[Ord. No. 1042 §2-1, 2-20-1992]
The water distribution system and any extensions thereof shall
have adequate capacity to supply the normal or average and peak hour
demands of all customers, domestic, public, commercial and industrial,
maintaining a pressure of not less than thirty (30) pounds per square
inch at all points of delivery, without reducing the service to any
customers below these requirements, and shall have adequate capacity
to be capable of delivering not less than one thousand (1,000) gallons
per minute for fire protection on the day of maximum customer demand
with a residual pressure of not less than twenty (20) pounds per square
inch to at least one (1) point within three hundred (300) feet of
each building to be served or proposed to be served by such system
and extension. In apartment, commercial and industrial areas, fire
flow shall meet the requirements of the "Standard Schedule for Grading
Cities and Towns of the United States" of the National Board of Fire
Underwriters, New York.
[Ord. No. 1042 §2-2, 2-20-1992]
A. The
following criteria will be used in estimating the average day demand,
maximum day demand and peak hour demand incident to the determination
of water main sizes.
1. Residential population = N = number of dwelling units x 3.5.
2. Average daily water demand of residential population in gallons per
day (gpd) = R = N x 100.
3. Average daily commercial and industrial water demand in gpd = C =
number of commercial and industrial employees x one hundred (100).
Appropriate additional water demand allowance shall be made for commercial
and/or industrial establishments of types having water demands in
excess of one hundred (100) gpd per employee.
4. Average daily school water demand in gpd = S = number of staff employees
and students x 20.
5. Average daily water demand in gpd = A = R + C + S.
6. Maximum daily water demand in gpd = M + A x 2.
7. Peak hour demand in gpd = P = M x 2.
8. Peak hour demand in gallons per minute (gpm) = P = 1440.
[Ord. No. 1042, §2-3, 2-20-1992]
A. Applicable
standards shall be the latest revisions of the following:
1. American Water Works Association (AWWA).
a. C104 — cement-mortar lining for ductile-iron pipe and fittings
for water.
b. C110 — gray-iron and ductile-iron fittings, 3-inch through
48-inch for water and other liquids.
c. C111 — rubber-gasket joints for ductile-iron and gray-iron
pressure pipe and fittings.
d. C115 — flanged ductile-iron pipe with threaded flanges.
e. C150 — thickness design of ductile-iron pipe.
f. C151 — ductile-iron pipe centrifugally cast in metal molds
or sand-lined molds for water or other liquids.
g. C500 — gate valves — 3-inch through 48-inch nps —
for water and sewage systems.
h. C502 — dry-barrel fire hydrants.
i. C504 — rubber-seated butterfly valves.
j. C509 — resilient-seated gate valves for water and sewerage
systems.
k. C550 — protective epoxy interior coatings for valves and hydrants.
2. American National Standards Institute (ANSI).
a. B16.1 — cast-iron pipe flanges and flanged fittings, classes
25, 125, 250 and 800.
b. B16.21 — non-metallic flat gaskets for pipe flanges.
3. American Society of Testing and Materials (ASTM).
a. A307 — carbon steel externally threaded fasteners.
[Ord. No. 1042 §2-4, 2-20-1992; Ord. No. 1543 §1, 11-6-2006]
A. Mains
and fittings of less than sixteen (16) inch size shall be cement-lined
ductile iron.
B. No
mains shall be designed for less than one hundred fifty (150) psi,
nor be less than eight (8) inch size.
C. Pipe
shall conform to AWWA C151.
D. All
ductile-iron pipe and fittings shall be cement lined in accordance
with AWWA C104.
E. Pipe
and fittings shall be coated with manufacturer's standard coating.
F. Ductile-iron
pipe thickness shall be determined according to AWWA C150. Minimum
pipe thickness shall be Class 50.
G. Joints.
1. Flanged.
a. For all interior and exposed exterior pipe.
b. Flanges for pipe designed for internal pressures not exceeding two
hundred fifty (250) psi shall conform to AWWA C115.
2. Mechanical and compression type.
a. Use mechanical or compression-type joints for all buried pipe unless
otherwise specified.
b. Mechanical and compression-type joints shall conform to AWWA C111.
H. Fittings.
1. All fittings shall be ductile iron.
2. Flanged fittings shall conform with AWWA C110, drilled ANSI B16.1,
Class 125.
3. Mechanical joint shall conform to AWWA C110.
4. Fittings for pipe with compression-type joints shall have mechanical
or compression-type joints.
5. Furnish all specials, taps, plugs, flanges and wall fittings as required.
I. Gaskets And Bolting Materials.
1. Provide all gaskets, bolts, nuts, lubricant, and other accessories
required to install pipe complete and ready for service.
2. Gaskets for flanged pipe shall be one-eighth (⅛) inch thick,
full-faced, synthetic rubber conforming to ANSI B16.21.
3. Bolts for flanged pipe shall conform to ASTM 307, Grade B. Nuts and
bolt heads shall be hexagonal.
J. Pipe
and fittings shall be marked with the manufacturer's name, thickness
class or design pressure and date of fabrication.
[Ord. No. 1042 §2-5, 2-20-1992]
A. All
valves six (6) inch through twelve (12) inch size shall be gate valves
conforming to AWWA C509 and shall close with clockwise rotation.
B. All
valves larger than twelve (12) inch size shall be butterfly valves
conforming to AWWA C504 and shall close with clockwise rotation.
C. Valves
shall be installed at appropriate points in all mains to permit cutting
off water from sections of reasonable length. Each valve shall be
accessible for operation only with standard valve key through a valve
box approved by the Department extending to the ground surface. Valve
box lids shall be marked "Water". Valves shall be one (1) of three
(3) manufacturer's models as specified by the department.
[Ord. No. 1042 §2-6, 2-20-1992; Ord. No. 1643 §1, 7-6-2009; Ord. No. 2036, 6-6-2022]
A. All
fire hydrants shall be the traffic model, break-away type, and conform
to the current AWWA specification C502. Such hydrants shall have two
(2), two and one-half (2 1/2) inch nozzles and one (1), four and one-half
(4 1/2) inch pumper nozzle with national standard fire hose coupling
screw thread.
B. Nozzle
caps shall be the "nut type" having the same dimensions as the operating
nut. Such caps shall be securely chained to the base of the hydrant.
1. Operating nut shall include the weather shield.
2. Hydrant shall be furnished with a six (6) inch isolation gate valve.
3. Direction to open shall be counterclockwise and be marked as such.
C. Hydrants
shall come with an oil reservoir.
D. Hydrants
shall be manufactured safety red, or other red as approved by the
City Engineer.
E. Hydrants
shall be furnished with temporary black plastic caps or shall be covered
with a black plastic bag until the hydrants are available for service.
F. Fire
hydrant shall be Mueller "Centurion," Waterous "Pacer 90 or 100,"
Clow Valve "Medallion," or other as approved by the City Engineer.
H. Tapping
sleeves and valves shall be Mueller, Waterous, Clow Valve, or American
Flow Control (AFC).
I. Butterfly
valves shall be Mueller or American Flow Control (AFC).
J. Gate
valves shall be Mueller, Waterous, or American Flow Control.
K. Hydrant
collars shall be installed on the our and one-half (4 1/2) outlet
of all new hydrants to indicate the flow in gallons per minute (GPM).
The colors shall be as follows:
2. Green: 1,000 — 1,499 GPM.
4. Red: Below 500 GPM.
The other side of the hydrant collar shall indicate: "Out of
Order."
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[Ord. No. 1042 §2-7, 2-20-1992]
The State and County Highway Departments require a permit for
work to be performed on roadways or easements under their jurisdiction.
No work will be permitted by the Water Department that has not been
designed and approved as satisfactory by the State or County Highway
Departments.