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NAMEImp — e �.; ;,,�_ z INSTALLATION PROCEDURE • Determine if geotextile fabric is required for your installation(see Section F for details). Do not enter the tank excavation unless all OSHA • All tank holes must have a minimum of 12"(18"for requirements are followed. wet holes)and a maximum of 24"of approved backfill Collapsing excavation walls may cause death between the bottom of the tank and the bottom of the or serious injury. excavation or concrete anchor pad. • Place tank in excavation with lifting cables attached to BEFORE YOU BEGIN lift lugs provided on tank,while maintaining control of It is important to review all instructions to make sure you tank with guide ropes(see Figure A-2 or A-3). are compliant with the proper procedures.This includes: • Set tanks directly on backfill bed. • Bed and Backfill • Take the"First Vertical Diameter Measurement"and • Pre-Installation Testing record the value on the Tank Installation Checklist • Hole Size/Burial Depth (see Figure I-2). • Anchoring Figure 1-2 First Vertical Diamstor Measuremont TANK VERTICAL DIAMETER MEASUREMENTS Each vertical diameter measurement is used to determine the tank's deflection. If at any point the deflection measurements exceed the values in Table 1-1, stop the installation and contact Tank Technical Support. During installation, vertical diameter measurements must be taken and recorded on the Tank Installation Checklist after each of the following steps: • "First Vertical Diameter Measurement" Backfill Bed / - Placement of tank on backfill bed / • "Second Vertical Diameter Measurement" � \ � �� - Anchoring completed (only applicable if mechanical anchoring is used.) Measure from the bottom of the tank • "Third Vertical Diameter Measurement" to the bottom of the fitting - Backfill to tank top. If mechanical anchoring is used,after anchoring • "Fourth and Fifth Vertical Diameter Measurements" is completed,take the"Second Vertical Diameter - Backfill to subgrade,before the concrete pad. Measurement"and record the value on the Tank Installation Checklist. If this value does not equal the Separate vertical diameter measurements must be "First Vertical Diameter Measurement',loosen the recorded for each tank compartment. anchor straps(see Figure 1-3). • All measurements for vertical deflection are made Figure 1-3 from the bottom of the tank to the bottom of the fitting. • All measurements should be made in inches or Second Vertical Diameter Messuroment millimeters using a standard nonmetallic gauge stick. • All measurements should be made through the fitting closest to center of tank or each compartment. / or Refer to Table 1-1 for maximum deflection values. Straps / TABLE 1-1 Tank Diameter Maximum Deflection 4' 1/Z' (12mm) 6' W. (19mm) / 8' 11/;' (31 mm) 10' 1 11/2" (38mm) 12' 11/z' (38mm) V \ Measure from the bottom of the tank to the bottom of the fitting 19