Sec.16-11-6. Cubic foot

The term "cubic foot" of gas has the following meanings:

(1) In cases where gas is supplied and metered to customers at standard delivery pressure, a cubic foot of gas shall be defined to be the volume of gas which, at the temperature and pressure existing in the meter, occupies one cubic foot, except that a temperature and pressure correction to standard conditions shall be permissible at the gas company's option when large volumes of gas are being metered.

(2) In cases where gas is supplied to customers through orifice or positive displacement meters at other than standard delivery pressure, a cubic foot of gas shall be defined to be that volume of gas which, at 60°F. and at absolute pressure of 14.73 pounds per square inch, (thirty inches of mercury) occupies one cubic foot; except that, in cases where different bases that are considered by the commission to be fair and reasonable are provided for in gas sales contracts or in rules or practices of a gas company, such different bases shall be effective.

(3) The standard cubic foot of gas for testing the gas itself for heating available shall be that volume of gas which, when saturated with water vapor and at a temperature of 60°F., and under a pressure equivalent to that of thirty inches of mercury (mercury at 32°F., and under standard gravity), occupies one cubic foot.