FSG 54 Prefabricated Structures and Scaffolding

Prefabricated Structures and Scaffolding
Supply Items Included in Federal Supply Group 54
INSTRUMENT SHELTER,METEOROLOGICAL

An inclosing and supporting structure housing and exposing meteorological instruments. It is designed to allow free air circulation and to protect against direct solar radiation.

BUILDING,PREFABRICATED,READY-CUT

A structure constructed of metal and/or wood studs, joists, rafters, siding and other parts fabricated to predetermined shapes and sizes at the factory and shipped knocked down and packaged. Designed for quick erection or dismantling and adapted for various uses.

BUILDING,PREFABRICATED,PANELIZED

A structure constructed of metal and/or wood, prefabricated into assembled panels of specified dimensions. Designed for quick erection and dismantling, and adapted for various uses. Excludes SHELTER-CONTAINER, EXPANDABLE; and SHELTER, EXPANDABLE.

BUILDING ADDITION,PREFABRICATED,READY-CUT

A partial structure, constructed of metal and/or wood, made up of unassembled ready-cut materials. Designed for attaching to a building for an additional room and/or storage space.

BUILDING,PREFABRICATED,SECTIONAL

A completely fabricated metal and/or wood structure, consisting of two or more sections. Each unit is marked according to drawings and bundled separately. After arrival at building site, units are assembled and connected to each other to form a building. Parts are so fabricated that, once assembled, this building may be dismantled in the forms of units or panels and transported and reassembled at another site.

PANEL,BUILDING,PREFABRICATED

A portion of, or a complete wall, ceiling, roof or floor of a prefabricated structure produced at the factory according to standardized specification. These panels consist of a frame being faced on one or both surfaces with an exterior covering. Panels may include windows, doors or frames for same, wiring, piping or insulation.

WINDOW,METAL

A metal frame with integral crossbars, or a fixed or movable metal sash, used to close an opening in the wall of a building or watercraft and to admit light and/or air. It may be glazed. Excludes WINDOW, MARINE&#59; WINDOW, VEHICULAR and PORTLIGHT.

SCREEN,WINDOW,METAL

A fixed or movable barrier for the aperture of a window, composed of a metal frame and wire cloth. It is used to provide ventilation and to bar the passage of insects.

CASE,SHELTER

BUILDING AND EQUIPMENT,PREFABRICATED,SPECIAL PURPOSE

A complete unassembled section structure equipped with facilities for air conditioning, heating, and electricity, including the units necessary to produce each. Also, includes work benches, hoists, winch, exhaust fan, hand tools for building erection and other miscellaneous items. Excludes SHELTER-CONTAINER, EXPANDABLE; and SHELTER, EXPANDABLE.

SUPPORT,INSTRUMENT SHELTER

A support specifically designed for supporting and positioning a meteorological instrument shelter.

BUILDING UNIT,PREFABRICATED,READY-CUT

A partial structure or unit of a sectional building. These units consist of two types, namely, end units and center units.

END WALL,BUILDING,PREFABRICATED

The end section, consisting of the necessary panels, to close one end of a prefabricated structure. The section is produced according to drawings and specifications and shipped knocked down, usually in pairs. Does not include BUILDING UNIT, PREFABRICATED, READY-CUT.

CHAMBER,AIR LOCK,PORTABLE

A skid mounted, compartmented, wood structure constructed by assembling members fabricated to predetermined shape and sizes, shipped knocked down and packaged. It has one open end that is equipped with an accordion type canvas diaphragm which forms an airtight joint when fitted to the entrance or exit of a pressurized protective shelter. The other end is equipped with a tight fitting entrance door. It may be fitted with a shower. It is used as a disrobing chamber during atomic, biological, and chemical warfare.

GROUND CLOTH

A prefabricated, textile item specifically designed to be spread over the ground to provide a clean, dry, protective surface. It may be spread inside a tent or prefabricated structure to provide a flooring, or under specific types of equipment. It may be equipped with lifting handles. Excludes TARPAULIN; DROPCLOTH, PAINTER'S; and COVER (as modified).

SHELTER,INFLATABLE,TRANSPORTABLE

An impermeable fabric, single-walled, modular structure of a predetermined shape, supported by skeletal positioned air inflated members, designed for the protection of personnel/equipment from the environment. It is capable of air transportability. The structure may be expanded by additional modules and supporting assemblies.

ARM,DOOR STOP

A device made of metal designed to be attached to a door at one end and a door post on the other end. When the arm is extended it holds the door open.

COMMAND POST SYSTEM,MODULAR

A group of items consisting of map boards, a fluorescent light set, a heater, a surface wire ground system, and canvas for either a stand-alone tent or to be complexed to either a shelter or a tract command post. The tents are modular by design and are capable of being complexed either end to end, side to side, or side to end.

ROD ASSEMBLY,ADJUSTABLE

A long slender implement, adjustable in length, used to support a standard intergrated command post, it may be fitted with hardware.

LEG ASSEMBLY,TUBULAR

A tubular shaped device for use in conjunction with one or more similar items to form the leg support of a standard integrated command post system shelter. Itmay have a foot, pins, clamps, couplers or other attachments at one end for a base or connection.

SHELTER,LIGHTWEIGHT MAINTENANCE ENCLOSURE

A flexible, portable shelter designed for the protection of personnel/equipment from the environment. It is designed to be supported by lightweight rigid frame work. It is equipped with the capability for transporting by air, land or sea. It may include lighting, electrical systems and environmental contol connections. The shelter requires minimum site development and no specialized set-up equipment.

SHELTER DOME,PREFABRICATED

A structure constructed of aluminum or magnesium tubular sections of predetermined shapes and sizes and shipped knocked-down and packaged. Includes liner of coated plastic. Designed for quick erection or dismantling and adapted for various uses. The unit is completely air transportable, either before or after assembly.

UTILITY AREA SHELTER SYSTEM

A multi-functional, portable, modular construction shelter, designed for the protection of personnel, as a maintenance facility for rotary or fixed wing aircraft and tactical vehicles. It may also be used for logistics support, staging bases, general warehouse areas, and other applicatons requiring protection from various environmental conditions. It is designed to be supported by a lightweight, rigid framework. It is designed to be transported in all shipping configurations (land, air, sea, and rail). It may include lighting, electrical, ventilation, heating/air conditioning, and anchor systems as well as environmental control connections, structural exterior weather barrier fabric, interior insulation kit, and shelter erection/installation kit.

BUILDING,SPECIAL PURPOSE

A complete structure. May be permanent or relocatable. Designed to support mission essential equipment such as meteorological stations, radio set and repair equipment, electrical display units, radar sets and/or the like. Does nt include heating and cooling units but does accommodate them. For prefabricated units that include heating, cooling, and electrical, see BUILDING AND EUIPMENT, PREFABRICATED, SPECIAL PURPOSE.

SHELTER,FIXED SITE

A rigid, non tactical shelter designed for protection of personnel/equipment from the environment and equipped for the capability of transporting by air, land or sea for permanent installation at the users location. It may include leveling devices, lighting, electrical systems and environmental control connections.

INSULATION,CHEMICAL-BIOLOGICAL

An item composed of fiber, plastic foam, or synthetic material(s) in various shapes and sizes. It is designed to replace or add additional insulation to chemical biological shelters. It may contain a vapor barrier or a fabric treated surface. It may include mounting holes.

SHELTER,EXPANDABLE

A rigid, portable shelter designed for the protection of personnel/equipment from the environment, with sliding, folding and/or accordian fold walls, floor(s) and ceiling(s) which permits the expansion of the structure beyond that required for transporting. It is equipped with the capability for transporting by air, land, or sea. It may include leveling devices, lighting, electrical systems, and environmental control connections. The shelter requires minimum site development and no specialized set-up equipment. Excludes BUILDING, (as modified).

PARTS KIT,PORTABLE SHELTER

SHELTER,NONEXPANDABLE

A rigid, portable shelter designed for protection of personnel/equipment from the environment, and equipped for the capability of transporting by air, land, or sea. It may include leveling devices, lighting, electrical systems, and environmental control connections. For flexible wall shelters, see TENT; and Air Supported Structures. Excludes BUILDING, (as modified).

SHOE,JACK-SUPPORT

An item of various materials and shapes, designed to create, enhance, or secure a supporting surface of a JACK (as modified) or SUPPORT (as modified) and the like. It can be installed temporarily or permanently under the material to bear for some maintenance operations, lifting, handling and the like.

MODIFICATION KIT,SHELTER

An item or group of items used to modify a shelter.

HOUSING,FOOT BOLT

An item designed to enclose and support the FOOT BOLT ASSEMBLY.

HINGE,ENDWALL,CARGO DOOR

An item designed to be mounted to a section of shelter to provide a means by which the door is attached to the system.

FOOT BOLT ASSEMBLY

An item with a housing to enclose and support shafts, foot bolts, springs, pins, and the like for the support of cargo doors of shelters.

INSTALLATION KIT,SHELTER

A collection of mounting/holding hardware used to install fixtures, components or equipment to prepare a shelter for various operational requirements or role.

PAN,LEVEL,ENDWALL

An item designed to level sections for SHELTER, EXPANDABLE and the like.

CURTAIN,VENT,SHELTER

An item designed for air intake for sections of the SHELTER, EXPANDABLE and the like.

FLOOR,PORTABLE SHELTER

CONFIGURATION KIT,SHELTER

A collection of items, not all having the same basic name, may consist of furnishing and/or equipment required for quick deployment of a shelter.

SIDEWALL ASSEMBLY,SHELTER

A wall used on the side of an expandable shelter.

TUBE ASSEMBLY,SUPPORT STRUT

An item consisting of a tube with handle plates welded on its sides. The tube has a rectangular cross-section. It is part of a support strut used on an expandable shelter.

FAIRING,SHELTER WALL

An item consisting of different materials designed for mounting on a shelter. The item may be in sandwich construction. Excludes DOOR, ACCESS.

HOUSING,CHAIN BOLT

A part designed to surround and/or enclose a shaft, in addition to aligning moving parts to the cargo door assembly, expanding shelter and the like.

HOUSING,LATCH PAN ASSEMBLY

A housing designed to accommodate and support component parts of a latch and the like.

EQUIPMENT KIT,NONEXPANDABLE SHELTER

A collection of items such as a fan cover, ground anchor assembly, equipment container, floodlight, and the like which are used to make the applicable item operational.

PARTS KIT,SHELTER,RIGID WALL

A group of parts used for the repair of a rigid wall shelter or the replacement of rigid wall shelter parts.

SHELTER,NONEXPANDABLE,INTEGRATED

A rigid wall shelter integrated with electrical components and wiring, environmental control unit, power generation equipment, gas particulate filter unit and the like. It is designed to be mounted on high mobility multi-wheeled vehicle heavy variant and used to house standardized integrated command post system communication electronic equipment.

REPAIR KIT,SHELTER

A group of items used to provide replacement of worn out parts for expandable and nonexpandable shelters.

SHELTER,NONEXPANDABLE,LIGHTWEIGHT,UTILITY

A basic rigid wall structure with personnel door, a door access ladder for when shelter is mounted on a vehicle, drain plug in floor and all inserts for attachment of vehicle hardware and attachment of a bootwall. May have a tunnel across the bottom front of shelter with opening on each side. Intended for use as a highly mobile shelter for housing communication electronic equipment and the like.

REUSE CONTROL CENTER,MOBILE

A complete, portable, explosion proof unit for total control, distribution and accountability for all hazardous materials.

FILTER,SAND,GENERATOR SET SHELTER

A device mounted on a shelterized generator set and designed to prevent sand particles from entering inside the shelter. Excludes: FILTER, PARTICULATE.

INSULATION,CHEMICAL-BIOLOGICAL

An item composed of fiber, plastic foam, or synthetic material(s) in various shapes and sizes. It is designed to replace or add additional insulation to chemical biological shelters. It may contain a vapor barrier or a fabric treated surface. It may include mounting holes.

BIVOUAC SYSTEM,MODULAR,MILITARY UNIT

A collection of subsystems designed to accomodate a military unit. Included are facilities for billeting, latrine, shower, fuel/water/power distribution, waste management, transportation aids, and system support services. Transportation of the system can be achieved by rail, sea, aircraft, and/or vehicle. Additional modules of appropriate configurations may be added as required to form a desired size base camp.

LAVATORY UNIT,TRANSPORTABLE,FIELD

A transportable shelter which may consist of one or more toilets, hand-washing devices, urinals, showers, LAVATORY; SINK, WASHROOM, and the like, as we ll as all necessary plumbing and electrical equipment. Excludes TOILET, ENCLOSED UNIT, PORTABLE.

BIVOUAC SUBSYSTEM,MODULAR,MILITARY UNIT

A group of items which perform operational function within a BIVOUAC SYSTEM, MODULAR MILITARY UNIT.

INSTALLATION KIT,MILITARY UNIT MODULAR BIVOUAC SYSTEM

A collection of items consisting of pipes, hoses, couplings, electrical cables, electrical connectors and miscellaneous hardware, designed to install all the subsystems (as modules) of a BIVOUAC SYSTEM, MODULAR, MILITARY UNIT in the field.

PONTOON BOAT

An open type watercraft designed for use as one of the floating supports for a raft or temporary military bridge.

PONTOON FLOAT

An air and watertight vessel or a crate type float containing buoyancy units, fabricated of metal, wood, rubber and/or fabric. It may be used singly or in conjunction with other floats to provide a floating support for a raft, bridge or pier. Excludes PONTOON, SECTIONAL.

PIN,PONTOON BOAT

A metal item consisting of a single rod, one end of which has been pointed and the other end bent to form a handle. Specifically designed to be used in pairs and to attach two PONTON BOAT together.

BAG,BAILEY BRIDGE PARTS AND TOOLS

A container made of duck, coated cloth or similar flexible material with carrying handles/straps. It is designed for transporting and/or storing of bailey bridge parts and tools. Excludes BAG, TOOLS AND SPARE PARTS.

REPAIR EQUIPMENT,ALUMINUM FLOATING BRIDGE

BRIDGE,FIXED

A structure erected over a waterway, ravine or road, for the passing of persons, animals, railroads or vehicles. It is supported on stationary piers. Excludes BRIDGE, SUSPENSION.

BRIDGE,FLOATING

A structure erected over a waterway, for the passing of persons, animals or vehicles. It is supported on pontoons instead of on stationary piers.

BRIDGE,SUSPENSION

A bridge supported by chains, ropes or wires, which usually pass over high piers or columns at each end, and are secured in the ground beyond. Excludes BRIDGE, FIXED.

BRIDGE CONVERSION SET,FIXED BRIDGE

Necessary tools and equipment that provides supports for multiple span for bridges.

BRIDGE ERECTION SET,FIXED BRIDGE

Necessary tools and equipment, such as angles, beams, bolts, channels, derricks, frames, hoists, jacks, trolleys, winches and wrenches, for the erection of fixed bridges.

BRIDGE ERECTION SET,FLOATING BRIDGE

Necessary tools and equipment for the erection and maintenance of bridges.

BRIDGE ERECTION SET,SUSPENSION BRIDGE

Necessary tools and equipment for the erection of the suspension footbridge or the light equipment suspension bridge.

CABLEWAY SET,AERIAL

A power operated device that provides transportation for short hauls over ground surface that is concave in an upward direction or over a single ravine or river.

FERRY CONVERSION SET,RAFT

A collection of items such as tackle blocks, chain hoists, travelers, rope and similar items, which, when combined with a raft, the complete unit forms a ferry to transport light vehicles and equipment across streams and rivers.

TRAINING SET,FLOATING BRIDGE

A group of items used to instruct troops in the erection of floating bridges.

TRAMWAY SET,AERIAL

A power operated device that provides transportation for persons, material, etc. It is supported by a tower and is used for the crossing of rivers, marshes, ravines and to ascend or descend mountain ranges.

BRIDGE,FIXED AND FLOATING

A combination of a BRIDGE, FIXED and BRIDGE, FLOATING.

TRESTLE,RAILWAY

A braced framework of strong posts or piles and crossbeams, for supporting a bridge, the track of a railway, and the like.

CARRIER,BRIDGE LAUNCHING

A self-propelled armored vehicle mounted on a tank chassis. It is designed and equipped for transporting and launching of tank assault bridges.

RAMP,LOADING,RAFT

A ramp which is used for loading raft. Designed for emergency rescue of personnel assembling floating bridges and the like. Excludes RAMP, LOADING, VEHICLE.

DECK UNIT,BRIDGING

A rectangular shaped platform, either of wood and/or metal construction used to form the road surface of certain bridges or rafts. See also Chess Bridges.

PANEL,BRIDGE

A frame work which is the basic part from which girders and piers of a bridge can be constructed.

PACKING TIMBER,BRIDGE

Timber of specific lengthe and cross section for use as packing in bridge erection and/or construction as required.

PIN,PANEL,BRIDGE

A specially designed cylindrical item, having a tapered end, used for securing bridge panels end to end. May be headed or headless.

PIN,BRACING MEMBER,BRIDGING

A specifically designed cylindrical item used to secure bracing members of a bridging structure. Do not use if a more specific name applies. For threaded items see BOLT (as modified).

CURB,BRIDGE

An item fitted longitudinally along the outer edges of a roadway constructed on a bridge. May also be used for securing the roadway.

BRACING MEMBER,BRIDGING

An item, used in bridging construction, designed to give rigidity to the structure. It may be subjected to compressive and tensile stresses.

DRAWBAR,BRIDGE BAY

An item which is used for the erection and disassembly of a bridge.

HEAVY ASSAULT BRIDGE

A heavy assault bridge capable of providing responsive horizontally launched bridging in support of heavy combat/tactical maneuver forces. It consists of a turretless Abrams tank chassis, a bridge, and launcher. It can span 24 meter gaps and support a MLC 70 loading crossing at 16 kph. It is launched from under armor in 5 minutes and retrieved in 10 minutes. It is operable by a crew of two, and has near equal mobility and survivability with the Abrams tank force.

ARM,STRUCTURAL,BRIDGE

A pivotal device of various shapes attached by pins, bolts, or the like. May have bearings and/or bushings at pivot points. Used as a structural member in deployment and/or support for bridging (e.g. assault bridges, drawbridges, or the like).

RETAINER,FLOAT,BATTLE FRONT CROSSING VEHICLE

A device generally tubular in shape and open along the length, with hooks or a faxation plate. It is used to hold float rubber supports to maintain the float on the frame of a vehicle crossing.

BRIDGE LAUNCHING,TRUCK MOUNTED

A truck, specifically designed and equipped for transporting and launching of assault bridges.

LOCKING RAMP MODULE,FLOATING BRIDGE

A modular ramp section of a BRIDGE FLOATING which are mounted on each side of a modular ramp and allow to lock all its elements in positions up or down .

HANDRAIL

An item which can be supported by balusters or attached to a wall, partition, and the like.It can be used as a guard and/or to be grasped by the hand as a support.

PARTS KIT,HYDRAULIC SYSTEM

A parts kit used to repair hydraulic systems. Do not use this name if a more specific item name exists.

FLAME ARRESTER,VENTILATION-EXHAUST

A device used to prevent passage of flame through a ventilating duct while air is flowing.

TANK SET,PETROLEUM STORAGE AND DISPENSING

TANK,ASPHALT STORAGE

A tank with steam coils and a covering deck with a centrally located manhole. See also TANK, LIQUID STORAGE.

TANK,FABRIC,COLLAPSIBLE

A receptacle constructed of either canvas or nylon material and of various shapes. It may or may not be furnished with a cover and/or ground cloth. Staves and guy ropes are usually furnished to enable assembly of the item. It is used for the storage of bulk liquids, such as gasoline, oil or water. Tank may be equipped with pipe fittings. Excludes tanks installed as an integral part of another system, trailer or truck mounted tanks designed for transporting liquids, and DRUM, FABRIC, COLLAPSIBLE.

TANK ASSEMBLY,FABRIC,COLLAPSIBLE

A group of items designed to provide all the essential material for the hasty assembly of a temporary storage container, which consists of the following type items, fabric collapsible tank, hose and valves, quick disconnect couplings, grooved type couplings and valves.

TANK,PRESSURE

CAP,VENT,FUEL STORAGE TANK

A cap designed to be mounted on the vent piping of a fuel storage tank to allow the unimpeded flow of gases in and out. It prevents the admission of rain, dirt, and other foreign matter to the tank. Excludes BREATHER.

FILL BOX,FUEL STORAGE TANK

A water-tight device designed to be connected indirectly, by means of a pipe, to an underground fuel storage tank. It is used as a means of filling and/or gaging contents of tank. It is designed to be mounted flush with the surface of the ground, roadway, or the like.

REPAIR KIT,COLLAPSIBLE FABRIC TANK

An assortment of items, such as nylon-coated fabric, with application accessories, for use in field repair of TANK, FABRIC, COLLAPSIBLE.

GROUND CLOTH

A prefabricated, textile item specifically designed to be spread over the ground to provide a clean, dry, protective surface. It may be spread inside a tent or prefabricated structure to provide a flooring, or under specific types of equipment. It may be equipped with lifting handles. Excludes TARPAULIN; DROPCLOTH, PAINTER'S; and COVER (as modified).

TANK,LIQUID STORAGE

A receptacle or structure of sturdy construction and of various shapes, the top of which may be open or closed, used for storage of bulk liquids such as gasoline, oil or water. The tank may be equipped with pipe fittings. Excludes tanks fabricated for use as an integral part of another system and trailer or truck mounted tanks designed for transporting liquids. See also TANK (1), ASPHALT STORAGE and TANK, HOT WATER STORAGE.

TERMINAL,TACTICAL PETROLEUM

A facility designed and packaged in such a way that it can be rapidly erected at most any location for the receipt, storage and dispensing of liquid fuels, specifically diesel, motor gasoline, and aviation jet fuel. Fuels can be received from a pipeline or from tanker-trucks. It can dispense fuels directly to user vehicles or to fuel transport vehicle or return fuel to the pipeline for downstream distribution. It can be disassembled and moved to another location or returned to an equipment storage facility.

PARTS KIT,FLAME ARRESTER,VENTILATION-EXHAUST

A parts kit consisting of a group of parts used for repairing or replacing worn of damaged parts of FLAME ARRESTER, VENTILATION-EXHAUST.

LAGOON ASSEMBLY,RETENTION,COLLAPSIBLE TANK

An item generally rectangle parallelepiped in shape, open at the top. It consist of a tarpaulin, a frame support, accessories, a repair kit and a container. It is used as a tank retention in case of hazardous leakage.

TANK SECTION,FLUID

One or more like or unlike sections of a fluid tank which when assembled compose a complete tank. Either or all sections may have provisions for the attachment of fittings, filler cap, mounting brackets, or the like. It is used primarily in conjunction with fuel, hydraulic, oil, or water systems.

BLADDER,COLLAPSIBLE FABRIC TANK

A flexible item designed to be inserted into a TANK,FABRIC COLLAPSIBLE. It is primarily used to accommodate and preserve drinking water.

LADDER,EXTENSION

A ladder consisting of two or more ladders joined near the ends of the parallel sides by locking and guide devices to form a single unit. It is adjustable to varying lengths and requires a means of support.

LADDER,STRAIGHT

A ladder of fixed length and requires a means of support. The sidepieces (rails) may be tapered or flared near the bottom.

STEPLADDER

A self-supporting ladder of fixed size consisting of front and rear sections which are hinged at the top. It is usually constructed with steps on the front section only but may be constructed as a trestle type unit with identical front and rear sections utilizing either steps or rungs.

FORM,CONCRETE PAVING

Fabricated steel rails with braces and anchor pins, used for retaining concrete and as tracks for supporting concrete paving and finishing equipment.

STAGE,SCAFFOLD PLANK,SUSPENSION

An item fabricated from LUMBER, SOFTWOOD, SCAFFOLD PLANK, by attaching a cross member (cleat) on the bottom of each end, which projects beyond the longitudinal sides of the plank. It is designed to be suspended along sides of ships, buildings, or the like to support workers and their tools, and materials, during construction and repair operations. The cleats may be pivoted to swing parallel to the plank for easy stowage.

DOWEL UNIT,CONCRETE PAVING JOINT

An item fabricated from steel rods. It consists of two separate identical sections, each having a side frame and a fluted center rod to which dowels are welded. In assembling the two sections as a unit, the free end of each dowel of each section engages a loop at the top of the side frame of the other section and the center rods assume positions parallel to each other with a narrow space between. The center rods, in addition to serving as supports for the dowels, also serve as retainers for an expansion joint filler strip or a contraction joint steel plate when a strip or plate is installed in the space between them. It may be provided with tubes for installation on the dowels to provide clearance for expansion. It is specially designed for installation in the concrete at the contraction and/or expansion joints of highway or other concrete pavement to minimize the load transfer problems caused by heavy wheel loads.

LADDER,SAFETY STEP

A ladder having flat antiskid steps mounted on an integral noncollapsible supporting frame. It may have handrails and casters. Excludes MAINTENANCE PLATFORM; STAIRCASE, AIRCRAFT BOARDING; LADDER (as modified); and STEPLADDER.

SCAFFOLDING,LEG

Fixed or adjustable stilts designed to elevate the working person's position while maintaining mobility. Designed to aid construction workers when performing high tasks.

SCAFFOLDING,UPPER SECTION

SCAFFOLDING,BASE SECTION

GUARD RAIL SECTION,SCAFFOLDING

OUTRIGGER,SCAFFOLD

LADDER,EXTERIOR SERVICE,RADOME

STEP,LADDER

A rigid, metallic or nonmetallic prefabricated item which forms a LADDER (as modified) when fitted together with similar components on a stringer, sidepieces or other support. It may include a nosing, an antiskid covering, mounting hardware and the like. Excludes STEP, JACOB'S LADDER.

FORM,CONCRETE FORMING

An item or group of items designed to act as a mold in the creation of preformed architectural elements from cement by containing the cement in a fixed shape during the hardening process.

STRINGER EXTENSION,LADDER

An item required for the leveling of a ladder. Uneven ground and abutment faces of different heights can thus be corrected. The item can also have special mounting devices.

LADDER,THREE-WAY COMBINATION

A portable ladder capable of being used as a stepladder, or as a single ladder, or extension ladder. It may be capable of being used as a tressle ladder or a stairwell ladder or a scaffold. Its components may be used as single ladders.

TUBE,SCAFFOLDING

A metal tube specifically designed for use in the erection of a temporary framework such as scaffold in buildings, racks, stages, trestles or the like.

COUPLER,SCAFFOLDING

A metal item of various shapes designed to couple two tubes together at any angle desired. It is specifically designed to be used in the erection of a framework such as a scaffold in buildings, stages, trestles, and the like. It can be used as bracing. It may be an in-line coupler, right angle coupler, swivel coupler, and the like.

TOWER

An open frame structure which is high in proportion to its lateral dimensions and has more than a single footing or mounting base. It is normally used to support such items as antennas, loudspeakers, water tanks, cabins, and the like, which may be furnished. Excludes TOWER, DOUBLE STRUCTURE, SURVEYING and MAST.

TOWER SECTION

An item that is especially designed to be readily assembled together with other sections to form a tower. Does not include platform or connecting plates and angles.

TOWER,DOUBLE STRUCTURE,SURVEYING

An open framework consisting of an inner and outer structure, mutually independent of each other. The inner structure is designed to support a surveying instrument while the outer structure contains a platform for support of personnel using the instrument. See also TOWER.

ANCHOR,SURVEYING TOWER

An anchor designed to secure a triangulation tower(s), or the like, in an erected position.

PLATE,BASE,TOWER SUPPORT

An item the shape of which is essentially that of a flat disk or rectangle and the thickness of which is small in proportion to either its length or breadth. It has a centrally located hole or depression to or in which may be welded a pipe dowel which may include bolt holes. It is used as an individual base for one of the supporting legs of a tower.

TOWER SECTION SET

An item consisting of a grouping of like or unlike tower sections in an unassembled form. It does not include mounting hardware or accessory items.

TOWER ERECTION SET,TOPOGRAPHIC

Necessary tools and equipment such as axes, crowbars, block and tackle, saws and wrenches for the erection of a triangulation tower. This set may also include the tower to be erected.

TOWER SUPPORT GROUP

A collection of items, for the support of a tower.

LATRINE BOX,PREFABRICATED

A partially assembled prefabricated structure of plywood reinforced with hardwood strips. It consists of a base sill with four hinged side panels and a top panel with holes that are covered with lids fitted with spring hinges and metal stays. It may be furnished with angle iron bars for connecting to an adjoining box. It is designed to be assembled in the field and installed over an excavation.

BLEACHER,PORTABLE

An item consisting of a frame, seats and footboards designed for quick erection for the seating of spectators.

REVETMENT,PREFABRICATED

A collection of parts which are designed for quick erection and dismantling and designed to protect aircraft and/or equipment from bomb shrapnel and or strafing. The assembled item may consist of parallel walls with the space between them to be filled with dirt or some other material. The assembled item will be open on one end and will not have a roof. For prefabricated items without an open end and/or with a roof see BUILDING, PREFABRICATED as modified.

PANEL,REVETMENT

A portion of, or complete wall of a prefabricated revetment produced at the factory according to standardized specification. These panels consist of a frame of metal and/or wood being faced on one or both surfaces with an exterior covering.

INSTALLATION AND EQUIPMENT KIT,SHELTER

A collection of different pieces of furniture and/or equipment, such as air conditioner, heater, electrical system, as well as communication facility (wire) as required in the completion of a SHELTER, EXPANDABLE, or SHELTER, NONEXPANDABLE.

SCREEN,PLATFORM-RACK

An item made of framing uprights and cross-members with a lattice or mesh between them. It may be straight or curved to conform to the shape of a combat-vehicle turret and/or maintenance platform. In usage, it prevents cargo, tools and equipment and/or personnel from falling. Excludes FENCING, WIRE.

PANELING MATERIAL,BUILDING

An item of bulk metallic coil with varying dimensions specifically designed to be corrugated and/or perforated in a specifically designed forming machine, producing panel sections on site for the construction of building systems.

PANEL,FLOOR SECTION,TECHNICAL

A particle board panel made of chip-like particles generallky covered with a vinyl resin tile on its upper side and a metallic plate on its lower side. It is designed to be mounted on a frame to constitue a technical raised floor which allows utility shafts running under it.

HANDRAIL

An item which can be supported by balusters or attached to a wall, partition, and the like.It can be used as a guard and/or to be grasped by the hand as a support.