San Francisco : Architect and Engineer, Inc · leaf 571
and alateral moment of 16,000 ft lbs. Allowed stressesare 1200 psi in the concrete and 20,000 psi in thesteel, and n equals 10. The cross section of the beam is drawn with dequal to 10 units on any convient scale. The widthof the beam from right-hand edge to left-hand baris proportioned as desired;… … FIG. I The length A of the compressive area is selectedso that the lower end of the internal moment armwill, when drawn later, pass approximatelythrough the quarter point of the distance betweenbars. The selected compressive area may be tri-angular or trapezoidal. If triangular, distances Xand Y to…
Architecture · Building
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