tanks with cross-braced columns instead. Bolted
tanks are available only as standpipes and ground
reservoirs.
**************************************************************************
The design, fabrication, and erection of the [elevated tank] [standpipe]
[reservoir] shall be in accordance with the applicable requirements of AWWA
D100 or AWWA D103 except as modified herein. Earthquake design shall be
[in accordance with Sections 13080 SEISMIC PROTECTION FOR MISCELLANEOUS
EQUIPMENT and 15070A SEISMIC PROTECTION FOR MECHANICAL EQUIPMENT] [as
indicated]. No additional thickness for corrosion allowance will be
required. Design metal temperature shall be [_____] degrees C degrees F.
The elevated tank shall be designed for a basic wind speed of [_____] km
per hour miles per hour in accordance with ASCE 7 or designed in accordance
with AWWA D100 wind load design, whichever provides the greater pressure.
[The elevated tank shall be designed for a snow load of 1200 Pa 25 psf
[_____]]. The [standpipe] [reservoir] shall be designed for a peak wind
speed of [_____] and snow load of [_____].
1.3.2
Welding
Qualification of welding procedures, welders, and welding operators shall
be in accordance with Section 8.2 of AWWA D100.
1.3.3
**************************************************************************
NOTE: The blank spaces will be filled in for
capacity and governing elevations; minimum diameters
of tank and riser pipe. The following table should
be used in selecting minimum requirements:
Size of riser
(Tank capacity,
Diameter,
(warm and
kL
minimum
temperate zones)
-------------
---------
----------------
380
8.50
m
910
mm
570
9.75
m
1220
mm
760
10.95
m
1220
mm
950
11.6
m
1220
mm
1135
12.2
m
1520
mm
1515
13.7
m
1520
mm
1890
15.25
m
1830
mm
(
Size of riser
(Tank capacity,
Diameter,
(warm and
gallons
minimum
temperate zones)
-------------
---------
----------------
100,000
28
ft.
0
in.
3
ft.
0
in.
150,000
32
ft.
0
in.
4
ft.
0
in.
200,000
36
ft.
0
in.
4
ft.
0
in.
250,000
38
ft.
0
in.
4
ft.
0
in.
300,000
40
ft.
0
in.
5
ft.
0
in.
400,000
45
ft.
0
in.
5
ft.
0
in.
500,000
50
ft.
0
in.
6
ft.
0
in.
)
SECTION 13209
Page 9
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