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Hi Andrew
I was thinking dynabolts would induce splitting force in the concrete if they were all tat the same depth and if the bolts was too close the pad edge.
I also thought about in bedding bolts in the wet concrete pad using a template. But doing this means if I have a slight misalignment, it all goes to pot. I had the base holes (Qty 12, 2 either side near gussets, one in centre between gusset quarters) oversized drilled to 20mm for this. So I can use smaller threaded rod, lets say M16...which allows for some bolt misalignment errors.
But Chem bolts certainly have an attraction I'd like to try and I really don't need to use all the bolt holes.
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