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Structural Concrete - Hassoun

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Appendix C <strong>Structural</strong> Aids 1023<br />

Table C.3<br />

(Continued)<br />

28. Triangular load on all span L:<br />

W = total load = wL<br />

2<br />

R A = V A = 4 5 W<br />

R B = W 5 = V B<br />

M A =− 2 15 WL<br />

M C =+ 3 50 WL<br />

Δ max =<br />

WL3<br />

212EI<br />

(at x = 0.447L)<br />

29. Triangular load on part of the span:<br />

W = wa<br />

2<br />

R B = V B = Wa2 (5L − a)<br />

20L3 R A = W − R B<br />

M A =<br />

Wa<br />

60L 2 (3a2 − 15aL + 20L 2 )<br />

Maximum positive moment at S = b + a2<br />

2L<br />

M max (positive at) D ∶<br />

M D = R B S − WL (−b + S)3<br />

3a3 30. Concentrated load at midspan:<br />

R A = V A = 11P<br />

16<br />

R B = V B = 5P<br />

16<br />

M A =− 3PL<br />

16<br />

M C = 5PL<br />

32<br />

Δ C = 7PL3<br />

768EI<br />

√<br />

1 − a<br />

5L<br />

Δ max =<br />

PL3<br />

107EI<br />

(at x = 0.447L from B)

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