Marley / Sigma F Series CoolingTower / Specifications: Base

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Specifications

 

Specification Value

3.0Construction:

3.1

The tower shall be capable of with-

The limiting water quality values indicated are those which are

 

standing water having a pH of 6.5 to

acceptable for the normal materials of construction specified. If

 

8.0; a chloride content (NaCl) up to 750

water of more aggressive quality is anticipated please change

 

ppm; a sulfate content (SO4 ) up to

hardware material requirement to series 316 stainless steel, or

 

1200 ppm; a calcium content (CaCO3)

silicon bronze, as you may have agreed upon beforehand with

 

up to 800 ppm; silica (SiO2) up to 150

the Marley sales representative.

 

ppm; and design hot water tempera-

If there is any doubt in your mind as to the grade of hardware

 

tures up to 120°F (48.9°C). The circulat-

 

ing water will contain no oil, grease,

that is appropriate to your water quality, please have a sample of

 

fatty acids, or organic solvents.

it analyzed and provide Marley with a copy of the analysis.

3.2The structural framework of the tower shall be pultruded or molded fiberglass, designed in accordance with ASCE Structural Plastics Design Manual. All allowable design values shall be factored for wet service, temperature, and duration in accordance with standard engineering practices.

3.3

Basic design criteria shall be 30 psf

Discuss higher design loadings with your Marley sales represen-

 

(1.44 kPa) wind load and 5%g seismic

tative.

 

load.

 

3.4

Multicell towers shall include stainless

Multicell towers must have plenum partitions between cells.

 

steel partitions between cells in the fill

Otherwise, air will be induced downward through an inoperative

 

areas, and fiberglass partitions in the

fan, bypassing the fill entirely. Without these partitions, part-load

 

plenum area. Partitions shall extend

or off-season operation of the tower would be completely unsat-

 

the full height of the tower from the

isfactory.

 

base of fill to the underneath side of

Fill partitions prevent the random migration of water from cell to

 

the fan deck.

 

 

cell, and permit individual cell operation during reduced ambient

3.5

Column lines shall be on no greater

or low load conditions.

 

than 4'-0" (1.22 m) longitudinal centers,

 

 

and the base of all columns shall be

 

 

firmly anchored to series 304 stainless

 

 

steel base plates. Framing joints shall

 

 

be made with 1/2" diameter or larger

 

 

series 300 stainless steel machine

 

 

bolts. Critical framing joints shall be

 

 

augmented with 1.06" OD heavy wall

 

 

fiberglass sleeves to transmit loads.

 

3.6

No field gluing of joints, or any other

The variable weather conditions encountered during on-site

 

structural member, will be allowed.

construction of cooling towers does not result in the stable condi-

 

 

tions of temperature and humidity that assure proper bonding

 

 

during the gluing process.

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SPX Cooling Technologies FSIG-TS-08A specifications Construction

FSIG-TS-08A specifications

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