Gas Service Manual – Chapter 5: Service Installations
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Alliant Energy - Gas Service Manual
Chapter 5 – Service Installations
Issued: 2015
Supersedes: 2012
A. COMPANY INSTALLATION
1. The Company, after consulting with the customer, specifies the location of the service
metering point.
2. The Company provides each building or structure with only one service pressure (refer to
GSM Chapter 1, “Service Pressures”) supplied by one service pipe to a metering
installation(s) located adjacent to a building or structure located on the customer’s
premise.
3. The above rule will be strictly adhered to except for the following exceptions.
a) For a row house, condominium or townhouse which is a place of abode not more
than three stories in height, arranged to accommodate three or more attached row
living units in which each living unit is separated from the adjoining unit by a
firewall(s)* as allowed by the local Authority Having Jurisdiction (AHJ), a separate
service pipe may be provided for each two attached units.
b) For duplexes where the dwelling units do not share a common wall, a separate
service pipe may be provided for each unit (i.e. separated by garage).
c) For duplexes or condominiums with zero lot lines, in which each property unit is
separated from the adjoining property unit by a firewall(s)* as allowed by the local
AHJ, a separate service pipe may be provided for each property unit.
Note: If the developer elects to pipe across property units from one central delivery
point (i.e. one service serves the entire structure), the developer is responsible for
securing all required easements from the adjacent property owners prior to gas
service being installed. All required easements are to be granted to the Company.
4. All firewalls must extend from the basement or lowest floor to the under-side of the roof
deck and have no HVAC vents or other piping between the units through the firewall, and
may have no metallic paths bonding the units together, in accordance with the
International Building Code (IBC) Chapter 7. Typical firewall ratings:
a) 1-Hour – Two (2)-1/4 inch sheets of sheet rock separated by a 2x4 stud.
b) 2-Hour – Two (2)-3/4 inch sheets of sheet rock separated by a 2x4 stud.
c) 3-Hour – Four (4)-5/8 inch sheets of sheet rock separated by 2 sets of 2x4 studs
creating double walls.
d) 4-Hour or greater – 8 inch cinder blocks walls.
5. The Authority Having Jurisdiction (AHJ) has the final say on what firewall construction
is required.
If you hear, see, or smell leaking natural gas, call Alliant Energy at 1-800-ALLIANT (1-800-255-4268)
Gas Service Manual – Chapter 5: Service Installations
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6. All other exceptions must be specifically approved by the Company. Extension of
service to each delivery point will be installed in accordance with the applicable
Company extension rules (refer to GSM Chapter 4). Each delivery point will be
individually metered.
7. Service will not be extended to buildings or structures for gas usage that is determined to
be a non-essential use of natural gas or does not meet energy conservation standards per
federal, state, or local codes and ordinances.
8. For all meter installations of 1,800 Scfh or less at 7" w.c. delivery pressure and for all
meter connections of 1,350 Scfh or less at 2 psig delivery pressure, the Company will
install a gas shutoff valve immediately after its facility which will become the property of
the customer. The customer is responsible for all operation and maintenance of this valve
after initial installation. This valve is to be used by the customer or their agent for all
non-emergency gas shutoff. It can also be used in emergencies when the Company’s gas
meter stop is inaccessible.
9. For all meter installations greater than 1,800 Scfh at 7" w.c. delivery pressure and for all
meter connections greater than 1,350 Scfh at 2 psig or greater delivery pressure, the
Company shall install a gas shutoff valve immediately before the customer owned piping
which will remain the property of the Company. This valve is for use only by the
Company, unless special arrangements are made with the Company to allow the customer
to operate the valve. It is recommended that customers install their own shut-off valve
for maintenance or emergency use.
B. TERMS AND CONDITIONS
1. The Company must receive a gas piping statement (available by calling 1-800-ALLIANT
(1-800-255-4268)) signed by the customer or contractor stating that the customer’s
installation is in compliance with applicable gas codes. This includes pressure testing the
gas piping system in accordance with NFPA 54, Section 8.1 and the Company’s Gas
Service Manual prior to the meter being installed, connected and pressurized.
2. The Company may refuse or disconnect service to any installation which does not
comply with this manual or may be dangerous to life or property.
3. The customer shall make application to the Company for the proposed gas service and
obtain approval for the meter location before starting installation of the customer gas
piping. Any construction contributions must be paid to the Company or a payment plan
established per the applicable gas tariff prior to the gas service pipe being installed
(http://www.alliantenergy.com/AboutAlliantEnergy/CompanyInformation/Tariffs).
If you hear, see, or smell leaking natural gas, call Alliant Energy at 1-800-ALLIANT (1-800-255-4268)
Gas Service Manual – Chapter 5: Service Installations
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4. The customer shall clear the proposed pipe route of vegetation, construction materials
and other obstacles which prevent the installation of the gas service and advise the
Company of known underground obstacles such as septic tanks, invisible fences,
sprinkler systems, etc.
5. The customer shall provide the right of access at no expense to the Company for the
installation and maintenance of the gas service pipe.
6. No building, structure or tree shall be placed over the pipe route.
7. The service pipe will be installed only after final grade levels have been established, and
other conditions are found to be satisfactory by the Company. Rough grade must be
within 6 inches of final grade.
8. When a service riser is installed using an external wall mount bracket, the wall mount
bracket must be installed completely below finished grade.
9. After installation of the gas service pipe, the grade shall not be increased or decreased
more than 6 inches without notifying the Company BEFORE grading begins. If
rebuilding and/or relocation of the gas service and metering equipment are required due
to a grade change, the customer must pay the entire cost.
C. TEMPORARY SERVICES FOR CONSTRUCTION SITES
1. The customer shall make application to the Company for the proposed temporary service.
2. The Company shall determine if temporary service can be provided and provide approval
of the service location.
D. LARGE MULTIPLE OCCUPANCY BUILDINGS
1. The customer shall consult with the Company when planning a building that may include
a Company-owned distribution system in or on the building.
2. The Company, after consulting with the customer, will specify the final location and
design of the service metering point.
(END)
If you hear, see, or smell leaking natural gas, call Alliant Energy at 1-800-ALLIANT (1-800-255-4268)
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If you hear, see, or smell leaking natural gas, call Alliant Energy at 1-800-ALLIANT (1-800-255-4268)