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.
If the joist spacing is more than 16 on center you must install new intermediate joists. Stair stringers should be 16 on center for wood decking and 12 on center for most composite decking. If the deck frame is in poor condition it may be easier to tear down the entire deck and rebuilt it from scratch.