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)

MODEL: Nominal frame size

A (Internal base width mm)

B (Internal base length mm)

C (Internal diagonal – check mm)

2.36m x 3m

2300mm

3032mm

3805mm

3m x 3m

2945mm

3032mm

4227mm               

2.36m x 4.5m

2300mm

4532mm

5082mm

3m x 4.5m

2945mm

4532mm

5405mm              

2.36m x 6m

2300mm

6032mm

6456mm

3m  x 6m

2945mm

6032mm

6712mm                

2.36m x 7.5m

2300mm

7532mm

7875mm

3m x 7.5m

2945mm

7532mm

8087mm             

2.36m x 9m

2300mm

9032mm

9320mm

3m x 9m

2945mm

9032mm

9500mm                

2.36m x 10.5m

2300mm

10532mm

10780mm

3m x 10.5m

2945mm

10532mm

10936mm

2.36m x 12m

2300mm

12032mm

12250mm

3m x 12m

2945mm

12032mm

12387mm

2.36m x 15m

2300mm

15032mm

15207mm

3m x 15m

2945mm

15032mm

15318mm

2.36m x 18m

2300mm

18032mm

18178mm

3m x 18m

2945mm

18032mm

18271mm

2.36m x 21m

2300mm

21032mm

21157mm

3m x 21m

2945mm

21032mm

21239mm

2.36m x 24m

2300mm

24032mm

24142mm

3m x 24m

2945mm

24032mm

24212mm

 

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