Generally when I do a structural design with MEP equipment, I require the Contractor to design the anchorage and provide the calculations for review. I usually have a note that stipulates the equipment pad sizes need to be coordinated with the anchorage calcs regarding thickness and edge distance requirements. Most of the time there's no problem with this approach however a few times the anchorage calcs show that anchor reinforcement is needed (either for tension or shear). My position is that the reinforcement is needed by the anchors and not because the concrete foundation/equipment pad is inadequate structurally. Therefore, it should be designed by the Engineer providing the anchorage calculations. However, I've gotten into countless arguments with Contractors and their Engineers who feel the reinforcement should be designed by the Engineer doing the foundation/equipment pad design. Does anyone have any thoughts on this or can shed light on what they consider is the responsibility of the anchorage designer vs the foundation designer? If I know that reinforcement will likely be required I make that note in the drawings but most of the problems come from smaller equipment that I didn't expect anchor reinforcement to be needed. Thanks!
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