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An expansion joint in masonry to allow movement due to expansion and contraction.



Related Terms

EXPANSION JOINT

A device in piping designed to allow relative movement between two lengths of pipe.

BALL-AND-SOCKET JOINT

A joint in which a member ending in a ball is joined to a member ending in a socket so that relative movement is permitted within a certain angle in all planes passing through a line. Also known as ball joint.

STERNWAY

The reverse movement of a vessel. See astern

WEEP

A term usually applied to a minute leak in a boiler joint which forms droplets (or tears) of water very slowly.

HYDRAULIC ACTUATOR

A device for converting hydraulic energy into mechanical energy, pressure into linear movement or rotation.

HYDRAULIC MOTOR

A hydraulic actuator of rotary type. Has a cylindrical cartridge with several hydraulic cylinders which rods linear movement converted into shaft rotation. Direction of shaft rotation depends on sequence of working cylinders activation.

DREDGING (OF ANCHOR)

Moving of an anchor over the sea bottom to control the movement of the vessel

DRAGGING (OF ANCHOR)

Moving of an anchor over the sea bottom involuntarily because it is no longer preventing the movement of the vessel

LEEWAY

Lateral movement of the vessel to leeward of its course

SURGE

The sudden displacement or movement of water in a closed vessel or drum.

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