specification for subdivision construction of road works and drainage
specification for subdivision construction of road works and drainage
specification for subdivision construction of road works and drainage
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The Contractor shall allow <strong>for</strong> any means necessary <strong>for</strong> adjusting the moisture content <strong>of</strong> the fill to<br />
achieve the required compaction.<br />
Any surplus cut material shall be removed from site <strong>and</strong> disposed <strong>of</strong>f at a location approved by the<br />
local authority.<br />
Earth<strong>works</strong> shall be trimmed to a neat finish within the tolerance specified. The surface shall be even<br />
<strong>and</strong> con<strong>for</strong>m to the intent <strong>of</strong> the drawings.<br />
E6<br />
WATER IN EXCAVATIONS<br />
The Contractor shall at all times maintain excavations free from water regardless <strong>of</strong> source or method<br />
<strong>of</strong> entry to the excavation. The Contractor shall allow <strong>for</strong> cut-<strong>of</strong>f drains, well points, bores, drain<br />
diversions, pumps <strong>and</strong> any other means necessary to keep excavations dry <strong>and</strong> in a safe condition<br />
<strong>and</strong> shall repair or reinstate to the satisfaction <strong>of</strong> the Engineer any damage caused by failure to keep<br />
the excavation free from water.<br />
E7<br />
EXCAVATION IN ROCK<br />
The different kinds <strong>of</strong> material encountered in excavation shall be classified under the headings<br />
"Other than Rock" or "Rock", <strong>and</strong> shall have the following meanings:<br />
"Other than Rock" shall mean all kinds <strong>of</strong> materials which can be ripped by a track dozer up to<br />
100kw power <strong>and</strong> 15t mass with one tyne or broken by a track excavator up to 75kw power <strong>and</strong> 15t<br />
mass with a rock bucket.<br />
"Rock" shall mean hard material which requires ripping or breaking by a larger machine or hydraulic<br />
rock breaker <strong>and</strong> is in fact so ripped or broken.<br />
Where excavation in rock occurs, the Contractor shall be responsible <strong>for</strong> any overcut beyond that<br />
specified <strong>and</strong> all necessary backfill to allow correct line <strong>and</strong> level to be maintained.<br />
E8<br />
EXCAVATION IN EXISTING ROAD RESERVES<br />
Excavation shall be kept to a minimum in existing <strong>road</strong>ways, footpaths, other paved areas <strong>and</strong><br />
developed verges. Lawn is to be cut in sods or rolls, removed <strong>and</strong> stacked prior to excavation. Lawn<br />
is to be reinstalled <strong>and</strong> level immediately after backfill <strong>of</strong> the trenches.<br />
Any irrigation lines which are damaged during the <strong>works</strong> shall be reinstated immediately upon backfill<br />
<strong>of</strong> the excavations. Pipes shall be cut <strong>and</strong> capped to allow use <strong>of</strong> the system during <strong>works</strong>.<br />
The Contractor shall ensure minimal damage to all vegetation <strong>and</strong> any damage shall be reinstated to<br />
the satisfaction <strong>of</strong> the Engineer.<br />
E9<br />
STABILISATION<br />
The disturbed soil on the Site other than the <strong>road</strong> <strong>for</strong>mation shall be stabilised by either dry seeding<br />
<strong>and</strong> covering with shredded vegetation or hydromulch as soon as practicable after the top soil has<br />
been satisfactorily replaced <strong>and</strong> regraded.<br />
Specification <strong>for</strong> Subdivision Construction <strong>of</strong> Road Works <strong>and</strong> Drainage<br />
Rev. 1 – February 2013<br />
14
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