Landscape Specification

CONTENTS

14.2.       SOIL TYPES

 On Grade soil media - Turf


 Quality – Soil must be free from any ‘unwanted materials’
 Physical properties particle sizes

         Property                   Units            Target Range

         2.0 mm (fine gravel)       % retained       < 10
         1.0 mm (very coarse        by mass          < 10
         sand)
         0.5 mm (coarse sand)                        10 - 30       30 - 50
         0.25 mm (medium sand)                       20 - 40
         0.1 mm (fine sand)                          10 – 30
         0.05 (very fine sand)                       5 – 15 (max 25 % combine vfs, Si + Clay
                                                     combined)
         0.002 mm (silt)                             5 – 10 (< 12 % Si + Clay combined)
         < 0.002 mm (clay)                           3 – 8 (< 12 % Si + Clay combined)
         Large particles                             2 – 20 mm = < 10 %, > 20mm = 0 %
         Organic matter content     % w/w            2 to 8
         Permeability               mm/hour          > 30 (@16 drops by McIntyre Jakobsen)
         Wettability (AS4419)       mm/min           >5
         Dispensability in water                     1 or 2 (AS 4419 Category)

Chemical properties

         Property                   Units            Target Range

         pH in water (1:5)          pH units         5.4 – 7.5
         pH in CaCl2 (1:5)          pH units         5.2 – 7.5
         Electrical conductivity    dS/m             < 0.5
         (1:5)
         Exchangeable Na            % of eCEC        <7
         percentage
         Exchangeable Ca/Mg         Ratio            3-9
         ratio
         Available phosphorus       mg/kg            50 – 150
         Mehlich 3
         Olsen                                       20 - 50
         Available nitrogen         mg/kg            30 - 100
         (nitrate N + ammonium
         N)




URBIS
URB-SPC-LAN-P0025138 - IFC.DOCX                                                                PAGE   48