Unite manhole covers
Using the very latest tools and software, the Unite range of manhole covers have been engineered for an extremely long life which in some instances has exceeded 20 years.
Key to Unite’s longevity is minimising seat wear between covers and frames. The range has the stiffest cover structure in its class and on top of this, seating which is less vulnerable to any movement caused by covers flexing.
> 1,500 Annual Average Daily Traffic (AADT)?
With the introduction of CD 534 there were several key changes. This includes the requirement for E600 manhole covers to be installed in place of D400 covers where the Annual Average Daily Traffic (AADT) of light goods vehicles travelled on a road is greater than 1,500 in each direction.
As a "rule of thumb", most A roads will have an annual average daily traffic number over 1,500 light goods vehicles. Full traffic data can be found for many locations around the UK on the Government website.
Find the right range for you
Our manhole cover comparison tool gives you a detailed overview of which features, options and accessories are available for each product range.
The tool provides information on our three primary iron ranges; Tristar, Highway and Unite, making it easy to find the best solution for your project.