Only one thought. You need an engineer to do the calculations to see
exactly what you need. IMO, you have plenty of capacity to supply another
three houses too. Be sure you have the right pump setup. It is far cheaper
to pay an engineer a few hundred bucks now rather than have to re-do a
faulty system a few months from now.
In this particular application there is no pressure tank. The well pump fills a
1500 gallon storage tank and is controlled by a float valve. A booster pump
draws water from the storage tank and supplies water directly to the houses.
It would be hard to imagine the houses drawing more than 30gpm combined at any
one time and that number seems well within the capacity of a boost pump.
"Tell me what I should do, Annie."
"Stay. Here. Forever." - Life On Mars
My hose faucet running full blast puts out about 15 gal/minute.
No pressure tank? Does the pump run full time?
Connecting the 2 pipes together before splitting to go 3 ways would
help assure that noone gets short-changed on water.
If there is a problem, increasing the pump pressure should solve it.
(Bigger pump) I wouldn't expect it. Without watering usage, high
demands should be short lived. A pressure tank at your house could
There must be some kind of reservoir to maintain pipe pressure until
water demand occurs. Or does the pump run continously if a faucet is
That should almost never be necessary. This is of course dependent on
the "booster pump" at the source being strong enough. You could put a
booster pump at your end with a pressure switch to turn on only when
the supply pressure gets too low. The storage tank at your end
(storage? not pressure, right?) will mean you have to supply all the
electricity to pressurize your water - another expense.
You could increase the pipe size from the road to the houses, cutting
losses through the pipes, effectively making them "appear" shorter to
the pump, increasing the capacity of the system.
The fire sprinklers are probably the determining factor.
About 20 years ago my father ran a 2 inch water line from city water
about 1.5 miles to their subdivision. Their house and 5 others are
served by it. Water pressure and flow can be a little slow at peak
times, however they have never had a problem. A 2 inch line carries a
lot of water. I would be more concerned with the 1.5 inch line and
1) Rather than a 2" and a 1-1/2" line, why didn't "someone" just pull the
2" and run a 3" or as large as you can get under the road? When you have
two different sized pipes in "parallel" the small pipe usually doesn't make
much difference. You could bring TWO 2" pipes to the conduit, transition to
ONE 3" (plus) and at the other side have separate 2" pipes to the individual
2) As another poster said, in any case a 2" pipe can carry a heck of a lot
3) I don't quite understand your system but if possible you should have a
pressure tank near the wellhead and the pressure should be set on the high
side (cut in 50, cut out 70). If you have pressure regulators at each home
set at, say, 30 psi you will never "sense" when your neighbors are using
On Wed, 20 Jun 2007 13:44:56 -0700, someone wrote:
How do the Owners know this? A 2" water supply line is pretty big if
not being used for fire hydrants or irrigation. I have seen camp
colonies that ran far more than only three houses off 2" water lines.
If everyone wants to stick to their guns, if there were documents
(plans, specs) that said there were supposed to be three separate
lines and a fixed price to do it, then tough shit on the contractor,
they can cut the road lay the lines then patch the road.
But if you are all paying time & materials anyway, then try it as-is
and see. I don't see that it is so obvious that a 2" line can't do
it. What does an actual engineer's analysis say?
Reply to NG only - this e.mail address goes to a kill file.
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