Establishing hold points and tolerances can be complex and requires experience in construction and manufacturing methods, engineering judgement, and/or analysis. Often, hold points and tolerances are not well defined in the contract documents, do not cover all items, or are omitted.
In this paper, engineer Paul Bandlow provides a general overview of tolerances and hold points in the construction of movable bridges, explains what tolerances and hold points are, how they are established, who should establish them, and why they are important to the success of movable bridge projects. He explains the advantages of tolerances and hold points, ways to avoid ambiguous or unachievable tolerances, and how establishing tolerances and hold points is beneficial to both the contractor and the owner.
Presented at the HEAVY MOVABLE STRUCTURES, INC. 20th Biennial Movable Bridge Symposium.
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