A significant portion of the document is dedicated to vertical support systems (shoring). It defines the critical distinction between:
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It provides rigorous standards for both horizontal and vertical loads, including dead loads (concrete and forms), live loads (workers and equipment), and environmental loads like wind.
Do not rely on pirated, incomplete, or outdated copies. Purchase the official PDF from the American Concrete Institute. At roughly the cost of a single yard of concrete, it is the most valuable investment you can make in formwork safety and efficiency.
ACI 347R-14 references ACI 117 regarding tolerances for plumb, line, and level. The guide advises that forms must be built within tolerances slightly stricter than the final concrete requirement to account for movement during placement.