What determines the proper thickness of wood-plank and wood-panel decks?

The proper thickness of wood-plank and wood-panel decks is determined primarily by design loads. Design loads take into account several factors, including the weight the roof will have to support, such as live loads (e.g., people, equipment, snow) and dead loads (e.g., the weight of the roofing material itself). It’s essential to ensure that the decking can safely carry these loads without risk of structural failure.

While local building codes may provide guidelines, they often reference the necessary design loads that must be accounted for when determining material thickness. The choice of roofing material can have implications for the overall load but does not directly dictate the thickness of the decking. Lastly, while cost can be a consideration in the material selection process, it does not influence the required structural integrity needed based on the loads that the roof must bear. Therefore, understanding design loads is crucial for ensuring that the deck is both safe and functional.