A structural base plate assembly features a large base plate secured by twenty one-quarter-inch diameter anchor bolts arranged in a multi-bolt layout around the perimeter. End plates and secondary plates align with the built-up column flange, which is omitted for clarity. Dimensions and working points define the precise setting of the anchor bolt pattern and plate dimensions relative to the column centerline.
4 A.1 3' - 6 1/2" 2' - 10 1/2" 1' - 3" 1' - 3" 1' - 3" 1' - 3" WP TYP 3" 1 1/2" 1 1/2" BASE PL2 PL2, TYP ALIGN W/ BU COL FLG 1 1/4" ø ANCHOR BOLT, (20) LOC 9" 9" 3" EQ 3" 3" EQ 3" 9" 9" NOTES: 1. BU COL NOT SHOWN FOR CLARITY. CL BU COL CL BU COL END PL3, TYP MATCH BU COL WIDTH 1 1/2" 1 1/2"
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