Stair Question
#1
Member
Thread Starter
Stair Question
Guys, how deep can 2 x 12 stringers be cut according to code? I'm building 3 steps with a total height of 16 inches (5.33 in. rise) and I would like to have 11 inch treads with .25 inch nosing overhang...but is 11 inches too deep to cut the stringers? Thanks in advance.
Also, if these are going in a dry garage and the stringers will sit on concrete, should I still sit the stringer bottoms on plastic and/or use treated wood? Thanks again.
Also, if these are going in a dry garage and the stringers will sit on concrete, should I still sit the stringer bottoms on plastic and/or use treated wood? Thanks again.
#2
Member
Stringers
I like to cut the run 10 inches and have a 1-inch overhang. Others may have different ideas.
Use treated lumber to rest on the concrete floor.
How wide are your stairs?
How many stringers are you planning to use?
Use treated lumber to rest on the concrete floor.
How wide are your stairs?
How many stringers are you planning to use?
#3
Member
Thread Starter
Awesome...thanks. They are 38" wide with 3 stringers...3/4 plywood will extend down behind the tread and rest on the stringer for risers. If I don't hear anything else I'm going to go 10.5 deep on the stringer and 11 on the tread for a 1/2 in nosing.
#4
Member
Riser
The top edge of the riser goes up against the under side of the tread above.
Allow for the riser thickness when cutting the run for the top step.
Allow for the riser thickness when cutting the run for the top step.
#5
Member
Thread Starter
Yes I will have the riser under the tread above. What do you mean 'allow for thickness on top tread? You mean cut the stringer not so deep? I had planned to leave the uncut backs of the stringers about 3 inches long to extend under the door threshold and to the wall where they rest. I figured that's how it was done.
#6
Member
Stringer
If the top end of the stringer rests against a vertical surface, there needs to be a vertical cut to avoid having the end of the stringer coming to a point where the top run is cut.
Notice that the bottom riser height is reduced by the thickness of the tread.
Notice that the bottom riser height is reduced by the thickness of the tread.
Last edited by Wirepuller38; 11-21-11 at 02:58 PM.
#7
Member
Thread Starter
I see. So the vertical cut is made where the riser would theoretically be. Thanks again for the help.
#9
Member
Thread Starter
Very helpful, thanks. Hopefully the 3 inch ' extensions ' to wall won't break any codes but I don't see why they would.