I've going to build two separate waste runs that meet and go into one 50mm pipe before hitting the SVP. I'm going to run:
1. Shower waste (40mm) into 50mm then later connect a 32mm sink waste into this then to join 2. below in 50mm pipe
2. Sink waste (32mm) then this will go into a 50mm pipe and will then take the 40mm bath waste then join with 1. above in 50mm pipe.
It needs to be part H compliant and pass building control. Will it be sufficient to fit Antivac bottle traps to each sink and have the SVP venting externally through the roof?
Also, can I connect 4 items into one 50mm pipe?
1. Shower waste (40mm) into 50mm then later connect a 32mm sink waste into this then to join 2. below in 50mm pipe
2. Sink waste (32mm) then this will go into a 50mm pipe and will then take the 40mm bath waste then join with 1. above in 50mm pipe.
It needs to be part H compliant and pass building control. Will it be sufficient to fit Antivac bottle traps to each sink and have the SVP venting externally through the roof?
Also, can I connect 4 items into one 50mm pipe?