Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Drywall & Plaster

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-17-2009, 10:22 AM   #1
Newbie
 
Join Date: Jun 2009
Posts: 12
Share |
Default

Framing for drywall under Spiral staircase


Hi folks. As part of the never-ending basement renovation, I'm working on a framing plan for the basement staircase so I can get on with drywall. The main staircase (ground floor to upper level) is a curved, 90 degree turn construction, which from the underside presents a gentle S-shaped curve. The basement staircase, however, is a basic square, 90 degree consisting of two short flights and a landing which extends about 24" beyond the spiral stair stringer at the outside corner. Widest span I have to deal with is 68" from the inside curved wall to the outside farthest corner of the square landing.

I need to come up with a framing plan that will maximize headroom on the basement stairs and, of course, be strong enough to support the weight of drywall. My initial impression is that simply running 2x3s on edge across the bottom of the curved staircase stringers and extending to tie into the stud walls around the square basement stair landing would do the trick, paying close attention to framing everything level and no more than 24" on centre. (I'm envisioning some rather pie-shaped sections of framing around the bend, with straight sections (more or less) at either end). Scribed lines on both stud walls (inside curved and outside square) would act as guides to keep the smooth flow of framing.

My question here, in addition to whatever framing expertise is out there to help me plan this, is: Is it permissible to attach framing for drywall directly to the upper staircase to support the drywall in the middle of the span? I have had several drywall contractors in to quote the drywall job, and received conflicting answers to this. I am located in Ontario, btw.

I'm leaning on the 'permissible" side of this question myself as the original drywall framing had 2x3's nailed directly to the back of at least a few stair treads, but there's always the chance that the original builder "bent" the code on this one......

Can anyone offer their experience with curved staircases and/or their understanding of the Ontario Building Code?

Thanks!

clemon03 is offline   Reply With Quote
Old 07-17-2009, 11:44 AM   #2
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Default

Framing for drywall under Spiral staircase


If you can post a few pictures of the underside of the stairs that'll be very helpful. As you suggested, maintaining 6'-8" headroom is critical.

Termite is offline   Reply With Quote
Old 07-17-2009, 12:35 PM   #3
Newbie
 
Join Date: Jun 2009
Posts: 12
Default

Framing for drywall under Spiral staircase


Thanks for the reply, thekctermite! . Below are some pics of the staircase - not good ones, but hopefully they'll give you a sense of what I'm dealing with.

For the most part, there is plenty of head room except for one spot. For most of the staircase the height measures 87" from top of basement stair tread to bottom of upper staircase tread, with the stringer on the outside edge sitting slightly lower at 84.5". The problem is the height at the top of the second flight of basement stairs - only 77" to the bottom of the stringer. Put a framing member below that and you're down to 73" with drywall......

Which is why I'm wondering if I can attach the drywall framing to the actual staircase instead of or in addition to the stud walls. A lot less headroom lost if I can......
Attached Thumbnails
Framing for drywall under Spiral staircase-stairs-top.jpg   Framing for drywall under Spiral staircase-stairs-bottom.jpg   Framing for drywall under Spiral staircase-stairs-up-landing.jpg   Framing for drywall under Spiral staircase-stairs-down-top.jpg   Framing for drywall under Spiral staircase-stairs-down-top-2.jpg  

clemon03 is offline   Reply With Quote
Old 07-17-2009, 02:04 PM   #4
Drywall contractor
 
Join Date: Jul 2008
Location: Lilburn, GA
Posts: 2,083
Default

Framing for drywall under Spiral staircase


Can't say as to code, but every one I've hung has had the framing members (generally 2"x4" laid flat, not on edge) fastened directly to the staircase however is was possible. The stairs are freestanding and need no structural support. The framing underneath is just to hold up the drywall. The drywall will have to be hung with 2 layers of 1/4" to allow it to bend and bow around the radius of the stairs. Having the widest part of the 2"x to fasten to makes it much easier to fasten as the pieces are difficult to get an exact measurement for. It's easiest to cut them on the large side and "whittle" them into place. The more "nailers" and the closer together, the better off you'll be. Be sure adhesive is used to minimize the amount of fasteners......
__________________
If you can read this, thank a teacher. If you can read this in English, thank a soldier. Support our troops.
bjbatlanta is offline   Reply With Quote
Old 07-17-2009, 02:07 PM   #5
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Default

Framing for drywall under Spiral staircase


Quote:
Originally Posted by bjbatlanta View Post
Can't say as to code, but every one I've hung has had the framing members (generally 2"x4" laid flat, not on edge) fastened directly to the staircase however is was possible. The stairs are freestanding and need no structural support. The framing underneath is just to hold up the drywall. The drywall will have to be hung with 2 layers of 1/4" to allow it to bend and bow around the radius of the stairs. Having the widest part of the 2"x to fasten to makes it much easier to fasten as the pieces are difficult to get an exact measurement for. It's easiest to cut them on the large side and "whittle" them into place. The more "nailers" and the closer together, the better off you'll be. Be sure adhesive is used to minimize the amount of fasteners......
Good solid advice there! Code doesn't say you can't hang rock (or framing) directly to the stairs, I don't think it'll be a problem as long as the stairs are rock solid.
Termite is offline   Reply With Quote
Old 07-17-2009, 02:14 PM   #6
Newbie
 
Join Date: Jun 2009
Posts: 12
Default

Framing for drywall under Spiral staircase


Thanks bjbatlanta. You've confirmed for me what I believe to be standard practice here in Ontario as well. I was second-guessing myself on this, as a contractor here to quote the drywall job said that tying the drywall directly to the stringers/staircase wouldn't meet code. I thought it was a bit odd, as almost every staircase I've ever seem opened up underneath has been done this way.... Maybe he wanted to amke a bit more work for himself?

Can anyone familiar with Ontario Building Code weigh in on this?
clemon03 is offline   Reply With Quote
Old 07-17-2009, 03:49 PM   #7
Registered User
 
Join Date: Mar 2009
Posts: 9,893
Default

Framing for drywall under Spiral staircase


Might check your local codes, but here are the free 2003 code checks for Canada, the first one:
http://rapidlibrary.com/index.php?q=...code+of+canada Be safe, G

Gary in WA is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Converting an open staircase to a "closed" staircase? tony1853 Building & Construction 7 01-05-2009 01:55 PM
Framing around a staircase Becker Building & Construction 4 01-01-2009 08:30 AM
Spiral staircase possible with 20" x 21" opening? t_bunson Building & Construction 12 09-09-2008 06:18 PM
Spiral staircase questions NateHanson Building & Construction 3 01-20-2008 08:49 PM
Framing a 16 foot high wall for shop pranderson Building & Construction 10 01-01-2006 04:23 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.