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Tension in Concrete

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Concrete can take tension only before it cracks.  Once concrete cracks, it 
can no longer take *any* tension.  Are you comfortable with relying on the 
concrete *never* cracking?

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

P.S.  A Professional Engineer should **never** put economics ahead of 
structural adequacy!

Alex C. Nacionales wrote:

. > I would like your opinion regarding using the tensile strength of
. > concrete(10% of Fc') in structural computations.
. > This would be economical in thick shallow footings subjected to large
. > moments where top reinforcement would be needed if the tensile strength of
. > concrete is neglected.
. >