CIP Retaining Walls...Joints!

[MileHighMadness]

Anyone, I'm presenting working on a tradition CIP reinforced concrete retaining wall. The wall is pretty long, and we have placed contraction joints every 22 feet, and expansion joints every 88 feet per the local client standard. Our contractor (this is a Design/Build project) wants to double those spacings. I understand the joints are for crack control for temperature, shrinkage and creep.

Are the any design examples, technical papers that address this issue?

If I approve/disapprove this request, it would be nice to have a reference.

 

[PEinc]

It seems to me that the key points to consider are whether the structure is a building, a slab or a wall, water-retaining or -excluding structur, and the structure's environmental exposure. My very recent experience with this topic indicates that the reviewing engineers all assume the worst condition, whether or not they are applicable. They want the same joint details that they always use for every structure, regardless of the ACI recommendations or the cost.

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