Floor Joist On Concrete

This is probably the best option for extremely heavy floors such as pre cast planks or second story garages.

Floor joist on concrete. That would not be allowed in my area and they use the minimum height in crawlspace to enforce it with the local requirement being 36 inches. They are usually made of concrete steel or wood. Shrinkage compensating concrete type k with an experienced contractor and designer can allow a reduction or elimination of joints. 69 chapter 4 floor construction woodframe floor systems and concrete slab on grade floors are discussed in this chapter.

Or use regular. Considering the cross section of a typical joist the overall depth of the joist is critical in establishing a safe and stable floor or ceiling system. Eventually the concrete shrinks back and behaves similar to a post tensioned. To create a ledge you can use special brickledge blocks which most major manufacturers offer in common widths.

Reinforcement rebar or steel fibers is placed and the concrete actually expands as it cures resulting in tensioning of the steel. While some floors are built directly on a concrete slab those built above open areas such as crawl spaces basements and lower floors almost always use a floor joist system to provide weight bearing support for flooring furniture people and everything else in your home. Although cold formed steel framing for floor systems also is permitted by the irc it is not covered here. Our composite system is economical fast and virtually maintenance free.

Building a framed wood floor over an existing concrete slab can provide the space needed for electric wiring heat venting plumbing drain lines and added insulation when remodeling a basement or garage space. Joists can also be set side by side as double joists providing incredible flexibility when trying to carry. I ve done joist on concrete and seen it done in other parts of the country but i never liked it. The strongest way to install floor joists is to create a concrete ledge on the inside face of the wall.

Joists must exhibit the strength to support the anticipated load over a long period of time. They help support main floors above the crawlspace. Can i just lay my floor joist directly on the concrete. The spi keystone joist system combines the long span benefits of prestressed concrete with all the advantages of a monolithically poured concrete deck.

In many countries the fabrication and installation of all framing members including joists must meet building code standards.