Floor and Ceiling Framing- Joists, Hangers, Floorboards, Nogs

Floor Framing

This picture shows the product we have been using to lay the floor. It is a particle board product designed for use in enclosed spaces. That is to say it is not the type designed for use on building projects where flooring is exposed to the elements for a long period. It comes in 1200mm x 3600mm sheets. Some things to remember:

• Put cut edges to the wall
• Stagger sheet joins
• Screw every 300 along and across the sheet. 150mm apart on joins
• Don't glue joins to avoid glue coming out the joins as it goes off.

In this case we fixed the flooring down to floor 190mm x 50mm joists spaced at 300mm centers. This meant that we didn't have to nog for fixing. We just nogged the centerline of each span. Each span was roughly 2800 long between steel I beam frames.

Ceiling Framing

This picture shows the ceiling of the second level of the build. The joists are 150 x 45 spanning between 190 x 45 rafters which have been nailed and bolted to the existing rafters of the building which run perpendicular to the ceiling joists. All joists in this build are fixed with  120mm joist hangers or HandiBracs where joist hangers can't be used. This can be seen in the picture above. The Joist on the left is tight against an existing component of the rafters so a Handy Bracket is used instead of a Joist Hanger.