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AASHTO LRFD 5.13.2.5.4 ~ Typo?

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lbms

lbms

Structural
Sep 1, 2004
1
Is this a typo? AASHTO LRFD 2004 Equations 5.13.2.5.4-1, 4-2 & 4-3 give the nominal punching shear strength as 0.125*sqrt of f'c*shear area. ACI and other references I use have always allowed punching shear to be 4*sqrt of f'c*shear area. AASHTO is different from ACI by a factor of 32. Has anyone else run across this?
 
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AASHTO LRFD is using KSI for stress units and ACI is using PSI. sqrt(1000) = 31.62. Looks like the punching shear is identical for both codes.
 
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