GB/T 50353-2005 Code for Measurement for Construction Area of Building
1. General principles
1.0.1 The Code is designed to normalize the area measurement for industrial and civilian construction engineering and unify measurement methods.
1.0.2 The Code is adequate for the area measurement of newly-built, extended or remodeled industrial and civilian construction engineering.
1.0.3 Construction area measurement ought to follow scientific and rational principles.
1.0.4 Construction area measurement ought to follow this code as well as be in compliance with current national standard specifications.
2.0.1 Storey height
The vertical distance between two floors or between the floor and the ground.
Floors storied by floor slabs and floor construction.
2.0.3 Empty space
Enclosed space formed by building deep foundation or sloping field construction overhead parts without backfill.
The horizontal transportation space of construction.
2.0.5 Overhanging corridor
The horizontal transportation space extended the external wall of buildings.
2.0.6 Eaves gallery
The horizontal space under the building bottom eaves.
The circle corridor established on the second floor or higher in the hallway and lobby of the building.
Construction transitional space in the passageway of buildings, with the function of compartment, air stopping and cold protection.
Construction space saved for roads passing through the building.
2.0.10 Corridor bridge way
Corridors built for horizontal transportation on the second floor or higher, between buildings.
The thicken part of the external wall and the outdoor floor or the wall connected with aprons.
2.0.12 Envelop enclosure
Walls, doors and windows enclosing the enclosed space.
2.0.13 Enclosing curtain wall
Curtain walls used as external walls, functioning in enclosing.
2.0.14 Decorative faced curtain wall
Curtain walls built out of walls of buildings for ornament only.
2.0.15 French window
Ground windows overhung wall foundation.
Enclosed space for used to take activities and air clothing.
2.0.17 View room
Enclosed space on top of building or extended the room, used for people to take a distance look or observe ambient conditions.
Awnings on top of entrances of buildings for preventing the rain and the sun.
The room ground level is more than 1/2 of the net height of room lower than the outdoor ground level and it is called basement.
The room ground level is more than 1/3 of the net height of room lower than the outdoor ground level and it is called semi-basement.
2.0.21 Deformation joint
A generic term of expansion joints (temperature joints), settlement joints and seismic joints.
2.0.22 Permanent cap
Caps permanently used after being planned or designed.
2.0.23 Bay window
Windows overhung external walls for illumination and beautification of the room.
Frontage buildings with floors riding astride the sidewalks.
Buildings with roads crossing enclosed space.