CONCRETE REINFORCING DEVELOPMENT - HOOKS
CONCRETE REINFORCING DEVELOPMENT - HOOKS
(OP)
ACI 318 has a length required in a hook ("L") to develop the bar. If the full length of the hook is not available, does increasing the length of the other leg help? I am assuming that if the other leg was long enough to develop the bar I am ok, but what if conditions are somewhere in between?






RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
1) ACI gives you no explicit means of assessing this situation.
2) Some codes, such as Britain's do give you a means of assessing it.
3) For some bar sizes, standard ACI hook radii may result in crushing of the concrete inside the bend and unacceptable slip in the anchorage.
4) There is a strut and tie technique called the curved bar node method that, in my opinion would allow you to do this and remain in compliance with ACI. it's a fair bit of work.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
fne is talking about hook development length, not the length of the hook extension.
DaveAtkins
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
RE: CONCRETE REINFORCING DEVELOPMENT - HOOKS
DaveAtkins