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Z94.8 Facility Planning & Design

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RACK SUPPORTED BUILDING STRUCTURE. A complete and independent load storage system in which the storage rack is the  basic structural system.

RADIO CONTROLLED. Motor-propelled units which are controlled by an operator by means of a remote radio transmitter.

RADIO FREQUENCY (RF) IDENTIFICATION. An electronic method of assigning a piece of information to a product, process, or person with a transponder (tag) and reading the information with a reader.

RAIL. A horizontal load-carrying member running the full depth of the rack. Within each bay, two rails are used at each level.

RAIL AND SUPPORT HEIGHT. The combined height in inches of the guide rail and support bracket in a drive-thru rack.

RAIL GUIDE. A device attached to the rail for alignment of pallets.

RAIL PROJECTION. The horizontal dimension from the post to the outside edge of the rail assembly.

RAIL SPAN. The length of rail between the centerline of the uprights.

RAIL SUPPORT. A member between the rail and the upright post.

RAIL SUPPORT CONNECTOR. A device connecting the rail support to the post.

RAIL TIE. A member used to connect a pair of rails at or near the end of the rail assembly.

RAM. An attachment comprising a cantilever member, extending horizontally forward from a lift truck carriage, which is used to handle hollow core, cylindrical or similar loads, such as rugs, coils, pipe, etc.

RAMP. A sloping aisle or roadway connecting two different levels, generally not exceeding 45 degrees.

RANDOM STORAGE POLICY. A storage policy in which an incoming item is stored in any available location.

RATED LOAD (CRANE). The maximum load the equipment is designed to handle safely.

REACH TRUCK. A self-loading truck, generally high lift, having load-engaging means mounted so it can be extended forwardly under control to permit a load to be picked up and deposited in the extended position and transported in the retracted position.

RECEIVING. The function of accepting, recording, and reporting merchandise into a facility.

RECEIVING AREA. The space reserved for the receiving function.

RECIPROCATING BEAM CONVEYOR. One or more parallel reciprocating beams with tilting dogs or pushers arranged to progressively advance objects.

REMOVABLE POSTS (PORTABLE METAL STACKING RACKS). A load-carrying column that is inserted at each corner of the base by a simple mechanical means. A nesting target or plug is permanently affixed to the top of the column.

REPLENISHMENT. Re-stocking primary picking locations from reserve storage locations.

RESISTORS, BALLAST (CRANE OR CARRIER). Electrical resistance added in the motor circuit to provide reduced starting current for gradual acceleration.

RESTRICTED ARTICLES (AIR TRANSPORT). Certain articles (explosives, for example) which are either excluded from air cargo entirely or subject to stringent requirements on volume and packaging. A restricted articles tariff, giving full details on such articles, is published by Air Tariff Publishers, Inc. for the airlines.

RETARDER. Any device used to slow the rate of travel of bulk material or objects on a conveyor.

RETARDING CONVEYOR. Any conveyor used to retard the rate of movement of bulk materials, packages or objects where the slope is such that the conveyed material tends to propel the conveying medium.

REUSABLE CONTAINER. A container intended for multiple cycles of use.

REWAREHOUSING. Rearrangement of supplies from one storage area to another within the same storage activity.




RIBBON FLIGHT. A conveyor screw flight proportioned to provide a space between it and the internal supporting pipe or shaft when mounted thereon.

RIBBON FLIGHT CONVEYOR SCREW. A conveyor screw in which the conveyor screw flight is of the ribbon flight type.

RIBBON FLIGHT SCREW CONVEYOR. A screw conveyor having a ribbon flight screw. (See SCREW CONVEYOR.)

RIDER TRUCK. A truck that is designed to be controlled by an operator from either a standing or sitting position.

RIGHT ANGLE STACK AISLE WIDTH. The aisle width necessary to place in location the maximum dimension load perpendicular to the aisle with a given vehicle.

RIGID BACK-TO-BACK TIE. A member connecting back-to-back racks, maintaining a constant space and adding rigidity to the complete assembly.

RIGID CONTAINER. A container with components permanently assembled.

RIGID POST (PORTABLE METAL STACKING RACK). A load-carrying column permanently attached to the corner of the base. A nesting target or plug is permanently affixed to the top of the column.

ROLLER CONVEYOR. A series of rollers supported in a frame over which objects are advanced manually, by gravity, or by power.

ROLLER CONVEYOR, HERRINGBONE. A roller conveyor consisting of two parallel series of rollers having one or both series skewed.

ROLLER CONVEYOR, HYDROSTATIC. A section of roller conveyor having rollers suitably weighted with liquid to control the velocity of objects being conveyed.

ROLLER CONVEYOR, LIVE. A series of rollers over which objects are moved by the application of power to all or some of the rollers. The transmitting medium is usually belting or chain.


ROLLER CONVEYOR, SKEWED. A roller conveyor having a series of rollers skewed to direct objects laterally while being conveyed.

ROLLER CONVEYOR, SPEED-UP. A powered roller conveyor operating at a higher speed than its feeder to create space between unit loads.

ROLLER CONVEYOR, SPOOL TYPE. A roller conveyor in which the rollers are of conical or tapered shape with diameter at ends of roller larger than at the center.

ROLLER CONVEYOR, SPRING MOUNTED. (1) A roller conveyor where the ends of each roller are supported on springs. (2) A section of roller conveyor supported on springs.

ROLLER CONVEYOR, TROUGHED. A roller conveyor having two rows of rollers set at an angle to form a trough over which objects are conveyed.

ROLLER SPIRAL. An assembly of curved sections of roller conveyor arranged helically and over which objects are lowered by gravity.

ROLLER TABLE. A table with a surface consisting of a series of rollers.

ROLLING CHAIN CONVEYOR. A conveyor consisting of one or more endless roller chains on which packages or objects are carried on the chain rollers. The speed of transportation is double that of the chain speed.

ROLLING RESISTANCE. Force, resisting tractive effort, caused by friction losses. It is preferably expressed in pounds, or as pounds per thousand pounds of vehicle weight, or as a percent of gross vehicle weight.

ROLLWAY SKID. A roller conveyor with brakes to prevent the rollers from turning except in one direction.

ROOM. An enclosed space within a building.

ROPE AND BUTTON CONVEYOR. A series of buttons or flights attached to an endless wire rope or cable for the purpose of conveying or retarding the movement of bulk material or objects along a stationary trough.

ROTARY SWITCH. A switch with a movable inner frame containing straight and/or curved sections of track. The inner frame can be rotated to align these sections of track with other tracks for routing carriers from one track to another.

ROTARY TABLE FEEDER. A rotating horizontal, circular table to which material flows from a round bin or hopper opening and from which it is discharged by a plow.

ROTARY VANE FEEDER. A rotor of cylindrical outline with radial, spaced plates or vanes rotating on a horizontal axis for controlling the flow of bulk materials.

ROTATOR. A power-actuated attachment which provides rotary motion about an axis that is usually perpendicular to the face of the carriage.

ROUGH TERRAIN TRUCK. A wheeled type truck designed primarily as a fork truck, but which may be equipped with attachments. This truck is intended for operation on unimproved natural terrain as well as the disturbed terrain of construction sites.

ROW. A continuous series of racks.

RUNNERS. Integral rails or skids on which demountable containers are supported.

RUNNING SHEAVE. A sheave which rotates as hook is raised or lowered.

RUNWAY. The rails, beams, brackets and framework on which the crane operates.

RUNWAY CONDUCTORS. The conductors mounted on or parallel to the runway which carry current to the crane.


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