huangyhg

additional longitudinal steel (lrfd 5.8.3.5) in concrete ben
aashto lrfd's longitudinal steel check (lrfd 5.8.3.5)fff">requires additional longitudinal reinforcement due to shear. i have seen conflicting information regarding the requirement for this additional steel (al) in a concrete bent/pier frame cap.
2007 aashto lrfd 5.8.3.5 states: "the area of longitudinal reinforcement on the flexural tension side of the member need not exceed the area required to resist the maximum moment acting alone. this provision applies where the reaction force or the load introduces direct compression into the flexural
compression face of the member."
i typically design concrete bents/piers that are just concrete frames that i think have this "direct compression" at each column. do i need this additional longitudinal reinforcementfff"> for shear? this requirement is typically around 3 si to 6 si additional steel top and bottom and is really ridiculous.

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