14
The basin, when installed, has natural buoyant forces acting upon
it. Think of this as putting an empty glass, bottom first, into a sink
filled with water. Ballast is required to compensate for these forces.
Ballasting is accomplished by pouring concrete in place when the tank
is set into the hole at the site.
FILL BASIN WITH WATER BEFORE
POURING BALLAST.
Calculating the required ballast weight is not necessary since basins
of any depth up to a
maximum of 10 ft
. require the same amount
of ballast (1/3 yd
3
of concrete). This assumes the basin is installed
without internal components (pump(s), discharge, etc.) being installed.
The views below show the hole for the package may be round or
rectangular but must have a
minimum of 1/3 cubic yard
of concrete
and the specified minimum(s) shown below.
STEP 8: BALLASTING REQUIREMENTS
IMPORTANT! - FAILURE TO BALLAST STATION WILL VOID
WARRANTY AND MAY RESULT IN PERSONAL INJURY AND
PROPERTY DAMAGE. AVOID ANY DIRT SPILLAGE INTO TANK
DURING BALLAST BACKFILL.
CONCRETE BAGS
Per Bag
Weight (Dry)
Number Bags
Required
40 lb
50 lb
60 lb
80 lb
90 lb
30
25
20
15
14
IMPORTANT! -
Always
follow manufactures mixing
instructions
SQUARE BALLAST FORM
Square
Height of Form Concrete Used
36” x 36”
16.50”
0.340 Cu. Yds.
40” x 40”
11.50”
0.338 Cu. Yds.
42” x 42”
10.00”
0.336 Cu. Yds.
48” x 48”
7.50”
0.347 Cu. Yds.
ROUND BALLAST FORM
Diameter
Height of Form Concrete Used
36”
** 22.50”
0.342 Cu. Yds.
40”
17.25”
0.336 Cu. Yds.
42”
14.50”
0.338 Cu. Yds.
48”
9.75”
0.338 Cu. Yds.
** IMPORTANT! - FOR A 36” DIAMETER
ROUND FORM OR HOLE, THE ECOTRAN
UNIT MUST BE SET 4” ABOVE THE
BEDDING. 4” BLOCKS CAN BE USED TO
ACCOMPLISH THIS.
Summary of Contents for Barnes EcoTRAN
Page 6: ...6 PACKAGED PARTS AS RECEIVED ...
Page 10: ...10 STEP 4 SETTING THE BASIN Location Overview ...
Page 11: ...11 STEP 5 RISER TANK PARTS ASSEMBLY ...
Page 32: ...32 ...
Page 34: ...Notes ...
