Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                       VIRIDIAN III - Landscape Works

10.    DRAINAGE SWALES


10.1   ROCK PLACEMENT

10.1.1 GENERAL
The Landscape Contractor will be responsible for gravel swales under storm water outlets
off buildings, storm water sheet run-off from buildings, and landscape swales as indicated on
the landscape drawings. All other swales by Civil Contractor.

Supply and install river rock as indicated on the drawings. Refer to Landscape Plans for
placement.

Place existing site boulders to edge of swale as per Builder’s instruction on site. Refer to
landscape plans for reference. Do not obstruct water flow with retaining boulders. All works
to be setout and approved by Landscape Architect and Engineer prior to installation.

10.2   GRAVEL SWALES

10.2.1 GENERAL
Install gravel swales to locations adjacent buildings for sheet water run-off as shown on the
landscape drawings and detail. Excavate localised drainage swale for visual appearance.
Ensure ponding does not occur. Grade surrounding areas to dissipate water away from
drainage swales to avoid catchment of large volumes of water.

10.2.2 STORM WATER COLLECTION PITS
Install storm water collection pits to base of storm water pipes as per the landscape
drawings and detail. Collection pits will be suitably sized to hold water volumes as per
engineer’s detail.

10.3   RIVER ROCK PLACEMENT

10.3.1 GENERAL

Supply and install river rock to engineer’s specification as indicated on the drawings. Refer
to Landscape Plans for placement.

10.3.2 ROCK TYPE

   ƒ   100-200mm Dressed River Gravel

10.4   BOULDER PLACEMENT

10.4.1 GENERAL

Site boulders will be supplied from storage off-site by the Principle. Landscape Contractor
responsible for placement and installation of boulders once on site. Place boulders to
locations as specified by landscape drawings, and as per instructions on site by builder or as
deemed necessary on site by builder or engineer to stabilise slope.

                                     END OF SECTION




EDAW Aust                             Page 30                       February 2008