Pit depth
This is the area under the lower floor level, which houses the platform lift mechanisms. The pit depth is dependent on the rise of the staircase, as per the pit depth chart below:
| Lift type | Total rise | Required minimum pit depth (including cladding and bedding space) |
|---|---|---|
| This is the smallest depth that can be accommodated and is required for our Sesame Jubilee Lift or the Sesame Thames Stair Lift | 0 to 999 mm | 160 mm plus the thickness of the cladding. |
| Horizontally retracting stair lift such as the Kensington Stair Lift | 0 to 650 mm | 450 mm (including cladding and bedding) |
| Horizontally retracting stair lift such as the Sesame Regent Stair Lift | 0 to 999 mm | 650 mm (including cladding and bedding) |
| Vertically retracting stair lift such as the Sesame Victoria Stair Lift & Seattle ADA Lift | All | 850 mm for the Victoria & 1,640 mm for the Seattle |
| Rising button box on lifts such as the Sesame Knightsbridge Stair Lift | All | 1,350 mm |
| Rising barrier on upper landing on lifts such as the Mayfair Stair Lift | 0 to 999 mm | 1,600 mm below the upper landing finish floor, or 650 mm below the lower landing floor when the rise is between 950 mm and 999 mm |
| Rising barrier on lift on lifts such as the Sesame Whitehall Stair Lift | 0 to 2999 mm | 1,800 mm below lower landing finish floor (1,600 mm on special design) |
If you have concerns about pit depth, please contact us – we may still have a solution for you! Our design team can work around pit restrictions to some extent, especially in cases where the area below is designated for rentable space. Get in touch, and we’ll help you find the right solution.