Originally posted by Radical
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25.5 lb HTS plating does run several feet forward of bhd 50 and several feet aft of bulkhead 166, especially if its the shear strake that is attached to the stringer strake of the main deck.
You will also see that almost every T bar frame has holes cut in it to reduce weight (plus it provided for cable and piping runs). The strength of a T bar or H beam is in the distance the flanges are apart. The web is thinner because its sole purpose was only to keep the flanges at their proper distance.
The guidance of cutting lightning holes are:
1. The hole must be no more than half the depth of the beam (unless reinforced with a welded collar).
2: The center to center distance of the holes shall be no shorter than twice the depth of the beam.
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