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Question: i am building an addition on to our house in NJ. I have applied for all the permits, and have been told that they are all ok, except for the plumbing. They asked that i supply "a proper sanitary and vent riser diagram". What should each of these diagrams contain. Going into the addition, is a new master bath (toilet, dual sink, seperate shower, and whirlpool tub), a laundry room (washer and a sink), and two outdoor hose bibs. Should this diagram, include each of the connections to these pieces of hardware? Do i need to show the connection sizes and the types? Does the diagram need to show both floors in one diagram? also how many fixtures can be on one roof vent?
Answer: I'm sure what they want is pipe sizes and location. There want . waste pipe, vent, water supply? (hot and cold) Just general diagram of the plumbing. Should have drawing of first and second floor. I don't think they care about connection type. They want to make sure your not overloading the existing system. Basically you want to draw a line ( from point A to B)on your blueprint like 3" waste show the point of connection and pipe size it's connecting to, path it follows. Look for blueprint with the plumbing to get an idea. You might find out you have to change some of the existing system to ( larger pipe size ) to meet new loads
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