An insulated solid or stranded conductor, or two or more such conductors laid up together, each provided with its own insulation. The insulated conductor or conductors may have an overall protective covering.
Armoured: A cable provided with a protective wrapping of metal tapes or wires.
Flexible: A cable, the conductors, insulation and covering of which afford flexibility.
A rectangular duct in the form of a tray in which cables or busbars travel through a building.
A deeply recessed panel sunk in a ceiling or soffit.
A watertight box used for surrounding work involved in laying a foundation of any structure below water.
A convexity upon an upper surface (e.g. beam, bridge, lintel).
A hood or cover.
a) A projecting beam supported at one end, or a large bracket for supporting a balcony or cornice.
b) two bracketlike arms projecting toward each other from opposite piers or banks to form the span of a bridge making what is known as a cantilever bridge.
The uppermost part on top of a piece of work.
bricks which are specially shaped for capping the exposed top of a wall.
A building that is structurally complete but otherwise unfinished.
The producing of work or construction (either temporary or permanent) in wood other than joinery.
Woven fibre floor covering used for decorative and acoustic purposes.
An inclined timber joist used to support the centre of the steps in the flight of a wooden stair.
Covered with other materials, generally of a better quality or finish.
(See also 'FIRRING PIECES'.)
Any opening finished with jambs and trim, but without the finished material for the opening (e.g. Doors).
A window with the sash hinged vertically to the frame.
Schedule of times or dates at which payments for resources of all kinds are received and made, and the amounts.
To replace some plastic material in a previously constructed form
CAST IN SITU
Concrete cast or poured in its permanent position in prepared forms (e.g. concrete steps, hearth slabs, floors, beams, lintels).
A structural steel beam or girder either rolled section or built up, with portion of the web cut out to lighten the structure and provide a passage for building services.
Fortification of a building by means of battlements
A wheel, or set of wheels, set in a swivel frame attached to the base of a piece of furniture and portable machines.
The water-proofing of cracks or joints in or between any materials.
Resonance of enclosed body of aif between rigid walls connected by a narrow opening to surrounding space.
A hollow wall,usually consisting of two brick walls erected a couple of cms apart and joined together with ties of metal.
The overhead internal lining of a room
Acoustic: Ceiling materials to absorb of reflect sound or prevent sound transference to adjacent areas.
A ceiling springing from the walls with a curve;
A ceiling carried up partly on the underside of the rafters.
Suspended or False: A ceiling which is suspended from and is not in direct contact with the floor or roof construction above and generally used to conceal services. (See also 'FIRRNG PIECES'.)
The joists, usually acting as a tensile roof member and which support the overhead interior lining of a room of serving as floor joists for a storey above.
A fitting from which a lamp may be suspended.(see also 'CORD, drop'.)
A finely ground inorganic material forming, by the addition of the appropriate quantity of water, a binding paste capable of hardening both under water and in air and of binding together granular material.
Obtained by crushing and burning limestone in kilns, the resulting clinker being finely ground with gypsum and with the addition of various aggregates is used for many purposes (e.g. concrete, mortar).
Rubber Latex: A jointless cement floor which is flexible, due to its rubber content. The aggregate may be marble or other stone chippings or cork or wood chips which can be ground and buffed like terrazzo.
White: A white Portland cement used for white or colored surface finishes and for white or colored mortar (e.g. snd finish, stucco, terrazzo).
A temporary framework support under an arch during its construction.
Heating of building from a central source either by circulating hot water or steam through pipes and radiators, or warm air through ducts.
CENTRE TO CENTRE
See ON CENTRE
The bonding together of a stone wall by the use of a built-in chain or iron bar.
A wooden moulding around the wall of a room at chair-back height, to protect the wall against damage.
Length of string thoroughly coated with chalk dust, used to strike a straight guide line on a material.
Line which is made with a chalking line.
To take off the edge or arris of any material to a small depth at an angle of about45°.
A chamfer that does not extend the full length of the work.
A type of weatherboard.
An open drain.
A metal section.
The process of scorching or burning a surface for construction purposes.
A rough groove or recess cut into a masonry wall for water pipes, conduit, etc.
In timber, the separation of the fibres along the grain forming a fissure, but not extending through the piece from face to face.
The cutting of a timber member to a specified depth and width suitable to receive another timber member.
The middle horizontal member of a double-hung window (the lower rail of the top sash and the top rail of the lower sash).
A moulding for holding the bottom sash of a double-hung window in place in a window frame.
A structure, generally of brick or stone, containing a passage through which the smoke and waste gases from a fire or furnace may escape.
The arch above a fireplace opening.
The wall containing the fireplace flue or flues, extending between floor and ceiling.
A cover for a chimney which may incorporate a device to improve the draught with an exit opening to leeward.
Metal of composition material placed around a chimney shaft to protect the roof against rainwater, or snow.
The passage provided in the chimney structure as an outlet for smoke or fumes.
The top of a chimney,
A covering for a chimney to prevent rainwater from entering the flues.
The walls or piers on each side of a fireplace opening or stove recess.
That part of a chimney that projects above the roof.
The chimney directly above the fireplace where the walls are brought close together to increase the draught.
Sheet material used in joinery made of compressed woodchips and resin.
An inclined or vertical trough or tube through which articles are passed from a higher to a lower level.
A type of concrete made from Portland cement mixed with clean well-burned coal cinders as coarse aggregate.
CIRCUIT - Electrical
A path of electric current.
A switch suitable for opening a circuit automatically under predetermined conditions.
A stairway having steps which radiate from a common centre.
A space for the movement of people, goods and vehicles within a building.
CISTERN - Flushing
Small tank to contain water for flushing a water closet pan initiated by operation of a chain, ever or other mechanical device.
The board to which the cistern in a water closet is a attached.
CIVIL ENGINEERING WORKS
Works comprising a structure other than a building and its associated site works such as a dam, bridge, road etc. or an operation such as dredging, dewatering, soil stabilization.
Any material used to face a building or structure.
CLASS OF . OCCUPANCY
The classification of the building as to use.
A unit with removable plate or plug in plumbing or other drainage pipes for cleaning out extraneous material.
Free from all visible defects and imperfections.
A small piece of timber fixed to larger, as a bearing block.
A fitting with projections at top and bottom used to secure chains and ropes (e.g. for clothes lines, verandah blinds).
The portion of a muti-storey room extending above the single storey height containing windows for lighting and ventilation purposes.
CLERK OF WORKS
Supervisor of a building project, employed by the architect or the building owner, to ensure that the architect's plans are followed accurately and that workmanship is of an appropriate quality.
A stairway which is completely closed on both sides by walls.
CLOSED STRING STAIRS
Stairs in which the treads are not visible in a side view of the staircase.
A shaped brick showing as a quarter of a brick, used to preserve the bond in a course.
A device used to automatically close a door.
A small room or compartment e.g. watercloset
A nail, usually galvanised, with a flat circular head.
Similar to a wood screw except that the heads are square or hexagonal so that they can be turned by a spanner. They are often used to connect metal plates to timber.
Crushed stone of gravel used in reinforced concrete.
One application of a material e.g. paint, plaster.
Sunken panels formed in ceilings,vaults and domes.
A joint having one member notched so as to form a cog and the other member notched to fit over the cog.
COLD AIR DUCT
In heating and ventilation systems, a pipe which carries cold air.
COLD CATHODE LAMP
An electric lamp consisting of a fluorescent glass tube with no filament. Alternating current passing through the vacuum in the tube gives no visible light but emits other radiation, which on passing through the glass is changed into visible light by the fluorescence of the glass.
Refers to the short section of outer piping used to join two lengths of pipe and may also refer to collar flashing fitted to roofing penetrations.
See TIE - collar
That part of a plumbing system which receives the discharge of all soil and waste stacks within the building and conveys into the sewer.
Free standing vertical load bearing member. See ENGAGED COLUMN
Concrete footings, reinforced with steel rods, used as supports for columns.
Cross sectional shapes of columns.
Arrangement of columns
Various designs for columns.
COMBINATIONS WITCH AND PLUGSOCKET
A fitting at the terminal of a circuit that has the switch and plug socket combined as an integral unit.
A sheet copper container for hot water which is combined with a feed tank.
COMBINED EXTRACT AND INPUT SYSTEM
A ventilating system which combines the extract and the input system.
That which burns.
A conception used in the design of air-conditioning systems relating to a zone of comfortable working conditions. This varies from place to place but generally is within the following range: Temperature 22°C ± 3°C. Humidity 50° +/- 10°/o.
In masonry a bond in which every sixth course approximately is a headed course and the intervening courses are stretcher courses.
See BRICKS – common
See RAFTER – common
Building material formed as a distinct unit for which length, width and thickness dimensions are specified (e.g. bricks, timber).
See LENGTH, THICKNESS, WIDTH)
Plywood containing an insulating of other special purpose sheet such as asbestos of cork. These boards are used for building cold stores, refrigerators, and other structures which require high insulation and may be metal-faced both sides as a vapour barrier.
Different materials in conjunction (e.g. reinforced concrete in situ topping over a precast prestressed concrete floor beam, or brickwork carried on a concrete or steel beam).
Mortar made of cement, lime and sand. See also MORTAR.
A built-upbeam or a beam composed of two or more members.
An assembly of veneer impregnated with liquid resin and bonded under high pressure.
Wood whose density and strength have been increase by pressure (.g. high density plywood).
Ring or gasket of rubber on PVC in pipe joints placed in compression between two fittings to maintain a seal.
A gutter which is constructed in such a manner that it cannot be seen.
Method of heating a building by the installation of heating units concealed in floors, ceiling, or walls.
A load applied to a localized part of a structural member.
Concrete is a conglomerate artificial stone. It is made by mixing in certain proportions cement, water, sand and crushed stone, gravel of other inert material. The chemically active substance in the mixture is the cement which unites physically and chemicallyn with the water and, upon hardening, binds the aggregates together to form a solid mass resembling stone.
Bush hammered: Removal of surface laitance by a mechanical hammer.
No Fines: Concrete composed of coarse aggregate,cement and water (no sand).
Light Weight: See SLAG CONCRETE
Reinforced: Concrete reinforced or strengthened by the inclusion of steel mesh, bars, rods.
Sand Blasted: Removal of surface laitance by a stream of sand applied to the surface at high pressure.
A concrete building block.
Metal, fibreglass or timber formwork into which concrete is poured to a predetermined shape.
Beads or drops of water which accumulate on the inside of the exterior covering of a building, when warm, moisture-laden air, from the interior, reaches a point (due to cooling) where the temperature no longer permits the air to sustain the moisture it holds.
The thermal conductance of a building material of a given thickness is the amount of heat in watts which passes through one square metre of it in one hour under a temperature difference of 1°C between the two faces. For the conductance the temperatures are measured on the face of the material, for the U-value they are measured in the air beyond it. For this reason, the U-value is always lower than the conductance of the same wall by an amount corresponding to the surface resistance.
CONDUCTIVITY (K value)
The thermal conductivity of a substance is the amount of heat in watts passed through an area of 1 square metre1 metre thick in one hoer under a temperature difference of 1 C between the two sides. For constructional materials as a whole there is a roughly proportional relationship between conductivity and density.
See also U-VALUE, CONDUCTANCE
CONDUCTOR – bare or uninsulated
A conductor not covered with insulating material. See INSULATED.
Protective casing for materials (e.g. electrical cables).
Areas within buildings for meetings mainly at executive level. Sound privacy and high speech intelligibility is generally required.
A skylight or lantern built up from straight glazing bars and flat panes of glass. It is shaped like a many-sided Pyramid.
Split ring-steel circular connectors with toothed or plain edges used in the fabrication of built up timber components such as trusses.
Shear plate-used to connect timber to steel, giving added strength to bolted connection, circular connectors are most common.
The process of assembling materials and defecting a structure
The medium in which a building is built e.g. wood, steel, or masonry.
Joint which occurs because of the sequence of construction, unlike an expansion joint.
A key used by the contractor to operate locks during construction. The lock mechanism is changed on completion of the work.
Those cables included in the portion of the electrical circuit between the consumer's terminals and the main switchboard.
The ends of the electrical conductors situated upon any consumer's premises at which the supply of energy is delivered from the service line.
A term applied to a structural member having three or more supports, or extending over two or more panels, e.g. continuous beam.
The outline revealed by across-section.
Lines of uniform elevation marked on a map
Working Drawings, Specification and details which form part of the formal contract between the Principal and the Contractor.
One who agrees by written agreement or contract to supply materials and perform certain types of work for a specified sum of money.
See DIMENSION, Controlling
See PLANE, Controlling
See ZONE, Controlling
When a fluid is warmed it expands, its density decreases, and it rises, its place being taken by denser, cooler fluid. This is known as convection of heat and is the reason why air moves about in rooms when there is no draught.
See DIMENSION, Co-ordinating
See FACE, Co-ordinating
See PLANE, Coordinating
CO-ORDINATION - Dimensional
The application of a range of restated dimensions to the sizing of building components and assemblies for their design and fabrication and to the buildings incorporating them. (See ASSEMBLY, COMPONENT
Modular: Dimensional co-ordination using the basic module (100mm), multimodules, sub-modules and a modular reference system. See MODULE, SYSTEM, Reference
The seam, or juncture, between moulded pieces in which a portion of one piece is cut away to receive the moulded part of the other piece.
The capping or covering at the top of a wall.
In building, a form of glazing in which panes of glass are separated by a copper strip on the edges of which small flanges of copper have later been formed to retain the glass. Also called COPPERLITE GLAZING.
A projection from a wall, either isolated or continuous, usually loadbearing.
CORD – drop
Twisted insulated electric wires connecting a lamp to a ceiling rose.
Flexible: A flexible electric cable no conduct or of which exceeds4.5 mm' in cross-section.
CORE- of a cable
An electrical conductor with its insulation, excluding any protective covering.
Granulated cork which has been compressed and baked to form slabs for flooring or insulation.
Any cross piece which diverts, transmits, or resists the pressure of a load.
A joint where two pieces of timber cross each other formed by cutting away half the thickness of each piece so that one piece will fit into the other and both pieces will lie on the same plane.
CROSS WALL CONSTRUCTION
Structural system in the form of walls, relieving or releasing leads from external walls.
CUL DE SAC
An access street with a blind end usually in the form of a turning space for vehicles.
Reject or castout.
A socket joint formed between two small pipes in the same line, by opening out the end ozone pipe to receive the tapered end of the other. The joint is then made firm by fitting the space surrounding the lapped ends with molten solder. See 'PIPE, Socketed'.
A wall plate which carries a dome at the springings.
The centre joint of one side of a curb roof. Also called a knuckle joint.
See MANSARD ROOF
Treatment of concrete or cement rendering to facilitate hardening.
A non-load bearing external wall.
A capping usually of cast iron to protect the head of a pile which is to be sunk into the ground with a pile driver.
CUT-OUT (Fusible Cut-out)
A device for opening an electric circuit in the event of overloading, by the fusion of a specially designed part.
Displacement or oscillation of sound expressed as unit of frequency hertz (Hz). Normally ear responds to 20-28Hz to 20 KHz.