Landscape Specification

CONTENTS

15.2.       GARDEN TYPES

 GA01: Garden Bed Profile 01 - Planting – On Grade

 Mulch –100mm depth, ‘Medium’ grade, aged hoop pine bark fines
 Soil A - 400mm depth ‘On Grade soil media A’
 Soil B - where trees are planted, 600mm depth ‘On Grade soil media B’
 Subgrade Preparation - Remove all existing weed material using glyphosate herbicide (to be applied minimum
 two weeks prior to lawn installation). Rip to 150mm depth. Where clay conditions are found, incorporate
 gypsum or clay breaker at the rate of 100g/m2.
 Where full sand subgrade is found, Clay mix to be added to the ripped 150mm, sandy sub-grade. Soil tests of
 sub-grade to be undertaken before works commence. Clay additives to be confirmed with Landscape
 architect for approvals, before installation.

 GA02: Garden Bed Profile 02 - Planting – Bio-basin Base

 Mulch –50mm depth, fine sugar cane mulch
 Jute Matting - 750gsm, biodegradable jute matting, Colour: natural, Pinning: Ensure the matting strips are
 firmly placed with one row of pins, with additional pinning along each edge, overlap and each row along the
 middle. Space pins no more than 1.0 m apart in each row and centrally to alternate with previous row. Ensure
 ends and overlapping joints are pinned no more than 450 mm apart. Pins are to be flush with ground.
Subgrade Preparation – Strip out temporary turf & geofabric (installed by civil contractor). Remove all sediment,
existing weed material.



 GA03: Garden Bed Profile 03 - Planting – Bio-basin Batters

Subgrade preparation - Add gypsum at a rate of 1kg/m2. Add dolomite lime at a rate of 150g/m2 and Cultivate
to 150 mm depth. Where full sand subgrade is found, Clay mix to be added to the ripped 150mm, sandy sub-
grade. Soil tests of sub-grade to be undertaken before works commence. Clay additives to be confirmed with
Landscape architect for approvals, before installation.
Soil depth & type - 300mm depth ‘On Grade soil media A’
Subgrade Preparation - Remove all existing weed material using glyphosate herbicide (to be applied minimum
two weeks prior to lawn installation). Rip to 150mm depth. Where clay conditions are found, incorporate
gypsum or clay breaker at the rate of 100g/m2
Mulch depth & type - 100mm deep, 25mm grade, aged / composted Hoop Pine bark.
Jute Matting - 750gsm, biodegradable jute matting, Colour: natural, Pinning: Ensure the matting strips are firmly
placed with one row of pins, with additional pinning along each edge, overlap and each row along the middle.
Space pins no more than 1.0 m apart in each row and centrally to alternate with previous row. Ensure ends and
overlapping joints are pinned no more than 450 mm apart. Pins are to be flush with ground.


 GA04: Garden Bed Profile 04 – Groundcover Planting – On Structure
 Mulch – 100mm depth aged hoop pine bark fines
 Soil – min. 300mm depth ‘On Slab soil media A’ – Soil profile to be crowned in centre at 1:6 grade.
 Sand filter - 50mm depth (depth varies) fine washed sand, placed over filter fabric
 Filter fabric - Bidim A12 or approved equivalent, to have 150mm overlap at joints over drainage layer
 Drainage layer - 30mm thick Elmich VersiDrain 30 or approved equivalent
 Topping – minimum 40mm depth cementitious topping to fall to drains placed over waterproof membrane
 Waterproof membrane – Refer to architect’s documentation.
 To planter sides – 3mm 500gsm corflute protection board (supplier - AUSDRAIN)
 Refer detail. -



URBIS
URB-SPC-LAN-P0025138 - IFC.DOCX                                                                           PAGE   55