Inspection Chambers Products
Inspection Chambers, sometimes referred to as manholes, are available with 110mm and 160mm connections. Shallow Inspection Chambers have 110mm connections and are used where the depth will not exceed 600mm.
Access chamber, Inspection Chambers and Manholes
Access chambers (often called shallow access chambers) are intended to provide simple access for cursory inspection and access for drain rods or other maintenance equipment. They are not intended to provide access for a maintenance operative and are generally not more than 600mm deep.
Inspection chambers (often abbreviated to IC and also wrongly called Manholes) are larger than access chambers, typically a minimum 450mm diameter. Again, they provide access for maintenance equipment, but tend to have more branches/spurs feeding into them and are often up to 1000mm deep. They can be up to 3m deep but after 1.2m they need to have their access at the top restricted. This can be done by using a restriced acces fitting for your manhole cover.
Manholes (MH) are the largest chambers providing access to a sewer or drain for maintenance equipment, and, in some cases, for operatives to enter the system itself. The minimum internal dimensions of a manhole are 600x900mm and they can be of any depth, although most modern manholes tend to be at least 1 metre deep with inspection chambers and access chambers used for shallower depths.
