Find the total rise of the stair the first measurement to determine is the distance between the top and bottom of the stairs.
Stair stringer size lumber.
Start by figuring out how high the stairs will climb and how much.
It is used to determine the length of 2x12 material required to build the stair stringer.
Less than 2 of lumber was left in this stair stringer 2x after the builder cut his tread notches.
My deck stair photo at left shows very deep notching in a stair stringer as well as multiple other safety hazards and code violations.
How to measure stair stringers.
Hold up stair treads with this 3 step stair hold up stair treads with this 3 step stair stringer that meets the highest grading standards for strength and appearance.
The stringer length is the tip to tip length of the cut stringer.
Instead level over approximately to where the bottom of the stair will land step 1 in the illustration above the vertical distance between the bottom and top of the stair opening is distance x which in.
Tired of making multiple trips to the store.
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.
2 1 2 8 deck screws.
Stringers are cut from framing lumber 2 by 8 2 by 10 in the profile of the stair.
When using pressure treated lumber use screws approved for use with acq.
As for the length of the stringers take the total height the stairs need to be and square that value.
The lumber is pressure treated protecting it from termites and rot.
A 42 wide outdoor set of stairs should have 3 stringers 2 x 12 typically.
Risers are attached to the vertical cuts and treads are nailed to the horizontal cuts.
Stringers cut to the proper dimensions are essential for building a solid set of stairs.
Notched stair stringers are widely used and are acceptable if sufficient supporting strength is provided.
But don t just measure up from below the top landing point.
Measuring and cutting stair stringers for your own diy deck or porch project may seem complicated but the process is actually quite simple.