Stair Remediation Work - Welding & Steel Trades - Contractor Talk

Stair Remediation Work

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Old 08-31-2016, 10:24 AM   #1
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Clarkiron's Avatar
Trade: Structural iron
Join Date: Aug 2016
Location: Texas
Posts: 5

Stair Remediation Work

Hey y'all again, we are doing some stair remediation work in a condo in Austin Texas. We got a contract for time and materials to fix the Rises four or five stairwells. We are having a problem on the second floor to 3rd floor Rise. Basically the overall rise is 91 - 1/8 inches and the overall run is 131 - 1/2 inches. The previous welder screwed up pretty badly and is way out of code. He's got measurements ranging from 6 inches to 8 inches on the risers and we are only allowed 3/8 - 1/2 inch variance in between risers. For example if my lowest tread Rise is 6 inches the highest Riser height on that same Stringer can be no more than six and a half inches. Just to see I'm going to give y'all the measurements on this particular Stringer.

From bottom up:

6 1/8- from The landing to the first tread
7 1/6
7 1/4
7 3/8
7 1/4
7 1/4
7 1/4
7 3/8
7 1/4
7 1/16
7 1/2
7 3/8
6 7/8- from the last tread to the landing

The width of the Treads are 12 inches but we have a 1 inch tread overhang so the runs of each tread are actually 11 inches. There are currently 12 treads in there. A simple stair calculator says that 7 inch risers will take care of the problem. Meaning, that we would have to take out all of the trade clips and relay them out for 7-inch Rises. Unfortunately my lead welder calls me and tells me that they did a mock layout of that and it still wouldn't work. I will be heading down to the job site pretty soon but just wanted to see if there is any input from the pros..... we are really close to closing this contract butt this is a big problem we can't figure out. We may need engineering stamps and crap to get it done the stringers themselves all welded solid to the channel iron that is the landing frame/walkway frame. .... So pulling the actual Stringers up 1 inch is out of the question unfortunately. Anybody real good at math out there?
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