The overall layout procedure for a bolted brace connection within a structural steel frame begins by laying out the bottom brace connection on the gusset plate and establishing the upper-most bolt hole at distance Lbh from the lower-most bolt hole. The upper bolt-hole pattern is matched to the lower pattern, with a floating dimension applied at the upper end of the brace rather than the working point dimension Lwp-h. Additional notes reference specific details for concrete blockouts and bolt tensioning procedures.
CIRCLED NOTES ARE KEYED ON DETAIL. A LAYOUT BOTTOM BRACE CONNECTION OVERALL PROCEDURE: B ESTABLISH UPPER-MOST BOLT-HOLE, C LAYOUT UPPER BOLT-HOLE PATTERN FOR MINIMUM BOLT TENSIONING LOCATED AT DISTANCE L bh FROM SIMILAR TO LOWER BOLT-HOLE PATTERN. PROCEDURE SEE DETAIL 3/-. ON GUSSET. (SEE DETAIL 2/-) WP L bh L wp-h NOTE: FLOATING DIMENSION, NOT L wp-h AT UPPER END OF BRACE B W wp H wp LOWER-MOST BOLT-HOLE. (SEE DETAIL 2/-) C A NOTE: SEE DETAIL 4/- WHERE CONCRETE BLOCKOUT WILL BE REQUIRED. D
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