Fast stairs are modular adjustable steel stair stringers.
Solid wood stair stringers.
Solid stringers can only be used on the outer sides of a set of stairs.
Since the tread depth b is a constant when using the automatic stair calculator the total run g will vary when you toggle between the two mount options.
Pros recommend a width of 16 between stringers but depending on the stairs and the thickness of the tread that figure could be slightly higher.
A 42 wide outdoor set of stairs should have 3 stringers 2 x 12 typically.
The stringer mount type refers to how the stringer will be attached to the upper landing or deck frame.
As for the length of the stringers take the total height the stairs need to be and square that value.
Compare that with solid stringers which can span more than twice that distance 13 feet 3 inches without intermediate supports.
Simply screw step treads and railings not included to the engineered steel stair stringers to build solid square plumb free standing indoor or outdoor stairs designed for fail safe stair building for all our 32 models can frame 2 to 13 ft high stairs and more with the perforated steel stringers you can fasten any stair finish.
Get head starts building outdoor stairs with this get head starts building outdoor stairs with this durable cedar tone stair stringer.
Once the stair results have been calculated you can toggle between the standard and flush options to compare the differences.
A nice finished look uses a design where the nosing of each tread is hidden within the width of the stringer.