dont laugh !! now with pic

[mikric]

Went to visit a self builder today who is doing most of the work himself. He had just connected his SVP to his drains and was most proud of this. Unfortunately he thought it was a good idea to put a trap at the bottom Good job it was spotted as if it were covered would probably not found out about it till the solids started to back up

 

[plugwash]

So what exactly is a SVP and where exactly was he putting the trap?

 

[mikric]

Soil and vent pipe and he put a trap at the bottom of it.

 

[Steve]

LOL

 

[wotan]

Soil and vent pipe and he put a trap at the bottom of it.

What's a trap?

 

[marshman]

a u-bend that retains water to stop the smell coming back from the drains.

 

[wotan]

a u-bend that retains water to stop the smell coming back from the drains.

Never!

Wotan

 

[xerxes]

Ah! So the trap goes at the top of the soil vent pipe.

 

[wotan]

Ah! So the trap goes at the top of the soil vent pipe.

My impression is there should only be one trap, the 'u' bend of the toilet bowl? from there, the waste goes directly into the foul drain, which is vented to atmosphere, and then because of the fall of the drains waste products flow towards the main sewer?
Or am I talking out of my arris?

Wotan

 

[Steve]

U bend in toilet, and under all "appliances" connected to the stack, so that foul smells cant get into the house.

Stack freeflows into the sewer or drain, normally via a manhole (inspection chamber). From there it falls by gravity to a pumping station.

 

[Dockey]

Invented by the Von Trapp family of 'The Sound Of Music' fame!

 

[mikric]

have put a pic of it on if anyone is still confused .

 

[wotan]

have put a pic of it on if anyone is still confused .

You fink we'r fick?

Wotan

 

[John506]

What a nightmare if it was fully concreted over

 

[JonB]

Whilst I appreciate the stupidity of the picture.
Our semi built c1940 the last manhole before going to the main sewer has a stupid little trap (looks about 3inch dia.) which is very easy to block up, it sometimes gets encrusted with a white hardish soap residue which in effect reduces the diameter.
JonB