Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-12-2011, 12:08 PM   #1
Newbie
 
Join Date: Apr 2011
Posts: 8
Share |
Default

2nd Floor temporary access openings


Looking for some insights on a project I'm considering.

I'm updating my two-story house, new floor coverings, adding a closet, etc., and have been considering adding a central vac and some structured wiring accessories. Problem is, I have no crawlspace (slab on grade) and there are limitations to what I could do in the upstairs attic. I'm wondering if it would be okay to make some temporary openings in the second floor deck, for running wires and pipe. My floor is 3/4" (nom) OSB over 2X10 joists, 12" and 16" oc. The finished floor covering will probably be carpet. Here's a sketch showing general layout, floor panels in black, frame in blue, suggested cutouts in red and some nearby upstairs partition walls in green:
Name:  2ndFloorStructure.jpg
Views: 205
Size:  29.3 KB
Here's a sketch detailing a typical opening:
Name:  CutOutDetailTypical.jpg
Views: 144
Size:  35.1 KB
My questions:
  • Is this legit, is it something that is ever done?
  • Or, will I compromise the structure somehow?
  • Is there a better way?
  • Have I left something out that's necessary?
I was thinking of making plunge cuts with a circular saw, but because of the saw kerf, I'd probably need to get new OSB to close the openings. So I'm also wondering if I used a jigsaw with it's thinner blade, if I might be able to get away with simply re-using the cut-out piece to close the opening when done. All seams would be caulked.

Thanks for the help.

1MoreProject is offline   Reply With Quote
Old 04-12-2011, 12:30 PM   #2
Not so new
 
12penny's Avatar
 
Join Date: Nov 2008
Location: Lehigh Valley, Pa.
Posts: 932
Default

2nd Floor temporary access openings


I think for some of the smaller holes you'd be okay, though I,d use bigger nailers than 2x3.

For that group in the middle I think it would be easier to cut 1 big hole.

I,m sure you'll get other opions.

12penny is offline   Reply With Quote
Old 04-13-2011, 01:34 PM   #3
Newbie
 
Join Date: Apr 2011
Posts: 8
Default

2nd Floor temporary access openings


Okay, I'll consider using 2X4's for the nailers. I might have to slightly notch a few of them where PVC fittings will be, but that's no problem, and it will give me a greater contact surface for the construction adhesive.

The group in the middle, yes, that's kind of a dilemma for me, because I'm not sure whether the OSB was glued and nailed, or just nailed. If it is glued (as I would think it would be) I don't want to have any trouble with that, so that's why I considered the individual holes.

I'm also wondering if I ought to bridge between the nailers with some extra 2X material just to ensure the cutout is linked up well to the rest of the floor.

Anyone ever do anything like this?
1MoreProject is offline   Reply With Quote
Old 04-13-2011, 08:03 PM   #4
Member
 
Join Date: Mar 2011
Location: vernon,bc,canada
Posts: 31
Default

2nd Floor temporary access openings


you will want to "bridge" between the nailers. The floor will be spongy along the seams if you don't.
craig4 is offline   Reply With Quote
Old 04-15-2011, 11:42 AM   #5
Newbie
 
Join Date: Apr 2011
Posts: 8
Default

2nd Floor temporary access openings


Thanks, I think that is a good idea. I'll figure out a way to get some good support across the joist bays, and probably glue and screw to the floor at the seams, as well.

So I'm just kind of wondering... Is my overall idea sound? Or am I thinking of something here that no one in their right mind would consider...
1MoreProject 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
Access Door Panels For Tiled Fireplace Surround Fire4Effect Tiling, ceramics, marble 0 09-07-2010 01:12 PM
Installing and attic access and a "What is this?" cbaileyau General DIY Discussions 16 12-19-2009 02:54 PM
Large metal "tabs" in openings cut in bi-level rim joist... What are they? Insulate? nutlog Building & Construction 9 11-09-2009 03:19 PM
Finishing off access door panel TanMan Building & Construction 12 02-05-2009 05:59 PM
Filling in large openings in concrete foundation shtoink Building & Construction 10 12-04-2008 04:03 PM




Top of Page | View New Posts

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