A structural engineer has looked into what caused a concrete slab to fall recently at the Alexan Chapel Hill project on South Elliott Road.
The engineer is working with the contractor to design a repair, town officials said last week.
Crews were ordered to stop working on the parking deck, adjacent to the Village Plaza shops, on Sept. 29 when the previously installed and engineered repair on a pre-cast concrete slab gave way at a cold joint.
A cold joint is a seam created when a new piece of concrete is added to a batch that already has started to set. The process can create a weak link in the structure if done improperly, construction experts note.
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The town’s building manager, Chelsea Laws, said the issue was found in a small, isolated area on the third floor. No one was injured, and the area was fenced off.
The stop work order will remain in effect until the engineer notifies the town that the work has been completed to required specifications, town officials said.