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A pit that collects rainwater or excess water is called a stormwater or drainage pit

Usually drainage pit or Junction pit is made from plastic or concrete. However plastic pit might not be very durable and concrete pit could be too heavy for handling. Orca pit are made from polymer concrete which is both durable and light weight.

Orca discovered the following property of polymer concrete and have been manufacturing polymer concrete pit since 2012.

  • High resistance to chemical and biological attack
  • Lightweight compared to cement concrete products
  • Excellent noise and vibration absorption
  • Excellent dielectric properties
  • Good weathering and UV resistance
  • Zero water absorption
  • Can be cut with masonry drills and grinders
  • Can be recycled as rubble or crushed for use as road foundation
  • Approximately 4 times the flexural strength of cement concrete
  • Good thermal properties and stability
  • Ultra-smooth finish which encourages efficient hydraulic flow
Contact us View Polymer Concrete Pit brochure
Stormwater drainage pit and junction pit

A pit that collects rainwater or excess water is called a stormwater or drainage pit.

Drainage pit is a rectangular box with a drainage grate in the ground that collect water and discharge the water trough drainage pip to the nearest council stormwater discharge point. Stormwater pit relies on gravity to collect water on site. Usually the site will have a fall e.g 1:100 to the pit. This method of drainage is called point drain.

Product detail

Product CodeInternal LengthInternal WidthOverall DepthClass load (AS3996: 2006)Weight
P33500100300mm300mm450mmD210*24 kgs
R33500105300mm300mm300mmD210*13.6 kgs
P45500200450mm450mm600mmD210*43 kgs
R45500205450mm450mm300mmD210*20 kgs
P66500300600mm600mm600mmD210*60.5 kgs
R66500305600mm600mm300mmD210*28 kgs

Pit grating and cover

Orca also offer standard grate, heel safe and anti-slip grate, concrete infill cover and access cover to suit Orca pit range.

Our grate and cover are design to meet the following standard:

  • AS3996:2006 Access covers and grates
  • AS4586:2013 Slip resistance classification of new pedestrian surfaces
  • AS1428.1 Design for access and mobility

Product detail

SeriesProduct CodeNamedescriptionsizeclass load weight
P33500120G30ALight duty galv grate to suit P33335x335x32A4.5
P33500130G30CMedium duty galv grate to suit P33335x335x32C5.7
P33GTG30CGTG30CMedium duty heelsafe anti slip galv grate to suit P33335x335x32C7.5
P33500160C30ALight duty checker plate galv to suit P33335x335x32A4
P33500165C30CMedium checker plate galv to suit P33335x335x32C5.7
P33FF33YAFF33YA300×300 c/o Medium duty galv infill cover and frame 335x335x80B12
P33FF33YDFF33YD300×300 c/o Heavy duty galv infill cover and frame335x335x80D20
P45500220G45ALight duty galv grate to suit P45485x485x50A12
P45500230G45CMedium duty galv grate to suit P45485x485x50C20
P45GTG45CGTG45CMedium duty galv heelsafe anti slip grate to suit P45485x485x50C26
P45500260C45ALight duty checker plate galv to suit P45485x485x50A10
P45500265C45CMedium checker plate galv to suit P45485x485x50C16
P45FF45YAFF45YA450×450 c/o medium duty galv infill cover and frame485x485x80B18
P45FF45YDFF45YD450×450 c/o Heavy duty galv infill cover and frame485x485x80D25
P66500320G60ALight duty galv grate to suit P66635x635x50A18
P66500325G60CMedium duty galv grate to suit P66635x635x50C40
P66GTG60CGTG60CMedium duty galv heelsafe anti slip grate to suit P66635x635x50C50
P66500360C60ALight duty checker plate galv to suit P66635x635x50A21
P66500365C60CMedium checker plate galv to suit P66635x635x50C28
P66FF66YAFF66YA600×600 c/o medium duty galv infill cover and frame635x635x80B27
P66FF66YDFF66YD600×600 c/o Heavy duty galv infill cover and frame635x635x80D39
P99G90LG90LLight duty galv grate to suit P99935x935x65A42
P99G90HG90HMedium duty galv grate to suit P99935x935x65C58
P99GHG90AGHG90ALight duty galv heelsafe anti slip grate to suit P66935x935x65A48

Find out more about our Orca Griptech Trench Grates and Frames

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