Staircase Cut Out

In a set of stairs 36 inches wide there are typically three stringers one on each end and one in the middle.

Staircase cut out.

The essence of laying out stair stringers is straightforward. In the notches at all the tread riser intersections stop cutting when the blade reaches the line. Seven inches is a common rise and 11 1 2 a common tread depth. Use the first stringer as a template to cut the subsequent stringers.

Cut a triangle to use as a template for each step. With these dimensions cut a template with the riser height and the tread depth minus one inch as 2 legs of a right triangle. First determine the tread depth and riser height. Pre cut stair stringers are available in a variety of sizes to make this part of the project a bit easier.

The strength of the stringer weakens if the tread and riser lines are overcut. If you ve done the math it s grade school stuff and the layout right the tread cuts will be level and the riser cuts plumb. Cut a notch along the bottom of each stringer for space to position it over a pressure treated 2 in. With all the cut lines drawn carefully cut along them with a circular saw.

He shows you how it s done with tips thrown in along the way to make this easy. Expert carpenter shows you how to measure out mark and cut a stair stringer. You use a framing square to draw the stair s notches on the stringer then you cut them out.