SG 221

Preparation & Ground Work - Site Management

ID
Title
Compliance Level
Expand All
1
General
Mandatory
Mandatory

As per current NATSPEC.

2
Execution
Mandatory
Mandatory

As per current NATSPEC except as follows:

2.8 Tree Protection
 

Work near trees

GUIDE NOTE:  Delete subclause “Backfilling” nominated in NATSPEC, building template/worksection and include the following 
 
Backfilling: Backfill to excavations around tree roots with topsoil mixture as specified in SG / LANDSCAPE SOILS. Add fertilizer at the rate specified in SG / LANDSCAPE SOILS. Place the backfill in layers, each of 300 mm maximum depth, compacted to a dry density similar to that of the original or surrounding soil.  Do not backfill around tree trunks or over root zone to a height above the original ground surface unless approved.  Immediately after backfilling, thoroughly water the root zone surrounding the tree. 
2.11 Site Clearing

 

Clearing and grubbing

GUIDE NOTE:  Include the following paragraph

Surface Layer:  Remove the surface layer of the natural ground.  Keep topsoil removal to a minimum.
2.19 Substation Site
 

GUIDE NOTE:  Include this clause when applicable.

Requirement
Clear the area indicated for the location of the sub-station easement in accordance with SG / SITE CLEARING, providing a satisfactory excavatable site, free of all services and obstructions which could interfere with the installation of an earthing electrode which may extend to a depth of 10m or more.

 

Levelling
Level the site by removal of topsoil and/or filling and suitable compaction.  Any filling material shall be clean, stable and reasonably fine.  Where the site is cut into a slope, provide retention of the bank and the diversion of all surface water from the sub-station.

Carry out all work to the satisfaction of the local supply authority.
Home > Specification Guide > Preparation & Ground Work - Site Management