information - Scottish Natural Heritage
information - Scottish Natural Heritage
information - Scottish Natural Heritage
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Countryside Commission for Scotland<br />
Battleby Redgorton Perth PH1 3EW<br />
© Perth (0738) 27921<br />
VIEWPOINT INDICATOR FIXING<br />
Peripheral studs threaded or ragged,<br />
6mm dia., 6mm long<br />
Central pivot stud<br />
6mm dia., 50mm long<br />
Peripheral slots<br />
cut 8mm wide<br />
at 275mm radius.<br />
Hole at centre 12mm dia<br />
12mm between slots C<br />
At wide spans<br />
(> 125mm)<br />
bore hole<br />
in stone to<br />
take plug<br />
Fixing Procedure:<br />
2.<br />
3.<br />
4.<br />
6.<br />
7.<br />
600mm dia. 6mm thick acrylic disc.<br />
Set plugs at appropriate positions in mortar<br />
joints.<br />
Ensuring that the centres of slots in acrylic<br />
disc are orientated to allow accurate final<br />
adjustment, mark centres for fixing-plugs.<br />
Bore and countersink acrylic disc.<br />
When mortar is set, screw down acrylic<br />
onto a thin bed of soft, fine mortar, keeping<br />
peripheral slots clear of excess mortar.<br />
Fill slots and coat acrylic disc with<br />
'Araldite'.<br />
Fill central hole with 'Rockite' grouting.<br />
Press home s/steel disc, slewing to give<br />
final, accurate orientation.<br />
© c.c.s.<br />
INFORMATION<br />
2.2.9<br />
SHEET<br />
600mm dia. 16g. stainless steel disc,<br />
image deep-etched, filled black 6mm dia. stud<br />
welded to plate<br />
Section at edge<br />
of s/steel disc<br />
c/sink underside of slot<br />
Section at edge<br />
of acrylic disc<br />
Heavy duty plugs set in<br />
concrete to take brass screws<br />
'Araldite'<br />
•1½ x 12 gunmetal or<br />
brass c/sunk screw<br />
'Rawlplug' or 'Thunderplug'
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