the upper area of ​​the stairs does not count

[shem4bfual]

new introduction of the the size of the physical volume of construction index, which is widely used in infrastructure projects, statistics, design, construction and project budget and other areas, in terms of construction cost management plays a very important role in housing construction pricing is one of the key indicators . To help you learn and use standard, I am here to interpret their own understanding of the content of what standard, something wrong, please correct me criticism.
Code contains general principles, terminology, calculation of the three parts of the provisions of the construction area and for the Regulation of instructions. Are explained together. The first part of the general principles expounded
normative purpose, scope, construction area of ​​principles to be followed. The second part cites 25 term, the provisions of the gross floor area of ​​buildings involved in the relevant parts of an explanation or definition of the term. The third part of the calculation of the provisions of a total construction area of ​​25, including the building area calculation, calculation methods and the scope of the construction area does not count. Provisions that regulate the provisions of the construction area of ​​the specific contents, methods to do the detailed definition and description, in order to accurately use the rules and methods. Here to talk about the specifications focus on the calculation of floor area requirements.
First, housing construction in the main part of
1, single-storey building area
single building shall be above the plinth structure of its wall area of ​​the external level. Single-storey height of 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Le Pin is the external walls of buildings and outdoor water contact parts of the ground or scattered thickening of the wall (Figure 1); height is ground to the roof interior (the lowest) the vertical distance between the structure elevation.


Figure 1
single-storey plinth with those of local floor, partial floor of the second floor and above floors, retaining structure should be commensurate with the level of area of ​​the external envelope without the envelope structure should be floor level area of ​​the structure. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Envelope is enclosed building space around the walls, doors, windows and so on.
2, multi-storey buildings multi-storey buildings
different storey building area demarcation shall be calculated separately. The first floor should be above the plinth structure of its wall area of ​​the external level; the second floor and above floor level should be outside the area of ​​the exterior structure. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Here I will be the algorithm referred to as Story is two floors (the floor or ground to) the vertical distance between the structure elevation; where the top layer of the story is its floor to the roof (lowest point) the vertical distance between the structure elevation.
3, a single (multi) layer slope roof buildings within the space
single (multi) layer of building space within the roof slope, when the design use when the site of its clear height should be calculated over 2.1m wide area; clear height of 1.2m to 2.1m in the site should be counted 1 / 2 area; clear height less than 1.2m should be calculation of the site area. Design does not use area should not be calculated. Here I will be the algorithm referred to as Clear height is the upper floor or ground floor (roof) at the end or the vertical distance between the underside of the ceiling. Figure 2: (1) of clear height 2.1m, should be fully calculated area.
4, underground construction, elevated levels
basement, semi-basement (including the corresponding import and export of a permanent roof) floor area, according to their external catchy (not including light wells, vapor barriers and external walls The protective wall) outside the lines around the level of area calculation. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Room below ground level the height of the outdoor ground level over the room clear height of 1 / 2 the basement; room to the outdoor ground plane below the height of the room clear height of more than 1 / 3 and not more than 1 / 2 semi-basement; permanent cover refer to planning approval by the permanent use of the cover design.


Figure 2 slope sloping roof space utilization
foot building overhead crane foundation layer and the deep layer of the construction area overhead, design and a retaining structure to be used, according to the level area of ​​the external envelope. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Designed to use the building envelope without lifting the foot elevated levels, according to their level of use of parts of area 1 / 2 calculation; design does not use overhead construction crane foot deep foundation layer and the elevated level, should not be counted area.


Figure 3 Schematic diagram of the basement
5, the building lobby, halls, corridors
hall building, hall floor by floor area calculation. Foyer, the hall features a winding corridor, the floor should be level area of ​​the structure. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Corridor is in the building lobby, hall, set in the floor or second floor above the back-shaped corridor.
6, the level of cross-linked buildings and Deformation
level of cross-linked high-span building structures should be outside the lines drawn were calculated floor area; its level of internal cross-connected, the movement joint should be counted in within the area of ​​low cross-section. (Figure 4)
deformation joints within the building shall be consolidated its natural level within the building area calculation.


Figure 4 Schematic diagram of the level of joint inter-plant
7, staircases, wells and buildings
indoor staircases, elevator shafts, sightseeing elevator shaft, extracts of wells, tube wells, ventilation exhaust shafts, garbage Road, with wall of the building's natural layer of the chimney should be calculated into the area within the building. Natural layer is defined as the floor, the floor structure of layered floors. In case of duplex building, its interior stairs shall be shared natural layer calculation area; the upper and lower split-level family room shared staircases, should be selected on the calculation of floor area of ​​the natural layer. (Figure 5)
8, the top of the building at the top of the building envelope
staircase, water tanks, the elevator room, etc., according to the level area of ​​the external envelope. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. No non-envelope calculation of area.
9, the walls of the building as a retaining structure shall be calculated wall construction area outside the lines. The outside of the building exterior wall insulation layer of the building, insulating layer should be calculated outside the line of building area.


Figure 5 room split-level section diagram
10, the external walls (envelope) with outward sloping
building envelope is not perpendicular to the horizontal plane and beyond the outer edge of the building floor, according to their floor surface area of ​​the external level. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. (Figure 6)
case of tilt of the wall to the building should be seen as sloping roof, the roof slope shall be calculated within the area of ​​space-related provisions.


Figure 6 Section of a Floor
Second, housing construction subsidiary part of the
1, pick the ##############, corridor, veranda outside the building envelope
challenges ##############, corridor, veranda, according to their level area of ​​the external envelope calculation. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Without retaining a permanent roof structure should be the level of the structure floor area of ​​1 / 2 calculation.
corridor traffic is the level of the building space; pick the ############## is the level of external walls of buildings singled out transport space; veranda is set in the bottom of the eaves of the building level of traffic space. (Figure 7)


Figure 7 Schematic veranda
2, elevated corridor between the building envelope
the elevated corridor, according to their level area of ​​the external envelope. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Without retaining a permanent roof structure should be the level of the structure floor area of ​​1 / 2 calculation. No permanent roof overhead does not count the corridor area. Elevated corridor is between the building and building, second floor above the floor or set up specifically for the level of traffic corridors.
3, the door fighting, window
building envelope outside the door fighting, floor windows, according to their level area of ​​the external envelope. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area. Without retaining a permanent roof structure should be the level of the structure floor area of ​​1 / 2 calculation. Bucket is in the building door entrances and exits of the building transitional space, separated from, wind, cold and so on (Figure 8); floor window is the foundation of outstanding landing outside the window wall.
4, balcony, awning
building balcony, whether concave balcony, pick balcony, enclosed balcony, open balcony, according to the level of projected area of ​​1 / 2 calculation. Balcony is available for users of the construction activities and space for drying clothes.
awning, whether it is column-free awnings, a column awning, independent column awning, outside the structure of the outside line to the exterior structure of the line width exceeds 2.1m who, according to their level of structural panels awning projected area of ​​1 / 2 calculation. Width of 2.1m and not counted within the area. Awning is set to import and export of the upper part of the building from the storm, awning.
5, has a permanent roof
outdoor stairs outdoor stairs, should be the level of the building projected area of ​​the natural layer of 1 / 2 calculation.
no permanent roof or awning can not be completely covered stairs, the upper area of ​​the stairs does not count, but the lower the upper staircase stairs permanent cover may be regarded as the lower area of ​​the stairs should be calculated (ie, a layer of small operators .)
6, stage lighting control room envelope
a stage lighting control room, according to their level area of ​​the external envelope. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area.
Third, special housing construction
1, three-dimensional three-dimensional stacks
warehouse, warehouse, parking garage, a layer of non-structural layer shall be calculated, structured layer structure of floor area shall be calculated separately. Storey 2.2m or more in the whole area should be calculated; storey less than 2.2m should be calculation of 1 / 2 area.
2, has a permanent roof stadium stands in the stadium bleachers without envelope, according to their horizontal projection area of ​​the roof 1 / 2 calculation.
space under the stadium bleachers, when the design to be used (Fig. 9), the clear height of more than 2.1m should be calculation of the whole area of ​​the site; clear height of 1.2m to 2.1m in the site should be counted 1 / 2 area; clear height less than 1.2m should be calculation of the site area. Design does not use area should not be calculated. Figure 9: (1) of clear height 2.1m, All areas should be calculated.
Note: This so-called , and single or multi-storey buildings should be calculated area of ​​the relevant provisions.
3, stations, vehicles (goods) shed, gas stations, toll stations
without a permanent roof structure of the platform enclosure, carport, shed, gas stations, toll stations, etc., should be the top cover horizontal projected area of ​​1 / 2 calculation. At the site, carport, shed, gas stations, toll stations are equipped with a retaining structure of the control room, barracks and other areas according to relevant provisions of the calculation.
four, not counting the floor area calculation of the range of other non-building area
range (in addition to the exception mentioned above):
1, building access, including arcade, Guo Jielou the bottom. Channel is defined as a road building through the building and set the building space; floor balcony is part of the sidewalk across the street on the building; Guojie Lou is a road through the architectural space of the building.
2, pipeline equipment within the building mezzanine.
3, separated by single-room building, stage and backstage hanging curtain, set the bridge, pick sets and so on.
4, building the operating platform, loading platform, the platform installation or tank.
5, escalators, moving walkways.
6, roof water tanks, racks, arbor, patio, outdoor swimming pool.
7, Le Pin, with Qiang Zhu, stack, stairs, wall plaster, decorative surfaces, Xiangtie block material surface layer and set the building external wall for decoration decorative walls, air conditioning, outdoor resting board (box), bay window, components, accessories, and the building is not connected to pass the decorative balcony, pick ##############.
8, for the maintenance, fire and other outdoor steel staircase, ladder.
9, independent of the chimney, flue and drain the oil (water) tank, gas tank, water towers, oil storage (water) tank, silos, bridges, underground civil air defense channel, subway tunnels.