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SJB060685

Plumbers Arms member
Plumber
Messages
2,558
Hi guys.

As some of you here know I don’t do plumbing work, 99% of my knowledge lies within oil fired heating so forgive me if this is a stupid question.

I had to attend a commercial property today (close friends family run business). Complaint was wash basin wasn’t draining water away, easy enough, a blockage somewhere. There were no inspection ports for de-blocking etc etc on a 25m ish run and after making a couple cuts into waste pipe we found that the 40mm was severely blocked with grease and fat in several places. Anyway we’ve cleared what we can and had to redo some pipework as a couple swept tees had broken which we didn’t discover till half way through.

My question is this, as it’s a commercial property what are the minimum waste sizes required for removal of water? In a house you have your standard 32mm and 40mm, this 25m run was 40mm and picked up several other waste connections along the way before discharging outside. With the amount of crap we found inside these pipes it made me think that larger waste pipes would not only get rid of the water quicker but more importantly not block up so quick. There was also a unit inline which slowly administered an anti grease forming solution, however this is clearly having no affect.
 
Thanks Chris. I’ll report back to him. Sorry if my questions sounded stupid, I did do my NVQ 1-2 at college, so know a little, however my Monday to Friday was spent on my knees servicing and repairing oil fired appliances, that’s all we did lol.
Thanks again buddy!
 
Yes that’s what I’ll suggest. My concern is if he does do anything to it, he might just get the same person/firm back who installed it all in the first place, when clearly it’s not up to scratch. Either way I’ll advise him on what you guys have said and leave it with him, it’s on his head then if anything goes wrong.
 

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