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Tiger Diver,
Just a heads up. If you plan on using 2" PVC pipe for a sleeve, it won't fit through a 2-1/4" hole. The outside diameter is 2-3/8"

Have you checked the voltage at the clock terminals? If you have a 120 V clock, the neutral wire may have problems before it gets to the timer.

Look at UBC 2320.8.4, IRC R502.10, or IBC 2308.8.3. All have similar language. The IRC seems the most conservative by specifically saying a single header. See R502.10 on this link...

If it is ABS drain pipe, it probably has a foam core. I never tried bending it. But, I suspect that the foam core could cause problems when bending.

I agree with Bob. Here are some more sources for information on additives.
http://www.epa.gov/ORD/NRMRL/pubs/625r00008/fs1.pdf
http://waterquality.cce.cornell.edu/septic.htm#chemicals

I would go to a real plumbing supply and get red brass nipples.

It looks like California is considering a more widespread use of PEX. Here is link to a notice that says they are going to prepare an Eniviromental Impact Report for the use of PEX....

Lee,
Some time when you are in an experimenting mood try this. Put a dab of primer on some PVC and a dab of acetone on a differnt spot. Wait a little bit but before the primer drys, scrape both...

I never said that I liked the pipe attached to the subfloor. I would never do it because I have seen too many subfloors that have had another layer addded with long nails. I wished I was wearing a...

Construct30
The codes (both UPC & IPC) are concerned with pipe passing through framing members. Subflooring is not a framing memeber. The orignial picture doesn't show the pipe passing through the...

The logic doesn't work. The relationship between flowrate and pressure loss is not linear. I do not know what process is used to develop the tables in the code. Two common ways of estimating pressure...

leejosepho,
I don't understand how you can make any of those assumptions. The current edition of the Steel Construction Manual doesn't list a W8x8.5 the lightest W8 is 10 lbs and it is only 4 inches...

Most building codes require a steel strap over notches in top plates. So you could not install the box and still have it accessible with the strap. Here is a link to a strap that commonly covers...

Why don't you call the manufactures of the equipment? They should be able to steer you in the right direction.

By the way, it is Nationally Recognized Testing Laboratories. UL, FM, CSA, and NSF...

Start at the gas cock where the gas pipe comes out of the floor. Work your way toward the heater. Those old valves are prone to leaking.

Perrycat,
This link may interest you. http://www.deabath.com/Original/SW_page/sw_page.htm

With globe valves, the open area in the valve is proportional to the number of turns the valve is opened. Each turn of the valve increases the valve opening the same amount. Knowing the open area is...

Inquirying minds have to know. Why would some knucklehead mess around with the ignitor on a new stove? They must be really lucky if electricity burned through a gas line without it igniting.
...

Bassman,
It sounds like you have a good repoir with the city. They should be able to give you good information on blocking and nailing the plywood. Here is a link to some information you might find...

1-1/2" ABS and PVC pipe has a 1.9" outside diameter. Even with a 2" hole, he won't have much wiggle room. I'd think about 2-1/8" holes.

Oh no. I really feel sorry for you. I have battled those nasty trees in my yard. The roots send up sprouts all over the place. I have spent hours digging up roots but the suckers keep on coming up....

Typically 2 hrs. It depends on ambient temperature, pipe size and water pressure.
http://www.oatey.com/apps/catalog/instance_assets/assets/Submittal_Sheet/PVC%20Heavy%20Duty%20Gray.pdf

At 145 lbs/ft³, 2 tons may not be an exageration.

Moray,
In the picture, it looks like the compression nut has been tightened as far as it can go. This is not good. For $500, the least they should have done was replace the sleeve/ferrule (or it is...

Does this help? http://www.metelec.com/techdata/NECtable3C.html