Septic Resources
AK Septic Installation Manual
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Installation Instructions for Standard Septic Tanks
Step 1: Dig and measure for appropriate tank. Allow for an extra 6-12 inches of space around the tank. Maximum depth of bury is 24” from top of tank to finish grade.
Step 2: Dump 6-12 inches of gravel mixture in the bottom of the hole and level.
Step 3: Set tank in hole and move the tank back and forth to settle tank in the gravel mixture. Use 3/8” – 3/4” gravel type aggregate.
Step 4: Level tank before removing straps in case further extraction is needed. Install riser (if used) at this time.
Step 5: Start addition of water and add approximately one foot more gravel mixture around the base of the tank. Continue to add the water at the same rate as the aggregate backfill material.
Step 6: Continue the backfill with gravel mixture up to the top of the tank.
Step 7: Level-out the gravel and prepare for the final top soil. Approximately 6” deep. Install cover at this time.
Step 8: Backfill the finish grade with loose topsoil.
For full instructions on additional parts and tanks, please download the AK Septic Installation Manual.