The plans and specifications for water line construction must
be prepared by a registered professional engineer who has experience
with water utilities construction in accordance with AWWA standards
and the standards generally used by municipal water departments.
(1998 Code, sec. 51.25)
The above plan must be submitted to the water commissioner of
the town, and he must approve same by issuing a permit for construction
before any construction may begin.
(1998 Code, sec. 51.26)
Before the start of any construction, the property owner must
furnish to the town a copy of his contract or agreement with the contractor
who is to construct and install the water transmission mains, valves,
and associated equipment.
(1998 Code, sec. 51.27)
The following provisions and specifications are approved specifications
and provisions for the construction of water lines in the town:
(1)
All water line mains less than six inches in diameter shall be constructed
of 160 polyvinyl chloride pipe with rubber gasket joints.
(2)
All water line mains six inches or larger will be C900 polyvinyl
chloride, hereinafter referred to as PVC.
(3)
All water line pipe shall be imbedded with free-running fill sand
with a minimum depth of four inches under the pipe and four inches
above the pipe.
(4)
All pipe shall have a minimum backfill cover as follows:
|
Pipe Diameter
|
Inches of Backfill Cover
|
|---|---|
|
Less than six inches
|
30
|
|
Six inches
|
36
|
|
Eight inches
|
42
|
|
Greater than eight inches
|
48
|
(5)
All water lines shall have a 150 psi hydrostatic test for a four-hour
period and said test must be witnessed by a member of the town water
department.
(6)
All water line mains must be chlorinated by the contractor and water
samples then must be taken and sent to a laboratory properly qualified
to certify that the water passing through the aforementioned water
line is adequate for human consumption. This certification, when received,
must be filed with the town secretary.
(7)
All lots in a subdivision within the jurisdiction of the town shall
have water services installed by the developer of the subdivision
concurrent with the installation of new water lines. Such services
to be provided by the developer shall include tapping of the water
main, running of supply line to a meter box, setting of a metal meter
box of a type and size approved by the town and connection of a curb
stop cutoff valve of a lockable type. At time of installation, an
employee or agent of the town shall approve all materials supplied
and all installation services performed.
(8)
A one-inch water meter shall be the maximum size water meter installed
for water usage on residential property, except a two-inch water meter
shall be allowed for sprinkler systems.
(9)
All connections to the existing water line system shall be made by
the town water department. The cost of labor and material necessary
for connecting to this system shall be borne by the property owner.
(10)
All water line valves, main line taps, fittings, and fire hydrants
shall be placed in a concrete saddle and thrush blocks.
(11)
All valve boxes shall be adjustable cast iron type and shall be placed
on a concrete base.
(12)
All water service shall be marked with blue plastic tape.
(13)
All standard specifications for construction of any water line system
as defined above shall be according to the specifications as set out
in this Code of Ordinances and made a part of this article for all
purposes.
(14)
All water lines shall be constructed within the right-of-way easement
of the state, the county or any political subdivision, or easement
dedicated to the town. All water meters shall be installed within
two feet of any one of the previously described right-of-way easements.
(15)
Each residential dwelling shall be connected to a minimum of one
water meter and one service line. It shall be prohibited for any two
residential dwellings to be connected to the same water meter and
service line unless approved by the director of public works or the
town engineer. The minimum service line size shall be a continuous
one-inch type K copper line with no unions allowed between the meter
and water main. A reducer at the water meter may be installed for
a 5/8-inch or 3/4-inch water meter. A minimum two-inch PVC schedule
40 sleeve shall be required on all service lines crossing under public
or private streets, to be extended one inch beyond the edge of pavement
with a minimum of three feet of cover.
(1998 Code, sec. 51.28)
All exterior sprinkler systems installed in the town must comply
with the following requirements:
(1)
No person, partnership, or corporation may install an exterior sprinkler
system within the town without first obtaining a permit from the town.
(2)
Before the town may issue a permit for the installation of an exterior
sprinkler system, the owner of the property on which the system is
to be installed shall file with the director of public works the following:
(A)
A plan of the system demonstrating the general layout of the system
on the subject property; and
(B)
An affirmative statement by the owner of an exterior sprinkler system
that, if any part of the system be constructed in any easement or
right-of-way dedicated to the public, the owner acknowledges that
[neither] the town nor any of its agents, contractors, or employees
shall be liable for or obligated to repair or replace any part of
the system within such easements or rights-of-way that may be damaged
or destroyed.
(3)
Each exterior sprinkler system must be equipped with a backflow preventer
of the type approved by the department of state health services and/or
the director of public works.
(1998 Code, sec. 51.29)
(a)
Adequacy of system.
Water systems shall be constructed
of sufficient size to furnish adequate domestic water, and to furnish
fire protection to all lots, and shall conform with the town’s
comprehensive plan and meet the requirements, in all respects, of
the department of state health services. The town shall make the final
determination of the adequacy of water mains proposed.
(b)
Materials.
(1)
Mains.
(A)
All water mains 12 inches in diameter and smaller may be either ductile
iron pipe, thickness class 50 minimum, or AWWA C900 polyvinyl chloride
(PVC) pipe. Water mains larger than 12 inches in diameter may be constructed
with either pretensioned or prestressed concrete steel cylinder pipe
or ductile iron pipe.
(B)
The contractor or subdivider shall comply with all applicable requirements
of division 2, item 2.12, sections 2.12.5, 2.12.8, and 2.12.20, of
Standard Specifications for Public Works Construction, 1995 edition,
published by the North Central Texas Council of Governments.
(2)
Gate valves.
Gate valves shall be furnished in accordance
with the applicable requirements of division 2, item 2.13, section
2.13.1, of Standard Specifications for Public Works Construction,
1995 edition, published by the North Central Texas Council of Governments.
(3)
Fire hydrants.
(A)
Fire hydrants shall be furnished in accordance with the division
2, item 2.14, of Standard Specifications for Public Works Construction,
1995 edition, published by the North Central Texas Council of Governments.
(B)
The subdivider shall furnish drawings with complete detailed dimensions
of the fire hydrant proposed for the subdivision.
(c)
Installation and testing.
(1)
Water mains, fittings, gate valves, and fire hydrants.
(A)
The subdivider shall comply with all applicable standard specifications in subsection (b) of this section for installing materials that comply with the standards of the town.
(B)
Prior to approval of plans and specifications for ductile iron pipe,
the subdivider shall perform a soil survey to establish the corrosive
characteristics of the soil at and along the alignment of the proposed
water mains. If the corrosive characteristics of the soil are found
to be excessive or indicate a potential for a corrosive condition,
then an approved polyethylene encasement or wrapping shall be installed
to protect the pipe in accordance with division 2, item 2.9, section
2.9.5, of Standard Specifications for Public Works Construction, 1995
edition, published by the North Central Texas Council of Governments.
(C)
Tap installations on PVC pipe will be made by attaching a bronze
service clamp equipped with a sealed threaded port on the periphery
of the main, then drilling through the pipe wall to complete each
service port. Taps may be made either on an uncharged system or into
a main under pressure.
(2)
Location.
(A)
All water mains shall be constructed within street rights-of-way
or easements dedicated to the town.
(B)
Easements shall be provided for water mains which parallel any state
numbered highway.
(C)
(i)
Water mains shall be installed in or extended along all frontage
streets of the proposed subdivision and shall be connected to all
existing water mains where convenient.
(ii)
Provision of water mains in conjunction with cul-de-sac streets
shall be at the discretion of the town engineer. To insure reliability
of service, dead-end mains of adequate capacity shall not exceed 3,000
feet in length. Adequate capacity shall be determined by the standards
for fire flow as accepted by the state department of insurance and
the Insurance Services Office.
(iii)
All trenches must be a minimum of two feet in width. Trench
cover must be a minimum of two feet of sand and backfilled with sandy
loam and rock (no rock larger than three inches in diameter).
(D)
In zoning districts commonly referred to as “residential sections,”
the minimum size of water mains shall be eight inches in diameter.
Where intervals between cross-connecting mains must exceed 1,200 feet,
or where dead-ends must exist, ten-inch diameter or larger mains shall
be installed.
(E)
Eight-inch diameter and larger mains shall be installed in all streets
in zoning districts commonly referred to as “commercial”
with minimum size eight-inch diameter intersecting mains every 600
feet. Where dead-ends must exist, eight-inch diameter or larger mains
shall be installed. The minimum limits set forth in the above shall
not be exceeded except upon the specific approval by the town engineer,
town building official, and fire chief, but in no event shall these
requirements be less than the minimum required by the state department
of insurance and the Insurance Services Office.
(F)
Twelve-inch diameter or larger mains shall be installed in all streets
in zoning districts commonly referred to as “commercial”
or “industrial” where service is to be provided to developments
that may require fire sprinkler systems.
(G)
(i)
All valves buried in the ground shall be provided with cast-iron
valve boxes of proper dimensions to fit over the valve bonnets and
to extend to such elevation at or slightly above the finished street
grade or ground line, as approved by the town. Tops shall be complete
with covers marked “water” and shall be adjustable. Valve
boxes shall be set vertical and concentric with the valve stem.
(ii)
Any valve box which has so moved from its original position
as to prevent the application of the valve key shall be satisfactorily
reset by the developer at his own expense. A reinforced concrete pad
of the dimensions 3'0" x 3'0" x 6" shall be poured around all valve
boxes that are outside the pavement section, unless otherwise directed
by the town.
(H)
(i)
Fire hydrants shall be placed to conform with the requirements
of the state department of insurance and the Insurance Services Office.
Each hydrant shall be set upon a slab of stone or concrete not less
than four inches thick and not less than one square foot of surface
area. Where solid rock exists in the bottom of the trench and same
is excavated to the proper depth to form a foundation for the hydrant,
the slab of stone or concrete above specified may be omitted.
(ii)
The hydrant shall be set perpendicular, and to the proper depth,
and shall be carefully and substantially blocked against firm trench
walls using class 2,000 concrete.
(I)
Fire hydrants shall be installed and operable prior to the erection
of any building in which any combustible material is used, as determined
by the fire chief of the town.
(J)
The maximum distance between fire hydrants shall be 300 feet in all
zoning districts throughout the town as well as the extraterritorial
jurisdiction (ETJ) of the town. Fire hydrants shall also be placed
at all intersections and ends of cul-de-sacs.
(1998 Code, sec. 51.30; Ordinance
adopting Code)
