B.Â
The locations of services as shown on the drawings are
approximate locations. Exact locations will be established in the field by
the Water Superintendent and/or his representative during construction.
C.Â
The new water services shall include corporation stop
at main, copper service pipe to the property line and a curb stop with box
set at the property line. Service pipe beyond the property line is the responsibility
of the homeowner to be installed by others.
Six sets of manufacturer's literature of the materials of this article
shall be submitted to the engineer for review and approval.
A.Â
Copper tubing. Piping for buried water services shall
be continuous Type K annealed seamless copper water tubing with compression
connection joints conforming to ASTM B88 Standard Specifications for Seamless
Copper Water Tube or United States Federal Specification WWT-799C for Tube,
Copper, Seamless.
B.Â
Corporation stops. Corporation stops shall be of brass
and shall be the approved equal of Mueller Co., Decatur, Illinois, Mark II
Oriseal or Cambidge Brass by Hays Corporation. The inlet shall have Mueller
threads and the outlet shall have compression connection.
C.Â
Curb stops and boxes.
(1)Â
Curb stops shall be of brass, and shall be the approved
equal of Mueller Co., Decatur, Illinois, Mark II Orisea or Cambridge Brass
by Hays Corporation. The inlet and outlet shall have compression connections.
Corporations shall be ball type and rated to a working pressure of 300 pounds
per square inch (psi).
[Amended 10-24-2006]
(2)Â
Each curb stop shall be provided with a cast-iron box.
The valve box shall be Mueller Co., Decatur, Illinois, or approved equal.
Curb stops shall be ball type and rated to a working pressure of 300 psi.
[Amended 10-24-2006]
(3)Â
The cast-iron box shall be the extension type with arch
pattern. Inside diameter of upper section shall be at least 1Â 1/2 inches
for three-fourths-inch and one-inch curb stops and shall be at least two inches
for one-and-one-half-inch and two-inch curb stops. Cast-iron boxes shall be
manufactured in the United States, Canada or approved equal.
A.Â
The tapping machine shall be rigidly fastened to the
pipe halfway between the horizontal and vertical position. The length of travel
of the tap should be so established that when the stop is inserted and tightened
with a fourteen-inch wrench, not more than one to three threads will be exposed
on the outside. When a wet tapping machine is used, the corporation stop shall
be inserted with the machine while it is still in place. Stops shall be tightened
only sufficiently to give water tightness, and care must be constantly exercised
not to overtighten them.
C.Â
Care shall be exercised in the placing and laying of
tubing to be sure that the pipe does not have kinks or sharp stones or ledge
which would cause damage to the pipe. At least six inches of sand shall be
placed as shown on the drawings,[2] adjacent to, above and below the tubing. No stone shall be dropped
on the tubing until the depth of backfill above the tubing is in excess of
one foot.
[2]
Editor's Note: The drawings are located at the end of this chapter.
D.Â
Connections of new services shall be made with existing
services unless otherwise directed by the Water Superintendent and/or his
representative. Bushings and/or couplings shall be used as required to connect
new tubing with existing services.
E.Â
Buried curb stops and boxes shall be set plumb and centered
with the box located directly over the stop. The box shall be set on a concrete
block or flat stone. Earth fill shall be carefully tamped around the boxes
to a distance of four feet on all sides of the box or to the undisturbed face
of the trench, if less than four feet.
G.Â
Service connections shall be tested and disinfected in
accordance with AWWA standards.