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Reinforcing Splice "Lap Class" Explanation

Reinforcing Splice "Lap Class" Explanation

Reinforcing Splice "Lap Class" Explanation

(OP)
I've always used the standard ACI 318 equations for determining tension and compression lap splices.  I see a lot of the newer material (specifically the 2002 CRSI Design Handbook) uses something called "Lap Classes" types A and B.  Type "B" being either worst case or more conservative depending on the definition.  CRSI does not define what these classes are.  I could not find the definition anyway.

Could somebody please explain what exactly what these classes mean and how to determine what class to use.  Thanks.

RE: Reinforcing Splice "Lap Class" Explanation

ACI 318 12.15.2:  All are Class B unless there is twice the required rebar or 1/2 or less of the rebar is spliced within lap length.  

The requirement is to "encourage the location of splices away from regions of high tensile stress."

RE: Reinforcing Splice "Lap Class" Explanation

(OP)
Yup, I see it now.  You would think that CRSI would address this as well, would't you.  Thank you OzzWald.

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