How Big Is An Egress Window
Egress Window Size - How to Mensurate:
This page shows how to measure your house for:
- Egress Window Well size needed
- Egress Window size needed
Measuring for an Egress Well
Step i:
Measure from the maximum grade level (basis level) downward to the floor level of the basement.
This gives you dimension A in inches:
Dimension A: ____________ inches
Footstep 2:
Subtract 28" from dimension A to get the minimum required height of the Egress Window Well.
Dimension A _________" - 28" = ____________" Minimum top of the Egress Window Well
The 28" deduction is calculated as follows:
44" maximum height from the basement flooring to the lesser of the egress window to meet egress code requirements*. Subtract 44"
The Egress Well must extend below the window about 12" depending on the Egress Window Well model called. See the installation instructions to determine the exact measurement. Add 12"
The Egress Well must extend above the class level (basis level) at least 4 inches. Take into account that the form must exist sloped away from the house and well for proper drainage. A minimum of 1" slope per foot from the firm is a good rule of thumb.
(44" window height from the finished floor* - 12" that the well should extend below the window for drainage - 4" that the well should extend higher up the grade = 28" full deduction from measurement "A")
Step 3:
The minimum width of the Egress Well is determined by the size of the Egress Window you would like to employ. The inside width of the Egress Well must be wider than the Egress Window.
Measuring for an Egress Window
The width of the Egress Window must fit inside the Egress Well.
There are also code requirement to consider when picking a window. The window must take:
In that location are also lawmaking requirements for both natural calorie-free and ventilation.
For natural low-cal, the glass area, in foursquare feet, must be at least 8% of the full floor area that the Egress Window in servicing. For instance: If you had an egress window that has a glass area of 48" x 48" or 16 foursquare anxiety, that would service an area up to 200 foursquare anxiety. sixteen square feet = 8% of 200 square feet. If the basement area y'all wish to have serviced by an egress window is larger than this viii% rule allows, you can use multiple Egress Windows to attain the minimum 8% of glass area for natural light.
For ventilation, the window's clear open surface area, in square feet, must be at to the lowest degree iv% of the total floor area that the Egress Window is servicing. For example: if you had an egress window that has a clear opening of 24" x 48" or 8 square feet. That would exist able to service an expanse no greater than 200 foursquare anxiety. 8 foursquare feet = iv% of 200 foursquare anxiety. If the basement area you wish to take serviced by an egress window is larger than this iv% rule allows, you tin can apply multiple Egress Windows to attain the minimum 4% of clear opening size for ventilation.
Source: https://www.egresswindows.com/how-to-measure
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