The building code of the city of Boston. (title varies) (1921)
Boston (Mass.). Building Dept · leaf 69
.] … 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 -^
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