Q.

is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is. The minimum stress on the beam subjected to a maximum bending moment is

A. f = (P/A) -(Z/M)
B. f = (A/P) -(M/Z)
C. f = (P/A) - (M/Z)
D. f = (P/A) - (M/6Z)
Answer» C. f = (P/A) - (M/Z)
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