[Ord. No. 530 §§1-2, 8-15-1966]
A. All
gas piping and tubing for pressures not to exceed three (3) pounds
per square inch gauge pressure and all gas appliances and accessories
connected thereto shall be installed to conform to reasonable standards
of safety.
B. American Standards Association Manual — Copies in City Clerk's
Office. The installation of gas piping and tubing for pressures
not to exceed three (3) pounds per square inch gauge pressure and
the installation, alteration, maintenance and use of gas appliances
and accessories connected thereto which comply with the standards
set forth by the American Standards Association in their manual entitled "Installation of Gas Piping and Gas Appliances in Buildings," 1964 Edition A.S.A. Z21.30 - 1964 (or subsequently revised editions),
as supplemented and modified by this Section, shall be considered
prima facie as conforming to reasonable standards of safety. The provisions
of said A.S.A. Z21.30 - 1964 (or subsequently revised editions) are
incorporated herein by reference thereto as though set out in full.
The City Clerk shall keep available in his office three (3) copies
of said Code, marked as official copies, for study and inspection
by any interested parties.
[Ord. No. 530 §3, 8-15-1966]
A. When
applying two (2) pounds per square inch pressure at the meter, piping
systems shall be designed to allow a maximum of one and one-half (1½)
pounds per square inch pressure drop between the meter and the regulator
that reduces pressure to six (6) inches water column for appliance
use and will be designed to allow up to one (1) inch water column
pressure drop between the regulator that reduces pressure to six (6)
inches water column and the installed gas appliance.
B. When
supplying more than two (2) pounds per square inch pressure at the
meter, the pressure drop shall be such that the minimum inlet pressure
to the regulator that reduces to six (6) inches water column for appliance
use shall not be less than fourteen (14) inches water column pressure.
C. The
size of gas tubing hereafter installed shall conform to the following
Table:
|
Table 1
|
---|
|
Showing capacity of tubing of different diameters and length
at one and one-half (1.5) PSI and one (1) inch WC pressure drops and
specific gravity of sixty-nine hundredths (0.69).
|
Length
|
2 PSI Pressure Supplied at the Meter and 1.5 PSI Pressure
Drop OD of Tubing
|
Length
|
1" WC Pressure Drop OD of Tubing
|
---|
|
⅜"
|
½"
|
⅝"
|
⅜"
|
½"
|
⅝"
|
---|
5 ft.
|
400
|
890
|
1620
|
2 ft.
|
98
|
218
|
395
|
10 ft.
|
285
|
635
|
1160
|
4 ft.
|
70
|
156
|
281
|
15 ft.
|
230
|
510
|
930
|
6 ft.
|
56
|
124
|
226
|
20 ft.
|
200
|
445
|
810
|
8 ft.
|
47
|
104
|
190
|
30 ft.
|
165
|
367
|
670
|
10 ft.
|
40
|
89
|
162
|
40 ft.
|
145
|
323
|
570
|
13 ft.
|
33
|
73
|
133
|
50 ft.
|
125
|
270
|
505
|
16 ft.
|
28
|
62
|
113
|
60 ft.
|
115
|
255
|
465
|
19 ft.
|
24
|
53
|
97
|
70 ft.
|
107
|
238
|
430
|
22 ft.
|
21
|
47
|
85
|
80 ft.
|
100
|
223
|
405
|
26 ft.
|
19
|
42
|
77
|
90 ft.
|
95
|
211
|
385
|
30 ft.
|
17
|
38
|
69
|
100 ft.
|
90
|
200
|
365
|
34 ft.
|
15
|
33
|
60
|
115 ft.
|
84
|
187
|
340
|
38 ft.
|
14
|
31
|
56
|
130 ft.
|
80
|
178
|
325
|
42 ft.
|
13
|
29
|
52
|
150 ft.
|
74
|
164
|
300
|
50 ft.
|
11
|
24
|
44
|
[Ord. No. 530 §4, 8-15-1966]
A. Regulators
installed to reduce pressure from a maximum of three (3) pounds per
square inch pressure to six (6) inches water column for appliance
use shall:
1. Be rated for at least three (3) pounds per square inch gauge operating
pressure.
2. Have full shut off to maintain reduced pressure under static load
conditions (no gas flowing).
3. Be rated to supply the load of appliances it feeds.
4. Be vented by either a number eighty (80) vent limiting orifice or
by a ball check type regulator vent limiter.
5. Be installed in accordance with manufacturers instructions.
6. Be installed on piping where it is not concealed.
[Ord. No. 530 §5, 8-15-1966]
All appliances rated for inches water column pressure operation
must have an appliance regulator reducing pressure from six (6) inches
water column to the rated operating pressure.
[Ord. No. 530 §§6-7, 8-15-1966]
A. Piping
carrying pressure in excess of fourteen (14) inches water column shall
be clearly marked with the pressure the pipe is carrying at as close
to six (6) foot intervals as possible.
B. All
domestic piping carrying gas at pressures above fourteen (14) inches
water column shall be semi-rigid copper tubing.
[Ord. No. 530 §8, 8-15-1966]
When copper tubing runs in a wall, flexible metal conduit shall
be used where the tubing runs through the plate-spaces. In the wall,
the conduit must extend at least eighteen (18) inches either side
of the plate-space.
[Ord. No. 530, §9, 8-15-1966]
A spring loaded, brass core cock with flare to pipe thread connections
must be used ahead of the regulator in lieu of an appliance shut off
valve.
[Ord. No. 530 §10, 8-15-1966]
All piping must be run parallel or perpendicular to the joists.
Tubing run parallel to the joist shall be fastened to the center of
the vertical face. Tubing run perpendicular to the joists shall be
fastened to the underside of the joist; preferably close to the water
pipes, conduit, duct work, or center beams. Perpendicular runs may
also be drilled through the center of the joist.
[Ord. No. 530 §11, 8-15-1966]
All tubing shall be supported at not more than four (4) foot
intervals except for vertical drops to appliances.
[Ord. No. 530 §12, 8-15-1966]
Where tubing is used, all free standing range connections shall
be made with three hundred sixty degree (360°) coil of tubing
between twelve (12) and eighteen (18) inches in diameter.
[Ord. No. 530 §13, 8-15-1966]
No drips or pipe grading is required. Connections may be taken
off of the bottom of horizontal runs.
[Ord. No. 530 §14, 8-15-1966]
All fittings in a copper system shall be flared.
[Ord. No. 528 §3, 7-11-1966]
Only the City or its representative shall inspect and turn on
natural gas device, to a customer.
[Ord. No. 530 §15, 8-15-1966; Ord. No. 903 §22, 6-27-1983]
A. No
person, firm or corporation shall sell or offer for sale or install
any gas piping or tubing system for pressures not exceeding three
(3) pounds per square inch or any gas appliance or accessory connected
thereto if the same when installed for use would be in violation of
any of the provisions of this Chapter.
B. Violation
of any provision of this Chapter shall be a misdemeanor.