Installing Floor Joists

Mark both spots on both beams where you will be installing your joist hangers with a pencil.

Installing floor joists.

Wide flanges provide a larger gluing and nailing surface for floor and roof sheathing. The rim joist sits vertically on top of the sill plate along the outside of the frame to create a lip for the main floor joists. For most jobs 2 in 5 1 cm x 10 in 25 cm boards are an ideal size. Common sense tells you that large floor joists can carry more load and spacing joists closer together also increases the load bearing capacity of a floor.

You ll use the same size lumber to assemble the rim joists as you will for the main floor joists. If you read my my earlier pages you will know that i was considering installing easi joists at first floor level because i liked the idea of being able to easily run all my pipework. Put the floor joists on the layout marks on the sill plate. These installation tips are supplementary to your manufacturer s instructions and technical guides.

I joists can be ordered with depth up to 16 inches allowing their usage on greater spans. Once you figure out an appropriate number and distance for your joists take accurate measurements on both beams. Installing first floor joists floor having fitted the sills i headed up to complete the first lift. I joist span standards make them a stiffer floor.

Nail each end of each floor joists to the sill plates according to the manufactures requirements usually 3 10d nails floor joists attached to rim joist. Cut the floor joists. But larger is not always better when builders are constructing a home or adding a room addition. These supports run horizontally across the span of the building and are an important part of the engineering helping to make the house solid and sturdy for the long term.

As joists should be placed roughly 16 inches apart the number and placement of your joists will depend on the length of your floor. Engineered i joists are manufactured under exacting conditions to ensure consistent strength that provides long span and high load capabilities. Floor joists are a critical part of the overall frame design in a building s structure. I joist is more consistent in size and shape than traditional floor joists.