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information - Scottish Natural Heritage

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Edging is important<br />

where disabled access<br />

is intended.<br />

To curve edge-rails<br />

make sawcuts %<br />

way through at app.<br />

100mm intervals.<br />

NOTE: For a trim appearance it is<br />

essential that the boards at the bend<br />

are out to an even taper - use a<br />

line and peg to make it thus:-<br />

Drawing exaggerated forclarity<br />

NOT TO SCALE<br />

©C.C.S revised 1989<br />

offcut<br />

COMPLETE BOARD<br />

PLAN<br />

Isometric View<br />

To maintain a regular curve<br />

use the stake and line as<br />

compasses to position the<br />

outer ends of the boards.<br />

Countryside Commission for Scotland Battleby, Redgorton, Perth PHI 3EW<br />

Telephone: (0738) 27921, Fax: (0738) 30583<br />

Edge rail<br />

shown<br />

6.9<br />

N o t e s<br />

1A board-walk is an obtrusive element in<br />

the landscape, and should be used<br />

selectively. They can add interest to wildlife<br />

interpretation by allowing close access to<br />

interesting vegetation. The use of curved runs<br />

adds interest and enables the board-walk to be<br />

fitted into natural uneven terrain. They are<br />

most useful for the protection of fragile areas<br />

to which controlled access is required, and<br />

provide a smooth, firm surface for wheelchair<br />

users. If used as ramps, the maximum gradient<br />

should not exceed 1:12, but 1:20 is better.<br />

2Surface coatings or pressure treated<br />

timber should not be used where<br />

subsequent damage to adjacent wildlife may<br />

occur. This is specially important in Sites of<br />

Special Scientific Interest. In such cases use<br />

larch for ground/water contact members and<br />

check regularly for rot.<br />

FINISHES<br />

3Subject to note 2 above, all timber<br />

should be pressure-treated against<br />

fungal rot. For a non-slip surface spray boards<br />

with hot tar and dust with grit, or fix chicken<br />

wire to surface, using galvanised staples.<br />

C u t t i n g L i s t<br />

PER 2.0 meter RUN<br />

Piles 4-off 1500x100x 100mm<br />

Boards 13-off 1500x150x50mm<br />

Stringers 2-off 2000x100x100mm<br />

EdgeRail 4lin. metres 50x50mm<br />

Brackets 4-off 200x100x50mm<br />

F i x i n g s<br />

Galv. Nails 26-off 75mm<br />

60-off 100mm

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