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Internal Manhole Cover Issues help!!!
GJKenny
Posts: 1 Newbie
Q.1
Hi I have an internal manhole with an old cast iron cover that needs replacing as its not double sealed and doesn't meet regulatory standard. The existing frame clear opening measures at 760x610x3mm and doesn't line up exactly with the brick work opening all the way round, there is enough access to the chamber though . Does this matter because I want to order the new frame but the closest match in size is 750x600x58mm and I know this won't line up either as it's a tad smaller, so does the frame and the brick clear opening need to line up exactly to meet regulations or is it OK for the new cover to sit as the old one does? the next cover sizes are too big or small!
Q.2
I can't see waste water or any flow at all in the chamber, there is this weird pad of mold sitting just below the 2nd layer of brick from the top of the clear opening. I dropped a crowbar on it by mistake and it just laid on it, so it's pretty solid. Also there are no noticeable blockages and there is another access point 3m away which my waste flows to after mine, when flushing my toilet the flow can be seen as normal here. I haven't disturbed it yet to find out but I think someone has put some kind of sealant just at the top and mold has grown on it. Can anyone tell me what this thick moldy pad/cover is, should I leave or get rid of it and if it poses any danger in any way?
Thanks
Hi I have an internal manhole with an old cast iron cover that needs replacing as its not double sealed and doesn't meet regulatory standard. The existing frame clear opening measures at 760x610x3mm and doesn't line up exactly with the brick work opening all the way round, there is enough access to the chamber though . Does this matter because I want to order the new frame but the closest match in size is 750x600x58mm and I know this won't line up either as it's a tad smaller, so does the frame and the brick clear opening need to line up exactly to meet regulations or is it OK for the new cover to sit as the old one does? the next cover sizes are too big or small!
Q.2
I can't see waste water or any flow at all in the chamber, there is this weird pad of mold sitting just below the 2nd layer of brick from the top of the clear opening. I dropped a crowbar on it by mistake and it just laid on it, so it's pretty solid. Also there are no noticeable blockages and there is another access point 3m away which my waste flows to after mine, when flushing my toilet the flow can be seen as normal here. I haven't disturbed it yet to find out but I think someone has put some kind of sealant just at the top and mold has grown on it. Can anyone tell me what this thick moldy pad/cover is, should I leave or get rid of it and if it poses any danger in any way?
Thanks
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