DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Building & Construction (http://www.diychatroom.com/f19/)
-   -   Egress window dimensions (http://www.diychatroom.com/f19/egress-window-dimensions-26931/)

ClnlBrahm 09-16-2008 09:03 PM

Egress window dimensions
 
I know that an egress window must have 5.7 square feet of open space. Does that mean the window itself must be atleast 5.7 square feet, or that the exit space when the window is open must be 5.7 square feet?

Currently our plan is to have a window that is around 29 x 47. Would it still meet code if it was a standard window where you slide the bottom up (so that only half the actual window size would be an exit). Sorry if this sounds like a stupid question, I'm just really trying not to miss anything. Thanks

ClnlBrahm 09-16-2008 09:22 PM

In case I'm not making sense, would a window like this be code compliant if it was 29 x47 total?
http://i484.photobucket.com/albums/r...71591414md.jpg

concretemasonry 09-16-2008 09:38 PM

The importsnt thing is not the total size of the glazing, but the open area without detroying half the window.

I think there are also requirements for the openong size singe part of the requirements is to let in a firefighter with a tank.

Any responsible window supplier meets the national requirements for an egress window. If they do nnot certify it, do not buy it and look for another brand. - There are no secrets to qualifying windows.

On other thing that is important is the height above the finsihed floor for the sill when open. This is to permit children to get out, but the maximum can vary slightly according to jurisdictions. I have seen people delay putting down carpeting before the inspectio because they were to close for such an easy measurement.

Call your local code office for requirements even if you do not need a permit. If you go to sell, the area served as an egress for that window does not qualify, that area may not be included in the liveable square footage and your appraisal can be less. - That means more finacing problems for buyers.

ClnlBrahm 09-16-2008 10:15 PM

Thanks for the advice. We have the window cut-out set at 42" above the finished floor. (All of which is above grade on the outside-- our foundation is exposed several feet on the back exterior of the house). Did all the homework and spoke with our municipal code official before planning it. Our township requires an inspection to certify the finished product before approving the space as a bedroom, so we will be having an inspector in before laying the carpet.

At this point my main confusion was exactly what that 5.7 square feet entailed. So are you saying that the part of the window that opens into the outdoors must be 5.7 square feet? (sorry if I misunderstood, again, just trying to keep everything straight).

Termite 09-16-2008 11:15 PM

The square footage is determined by measuring the clear space of the opening you have to crawl through. So, open the window fully and take your measurements.

Based on the picture, the window sash is being tilted in, which is not a complaint means of obtaining egress on a double hung window. The way it is measured is to raise the sash as you would normally operate the window. Egress must be achieved by normal operation of the window, and without special tools or knowledge or disassembly of the window. If the codes official accepts removal of the sash for egress, he's screwing up.

Sliding it up is how egress is obtained.

The opening only has to be 5.7 square feet if it is above grade, like on a 2nd story bedroom. On a first floor bedroom the IRC code requires 5.0 square feet. That's because there's less chance for a ladder rescue.

The minimum dimensions concretemasonry mentioned are 20" wide, and 24" tall. That doesn't mean that you can do 20x24 instead of 5.7 square feet, it just establishes minimum width and height.

It takes a BIG double hung window to meet egress. It is common though. Many people choose casement windows for egress purposes just to keep the size of the window down.

ClnlBrahm 09-16-2008 11:35 PM

Thanks- I was actually just looking at casement windows in the time between posting this question and getting your responses. I think I've got it now, but just to be sure-- I just found an anderson casement window that is 24 4/8 by 35 15/16. If we were to have it installed within 44" of the finished floor, (mark is currently at 42 just to be safe), would that comply with standard code? (I know townships vary slightly, but mine requires a 20 x 24 with 5.7 sf opening within 44" of floor, so I've gathered that's standard). Thanks again, Mary

ClnlBrahm 09-16-2008 11:40 PM

This is the exact window model I'm talking about, just for reference http://i484.photobucket.com/albums/r...t/6a5f_1-1.jpg

Termite 09-16-2008 11:46 PM

Can't tell from the basic window dimensions. Remember, you're measuring the opening. With a casement, the sash encroaches into the opening, so you measure from the sash when open at 90 degrees over to the opposite side of the frame horizontally.

You should be able to look at Andersen's website and check the egress opening dimensions of the specific size of window you're looking at.

Like I said, if this is a first floor window, your inspector should allow 5.0 square feet and shouldn't require 5.7. You might clarify that with them if you end up being close.

Termite 09-16-2008 11:51 PM

Based on the dimensions you provided, I seriously doubt this window will work for you.

To simplify, if the egress opening is 24x35"...Which I don't think it is...

24x35 = 840 square inches
840 divided by 144 (square inches per square foot) = 5.8 square feet.

Take the sash into account, and the actual opening, and that window is too small.

Termite 09-16-2008 11:55 PM



Here's the entire list of their windows, showing clear opening on the left of the chart.
http://www.andersenwindows.com/servl...&ssbinary=true

ClnlBrahm 09-17-2008 01:57 AM

Quote:

Originally Posted by thekctermite (Post 158796)
Based on the dimensions you provided, I seriously doubt this window will work for you.

To simplify, if the egress opening is "...Which I don't think it is...

24x35 = 840 square inches
840 divided by 144 (square inches per square foot) = 5.8 square feet.

Take the sash into account, and the actual opening, and that window is too small.

We don't have an actual opening yet, but do have dimensions drawn onto the interior concrete wall. (The exterior foundation is exposed several feet above ground in the rear of the basement) We're currently in the process of choosing a mason to cut out the necessary area.

That being said, do you mean that an egress opening of 35" by 45" is probably too small to accommodate a code-compliant casement window when sills etc. are considered? If so, could you possibly give me any kind of direction on which way to go from here? I'm trying my best to abide by codes while renovating our basement, but it's frustrating knowing so little about the intricacies of the subject. Any help painting the answer to this question in black and white would be SO very appreciated.

Termite 09-17-2008 08:32 AM

Black and white? Ha! :laughing: Sometimes code is a big gray area, but not in this case. :no:

35x45 is a pretty good sized rough opening. I seriously doubt that you'll be able to get 5.7sqft with a double hung in that opening though. I'd really look at a casement instead, and you should have no trouble getting one to work.

Please clarify...Is the opening there now, or are you creating an opening in an existing concrete or block wall?

Be sure to have your mason leave room for the installation of some 2x material on all four sides of the window opening, because you'll need something to attach the window to. I'd recommend having the window on site before cutting the hole! Custom ordered windows can be hard to return if they don't fit.

Let me know what series of Andersen (or other brand) casement you'd like, and I'll help you determine if it will meet.

buletbob 09-17-2008 04:50 PM

Quote:

Originally Posted by ClnlBrahm (Post 158807)
We don't have an actual opening yet, but do have dimensions drawn onto the interior concrete wall. (The exterior foundation is exposed several feet above ground in the rear of the basement) We're currently in the process of choosing a mason to cut out the necessary area.

That being said, do you mean that an egress opening of 35" by 45" is probably too small to accommodate a code-compliant casement window when sills etc. are considered? If so, could you possibly give me any kind of direction on which way to go from here? I'm trying my best to abide by codes while renovating our basement, but it's frustrating knowing so little about the intricacies of the subject. Any help painting the answer to this question in black and white would be SO very appreciated.

with a ANDERSON window The window size is going to be CW## anythng with an X is going to be Egress window like CXW##
I keep all my second floor windows @ 36" above finished floor.
Hope this helps BOB

ClnlBrahm 09-18-2008 04:34 AM

Thanks everyone for your input. I think we've got it figured out, after having consultations with masons we're choosing from. We're using a 25 x 35" casement window, which will be 40 inches from the finished floor. (Ended up choosing a Pella instead of Anderson) KC- here's a link to the window we plan on having installed. I'm pretty sure it meets codes, but wouldn't mind the experienced opinion. Thanks!

http://www.lowes.com/lowes/lkn?actio...35L&lpage=none

buletbob 09-18-2008 05:24 AM

Quote:

Originally Posted by ClnlBrahm (Post 159083)
Thanks everyone for your input. I think we've got it figured out, after having consultations with masons we're choosing from. We're using a 25 x 35" casement window, which will be 40 inches from the finished floor. (Ended up choosing a Pella instead of Anderson) KC- here's a link to the window we plan on having installed. I'm pretty sure it meets codes, but wouldn't mind the experienced opinion. Thanks!

http://www.lowes.com/lowes/lkn?actio...35L&lpage=none

According to Pella that window you have chosen does not meet EGREES! Go with the 3535 or the 2541 or 3541, 2941 good luck BOB


All times are GMT -5. The time now is 11:39 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved