_anch =――――Vomega_tot <br />2 136.291 lbf Omega shear load at base divided by 2 anchors into concrete. <br />Loads at Base - Seismic Load Parallel to wall. See Hilti calculation for anchorage into concrete. <br />Loads at Top- Seismic Load Perpendicular to wall <br />≔F_total = <br />⎛ <br />⎜ <br />⎝ <br />――EH <br />2 <br />⎞ <br />⎟ <br />⎠ <br />136.291 lbf <br />(2) Brackets with 3 screws each, 6 screws in total. <br />≔Nscrew 6 <br />≔Tscrew =―――F_total <br />Nscrew <br />22.715 lbf <br />≔Rnt 109 lbf Pull out capacity (#10 SMS 43 mil). See available screw capacity table below. <br />≔DCRT =―――Tscrew <br />Rnt <br />0.208 Screw tension capacity >> demand, Design Acceptable <br />1900 E 4th St - <br />1011190678/9/2024