PROBLEMS 5.1 A post-tensioned bonded prestressed beam has the cross section shown in Figure P5.1. It has a span of 75ft(22.9m) and is subjected to a service superimposed dead load W_(SD)=450 plf k(N)/(m) and a superimposed service live load W_(L)=2,300 plf (33.6k(N)/(m)). Design the web rein- forcement necessary to prevent shear cracking (a) by t solutionspile.com

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PROBLEMS 5.1 A post-tensioned bonded prestressed beam has the cross section shown in Figure P5.1. It has a span of

75ft(22.9m)

and is subjected to a service superimposed dead load

W_(SD)=450

plf

k(N)/(m)

and a superimposed service live load

W_(L)=2,300

plf

(33.6k(N)/(m))

. Design the web rein- forcement necessary to prevent shear cracking (a) by the detailed design method and (b) by the alternative method at a section

15ft(4.6m)

from the face of the support. The profile of the pre- stressing tendon is parabolic. Use #3 stirrups in your design, and detail the section. The following data are given: )

2

(This question from Prestressed Concrete: A Fundamental Approach 5th, by Edward Nawy) ( if you find the Manual Solution it will help better , Thank you )

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