building terms n



NAIL, Spring-Head

A galvanized nail with a mushroom-shaped head used to fix corrugated iron sheets


NAKED FLOORING

The timbers of a floor before the boards are laid.


NAKED WALL

An unplastered, lathed wall.


NATURAL FOUNDATION

A foundation in soil which requires no preparation (e.g. the driving of piles to make an effective foundation for supporting the structure).


NEEDLE

A short stout timber,steel,or iron beam which is passed through a wall horizontally, to support the end of a shoring timber.


NEOPRENE

A flexible, durable plastic having properties suitable for use as washers, gaskets.


NET AREA

See AREA


NET BUILDING COST

The Net building Cost is the cost of the building consisting of the substructure, superstructure, finishes, fixed fittings and all services within and under the building unless otherwise stated including its proportion of preliminaries, but excluding all alterations, works and services external to the building, contingencies, loose furniture, loose equipment and all costs in connection with design, documentation and supervision.


NET BUILDING RATE

The Net Building Rate is computed by dividing the Net building cost by the Net Building Area (N.B.A.) stated to the nearest cent/Square Metre. See AREA.


NEUTRAL (Neutral Conductor)

The electric conductor of a 3-wires or multi-wire system that is maintained at an intermediate and approximately uniform potential in relation to the active conductors.


NEUTRAL ZONE

See ZONE, Neutral'.


NEWELS

Posts placed at top and bottom of flights of stairs to secure handrails, strings. (See also 'RAIL, hand,' 'STRINGS'.)


NICHE

A recess or hollow sunk in a wall.


NIGHT LATCH

A type of door latch, either rim or mortise, that can be opened from the outside only by a key, and from the inside by a knob or handle.


NOGGING

A horizontal piece of timber fixed between studs in a framed wall.


NOMINAL DIMENSION

See DIMENSION, Manufacturing


NON-BEARING PARTITION OR NONBEARING WALL

One which supports no vertical load except that of its own weight and merely defines spaces.


NON-COMBUSTIBLE MATERIAL

Material which does not burn or is incombustible, hence has fire resistive properties.


NORFOLK LATCH

A fastening for a door or gate, worked with the thumb, and provided with a handle for closing.


NORTH LIGHT ROOF

Pitched roof of unequal of equal slopes arranged by overlapping one pitch (glazed) to receive only light from the north. Southlight roof is similar.


NOSING

A projecting edge of any flat surface (generally rounded in section), e.g. the projecting edge of a stair tread.


NOTCHING

A joint formed by cutting a piece out of one timber equal to the thickness of the other timber across which it is placed.


NOTICES AND FEES

A notice is advice of intention to build or alter any building or service usually feqcired by the local authority. Fees are charges made by local authorities in connection with notices given.




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