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Old 03-11-2011, 09:26 AM   #16
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Originally Posted by gavinol View Post
I need to make a flight of stairs which are not a simple rectangular shape. It needs to be a trapezoid.
can you provide a sketch or at least more details on what you are trying to accomplish??

stairs are fundamentally the same no matter what their horizontal surface shape is.. all stairs will have rise and tread. these are calculated by dividing the total of each by a factor of between 6-7" (risers) and 7-12" from treads. These are based on trying to get to a whole number of each (you can't have 12 1/2 steps).

the rest is "creative freedom" on the builder's part or necessitated by the opening.

details/pictures speak volumes



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Old 03-11-2011, 05:22 PM   #17
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to add my two cents:
if it were my problem, here's what i'd do:

since you have the plywood/sheetrock plane issue, i would make the stairs "closed" by adding skirtboards on each side. these can be nice 5/4" hardwood and varnished, and simply nail to the stringers.

i would then add 3/4" riser material of choice on top of that plywood and the first riser.

then add whatever treads work with your overall rise. if necessary it would be easy to rebuild the whole thing and use nice 5/4" hardwood treads with bullnosed edge.

this is what I would do.

you may even be able to add a mitered skirtboard (connected to mitered risers, which would make it an open staircase. but it might look a bit weird at the top riser.

good luck.
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Old 03-14-2011, 05:27 PM   #18
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I suggest Tcleve has the best idea for a good looking final result. Then finish the risers to match the floor. Of course make sure both steps are equal when you are done. While we are at it, will the lino floor at the top remain? If it gets changed to hardwood or laminate, the step height will become a problem again!!


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