Domestic tunnel series base dimensions

(Materials not supplied)

Exact base dimensions for the Redpath domestic tunnel series models.
The tunnelhouse is already supplied with aluminum base rails however if you wish to build a separate additional base and rest the tunnelhouse onto it, then It is important to build the bases exactly to size as shown, as the internal base rail needs to finish flush with the inner edge of the base boards. The base should be level across the buildings width and length.

The base may be made from timber or sleepers. It is a personal choice of style and appearance, however the base must be well secured to the ground as the frame will be relying on it for security in high winds.

If soft ground (peat, sand, loose soils) etc. prevail, then take extra care to ensure that the base is secured with deeper ground anchors (pegs, reinforcing rod etc.)

Note that adding a base will increase the height of the tunnelhouse and require you to step ‘over’ the taller base to enter the tunnelhouse. 

INTERNAL BASE DIMENSIONS:

MODEL: Nominal frame size

A (Internal base width mm)

B (Internal base length mm)

C (Internal diagonal – check mm)

2.36m x 1.5m

2300mm

1532mm

2764mm

2.36m x 3m

2300mm

3032mm

3806mm

2.36m x 4.5m

2300mm

4532mm

5082mm

2.36m x 6m

2300mm

6032mm

6456mm

2.36m x 7.5m

2300mm

7532mm

7875mm

2.36m x 9m

2300mm

9032mm

9320mm

2.36m x 10.5m

2300mm

10532mm

10780mm

2.36m x 12m

2300mm

12032mm

12250mm

                                                  2.36m x 15m                                           2300mm

15032mm

                                                     15207mm
                                                  2.36m x 18m                                           2300mm                                          18032mm                                                      18178mm
                                                  2.36m x 21m                                           2300mm                                          21032mm                                                      21157mm
                                                  2.36m x 24m                                           2300mm                                          24032mm                                                      24142mm

Note: Please check with your local council whether a building permit is required for your Tunnelhouse before construction commences