I have a stair case to build. The total rise is 66". The run from the landing to the floor is 47.5". I figured that it will take 8 rises of 7.25" but can't seem to get the tread figured out. Please help.
2007-09-07 10:34:35 · 5 answers · asked by ibmatt1966 2 in Home & Garden ➔ Do It Yourself (DIY)
Maybe I misunderstand, but 66" rise with 8 risers @ 7.25" does not add up.
8 x 7.25" = 58"
assuming 66", I'd 9 say risers at 7-5/16". That gives you a difference of 3/16"
The next problem is 47-1/2" for run. Typically, I start with 10-1/4" level cut on the stringer. With a 2x12, 11-1/4", that gives you a 1" nosing. Well, 8 treads, one less tread than risers. That is 8 x 10-1/4" = 82" That doesn't include room at the bottom of the stairs. Even if ripped down a bit no way you can get a straight run of conventional stairs in there.
So can you start with a landing and turn the stairs 90 degrees from what you want to run them? Or am misunderstanding the room you have to for total run? Another option, but I don't think you want to do it is a ship's ladder. It is basically, stairs that are as steep as a ladder, open risers. In which case, 6 risers @ 11". The angle to the floor of the stringer is 60 to 75 degrees. If 75 degrees, then run is ..... oh good trig. 17.86" Plus a bit. The ladder actually sits away from the top landing a bit. So pretty steep. But will sit in the space.
If I misunderstood the 47.5" part, then just go with 10-1/4" level cut on the stringer part.
Good luck
2007-09-07 14:53:36 · answer #1 · answered by robling_dwrdesign 5 · 1⤊ 0⤋
Hey man...if your staircase abuts a wall, just draw a straight sloping line from the top landing to the bottom on this wall with pencil or chalk. Divide the risers equally according to the minimum requirements of the local council ie. If 7.5" is the maximun riser, then 66'" will give 9 risers at 7 1/3" rise which is less than 7.5". Hence, the staircase will now comply with local code requirements. Just saw and nail the threads & steps onto the sloping staircase beams according to the profile drawn on the wall. If you do have a wall, you may fix-up a board or plywood to replicate the same....tata & good luck.
2007-09-11 04:44:03 · answer #2 · answered by benjy chang 2 · 0⤊ 1⤋
I build alot of stairs, the code for treads are 11" which includes a 1" overhang. You dont want to go any less than 10".
Good luck, Swequin
2007-09-07 12:13:49 · answer #3 · answered by swequin 3 · 0⤊ 1⤋
That'd just be the distance from the beginning of the stairs to where the end would be on the floor, wouldn't it (if you combined the steps)? So divide that by 8.
2007-09-07 10:43:32 · answer #4 · answered by shmux 6 · 0⤊ 3⤋
most tread plates are 10 inches
2007-09-07 11:19:22 · answer #5 · answered by William B 7 · 0⤊ 2⤋