Loft Floor Joists

This is part 2 in my series of loft conversion videos.

Loft floor joists.

While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. What size floor joists should i use 2 x8. Floor joist span tables for surveyors floor construction. Ceiling joists for non habitable loft floors c16 strength grade timber.

A basic floor system is installed in about 10 stages from preparation to boarding the floor. Clearing the loft area of all debris insulation struts and temporary boards to expose the ceiling boards. True floor joist span calculations can only be made by a structural engineer or contractor. First off basic floor plan of the loft.

Can i get floor joists that will span almost 20 without using column support. In this video i show how i cut my my joists make packer plates get the joists from the garden up int. Live load is weight of furniture wind snow and more. Dead load weight of structure and fixed loads 10 lbs ft 2.

2 grade of douglas fir are indicated below. 1 ft 0 3048 m. The new floor joists of your loft conversion will need to offer at least 30 minutes worth of fire protection which could mean replastering the ceilings in those first floor rooms below. I m building a loft above my garage for storage.

When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started. Total loft dimensions are 5 2m left to right 7m front to back. Hard lines are the walls on the first floor underneath joists on the first floor landing run left to right so does that mean the central wall running front to back is load bearing. Surveyors and structural engineers use data from tables below to help calculate the size of timbers necessary to give adequate support to timber floors.

1 psf lb f ft 2 47 88 n m 2. If so what spacing between floor joists do you recommend. Maximum floor joist span for no. Loft will be 19 7 1 4 wide by 8 deep.

The loft room will also have to be separated by a fire door either at the top or bottom of the new stairs.