In drafting terminology, LIFT is defined as what distance?

In drafting terminology, LIFT is defined as what distance?

• A. The vertical distance from the surface of the water to the middle of the intake.
• B. The horizontal distance from the surface of the water to the middle of the intake.
• C. The vertical distance from the surface of the water to the pump discharge.
• D. The vertical distance from the surface of the water to the edge of the intake.

Answer: (A)

Lift in drafting is the vertical distance from the water surface down to the centerline of the intake. This measures how far water must be drawn up to reach the pump, which determines the suction head the pump must develop and affects priming and the risk of air entering the system. The other descriptions describe horizontal distance, distance to the pump discharge, or distance to the edge of the intake, which are not what lift represents.

Lift in drafting is the vertical distance from the water surface down to the centerline of the intake. This measures how far water must be drawn up to reach the pump, which determines the suction head the pump must develop and affects priming and the risk of air entering the system. The other descriptions describe horizontal distance, distance to the pump discharge, or distance to the edge of the intake, which are not what lift represents.