Steel framing conditions occur around floor and roof penetrations near columns and beams. A C5x6.7 channel is added under the top flange of the beam typical where dimensions require reinforcement, with a one-inch fillet weld indicated. The detail sets a six-inch minimum and six-foot maximum spacing, with specific conditions for openings measuring three feet or smaller versus larger penetrations that require standard opening details. Notes explicitly prohibit attaching C-channels within protected zones and mandate deck closures per typical details.
MAX. 6" BM., TYP. COL. IN EITHER DIRECTION 1' - 0" SQ. MAX. OPNG. WHERE OCCURS C5x6.7 UNDER TOP FLANGE OF BM. TYP. ADD C5 AT PIPE PENETRATION IF DIM. IS SMALLER THAN 3' - 0" IF DIM. IS LARGER THAN 3' - 0" USE TYP. OPNG. DET. #4 x 5' - 0" BTWN. PENETRATION WHERE OCCURS NOTES: 1.ADD C5 AS SHOWN AT PIPE PENETRATION IF X< 3' - 0". IF X> 3' - 0" SEE TYP. OPENING DETAIL FOR REQ'D FRAMING 2.PROVIDE DECK CLOSURES PER TYPICAL DETAIL. 3.DETAILS SIMILAR TO PERIMETER COLUMNS & INTERIOR COLUMNS WITHOUT BEAMS FRAMING FOUR SIDES. 4.DO NOT ATTACH C-CHANNEL WITHIN PROTECTED ZONES. 6' - 0" MAX. 8" MAX. THIS IS 3" OR LESS OMIT CHANNEL IF 'X' 6" MIN. 1' - 0" MIN. TYP. 1/4 1 'x'
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