Landscape Technical Specification - OPW14/0197

Doonella – Stage C



3.       BASIC EXCAVATION



3.1.1    GENERAL

Refer Civil Engineer for Bulk Earthworks and Excavation.

Do not disturb services. Locate all services before commencing any excavation and cultivation. Refer to
Civil Engineer for service locations. Excavate / cultivate areas within 500mm of services by hand.



3.1.2    LOCALISED EXCAVATION

Excavate and dispose all surplus material to allow for depths required for all landscape elements below:

General Planting areas: 400mm

General Turf areas: 100mm

Tree Planting: Varies for different rootball sizes. Refer planting section in this specification.



3.1.3    SUBGRADE PREPARATION

During cultivation, thoroughly mix in any materials to be incorporated into the subsoil. Cultivate manually
within 300mm of paths and structures. Remove stones exceeding 25mm, clods of earth exceeding 50mm
and any weeds, rubbish or other deleterious material brought to the surface during cultivation.

Cultivate the subsoil to all planting and turf areas to a depth of 150mm.



3.1.4    TRIMMING OF SUBGRADE

The subgrade shall be shaped to the profile required. The surface of the subgrade shall be compacted,
trimmed, profiled and check levelled prior to placing of pavement materials.

Surface of subgrade shall be left free from rubbish, stones, felled timber and brush, and left smooth and
clean, true to the grade and levels shown on the drawings.

The allowable variation on design level at any point shall be 50 mm provided that all areas are free draining
and no ponding of water occurs.



                                               END OF SECTION




AECOM                                          6