Z94.8 Facility Planning & Design

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BACK CROSS BRACE. Diagonal members forming a rigid cross between the back post ties on the uprights at the end of the drive-in rack bay.

BACK DIAGONAL BRACE. A diagonal member connecting back post ties at the end of the drive-in rack bay.

BACK POST TIES. Horizontal ties across the last posts at the end of the drive-in rack bay.

BAG CONVEYOR, DOUBLE HELICAL. Closely spaced parallel tubes with right and left hand helical threads rotating in opposite directions on which bags or other objects are carried while being conveyed.

BALCONY. An elevated platform projecting from an exterior or interior wall, supported by columns or the wall, and enclosed by a railing.

BAR. The dark element of a printed symbol.

BAR CODE. An array of rectangular bars and spaces that are arranged in a predetermined pattern following unambiguous rules in a specific way to represent elements of data, which are referred to as characters.

BAR CODE DENSITY. The number of characters that can be represented in a lineal inch.

BAR CODE LABEL. A label that carries a bar code and is suitable to be affixed to an article.

BAR CODE READER. A device used to identify and read a bar code symbol.

BAR LENGTH. The bar dimension perpendicular to the bar width.

BAR WIDTH. The thickness of a bar measured from the edge closest to the symbol start character to the trailing edge of the same bar.

BASE (CANTILEVER RACK). The bottom member of a rack in contact with the floor and permanently affixed to the column. May also be affixed to the floor and used as a load bearing arm. In free standing racks, the base usually extends beyond the length of the arms. Purpose of the base is to prevent the rack from tipping over.

BASE (PORTABLE METAL STACKING RACK). Consists of structural cold-formed or tubed members joined together into a square or rectangular load carrying perimeter to which posts or sockets are attached, when required. The four basic styles are as follows:   Base No. 1 —base is constructed with two center structural members or intermediate framing inside the basic rack for allowing 4-way entry of light truck forks.   Base No. 2 —base is constructed with six structural members or intermediate framing for allowing 4-way entry for racks that are wider than the length of the lift truck forks.   Base No. 3 —base is constructed with X-type structural members or intermediate frame for 4-way entry of lift truck forks.   Base No. 4 —base is constructed without corner sockets, but with open style intermediate bracing for load only. This style for transportation by crane with special tongs or slings

BASE GUIDE RAIL. Member attached to the outside edge of the base and used to align a row or pair of complete frames. Used also as a truck guide.

BASEMENT. Any story having at least 1/2 of its volume below the adjacent finished grade.

BATCH PICKING. An order picking method in which an operator is responsible for picking multiple orders to completion in the same work cycle.

BATCH PROCESS. An industrial manufacturing method in which one or several units are produced at a time, in contrast to continuous process (q.v.).

BATTERY (BAT.)—AIEE (60.06.010). A battery consists of two or more cells electrically connected for producing electric energy. (Common usage permits this designation to be applied also to a single cell used independently. In the following definitions, unless otherwise specified, the term battery will be used in this dual sense.)

BATTERY-ELECTRIC TRUCK. An electric truck in which the power source is a storage battery.

BAY. (1) The space defined by a pair of upright frames, the overall depth, and the clear height between shelves. (2) A cubic space with limits normally defined by functional or physical constraints; as example:  Structural bay. The space defined by four columns.  Storage bay. The space defined by the size of a block of material stored within it.  Truck bay. The space defined by the area required to park a truck.  Service bay. The space defined by the area required to park and service a vehicle.

BAY MARKER. A marker either on the floor, overhead or on posts, numbered, and/or lettered to designate a bay in a storage area.

BEAM CLAMP. A type of suspension fitting used to support tracks from overhead structure.

BEAMS. A horizontal load-carrying member on each end of which is a connector used in tying together two upright frames.

BEARING BRACE. The member of an upright frame with full length floor contact.

BEARING PLATE. A metal plate affixed to the bottom of a post for load distribution, permitting lagging or bolting to the floor.

BELT CONVEYOR. An endless fabric, rubber, plastic, leather, or metal belt operating over suitable drive, tail end and bend terminals and over belt idlers or slider bed for handling bulk materials, packages, or objects placed directly upon the belt.

BELT CONVEYOR, CLOSED. Moving, endless, flexible belt, or belts, which may be formed into a tubular shape by joining of edges, and which are opened while in motion to receive load, closed to convey or elevate, and opened to discharge.

BELT CONVEYOR, FLAT. A belt conveyor in which the carrying run of the conveyor belt is supported by flat belt idlers or by a flat surface.

BELT CONVEYOR, MAGNETIC. An inclined belt conveyor operating over a slider bed containing permanent magnets for transporting ferrous metal parts against gravitational pull.

BELT CONVEYOR, MULTIPLE CORD. A belt conveyor composed of two or more spaced strands of Vee, double Vee, or round belts.

BELT CONVEYOR, MULTIPLE RIBBON. A belt conveyor having a conveying surface of two or more spaced strands of narrow conveyor belts.

BELT CONVEYOR, PORTABLE. A portable conveyor in which a belt is used as the conveying medium.

BELT CONVEYOR, TROUGHED. A belt conveyor with the conveyor belt edges elevated on the carrying run to form a trough by conforming to the shape of the troughed carrying idlers or other supporting surface.

BELT FEEDER. A belt conveyor adapted for feeder service. (See FEEDER; CONVEYOR TYPE FEEDER.)

BIDIRECTIONAL PATH. A material flow path over which material flow takes place in two opposite directions.

BIDIRECTIONAL READ. The ability to read data successfully whether the scanning motion is left to right or right to left.

BIDIRECTIONAL SYMBOL. A bar code symbol that permits reading in complementary (2) directions.

BILL OF LADING. A receipt given by the carrier or agent for goods received for shipment. (See STRAIGHT BILL OF LADING, ORDER BILL OF LADING.)

BINDER. A strip of burlap, heavy paper board, thin lumber or similar material placed between layers of containers to keep the stack together.

BIN STORAGE. An area of a plant or facility devoted entirely to loose item or open stock placement.


BLOCK. A storage term denoting a rectangular area within a facility or building in which items-objects are densely located, and in which only the exterior faces of the area may be conveniently reached.

BLOCKED SPACE (AIR TRANSPORT). A program of reduced rates and reserved space granted a shipper who assures a minimum of freight (15,000 lbs. a week, for example) between the same two cities for a given period (90 days, for example).

BLOCK, LEG OR COLUMN. Deck spacers used to make full four-way or all-way entry pallets.

BLOCK STACKING. The action of putting objects into a block pattern in a storage area up to five tiers in height.

BOOM. A cantilever member, with a load-carrying hook at the free end.

BOOM CONVEYOR. Any type of conveyor mounted on a boom.

BOOSTER CONVEYOR. Any power conveyor used to regain elevation lost in gravity roller or wheel conveyor lines.

BOTTOM DISCHARGE BUCKET CONVEYOR. A conveyor for carrying bulk materials in a horizontal path consisting of an endless chain to which roller-supported, cam-operated conveyor buckets are attached continuously.

BRACE. Stiffening member(s) connecting two posts in an upright frame, i.e., diagonal, cross, or horizontal.


BRIDGE PLATE. A plate, usually of metal, used to span the space between a freight car or truck and the loading dock.

BRIDGE RAIL. The rail supported by the bridge girders on which the trolley travels.

BUCKET CONVEYOR. Any conveyor in which the material is carried in a series of buckets. (See


BUCKET ELEVATOR. A conveyor for carrying bulk materials in a vertical or inclined path, consisting of endless belt, chain or chains, to which elevator buckets are attached, the necessary head and boot terminal machinery and supporting frame or casing. (See INTERNAL DISCHARGE BUCKET ELEVATOR; POSITIVE DISCHARGE BUCKET ELEVATOR.)



BUCKET LOADER. A form of portable, self-feeding, inclined bucket elevator for loading bulk materials into cars, trucks, or other conveyors. (See BUCKET ELEVATOR; PORTABLE CONVEYOR.)

BUILDING. A roofed structure for the shelter, support, or enclosure of persons or property.

BULK STOCK. Full and unbroken containers of supplies. Bulk storage can involve piles of raw material (stone), tanks (oil), silos (sand), and similar on-site methods of containing homogeneous commodities.

BULK STORAGE. The area within a facility or warehouse  devoted to the placement of large, greater than loose-issue quantities of items, or in which each single item is too large to be placed in a bin storage location.

 BUMPER PAD. Molded or laminated cushions fastened to a dock to prevent damage to it from a truck bumping against the dock while parking.


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