- April 1st, 2020, 10:46 pm
#7662
Hi, wondering if anyone can help me out.. We recently bought a 50s bungalow and its become apparent that the drains are in need of urgent work. As its an old property, there is a single system for foul and surface water. I have attached a diagram which shows manholes and drain sections.
Alterations were made to the property in 2004 when it was converted into a chalet bungalow. During this work, a SVP was installed and routed into FWMH1 (S5). The HUGE problem is it enters FWMH1 against the flow(!!!) so without going into too much detail, ‘bits’ are deposited into the other drains entering FWMH1, where they stay because the surface water running down those drains does not have enough flow to pick up the bits and take them down the main drain… I can’t believe this was signed off by building control! or that the previous owners put up with it!
I have to dig up S6 and S7 between FWMH1 and FWMH2 (highlighted red in the attached) which is going to be replaced with a new 110mm PVC pipe. My first thought was to also dig up around the SVP, and reroute it into the redundant S4, which enters FWMH1 at the correct angle, but thinking more about it, FWMH1 was only ever dealing with surface water from its original install in the 50s, and has a 10cm fall over 6m to FWMH2.
So looking for advice, is rerouting into redundant S4 a good idea? (Highlighted orange in the attached) Would running a new PVC pipe further downstream towards FWMH2 make a lot more sense? (highlighted green in the attached) - I may need to install a new IC for this connection? Any thoughts/advice much appreciated!
KP.
Alterations were made to the property in 2004 when it was converted into a chalet bungalow. During this work, a SVP was installed and routed into FWMH1 (S5). The HUGE problem is it enters FWMH1 against the flow(!!!) so without going into too much detail, ‘bits’ are deposited into the other drains entering FWMH1, where they stay because the surface water running down those drains does not have enough flow to pick up the bits and take them down the main drain… I can’t believe this was signed off by building control! or that the previous owners put up with it!
I have to dig up S6 and S7 between FWMH1 and FWMH2 (highlighted red in the attached) which is going to be replaced with a new 110mm PVC pipe. My first thought was to also dig up around the SVP, and reroute it into the redundant S4, which enters FWMH1 at the correct angle, but thinking more about it, FWMH1 was only ever dealing with surface water from its original install in the 50s, and has a 10cm fall over 6m to FWMH2.
So looking for advice, is rerouting into redundant S4 a good idea? (Highlighted orange in the attached) Would running a new PVC pipe further downstream towards FWMH2 make a lot more sense? (highlighted green in the attached) - I may need to install a new IC for this connection? Any thoughts/advice much appreciated!
KP.
Attachments
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