Storm Water Pits

Precast Concrete Stormwater Pits

-Our precast concrete stormwater pits are an essential part of any drainage system, designed to collect and direct surface water into underground pipe networks to prevent flooding and protect surrounding infrastructure.
-Manufactured in a controlled environment to ensure strength, consistency and long-tern durability. Precast construction allow for faster installation and improved site efficiency.
-Stormwater pits also commonly know by different names depending on their application and configuration, including drainage pits, grated pits, grated inlet pits, gully pits, catch pits, inlet pits, junction pits and inspection pits. Other configuration include kerb inlet pits and side entry pits.
-All standard pits are structural engineered to “Class D”
-Available in multiple configurations and depths, our stormwater pits can be tailored to suit projects requirements, including risers, lids, grates and custom penetrations
-All Pit measurements are internal

200 x 200 Stormwater Pits

Pit

  • P4998 – 200 x 200 x 200h
    No Extension Available

300 x 300 Stormwater Pits

Pits

  • P49980 – 300 x 300 x 300h

Extensions

  • P4979 – 300 x 300 x 150h
  • P49850 – 300 x 300 x 300h

300×300 Stormwater Pit Drawing
Download Technical Drawing (PDF)

300×300 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

450 x 450 Stormwater Pits

Pits

  • P5001 – 450 x 450 x 450h
  • P50011 – 450 x 450 x 600h

Extensions

  • P4980 – 450 x 450 x 150h
  • P4985 – 450 x 450 x 300h
  • P50031 – 450 x 450 x 450h

450×450 Stormwater Pit Drawing
Download Technical Drawing (PDF)

450×450 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

600 x 600 Stormwater Pits

Pits

  • P5002 – 600 x 600 x 600h
  • P50021 – 600 x 600 x 900h

Extensions

  • P4981 – 600 x 600 x 150h
  • P4986 – 600 x 600 x 300h
  • P50041 – 600 x 600 x 450h
  • P4990 – 600 x 600 x 600h
  • P49991 – 600 x 600 x 750h

600×600 Stormwater Pit Drawing
Download Technical Drawing (PDF)

600×600 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

600 x 900 Stormwater Pits

Pits

  • P50062 – 600 x 900 x 600h
  • P5004 – 600 x 900 x 900h
  • P50063 – 600 x 900 x 1200h

Extensions

  • P4982 – 600 x 900 x 150h
  • P4988 – 600 x 900 x 300h
  • P50061 – 600 x 900 x 450h
  • P4992 – 600 x 900 x 600h
  • P49992 – 600 x 900 x 750h
  • P4994 – 600 x 900 x 900h
  • P49950 – 600 x 900 x 1150h

600×900 Stormwater Pit Drawing
Download Technical Drawing (PDF)

600×900 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

750 x 750 Stormwater Pits

Pits

  • P5003 – 750 x 750 x 750h

Extensions

  • P4983 – 750 x 750 x 150h
  • P4987 – 750 x 750 x 300h
  • P50051 – 750 x 750 x 450h
  • P4991 – 750 x 750 x 600h
  • P49993 – 750 x 750 x 750h

750×750 Stormwater Pit Drawing
Download Technical Drawing (PDF)

750×750 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

900 x 900 Stormwater Pits

Pits

  • P5005 – 900 x 900 x 900h
  • P50052 – 900 x 900 x 1200h

Extensions

  • P4984 – 900 x 900 x 150h
  • P4989 – 900 x 900 x 300h
  • P50071 – 900 x 900 x 450h
  • P4993 – 900 x 900 x 600h
  • P49994 – 900 x 900 x 750h
  • P4995 – 900 x 900 x 900h
  • P49951 – 900 x 900 x 1150h

900×900 Stormwater Pit Drawing
Download Technical Drawing (PDF)

900×900 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

1000 x 750 Stormwater Pits

Pits

  • P50053 – 1000 x 750 x 900h
  • P50054 – 1000 x 750 x 1200h

Extensions

  • P49841 – 1000 x 750 x 150h
  • P49891 – 1000 x 750 x 300h
  • P50072 – 1000 x 750 x 450h
  • P49931 – 1000 x 750 x 600h
  • P49995 – 1000 x 750 x 750h
  • P49971 – 1000 x 750 x 900h
  • P49998 – 1000 x 750 x 1150h

1000×750 Stormwater Pit Drawing
Download Technical Drawing (PDF)

1000×750 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

1200 x 900 Stormwater Pits

Pits

  • P50064-2.4m – 1200x900x1200h
    (Class D to 2.4m)
  • P50064-4m – 1200x900x1200h
    (Class D to 4m)

Extensions

  • P49840 – 1200 x 900 x 150h
  • P49890 – 1200 x 900 x 300h
  • P50070 – 1200 x 900 x 450h
  • P49930 – 1200 x 900 x 600h
  • P49996 – 1200 x 900 x 750h
  • P49999 – 1200 x 900 x 900h
  • P49970 – 1200 x 900 x 1150h

1200×900 Stormwater Pit Drawing
Download Technical Drawing (PDF)

1200×900 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

1200 x 1200 Stormwater Pits

Pits

  • P5006-2.4m – 1200 x 1200 x 1200h
    (Class D up to 2.4m)
  • P5006-4m – 1200 x 1200 x 1200h
    (Class D up to 4m)

Extensions

  • P49842 – 1200 x 1200 x 150h
  • P49892 – 1200 x 1200 x 300h
  • P50073 – 1200 x 1200 x 450h
  • P49932 – 1200 x 1200 x 600h
  • P49997 – 1200 x 1200 x 750h
  • P4996 – 1200 x 1200 x 900
  • P4997 – 1200 x 1200 x 1150

1200×1200 Stormwater Pit Drawing
Download Technical Drawing (PDF)

1200×1200 Stormwater Pit Riser Drawing
Download Technical Drawing (PDF)

Custom Pits

Plastic Covered Step Iron

Many other custom size Pits Available contact Head office for a quote

  • P60042 – Step Iron only
  • P60043 – Step Iron and Fitting

Lid Options

Available in
Light, Medium, Heavy Duty

  • Grate and Frame Bikesafe
  • Drop In Grate BikeSafe
  • Encased Grate and Frame Bikesafe
  • Grate and Frame Heelguard
  • Drop In Grate Heelguard
  • Encased Grate and Frame Heelguard
  • Access Cover & Frame Infill Style
  • Access Cover & Frame Solid Top Style
  • Encased Access Cover & Frame Infill Style
  • Encased Access Cover & Frame Solid Top Style
  • Concrete Lid & Surround

Stormwater Pit Quick Reference guide

Pit Size300mm450mm600mm750mm900mm1200mm
300×300120kg–––––
450×450–300kg350kg–––
600×600––400kg–450kg–
600×900––500kg–800kg1000kg
750×750–––700kg––
900×900––––1000kg1300kg
1000×750––––1300kg1400kg
1200×900–––––1500kg
1200×1200–––––1700kg

All weights are approximate and subject to manufacturing tolerances.

Stormwater Pit Extensions Quick Reference Guide

Pit Size150mm300mm450mm600mm750mm900mm1150mm
300×30040kg85kg–––––
450×45060kg120kg180kg––––
600×60097kg194kg310kg320kg490kg––
600×900117kg234kg385kg515kg650kg775kg950kg
750×750117kg234kg385kg515kg750kg––
900×900118kg256kg435kg585kg750kg895kg1050kg
1000×750138kg276kg455kg605kg800kg915kg1200kg
1200×900140kg325kg540kg725kg900kg1200kg1400kg
1200×1200200kg400kg600kg800kg1000kg1400kg1600kg

All weights are approximate and subject to manufacturing tolerances.

Stormwater Pit
Stormwater Pit & Haunched Slab & Side Entry Ext