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mt232 06-27-2007 03:02 PM

framing the stairwell
I have the framing almost complete in my add-a-level, but I prefer to have the cieling over the stairs be at an angle, roughly the same pitch as the stairs themselves. I have no issue with the size/dimension calculation as my parents have what I am trying to do.

My question is proper framing, what will pass inspection? at the lower end of the cieling joists, should they sit on some type of properly framed sill, just like a window?

crecore 06-27-2007 05:28 PM

I like to rip a 2x? at the corresponding pitch across the bottom length and install it horizontally nailed into the wall studs. Then notch the ceiling joists to line up with the bottom rip and fit onto the topside (kind of the opposite of a bird mouth rafter cut). The horizontal 2x ties everything in nice and you dont have to break into the wall (in the case where the wall is finished) to tie the ceiling joists in. It also creates a nice straight edge so your sheetrock joint will be secure, true and easy to tape. Most shortcut framers wouldnt even bother with the rip as framers dont even usually have table saws around... although it can be done with a circ saw too. Other than that it's only holding up the load of the ceiling itself so std. framing.

Oh and a quick way to pitch the ceiling the same as stairs, drop a plumb bob top and bottom to the edge of a tread and measure along the plumb bob equal measurements both ends, mark, measure to mark and cut joists. Or quicky way (not as accurate)... take the pitch block created by cutting out the stair stringers, flip it upside down, level the top and trace a line on the bottom. :)

OH, one more thing... lol dont forget to leave proper head clearance... 6'8" minimum measured straight up from the nose of any stair.

good luck

mt232 06-28-2007 09:41 AM

Thanks.......and this should pass the inspection, right?

troubleseeker 06-30-2007 02:50 PM


Originally Posted by mt232 (Post 50742)
Thanks.......and this should pass the inspection, right?

Be sure that you maintain the required mininum head room of 6'8" , measured along a plumb line from the nose of the finished tread. Of couse, this is the mininum requirement, and more clearance will feel much more comfortable when walking the stairs. This clearance problem mostly comes into play at the bottom of the run , where the stairwell opening ends.

crecore 06-30-2007 07:38 PM

not much to inspect there... head clearance, stud spacing and proper qty of screws on sheetrock, doesnt get much more basic.

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