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Sigma 1200 Cooling Tower
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Engineering Data : Concrete Basin
11
NotE
1 Use this bulletin for preliminary layouts only. Do not use for
construction. Obtain current drawings from your Marley sales
representative. Concrete basin design and construction are by
other contractors or purchaser.
2 Operating weight is total wet operating weight of tower only,
excluding water in concrete basin.
3 Maintain at least 2'-0" of clear space at endwall faces
for construction purposes. Air inlet faces must have
an unobstructed air supply. Consult your Marley sales
representative for recommendations if nearby obstructions may
interfere.
4 Minimum basin depth is 1'-6". Maximum basin depth is
5'-6". Extended interior columns for deep basins are available as
an option. Perimeter columns remain at 1'-6" below top of basin
curb.
5 All anchor bolts complete with nut and washer must be
furnished by others. Bolts must be
3
⁄4" diameter with 2" all-
thread projection.
6 Other contractors or purchaser must design, construct, and
furnish sump and overflow to suit requirements.
Tower
Model
Dimensions Operating Weight lb
W A B Single Cell Each Cell Add
1211 31'-6
3
⁄4" 4 16'-0" 39040 35910
1221 33'-6
3
⁄4" 4 16'-0" 41960 39420
1231 33'-6
3
⁄4" 5 20'-0" 49100 46560
1241 33'-6
3
⁄4" 6 24'-0" 59020 56470
1251 37'-6
3
⁄4" 6 24'-0" 61200 58530
1261 37'-6
3
⁄4" 7 28'-0" 70900 68240
1’-6
1'-0 RECOMMENDED
OPERATING WATER LEVEL
1’-6
1'-0 RECOMMENDED
OPERATING WATER LEVEL
FLAt BAsiN sEctioN dEEP BAsiN sEctioN
A BAYS @ 4'-0" = B PER CELL
6"
AIR INLET FACE
C
L
COL.
C
L
COL.
6" MIN. 6" MIN.
6"
W IN TO IN OF BASIN WALLS
AIR INLET FACE
ENDWALL FACE
ENDWALL FACE
6" MIN.
6" MIN.
PLAN