Toilet drain plumbing connects directly to the main sewer pipe.
The drain for a toilet goes straight down from the toilet flange, makes a 90 degree bend and connects to the main sewer stack, a vertical pipe that extends out through the roof. The main sewer stack collects liquid and solid wastes and also acts as a vent for the home's drain and waste pipes. Older homes have a main stack made of cast iron, but newer homes use PVC or ABS plastic pipe. A T-fitting makes the drain to stack connection. Does this Spark an idea?
Instructions
1. Fit the closet bend over the bottom end of the toilet flange fitting and point it in the general direction of the main sewer stack pipe. Measure from the inside of the closet bend hub to the main stack and cut a piece of PVC pipe to this length with the saw. The pipe length will need trimming later.
2. Fit the pipe into the closet bend hub until it reaches the bottom of the hub. Attach the T-fitting on the other end of the pipe and position it so it rests alongside the main sewer stack pipe.
3. Place the level on the pipe and adjust the T-fitting end of the pipe up or down to achieve a downward slope of 1/4 inch per foot of pipe. If the pipe travels 4 feet horizontally, the pipe should slope 1 inch towards the main sewer stack. Keep the T-fitting next to the sewer stack pipe.
4. Measure the depth of the hub portion of the T-fitting on the ends that will fit over the main sewer stack. Mark the main stack for cutting with the marker at the hub depths measured from the ends of the Tee fitting. The stack pipe must fit into the hubs and without raising the upper part of the pipe above its current location. Remove the horizontal pipe and Tee.
5. Place two lengths of 2-by-4 on either side of the stack pipe in the attic across the joists. Wrap the nylon tie down strap around the pipe five or six times and then around both 2-by-4s. Connect the two hooks and tighten the strap with the ratchet. This supports the pipe while you cut it.
6. Cut the pipe across the marks. Keep the cut square and not on an angle. Remove the cut-out piece and fit the Tee fitting onto the ends of the pipe. You will have to lift the stack pipe about an inch to get fitting in place, but let it seat inside the hub once the fitting is in place.
7. Place the pipe back in the closet bend and position it along side the horizontal hub on the T-fitting. Mark the pipe at the hub depth and trim it to length. Test fit the closet bend to the pipe and the T-fitting before proceeding to ensure the T on the main pipe is in the correct position. Use the marker to make alignment marks on the T-fitting and on main sewer pipe to make alignment easy while cementing the pipe. Make similar marks on the closet bend.
8. Lift the main pipe up just enough to remove the T. Open the primer and use the supplied dauber to prime both ends of the main pipe and the inside of all three T hubs. Dip the dauber once for each pipe end and each fitting hub. Give the primer 30 to 60 seconds to dry.
9. Open the cement and use the supplied cement dauber to put the cement on the pipe ends and on the two hubs that will fit over the main pipe. Dip the dauber once for each hub and pipe end, or more if necessary. Immediately put the T back on the main pipe and turn the Tee about 1/4 turn to evenly spread the cement and line up the marks.
10. Prime and cement the pipe to the Tee fitting hub. Repeat for the closet bend and the toilet flange fittings. Primer and cement the pipe to the closet bend to complete the installation.
Tags: closet bend, main sewer, sewer stack, main sewer stack, stack pipe
