Technical Statement
Product Description
Scope of use
Allproof's Polymer Concrete range is designed for the management of surface water catchment on medium to large areas. Once in the system waste water can then channeled into the storm water system via our matching range of Sumps and Pits.
Grate options cater for a wide variety of requirements, providing excellent solutions for everything from high foot traffic pedestrianised areas to heavy load resistant commercial applications (i.e. loading docks).
Allproof's base channel can be utilised in applications requiring varying load ratings by the use of differing grates from the range and concrete embedment.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause E1 Surface water: Performance E1.3.1, E1.3.2, E1.3.3, E1.3.3(a), E1.3.3(b), E1.3.3(c), E1.3.3(d), E1.3.3(e), E1.3.3(f)
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Allproof Polymer concrete channels are designed to be fully compliant with the requirements of New Zealand building code E1. However due to project specific variations it is recommended that a Hydraulics Engineer is engaged to aid in the selection of a system and ensure that it is adequate for your unique requirements and fit for the intended purpose.
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Use in Service History
Allproof Industries Polymer Concrete has been used to excellent effect on the following jobs:
- Takapuna Commons (Auckland)
- Ponsonby Central (Auckland)
- Auckland Institute of Technology
- Kings School (Auckland)
- Wellington Waterfront
Product Criteria
Design requirements
The system design accommodates runs of up to 43 meters, terminating at
a sump. A mirror image can then be run in the opposite direction, resulting
in maximum length of 86 meters between sumps. Overall system length is
unlimited. This may be reduced dependent on required capacities or other
constraints. We suggest engaging a Hydraulics Consultant with your exact
requirements.
On site mitre cuts are used to form corners, junctions
and irregular lengths.
Joints can be sealed with suitable flexible sealant if required.
Outlets are achieved by utilising pre marked knockouts.
Allproof supply a wide range of grates to meet durability and capacity requirements. These include stainless steel, galvanised steel, glass filled nylon and cast iron.
*Note Cast Iron Grates supplied painted black. Oxidisation can occur naturally, is aesthetic, and will not impact on grate performance. Repaint grates as part of maintenance if black finish desired.
End Caps & sumps available to complete the system.
Installation requirements
A minimum concrete surround is required to meet load capacity requirements, please see documentation available on our website allproof.com.
Channels are set to height on a bed of concrete to achieve required embedment and finished paving height.
We suggest that site concrete is used to haunch the channel into position and prevent movement during concrete placement.
It is important to support the channel from the weight
of the setting concrete by having either the original
grates, or appropriate bracing in place.
Protect grates from concrete contamination during
installation by wrapping in plastic or masking tape.
Alternatively, timber infills to match grate width can be installed during concrete pour to maintain channel design width.
Chemicals used during installation and finishing may react with a galvanised edge and/or grates, please ensure this has been catered for or a stainless steel finish may be required.
Maintenance requirements
Please see http://www.allproof.com.au/maintenance for all maintenance advice.
All grates are removable and regular cleaning and removal of debris is advised to maintain the channel function.
Sumps require regular cleaning as per E1 stipulation.
Warrantees
Our Polymer concrete channels have a 25 year warranty, as long as they are installed correctly and used to their designed purpose their life expectance will greatly exceed this.
Please visit http://www.allproof.co.nz/product-warranty to see all our warranty information.
Environmental
Consider the environmental effect upon the product when making your grate selection. i.e. chemical and physical weathering
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Date last validated:
11 November 2026 |
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Date last updated:
11 November 2026 |