Description
The 280mm corner chamber base 90° is a shallow access chamber base for compatible 110mm underground drainage systems. It is used where the main drainage channel needs to change direction through a 90° corner while still providing access for inspection, rodding and maintenance.
This Brett Martin chamber base is part of the 280mm shallow access chamber range. It is suitable for smaller domestic drainage layouts, extensions, garden drainage, outbuildings, repairs and light-duty site drainage work.
The 90° corner channel helps create a controlled change of direction inside the chamber. This makes it useful where pipework needs to turn while keeping a compact access point in the drainage system.
280mm Corner Chamber Base for 110mm Drainage
The 280mm corner chamber base is designed for compatible 110mm underground drainage pipework. It helps create an inspection point where a pipe run changes direction.
The compact 280mm chamber size is useful where a shallow access chamber is suitable for the drainage layout. Brett Martin states the 280mm and 315mm shallow access chambers are suitable for inverts up to 600mm.
- 280mm corner chamber base
- 90° change of direction chamber base
- Designed for 110mm underground drainage pipework
- 205mm invert depth
- Brett Martin B2803 product reference
- Compatible with Brett Martin 280mm shallow access chamber components
- Suitable for inspection, rodding and maintenance access
- Useful for domestic drainage, extensions and light-duty site drainage work
280mm Corner Chamber Base 90° Layout
This 280mm corner chamber base has a 90° main channel, allowing compatible 110mm drainage pipework to change direction through the chamber.
Before installation, check the pipe route, flow direction, invert level and chamber position. The chamber should sit level and should remain accessible after the drainage work is complete.
Use compatible 110mm underground drainage pipe and fittings. If risers or covers are required, match them with the correct Brett Martin 280mm shallow access chamber components.
280mm Corner Chamber Base Installation Use
The 280mm corner chamber base should be installed as part of a properly planned underground drainage system. It can be used where access is needed near a change of direction.
Correct bedding, support and backfill help keep the chamber stable. The chamber should sit level, and any riser or cover should suit the finished ground level.
Always confirm the loading requirement, cover type and final chamber depth before installation. The chamber must remain accessible for future inspection and maintenance.
Shallow Access Chamber for Site Drainage
This chamber base is useful for builders, groundworkers, landscapers and drainage installers working on smaller underground drainage systems. It can be used on new installations, drainage repairs, extensions and outbuilding drainage work.
For best results, use compatible 280mm chamber risers and a suitable cover and frame. Brett Martin risers for this chamber range add 185mm to the chamber assembly.
This product is a chamber base only. It should be used with the correct riser and cover where required by the installation.
Compatible 280mm Manhole Chamber Products
This 280mm corner chamber base is part of the wider TWS 280mm manhole inspection chamber range. You can match it with compatible risers, sealed covers, 110mm drainage pipe and underground drainage fittings.
View 280mm manhole inspection chambers at TWS.
View 110mm manhole inspection chambers at TWS.
View all manhole bases and inspection chambers at TWS.
Shop all underground drainage at TWS.
For official manufacturer information, see the Brett Martin access and inspection chambers information.
