Running Pipe Through Floor Joists San Diego Code

Run 3 4 inch pipe to a hose bib or a water heater.

Running pipe through floor joists san diego code.

The national electrical code which is the basis for all local building codes has specific regulations for installing electrical wires so that they are protected from damage. Where the toilet is now will be the sink and vanity. As a general rule you can run 1 2 inch pipe to most fixtures. Ken may 10 17 at 2 23.

Piping run concealed in finished spaces has to be installed through the joists and protected from physical damage. Step 3 understand the joist slopes. The holes will have to follow a straight line that goes across the floor and has to either go up or go down so the pipe has a slope. The holes must follow a straight line across the floor and must ascend or descend so the pipe will be sloped 1 4 inch per foot.

Or be run in black or galvanized steel. Or find a better way to run that pipe at 2 diameter that seems to be a venting pipe. At this time the joists are not exposed so i am going on the assumption that they are 2 10 s. The slope should be about 1 4 for each foot of pipe.

You are going to need to add joists to accommodate the load of the second floor. Notches can t be deeper than one sixth of the joist depth. Running drainpipes through floor joists is more complicated than running them parallel to the joists. Code quotes are from the 2012 irc.

Of solid wood between the top and bottom edges of the joist and the edges of any hole. Section g2415 404 piping system installation. Area in the middle of the 2 10. You also have to leave at least 2 in.

Running drainpipe through joists calls for meticulous work. If joists are 16 inches on center and pipes run across them at a right angle holes should differ in height by about 3 8 inch. Different fixtures place different demands on supply pipes. When you run your pipes through a joist you will have to be careful with your work.

Each fixture has a demand rating based on fixture units see chart. In the case of your 2 10 joists the maximum diameter is 35 64 in. A favorite target of electrical inspectors is the improper use of non metallic cable nm in exposed locations such as basement foundation walls or along the face of studs and joists in unfinished framed spaces. One contractor says he will run the pipe to the waste through the joists.

Step 4 cut the holes. A plumber says never cut through the joists and a new waste pipe will need to be installed. Also a flexible appliance connector has a length limit of 6 feet. Or you could box the pipe run and shield it.

Each joist must have a separate notch or hole and each hole should be about 1 4 inch larger.