§ 74-116. Septic tanks generally.

(a)

Every septic tank shall have a liquid capacity of at least 24 hours but in no case less than 1,000 gallons. The septic tank capacity will be based on the chart in subsection (e), indicating liquid capacity of tank.

(b)

Every septic tank shall be constructed in a workmanlike manner of materials not subject to corrosion or decay when installed, and shall be of watertight construction and shall be provided with one or more suitable openings with covers to permit inspection and cleaning. Such openings shall have a removable, reasonably tight metal or concrete cover which is between eight and 16 inches below the ground surface.

(c)

All septic tanks shall be constructed to be structurally sound and designed to withstand normal stresses under which it will be placed. The tank shall be capable of withstanding 500 pounds per square foot of dead load pressure.

(d)

Inlet baffles shall extend at least 12 inches below the surface of the liquid and to within one inch of the top of the lid. The invert elevation of the inlet shall be not less than two inches above the liquid level in the tank or any of its compartments. The outlet baffle shall be no further than 12 inches from the outlet orifice. The baffle shall extend to a depth of at least 40 percent of the liquid depth. There shall be a clearance of at least one inch of free space between the top of the tank and the baffle.

(e)

The following table shall be used in conjunction with subsection (a):

LIQUID CAPACITY OF TANK

Number of bedrooms	Minimum tank capacity (gallons)
Up to 3 .....	1,000
Over 3, per bedroom .....	500

 

(Code 1979, § 21-61)