How Many Joist Do I Need For My Roof

Raised deck with steps.

How many joist do i need for my roof.

In general terms joists spaced 16 inches on center can span 1 5 times in feet their depth in inches. How far apart are floor joists placed. The most common option for your floor joist is your standard 2 6. Another very common deck is a raised deck with steps.

This demo version is fixed at 1m clear span. A 2 8 will provide a few additional benefits and have some advantages but overall the 2 6 is the most commonly used and budget friendly option for constructing your shed floor. The full version allows any size. The joists should measure as long as the length of your deck.

Usually 400 450 or 600mm but any value can be used up to 610mm max. A lot of questions revolve around joists when it comes to building a deck. What size floor joist do i need. If you have a low sloped roof or flat roof of less than 2 in 12 these evenly spaced planks will be called roofing joists.

How do i keep them even. A 2x8 up to 12 feet. 2x10 to 15 feet and 2x12 to 18 feet. Joist is a term used in construction for load bearing planks that run horizontally or nearly to horizontally to ground.

Many homes are not built at ground level. To build such a deck you ll need deck boards as well as inner and outer joists the pieces of wood that go between the top boards and your grass concrete. This is the distance between joist centres.