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Area

From Draftsperson.net

CIRCULATION AREA:

Total area of all enclosed spaces forming entrance halls, corridors, staircases, lift wells, connecting links and the like.

FLOOR AREA:

When applied to a building or storey, the floor area includes all the space capable of being used. It includes any roofed area, canopy, veranda or covered walkway, etc. Floor area is used in a number of different contexts in the BCA. It is therefore necessary to define each of these contexts: - In relation to a building—the sum of the areas of all storeys. - In relation to a storey—the floor area of the storey includes any enclosing walls. Where there is no enclosing wall in a part of a storey, those areas which may be used for storage, or other purposes, by occupants must be included as appropriate. It therefore includes any roofed area, including a canopy, verandah or covered way if it contributes to the functioning of the building. Internal walls, columns, shafts or the like are not deducted. - In relation to a room—the bounding walls determine the limits of the floor area. Internal walls, columns or the like are not deducted. - In relation to a fire compartment—the fire compartment may not be bounded by walls in all places. If this is the case and a roofed area contributes to the fire load, it should be considered as part of the floor area.

GROSS FLOOR AREA:

Total of all enclosed spaces fulfilling the functional requirements of the building measured to the internal structural face of the enclosing walls. Includes areas occupied by partitions, columns, chimney breasts, internal structural or party walls, stairwells, lift wells, and the like. Includes lift, plant, tank rooms and the like above the main roof slab. Sloping surfaces such as staircases, galleries, tiered terraces and the like should be measured flat on plan. Excludes any spaces fulfilling the functional requirements of the building which are not enclosed spaces (eg open ground floors, open covered ways and the like). Excludes private balconies and private verandas.

NET FLOOR AREA:

The actual occupied area not including the thickness of walls, partitions, columns, furred-in spaces, fixed cabinets, equipment, and unoccupied accessory areas such as corridors, stairways, toilet rooms, mechanical rooms and closets.

NET HABITABLE FLOOR AREA:

(Residential buildings only) Total area of all enclosed spaces forming the dwelling measured within the structural internal face of the enclosing walls. Includes areas occupied by partitions, columns, chimney breasts and the like. Excludes balconies, public access spaces, communal laundries, drying rooms, lift, plant and tank rooms and the like.

USABLE FLOOR AREA:

Total area of all enclosed spaces fulfilling the main functional requirements of the building (eg office space, shop space, public house drinking area, etc.)


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