Hi,
I need to add 2 inspection chambers to my drains because of new connections. One is a new stack which I will probably run at 45 deg to existing drain for better flow and so I don't have 2 manholes almost next to each other. The other is an outlet from a downstairs bath room that turns 90 deg before in run to existing manhole (so I need manhole at the 90 deg). Invert depth is around 500mm.
I need to decide whether to go for the more expensive 450mm or use the 300mm but I wonder how easy it is to get rods into a 300mm.
Opinions?
BTW I assume nobody would suggest using old style concrete manholes for new manholes?
I need to add 2 inspection chambers to my drains because of new connections. One is a new stack which I will probably run at 45 deg to existing drain for better flow and so I don't have 2 manholes almost next to each other. The other is an outlet from a downstairs bath room that turns 90 deg before in run to existing manhole (so I need manhole at the 90 deg). Invert depth is around 500mm.
I need to decide whether to go for the more expensive 450mm or use the 300mm but I wonder how easy it is to get rods into a 300mm.
Opinions?
BTW I assume nobody would suggest using old style concrete manholes for new manholes?
Last edited: