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Minimum steel reinforcing for grade beams

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oengineer

Structural
Apr 25, 2011
708
Is it structural acceptable to use a min. steel reinforcement ratio of 0.0018 for the design of grade beams when using Fy = 60 ksi & F'c = 3 ksi based on ACI 318?

Comments/suggestions are appreciated.
 
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I'm not as familiar with ACI as I am with CSA, but if the member is meant to act like a 'beam' (horizontally oriented flexural member spanning between supports) I believe it should be detailed as one.
 
My answer is no, If the grade beam is resisting flexure than minimum reinf should be supplied on all tension faces and should be proportioned based on the requirements for beams.
 
Does the beam work as plain concrete? If not provide min reinforcement for a flexural member.
 
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