The function of cleats in a roof truss is A. To support the common rafter B. To support purlins C. To prevent the purlins from tilting D. All of the above

The correct answer is D. All of the above.

Cleat is a piece of wood or metal that is used to fasten two or more pieces of wood together. In a roof truss, cleats are used to support the common rafter, support purlins, and prevent the purlins from tilting.

The common rafter is the main beam that supports the roof. The purlins are

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