Reference Specifications for Civil Engineering Work 2001



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3.5Finishing Base Surfaces


Final trim

Grade and trim the base course surface to the specified tolerances to produce a hard, dense, tightly packed surface free of lenses, compaction planes and caking.



Traffic on uncompleted work

Give notice before opening the pavement to traffic before the work is completed. Provide adequate means of protection.


3.6Tolerances


Surface level

General: Provide finished sub base and base surfaces, which are evenly graded between level points, free draining and conform to the required tolerances.

Smoothness: As normally produced by a grader blade (except for batters without topsoil).

Tolerances: The limits in the Table 3.1 apply to the finished surface unless overridden by the requirements for the finished level and thickness of the surfacing.

Table 3.1 – Tolerances

Item

Level tolerance

Absolute


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