They keep the stairs secured on.
Build 2 step staircase.
For each stair cut 10 treads from 2 x 10 lumber and 7 risers from osb sheets.
Cutting the stringers 1.
Build your bottom step twice as wide as a single step.
Nail the second riser and screw on the two 2x6 bottom treads leaving a in gap between the boards.
In our example you would need to mark it at 7 3125.
Pre cut stair stringers are available in a variety of.
Add all risers and treads up to the top of the stairs.
Double box steps are built using the same techniques as for a single step.
Build your top step as you would for a single step.
Modify the top of the stringer to.
When starting the staircase construction you ll need to decide how the stringers will connect to the upper and lower.
Fasten the two frames together with the back framing members flush with each other.
Mark a carpenter s square to the height and depth of your steps.
You will need one box for each step.
Lay out a sufficiently long piece of 2 in 12 in 5 1 cm 30 5 cm lumber.
Add decking on top of your frame.
Don t cut it down to length just yet.
Stringers also known as stringer board are the outer part of the staircase housing.
Cut a notch in the bottom of the stringers to fit over a piece of 2 x 4 lumber making sure to cut the notch in the same place on each stringer.
The bottom riser will probably need to be cut to custom height.