Site Requirements for PermEntry®
Minimum Work Area
1. Width of opening in foundation wall should be 40" maximum for all types.
2. When foundation is back-filled, leave minimum work area for PermEntry® installation as shown.
3. Ensure proper soil drainage at base of unit - recommend exterior drain tile to daylight.
For 9' Basement Wall
If your footing to the outside grade height is greater than 84", you will need to pour the extension T.
How to Order
1. Determine the height of foundation wall from top of footing.
2. Determine dimension from proposed finished grade to top of foundation wall.
3. Back fill base of casting with 1 ft of gravel and rest with dirt.
4. Refer to types available and select size to assure top of PermEntry® stairwell will be 2" to 6" above finished grade.