columns may be vertical or inclined as the design may require. Main column
splices shall be as few as possible and shall be located as near as
practicable to the intersection of the centerline of the struts. Splice
plates shall be welded so as to hold the members in line and transmit any
tension or shearing stresses to which the members may be subjected. The
connections of the tank, with the columns shall be made to distribute the
load properly over the column sections and over the shell of the tank.
Around the bottom of the tank a balcony meeting the requirements of Section
4.7.2 of AWWA D100 and conforming to all federal or local laws or
regulations shall be provided. Balcony floor plates shall be at least 6 mm
1/4 inch thick and shall be suitably punched or drilled for drainage.
1.3.4
Sizing and Design
Sizing and design of elevated tank shall be in accordance with Section 4 of
AWWA D100. The Contractor shall submit a certificate signed by a
registered professional engineer providing: (1) description of the entire
tank and foundation structural design loading conditions, (2) description
of structural design methods and codes used in establishing allowable
stresses and safety factors, (3) statement that the structural design has
been checked by experienced engineers specializing in hydraulic structures
to ensure that design calculations for member sizes, dimensions, and
fabrication processes are as prescribed by ACI and AWWA standards, and (4)
certification that the completed work was inspected in accordance with AWWA
D100 or AWWA D103 as applicable.
1.3.5
[Standpipe] [Reservoir]
The [standpipe] [reservoir] shall have a storage capacity of [_____] liters
gallons. The high-water level of [standpipe] [reservoir] shall be at
elevation [_____] with the top of foundation approximately at elevation
[_____]. The range between high and low water levels will be approximately
[_____] mm feet. Existing grade at proposed location is approximately
elevation [_____]. The [standpipe] [reservoir] shall have such standard
shell height and such diameter as will meet the requirements for the
selected standard capacity and for the high-water level specified above.
The [standpipe] [reservoir] may have [supported cone roof,] [supported
toriconical roof,] [self-supporting umbrella roof,] [self-supporting dome
roof, or] [ellipsoidal roof,] [aluminum self-supporting dome roof,] as
approved. The [standpipe] [reservoir] shall be of welded or bolted
construction.
1.3.6
Sizing of Standpipe and Reservoir
Section 6 of AWWA D100 or Section 4 of AWWA D103.
1.3.7
Coatings Certification
Coating materials for interior applications and all other materials which
will be in normal contact with potable water shall conform to NSF 61.
Certification by an independent third-party organization that all interior
coatings and materials, that come in contact with potable water, comply
with NSF 61 shall be provided.
1.4
DELIVERY, HANDLING AND STORAGE
Deliver paint in unopened containers with unbroken seals and labels showing
designated name, specification number, color, directions for use,
manufacturer, and date of manufacture, legible and intact at time of use.
SECTION 13209
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