An inside web may be formed, as required, in the closed sectional part such that {HEAD ~ the upper and lower edges} of {TAIL ~ the inside web} are joined to the upper and lower flanges, respectively, and such that the inside web is approximately perpendicular to the upper and lower flanges 
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An inside web may be formed , as required , in the closed sectional part such that { HEAD ~ the upper and lower edges } of { TAIL ~ the inside web } are joined to the upper and lower flanges , respectively , and such that the inside web is approximately perpendicular to the upper and lower flanges
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH