query: How big is the average septic tank?
passage: Septic tank
A septic tank consists of one or more concrete or plastic tanks of between 4000 and 7500 liters (1,000 and 2,000 gallons); one end is connected to an inlet wastewater pipe and the other to a septic drain field. Generally these pipe connections are made with a T pipe, allowing liquid to enter and exit without disturbing any crust on the surface. Today, the design of the tank usually incorporates two chambers, each equipped with a manhole cover, and separated by a dividing wall with openings located about midway between the floor and roof of the tank.
passage: Seawise Giant
After the refit, the ship had a capacity of 564,763tonnes deadweight (DWT), a length overall of 458.45m (1,504.1ft) and a draft of 24.611m (80.74ft). It had 46 tanks, 31,541m2 (339,500sqft) of deck space, and drew too much water to pass through the English Channel.[5] The rudder weighed 230 tons, the propeller 50 tons.[13]