Transcription of Flexural Members - Memphis
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Flexural Members - Memphis
Chapter 6. Compression Reinforcement - Flexural Members If a beam cross section is limited because of architectural or other considerations, it may hap- pen that the concrete cannot develop the compression force required to resist the give bending mo- ment. In this case, reinforcing is added in the compression zone, resulting in a so-called doubly rein- forced beam , , one with compression as well as tension reinforcement. Compression reinforced is also used to improve serviceability, improve long term deflections, and to provide support for stir- rups throughout the beam . Reading Assignment: Text Section ; ACI 318, Sections: , , and Strength Calculations u = c.
Doubly Reinforced Rectangular Beam T s =(A s −A s′)f y h d d’ c d-c Case I Case II Total resisting moment can be considered as sum of: 1. Moment from corresponding areas of tension and compression steel 2. The moment of some portion of the tension steel acting with concrete. M n =(A s −A s′) f y (d − β 1 c 2) +A s′f y (d −d ...
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