Schedule 1 Bench marks

Schedule 1 Bench marks

section 47(2) and (3)

| Mark | Form and style of mark | Requirements for inserting mark | | Permanent Survey Mark | As for the permanent survey marks specified in Schedule 4. | As specified in Schedule 4. | | Chiselled triangle | Chiselled equilateral triangle with sides at least 80mm long, 10mm wide and 10mm deep. | Cut in horizontal concrete, stone or another substantial structure.The top surface of the concrete or stone within the triangle is the reference point. | | Bolt or nail | Non-corrodible bolt or nail at least 50mm long and 3.5mm wide. | Chiselled triangle must be cut around the mark.Inserted vertically into timber, rock, concrete or another substantial structure.The top of the bolt or nail is the reference point. | | Specific point | A specific point on a permanent and substantial structure. | Must have a horizontal surface that may be accessed by a levelling staff.The specific point must be adequately described.If practicable, a chiselled wing must be cut and directed to the mark. | | “Bench Mark” token | A non-corrodible token at least 32mm wide and 1.5mm thick with “Bench Mark” permanently stamped, engraved or etched on the upper surface. | Secured by a—(a) non-corrodible nail that is at least 50mm long and 5mm wide, or(b) non-corrodible screw or domed rivet that is long enough to securely fix the token to the surface and at least 5mm wide. |