Metal piece, formed with a downward projecting lip, which is placed horizontally on the exterior corners to divert water away from the underside of a soffit or an opening in a wall.
Drip stone
Stone section installed over a window, which prevents water from running down the window.
Drippage
Bitumen material that drips through roof deck joints, or over the edge of a roof deck.
Drive
(1) To propel as with motor power. (2) Mechanism that transfers power from the motor to the mechanism being driven. (3) Motor and gearing on a crane.
Drive fit
Also called an interference fit, this very tight fit requires force to mate the parts.
Drive screw
Nail that has steeply inclined screw threads running along the length of the shank.
Drive shaft
Bridge crane shaft, which connects the drive, motor to a wheel at each end of the bridge and used to transmit power. Alternately called a squarring shaft or a cross shaft.
Driveway
Path for cars, leading from the street to a house or garage, etc.
Driving time radius
Time it takes to drive to an outlying area from a major urban area.
Driving wheel
Wheel that transmits motion and force, by receiving power from the engine by means of the connecting rod.
