information - Scottish Natural Heritage
information - Scottish Natural Heritage
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