The building code of the city of Boston. (title varies) (1921)
Boston (Mass.). Building Dept · leaf 70
Fig. 1. City op Boston Building Law. 63 Sect. 15.]Pab. 113.— Fiber stresses, M M fs = Asjd pjbd^ Par. 114. jkbd2 k Par. 115.— Steel ratio, for balanced reinforcement, P=i- fc\nfc /(6) T-Beams. (3) (4) (5) fc -^ … • •• r4#=- T=2^. k- b->l Fig. 2. Par. 116.— Case I. When the neutral axis lies in theflange, use the formulas for rectangular beams.Case II. When the neutral axis lies in the stem.The following formulas neglect the compression in thestem.Par 117.— Position of neutral axis, ^^^^ndAs+bfi enAs+m 64…
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