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TANK INSTALLATION <br /> 11.2.3.2. All measurements should be made in 11.3.6. If mechanical anchoring is used,after <br /> inches or millimeters using a standard anchoring is completed,take the"Second <br /> nonmetallic gauge stick. Vertical Diameter Measurement"and record the <br /> 11.2.3.3. All measurements should be made value on the Tank Installation Checklist.If this <br /> through the fitting closest to center of value does not equal the"First Vertical Diameter <br /> tank or each compartment. Measurement,loosen the anchor straps <br /> (see Figure 11-2). <br /> 11.2.4. Refer to Table 11-1 for maximum deflection Figure 11-2 <br /> values. <br /> 11.3. Installation Procedure Second Vertical Diameter Measurement <br /> Table 11-1 /%�/ <br /> Tank Diameter Maximum Deflection /\\ <br /> 4' ,1W. (12mm) <br /> Anchor <br /> 6' 3/4" (19mm) SvaJps Tght / <br /> 10' 1'h" (38mm) / <br /> 12' 13/4" (aamm) \/\ <br /> 11.3.1. Determine if geotextile fabric is required for /!\\/ <br /> your installation(see Section 7 for details). <br /> 11.3.2. All tank holes must have a minimum of 12" <br /> (18"for wet holes)and a maximum of 24"of <br /> approved backfill between the bottom of Measure from the bottom of the tank <br /> the tank and the bottom of the excavation or to the bottom of the fitting. <br /> concrete anchor pad. 11.3.7. Proper backfilling is required to provide <br /> 11.3.3. Place tank in excavation with lifting cables necessary support for the tank. <br /> attached to lift lugs provided on tank,while 11.3.8. Place the first 12"lift of approved backfill <br /> maintaining control of tank with guide ropes. material evenly around the tank. From the edge <br /> 11.3.4. Set tanks directly on backfill bed. of the hole or the top of an adjacent tank,push <br /> 11.3.5. Take the"First Vertical Diameter Measurement" the backfill in place by using a probe long <br /> and record the value on the Tank Installation enough to reach beneath the tank.Work the <br /> Checklist(see Figure 11-1), backfill material under the entire length of the <br /> tank between and around ribs and endcaps, <br /> Figure 11-1 eliminating all voids,so the tank is fully <br /> First Vertical Diameter Measurement supported (see Figure 11-3). <br /> Figure 11-3 <br /> Long Handled Probe <br /> %\ <br /> Backfill8ed <br /> 7 s z"Inc <br /> Measure from the bottom of the tank \\%\\\ 1"12"Lift j\\j <br /> to the bottom of the fitting. Backfill Bed- Dry Hole Wet Hole <br /> VALVA ,. 12"-24" `. 18"-24" VEVA <br /> ����/ VA/AAA/VAAVAAVAAVAA VAAVA��V�%AAA VAA VAA/VAA�VAA� <br /> Do not strike the tank with the probe or tank damage <br /> may result. <br /> 19 <br />