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Don’t Forget! You Saw it in the
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November 2023 #15292 Page #97
Information Needed to Provide Efficient Truss Design Repairs By MiTek Staff
etal plate connected roof and floor trusses are used widely in residential single family, multi- family, commercial, and agricultural construction. They provide design flexibility, span greater distances than traditional “stick framing,” and allow faster erection of the roof system and installation of electrical, plumbing, and HVAC materials. From time to time, trusses may require modifications or need to be repaired due to damage. This article covers information that will assist MiTek engineers in designing a repair quickly and efficiently for your truss.
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If a truss is damaged or modified, it must be repaired. Truss members may become overloaded and cause further damage to the truss. Failure to communicate accurate information, such as the exact location of the damage, accurate dimensions, and description, could jeopardize the effectiveness of the designed repair. This could result in additional costs to redesign the repair or even create an unrepairable condition. For instance, the crack shown in Repair Example #1, described as being between the splice and the joint, could be interpreted by the design engineer as a clean break located midway between the joints. In this case, the crack is much longer, and the repair material may be specified too short. This could result in additional cost to redesign the repair or an unrepairable condition if the shorter material is already applied to the truss.
Repair Example #1 Continued next page
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