I am beginning to prepare a structural demolition plan and shoring plan for a multi-story post-tensioned structure. I have assessed the equipment the contractor will be operating on the decks, and I have designed the shoring required under the working surface before demolition of a floor may begin. But, when it comes to beginning to release strand tension, I need some help. I have seen contractors smash up PT bridge with hydraulic hammers, allowing the strands to detension as the hammers hit them. But on this project, which is near other buildings, I need to ensure that no wedges or strands eject, at all. I am trying to figure a strong, but not to expensive, means of doing this- some kind of reusable temporary encasement around the strand live ends... Any thoughts here?
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