horizontal construction joints in concrete walls

huangyhg

horizontal construction joints in concrete walls
what types of restrictions do you usually put on the placement of horizontal construction joint in basement walls or interior shear walls? it seems that requiring a class 'b' tension splice of your reinforcing bars and requiring the concrete surface to be roughened to a 1/4" amplitude would accomodate your flexural and shear requirements, respectively.  but what if the contractor is locating two construction joints within the development length of the flexural reinforcement, say a joint within ld from the bottom of the wall?  thoughts?

within ld from the bottom of the wall?  how tall is that, 2 or 3 feet?  sounds like the contractor needs taller forms.
a very unique situtation on this job i am working on, mat foundation with several feet of granular fill on top, with a slab-on-grade on top.  contractor is proposing to place a construction joint at the same elevation as the slab-on-grade, approx 4.5' above the mat foundation.