Concrete Septic Tank Weight Limit

The minimum compressive strength for the concrete shall be 4 000 pounds per square inch at 28 days.

Concrete septic tank weight limit.

In other words it is a watertight single storeyed underground tank in which sewage is retained sufficiently long to permit sedimentation of suspended solids and practical digestion of settled sludge by anaerobic bacterial action. A precast concrete septic tank will never float to the surface as some lighter weight tanks can do in certain situations. Septic tank is a devise which deals with the sewage from water closets. Remember the tank is not traffic rated until a licensed professional engineer in good standing states the maximum design capacity in writing.

Driving parking or building infrastructure over septic tanks risks damaging your septic tank lid possibly leading to a cave in. Our precast concrete residential septic tanks give new england homeowners a reliable solution for wastewater management systems. Precast concrete septic tanks from shea are strong watertight environmentally friendly and ideal for any residential waste management system. Consider that unless you have installed a septic tank with a vehicle traffic rated or highway traffic rated strength cover a typical concrete residential septic tank following the university of minnesota design guide as a typical standard is built to carry the weight of the soil covering the septic tank and a vehicle wheel load of 2 500 lbs.

With a specific gravity of 2 40 precast concrete septic tanks resist buoyant forces better than other septic tank materials. Any precast concrete septic tank shall be certified by its manufacturer or distributer as meeting the applicable requirements of astm c1227. Eric barger is president of barger sons inc a manufacturer of septic tanks grease traps pump tanks catch basins and other precast concrete products based in lenoir city tenn. Hdpe has a specific gravity of 0 97.

Acceptable protective measures include but are not limited to a padlock a cover that can only be removed with tools or a cover having a minimum weight of 29 5 kg 65 lb. Typical top loading strength requirements for concrete septic tanks that in our opinion should also apply to septic tanks drywells cesspools of any construction range between 500 and 1100 psf or a top load of 2 500 lbs wheel load soil other loads with the warning that for systems subject to heavier vehicle loading or other heavy loading the strength of the entire assembly top walls bottom must be adusted accordingly.