It is with all of these things in mind that we have decided to show you what we think are the ten best non-comedogenic foundations. Somewhere in our top ten picks is a foundation that will work perfectly for you and your exact skin type-along with all of the problems that may go with it.
SPAN/LOADING NOTES. Deflection limited to L/360 live load & L/240 total load. Spans based upon a stair limits of 8 max rise and 9 min. run, governing building codes may be more restrictive. Contact National Lumber EWP Engineering for design. assistance on other stair stringer applications and/or loading.
This will put the end of your stair stringers out at 126 3/4, and when you add your 3/4 thick riser and 1/2 nosing on the stair tread, you will have a finished run of 128. If the noising of the tread can stick out for a total finished run of 131 1/4 then you could cut your stringers to have a 10 run. Also, don't forget to drop the riser height of the first step by the thickness of the tread material and to reduce the run of the topmost step the thickness of the riser material.