Câu 21: CMM: Certified Construction Manager

The joint between a cast-in-place wall and a cast-in-place roof slab contains a waterstop for a sub-grade structure. While installing roof beams, the waterstop became dislodged from the already-placed wall. A non-conformance report was issued. The engineer of record’s repair detail showed to cut and remove the dislodged waterstop sections. The authority/agency re- approved the detail as the waterstop is part of a secondary waterproofing system and the primary system was deemed sufficient. The contractor did not comply with the detail and placed the concrete roof slab over the dislodged material. In this scenario, which of the following options represents the BEST course of action?

1. A. All slab concrete should be removed.
2. B. The agency should accept as-is and rely on the primary system.
3. C. Based on the engineer of record’s recommendation, the contractor should develop a repair detail and submit for approval. — đáp án hiện tại
4. D. The concrete should be chopped out, rebar dowels should be drilled into the new slab, and the repair detail should be implemented.