Unreinforced web penetrations in wide-flange steel beams must be centered on the beam depth and located within the middle third of the beam span. The maximum diameter of the opening is limited to one-third of the beam depth. All penetrations must be confirmed with the structural engineer prior to cutting.
W-BEAM AS PER PLAN OPENING TO BE AT CENTERLINE OF BEAM DEPTH AND WITHIN MIDDLE 3rd OF THE SPAN OF THE BEAM MAX. DIAMETER IS BEAM DEPTH /3 EQUAL EQUAL CONFIRM ALL PENETRATIONS WITH ENGINEER TYP-S-100 TYPICAL OPENINGS THROUGH BEAM WEB - UNREINFORCED
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