15. Calculate the area of the door bucket
3.0.15 The door bucket should calculate the building area based on the horizontal area of the outer periphery of its enclosure structure. If the structural layer height is 2.20m or above, the full area should be calculated. If the structural layer height is less than 2.20m, 1/2 of the area should be calculated.
[Old Specification]
3.0.11 Floor-to-ceiling windows, door buckets, corridors, corridors, and eaves with enclosure structures outside a building should be calculated based on the horizontal area of the outer periphery of the enclosure structure. If the floor height is 2.20m or above, the full area should be calculated; if the floor height is less than 2.20m, the area should be calculated. If a permanent top cover or no enclosure structure should be calculated as 1/2 of the horizontal area of its structural base plate.
1. The door bucket is "the space between the two doors at the entrance and exit of the building". It is a fully enclosed space with a roof cover and an enclosure structure.
2. The door bucket is fully enclosed, and at least one side of the porch and awning are not enclosed.
16. Calculate the area of the canopy
3.0.16 The building area should be calculated based on 1/2 of the horizontal projection area of the roof panel; the building area with columns should be calculated based on 1/2 of the horizontal projection area of the structural plate; if the width of the outer edge line of the structural outer edge line of the column-free canopy to the outer edge line of the outer wall structure is 2.10m or more, the building area should be calculated based on 1/2 of the horizontal projection area of the awning structural plate.
[Old Specification]
3.0.16 If the width of the outer edge line of the canopy structure to the outer edge line of the exterior wall structure exceeds 2.10m, it should be calculated as 1/2 of the horizontal projection area of the canopy structure plate.
1. The awning refers to a building component that is set up above the entrance and exit of the building, protruding from the wall, and is separately established to block rainwater. The canopy is divided into columned canopy (including independent column canopy, multi-column canopy, column-wall mixed support canopy, wall-supported canopy) and columnless canopy (cantilever canopy).
2. The calculation area rules for column-free awnings and column-free awnings are different
(1) There is no limit on the width of the pole-free awnings; the building area can only be calculated when the width of the pole-free awnings is ≥2.10m. The width of the extruded width refers to the width of the outer edge of the canopy structure to the outer edge of the exterior wall structure. When curved or irregular, it is the maximum width (b in the figure).
(2) The columned canopy is not limited by the number of layers spanned, and the building area can be calculated. As shown in the picture on the right, the roof panel with column canopy spans the layer, reaching the elevation of the second floor roof panel, and the building area can still be calculated.
(3) The column-free canopy cannot cross the layer. If the roof slab spans the floor, the building area is not calculated.
3. Porch refers to a part that has no doors, walls on three or two sides, and has a board (or borrowed from the upper floor slab) to maintain it. The porch is divided into fully concave and semi-concave and semi-convex. When it is fully convex, it is classified as a wall supporting awning.
4. The roof cover is not set up separately, and the upper structural panels (such as floor slabs and balcony floor slabs) are used for cover. They are not considered as a canopy and the building area is not calculated.
5. Principle of judgment of mixing situations
judgment principle:
is based on the principle of not recalculating the area. When an attached building component has two or more functions and the calculated building area is different, the building area is only calculated once and the larger area is taken.
5. Mixed situation judgment
is divided into three situations:
1. The correct judgment method for the picture on the upper right: the second floor is a balcony, and 1/2 of the building area is calculated based on the bottom plate; the entrance and exit of the first floor is blocked by the upper balcony floor, and it is not considered a canopy and the building area is not calculated.
2. The correct judgment method for the picture below right: the lower part is a columned canopy, and 1/2 of the building area is calculated according to the top cover; the upper part is a terrace set on the canopy, and the terrace does not calculate the building area.
3. The correct judgment method for the picture on the right: the third floor part of
is the terrace on the roof, and the building area is not calculated. The second layer of
is the balcony within the main structure, and the full area is calculated according to the periphery of the structure.
The bottom floor is blocked by the upper balcony floor, and is not considered a canopy and the building area is not calculated.
17. Calculate the area of stairwells in three situations:
. First, the stairwells, etc. are on the top of the building
3.0.17. Stairwells, water tank rooms, elevator machines, etc. with enclosed structures are located at the top of the building. If the structural floor height is 2.20m or above, the full area should be calculated; if the structural floor height is less than 2.20m, 1/2 of the area should be calculated.
Second, stairwells, etc. on other floors of the building
3.0.19 The indoor stairs, elevator shafts, lifting wells, pipeline shafts, ventilation and exhaust shafts, and flue of the building should be incorporated into the natural floor of the building to calculate the building area. A lighting well with a ceiling should calculate the building area based on the first floor, and if the structural net height is 2.10m or above, the full area should be calculated; if the structural net height is below 2.10m, 1/2 of the area should be calculated.
1. This specification changes the "indoor stairwell" of the old specification to "indoor stairwell", including stairways forming shafts (i.e. indoor stairwells) and stairways without shafts (i.e. indoor stairways). It is clear that indoor stairways without shafts should also be calculated. For example, the building area should be calculated in the lobby of a building, the indoor staircase of a jump (or duplex) house, etc.
2. Indoor stairwell is incorporated into the natural floor of the building to calculate the building area.
Take the picture on the right as an example, with 15 floors above ground and 1 floor underground, so the stairwell is calculated based on 16 floors. The stairwell at the top of the building is also calculated according to Article 3.0.17.
3. The indoor staircase without a stairwell is calculated based on the horizontal projection area of the stairs.
4. Note when calculating the building area of indoor stairs: If the stairs are drawn in the drawings, regardless of whether the user takes care of themselves, the building area will be calculated based on the horizontal projection area of the stairs; if no stairs are drawn in the drawings and are only represented by the hole symbol, the area of the hole will not be deducted when calculating the building area.
5. Indoor public stairwells for leaping and duplex houses: leaping and duplex houses are calculated based on two natural floors; duplex houses are calculated based on one natural floor.
leaping-floor house refers to the house occupying two natural layers, and the bedroom, living room, living room, bathroom, kitchen and other auxiliary rooms are arranged in layers.
Duplex houses are conceptually a natural floor, but the floor height is higher than ordinary houses. Take out the mezzanine floor in part and arrange the bedroom or study room and other content.
6. When the natural number of layers on both sides of the indoor public stairwell is different, calculate based on the number of layers with more floors. The stairwell in the figure should calculate the building area of 6 natural floors.
7. Equipment pipeline layer, although not included in the number of layers described in the design, when calculating the stairwell building area, one natural layer should be calculated.
8. Use the building space at the lower part of the indoor stairs to calculate the building area repeatedly. For example, when using the bathroom or warehouse below the ladder section, the bathroom or warehouse will not calculate the building area separately.
9. The elevator shaft and sightseeing elevator shaft of this specification are merged and are uniformly called elevator shafts.
10, shafts (including elevator shafts, lifting wells, pipeline shafts, ventilation and exhaust shafts, and flue), regardless of inside and outside the building, the building area is calculated based on the natural floor, such as wall-mounted flue. However, independent flue does not calculate the building area.
11. Holeways (including indoor stairs, elevator shafts, lifting wells, pipeline shafts, ventilation and exhaust shafts, and flue) calculate the building area according to the natural floor of the building. If the natural layer structure is below 2.20m and the floor itself calculates 1/2 of the area, the corresponding shaft should also calculate 1/2 of the area.
12, Lighting Well
Due to the diversified building designs at present, the structure of the Lighting Well has also undergone great changes. This specification adds provisions for calculating the building area of a covered daylight well (capped daylight wells include daylight wells in buildings and basement daylight wells). The light well with a ceiling is shown below. Lighting wells without ceiling covers still do not count the building area. No matter how deep or how many floors of lighting are, only one floor is built. The picture on the right is a light-up of two floors, but only one floor is calculated.
3.0.20 Outdoor stairs should be incorporated into the natural floor of the attached building, and the building area should be calculated at 1/2 of its horizontal projected area.
[Old Specification]
3.0.17 Outdoor stairs with permanent ceilings should be calculated as 1/2 of the horizontal projection area of the natural floor of the building.
3.0.24 The following items should not be calculated in area:
7 Overhead corridors without permanent ceilings, outdoor stairs, outdoor steel stairs and ladders for maintenance, fire protection, etc.
This specification cancels the condition that outdoor stairs must have permanent roof covers to calculate the building area, and half of the building area should be calculated whether outdoor stairs have or have no covers.
[Example] The following figure is as an example. Assuming that the horizontal projection area of the stairs is S=10m2, calculate the outdoor stairs building area.
3. Use the building space at the lower part of the outdoor stairs to calculate the building area repeatedly.
18. Calculate the area of the non-vertical enclosure structure
3.0.18 The floor where the enclosure structure is not perpendicular to the horizontal plane should be calculated based on the horizontal area of the outer wall of its base plate surface. For parts with a net height of 2.10m or above, the full area should be calculated; for parts with a net height of 1.20m or above to below 2.10m, the 1/2 area should be calculated; for parts with a net height of 1.20m or below, the building area should not be calculated.
[Old Specification]
3.0.14 Buildings with enclosure structures that are not perpendicular to the horizontal plane and exceed the outer edge of the base plate should be calculated based on the peripheral horizontal area of the base plate surface. If the floor height is 2.20m or above, the full area should be calculated; if the floor height is less than 2.20m, the area should be calculated.
1. The old specification only stipulates the situation where the enclosure structure is tilted outward, and this specification applies to both inward and outward tilts. In terms of height division, this article uses "clear height", which is different from other normal flat floors divided by floor height, but is consistent with the division principle of sloped roofs. Since many architectural designs are currently pursuing novelty, odd and uniqueness, and the shapes are becoming more and more complex, we cannot clearly distinguish what is an enclosure structure and what is a roof. For example, the eggshell-shaped shell of the National Grand Theater, we cannot accurately say whether it is a wall or a roof. Therefore, in this specification, the same calculation rules are used for inclined enclosure structures and inclined roofs, that is, as long as the shell is inclined, the building area is calculated according to the net height.
Note:
Because the enclosure structure itself should calculate the building area, if we determine it is an inclined enclosure structure, the enclosure structure itself should calculate the building area, and if we determine it is a sloping roof, the roof structure does not calculate the building area. Therefore, although it is sometimes difficult to clearly distinguish the two, in order to achieve the principle of unified calculation, the following provisions are made for the inward inclination of the enclosure structure:
(1) The top floor of a multi- (high)-story building, the outside of the above-floor slabs are considered as roofs, and the area is calculated or not area is calculated according to the net height.
(2) Other floors of multi- (high)-story buildings, the inclined parts are considered as enclosure structures, and the enclosure structure at the bottom plate surface should be calculated for the full area.
(3) For single-story buildings, the calculation principle is the same as other layers of multiple (high)-story buildings, that is, the inclined parts are considered as enclosure structures, and the enclosure structure at the bottom plate surface should be calculated for the full area. How to calculate the single-layer oblique top if
?
2. The calculation rules of this clause are relatively complicated. The building area is calculated based on the "horizontal area of the outer wall of the base plate". This is because the enclosure structure is not vertical, it may tilt inward or outward. The horizontal area of the outer wall at each elevation may be different. Therefore, this specification defines it as the horizontal area of the outer wall at the structural base plate.
19. Calculate the balcony area
3.0.21 The balcony within the main structure should calculate the full area based on the horizontal area of its structure peripheral structure; the balcony outside the main structure should calculate the 1/2 area based on the horizontal projection area of its structural base plate.
[Old Specification]
3.0.18 All balconies of buildings should be calculated as 1/2 of their horizontal projected area.
1. The balcony is an outdoor space attached to the exterior wall of a building, equipped with railings or railings, and can be used for people to move around" (from the "Civil Building Design Term Standard"
The old specification is defined as "a building space for users to carry out activities and dry clothes". It is defined only from the use function. This specification clearly defines the essential properties of the balcony.
Balcony has three main properties:
1. The balcony is a building component attached to the exterior wall of the building;
2. The balcony should have railings, railings and other enclosure facilities or windows;
3. The balcony is an outdoor space.
This specification divides balcony into two categories: balcony within the main structure and balcony outside the main structure. The building area is different: the balcony within the main structure calculates the full area, and the balcony outside the main structure calculates 1/2 of the area.
The balcony in the two figures above are balconies within the main structure, and the full area should be calculated.
2. Judgment of main structure
(1) Brick-concrete structure: It is usually judged by the exterior wall (i.e., the enclosure structure, including walls, doors, and windows). The exterior wall is the main structure inside, and the exterior wall is the outside of the main structure outside.
(2) Framework structure: The column and beam system are inside the main structure, and the column and beam system are outside the main structure.
(3) Shear wall structure: The situation is relatively complex and divided into four categories.
①If the balcony is surrounded by the shear wall, it belongs to the main structure and the full area should be calculated.
②If both sides are shear walls, they also belong to the main structure and the full area should be calculated.
③If only one side of the opposite side is a shear wall, it belongs to the main structure and calculates half of the area. As shown in the figure below,
④ If there is no shear wall on both sides, it belongs to the main structure and calculates half of the area. As shown in the picture on the right above.
(4) When the shear wall and frame are mixed on the balcony, there are two situations:
① The corner column is a stress-bearing structure, and the foundation is the ground, and the balcony is within the main structure, and the total area is calculated.
② Angle columns are only shaped and have no foundation. If the balcony is outside the main structure, 1/2 of the area is calculated.
3. The roof cover is no longer a necessary condition for judging a balcony. Whether it has a cover or not, as long as the three main attributes of the balcony are met (attached to the exterior wall of the building, with railings or railings, and outdoor spaces where people can move around) should be classified as a balcony.
4. Regardless of whether the upper and lower layers are aligned, as long as the three main attributes of the balcony are met, it should also be classified as balcony
5. Other typical situations of the balcony
1. The balcony attributes are not changed due to its name
In the above picture, both balconies should be regarded as balconies surrounded by shear walls, belonging to the main structure, and the full area is calculated.
Second, the area of the balcony combined with the inside and outside of the main body is calculated separately.
In the picture above, part of the balcony is inside the main structure and part is outside the main structure. The building area should be calculated separately. Taking the outside of the column as the boundary, the upper part belongs to the main structure, calculates the full area, and the lower part belongs to the outside of the main structure, calculates 1/2 of the area.
Third, the area of the flower trough attached to the balcony can also be calculated.
The balcony in the picture on the right is surrounded by a shear wall, which belongs to the main structure and the full area should be calculated. Although the following part is designed as a flower trough, there is a sliding door between it and the balcony. The flower trough is connected to the interior, has the function of use, and meets the three main attributes of the balcony. Therefore, it should be regarded as a balcony and calculates 1/2 of the area (if the flower trough is not connected to the balcony, the building area should not be calculated).
It is the fourth, the platform connected to the balcony panel.
The structural base plate in the right picture has two uses. The part surrounded by the railing is a balcony, and the outside of the railing (left to the picture) is the equipment platform. According to regulations, 1/2 of the area of the balcony should be calculated, but the equipment platform is not connected to the balcony and the building area is not calculated.
When calculating the balcony building area, the front end is determined according to the outer edge of the structural base plate, and the left side is bounded by the outer edge of the railing. The equipment platform on the left side of the railing does not calculate the building area.
Fifth, the sky garden has balcony attributes.
The part marked as "Air Garden" in the picture above is based on the judgment principle of the balcony and belongs to the main structure. Whether it is closed or not, the full area should be calculated. In other projects, if a situation similar to a house entrance garden occurs, it is also judged according to the principle of the balcony.
6. To sum up, determining whether the balcony is inside or outside the main structure has nothing to do with the following four aspects:
(1) Is there a partition between the balcony and the indoor space;
(2) Whether the balcony is closed;
(3) Whether the balcony is heated;
(4) Where is the insulation layer made.
7. When the balcony is outside the main structure, the building area is calculated based on the structural base plate. At this time, regardless of whether the enclosure facilities are perpendicular to the horizontal plane, the building area is calculated based on the structural base plate, and the protruding part at the base plate should be included.
8. If the natural layer structure has a height below 2.20m, the balcony in the main structure will be calculated as the floor. However, the balcony outside the main structure will still be calculated by 1/2 of the area, and 1/4 of the area should not appear.
20. Calculate the area of the carport, such as carport, cargo shed, platform, gas station, toll station, etc. with roof cover and no enclosure structure, the building area should be calculated based on 1/2 of the horizontal projection area of the roof cover.
[Old Specification]
3.0.19 Car sheds, cargo sheds, platforms, gas stations, toll stations, etc. with permanent roof covers and no enclosure structures should be calculated as 1/2 of the horizontal projection area of their roof covers.
1. This specification is exactly the same as the old specification. Only the "permanent top cover" is changed to "top cover".
2. No matter the material of the top cover, no single or double columns, no rectangular columns or special columns, all the building area is calculated based on 1/2 of the horizontal projection area of the top cover
3. When there are other buildings under the top cover that can calculate the building area, 1/2 of the area is still calculated based on the horizontal projection area of the top cover, and the building area under the top cover will be calculated separately.
There are buildings below the gas station in the picture above, and their area is still calculated as A×B×0.5, and the building area will be calculated separately.
21. Calculate the exterior wall area of a curtain wall
. First, the situation of the curtain wall as an enclosure structure
3.0.23 Buildings with curtain wall as an enclosure structure should calculate the building area according to the outer line of the curtain wall.
[Old Specification]
3.0.21 For buildings with curtain walls as enclosure structures, the building area should be calculated according to the outer edge of the curtain wall.
Intelligent breathing glass curtain wall (double-layer curtain wall), the two curtain walls and the space between the two layers together form the exterior wall structure, so the building area should be calculated based on the outer edge of the outer curtain wall.
Second, the curtain wall is decorative.
Decorative curtain wall: A curtain wall that is set up as a decorative effect outside the building wall, and the area is not calculated.
22. Calculate the exterior wall area with insulation layer
3.0.24 The exterior insulation layer of a building should be calculated based on the horizontal cross-sectional area of its insulation material and incorporated into the natural floor building area.
The building area is only calculated by the insulation material itself (for example, when the benzyl beads on the outside, only the benzyl beads are considered by the insulation material), and the plastering layer, waterproof (wet) layer, adhesive layer (air layer) and protective layer (wall), etc. are not included in the building area.
that is, the building area of the building is still calculated first according to the exterior wall structure, the building area of the external insulation layer is calculated separately, and incorporated into the building area.
Specific calculation method is:
(1) The insulation layer is calculated by multiplying the net thickness of the insulation material by the length of the outer edge of the exterior wall structure according to the natural layer of the building.
(2) The length of the outer edge of its exterior wall is not deducted from doors and windows and components whose building area has been calculated outside the building (such as balcony, outdoor corridor, door bucket, floor-to-ceiling window and other components).
(3) When components that have calculated the building area outside the building (such as balconies, outdoor corridors, door buckets, floor-to-ceiling windows and other components) have insulation layers, the insulation layer will no longer be calculated for the building area.
Note: 1. "Horizontal cross-sectional area of insulation material" is based on the state where the insulation material is placed vertically and is calculated according to the thickness of the insulation material itself. When the enclosure structure is not perpendicular to the horizontal plane, it should still be calculated based on the thickness of the insulation material itself, rather than the inclined thickness, see the figure below.
2. The calculated building area of the outer insulation layer is based on the full laying along the height direction. If the laying height of the outer insulation layer such as the basement does not reach the full height of the floor, the insulation layer will not be calculated for the building area.
3. The composite wall (as shown below) does not belong to the external insulation layer of the exterior wall. It is regarded as an exterior wall structure as a whole. It is implemented in accordance with Article 3.0.1.
23. Calculation of deformation joint area
3.0.25 Deformed joints connected to the interior should be calculated according to their natural layers and within the building area. For buildings with high and low spans, when the high and low spans are connected internally, their deformation joints should be calculated within the low span area.
[Old Specification]
3.0.20 Buildings with high and low spans should be calculated separately based on the outer edges of the high span structure; when the high and low spans are connected internally, the deformation joints should be calculated within the low span area.
3.0.23 The deformation joints in a building should be calculated based on their natural layers and are combined within the building area.
Deformed joints that are not connected to the interior are not calculated. As shown in the figure below: When the high and low spans are connected to the building, when the high and low spans are connected internally or partially connected, the area of the deformation joints of the connecting part is calculated within the low span area.
24. Calculate the same area of the equipment layer
3.0.26 For floors with structural layers such as equipment layer, pipeline layer, refuge layer, etc. in a building, if the structural layer height is 2.20m or above, the full area should be calculated; if the structural layer height is less than 2.20m, 1/2 of the area should be calculated.
1, equipment layer and pipeline layer have different specific functions from ordinary floors, but there is no essential difference in structure and construction consumption. In addition, this specification defines natural floor as "floors layered according to the floor structure", so equipment and pipeline layers are also classified as natural floors, and their calculation rules are the same as ordinary floors.
2. If pipes and horse roads are installed in the ceiling space, the ceiling space part cannot be regarded as equipment layer or pipeline layer, and the building area is not calculated. As shown in the picture on the right:
25. The content of the building area should not be calculated
1. Building components connected to the inside of the building;
[Old Code]
3.0.24 The following items should not be calculated :
6 Legs, wall columns, stacks, steps, wall plasters, decorative surfaces, inlaid material surface layers, decorative curtain walls, air-conditioning outdoor unit shelves (boxes), bay windows, components, accessories, awnings with a width of 2.10m or less, and decorative balcony and gallery that are not connected to the building.
"Contact with the inside of the building" means that there is no normal entrance and exit. That is, if you enter and exit through a door, it is considered "connected", and if you turn it out through a window or railing, it is considered "not connected".
2 Open public spaces and building passages on the ground floor of the arcade and crossing buildings
3 Overpasses and platforms for hanging curtains and backgrounds on stage and backstage;
[Old Specification]
3.0.24 The following items should not be calculated in the area:
3 Single-story rooms separated in the building, overpasses and platforms for hanging curtains on stage and backgrounds on stage and backgrounds, overpasses and platforms for hanging curtains on stage and backgrounds on sets, etc.
4 Terrace, open-air swimming pool, flower rack, roof water tank and decorative structural components;
[Old Specification]
3.0.24 The following items should not be calculated in area:
4 Roof water tank, flower rack, pergola, terrace, open-air swimming pool.
terrace refers to "a platform with enclosed facilities for people to outdoor activities that are set on the roof, first floor or awning." The terrace must meet four conditions at the same time: one is the location, which is set on the roof, ground or canopy roof, two is the entry and exit, three is the enclosure facilities, and four is the coverless.
5 The operating platform, feeding platform, installation box and tank body platform in the building;
[Old Specification]
3.0.24 The following items should not be calculated in the area:
5 The operating platform, feeding platform, installation box and tank body platform in the building.
The loading platforms in the figure below do not calculate the building area.
The operating platforms in the figure below do not calculate the building area.
6 Legs, attached wall columns, stacks, steps, wall plasters, decorative surfaces, inlaid material surface layers, decorative curtain walls, air-conditioning outdoor unit shelves (boxes), components, accessories, pick-out column-free awnings with a width below 2.10m and column-free awnings with a ceiling height of or more than two floors;
[Old Specification]
3.0.24 The following items should not be calculated for area:
6 Slitting, wall columns, stacks, steps, wall plasters, decorative surfaces, inlaid material surface layers, decorative curtain walls, air-conditioning outdoor unit shelves (boxes), bay windows, components, accessories, canopies with a width of 2.10m or less, and decorative balcony and corridors that are not connected to the building.
1. The building area should be calculated for structural columns. "Wall-attached columns" that do not calculate the building area refer to non-structural decorative columns.
2. Steps are "stair-shaped steps set up in connection with indoor and outdoor floors or different elevations on the same floor". The outdoor steps also include a platform at the connection with the entrances and exits of the building.
(1) Steps may be built using terrain.
(2) If the steps may use the lower space, the area shall be calculated based on the roof of the building.
(3) Steps may also be overhead (the height from the starting point to the end point is within a natural floor)
3. Since stairs are architectural components of "vertical traffic between floors", the height from the starting point to the end point reaches one natural floor or above is called stairs.
7 Convex (floating) windows with a height difference between the windowsill and the indoor floor and a net height of 2.10m and below, convex (floating) windows with a height difference between the windowsill and the indoor floor and a height difference between the windowsill and the indoor floor and above;
[Old Specification]
3.0.24 The following items should not be calculated for the area:
6 Legs, wall columns, stacks, steps, wall plasters, decorative surfaces, inlaid material surface layers, decorative curtain walls, air-conditioning outdoor unit shelves (boxes), bay windows, components, accessories, canopies with a width of 2.10m and below, and decorative balcony and corridors that are not connected to the building.
8 Outdoor ladders, outdoor special fire-fighting steel stairs;
[Old specifications]
3.0.24 The following items should not be calculated in area:
7 Overhead corridors without permanent roof covers, outdoor stairs, and outdoor steel stairs and stairs for maintenance, fire protection, etc.
This specification adjusts the word "used" to the word "special", that is, the dedicated fire-fighting steel stairs do not calculate the building area.
When the steel staircase is a building passage and takes into account fire protection purposes, the building area should be calculated.
Question: Is it reasonable to use
to differentiate the area by using materials?
9 A sightseeing elevator without enclosure structure;
1. A sightseeing elevator without enclosure structure is shown in the picture on the right, that is, the elevator car is directly exposed, there is no well wall on the outside, and the building area is not calculated.
2. If the sightseeing elevator is running in the elevator shaft (the well wall is not limited to material), the sightseeing elevator shaft shall implement Article 3.0.19 to calculate the building area according to the natural floor.
3. The content of this specification that does not calculate the building area does not mention "escalators, automatic sidewalks". The building area should be calculated for escalators and automatic sidewalks.
escalator is calculated according to the natural floor according to Article 3.0.19.
When the automatic sidewalk is in a building, the building area should not be deducted from the area occupied by the automatic sidewalk.
10 Underground civil defense passage outside the building, independent chimneys, flues, trenches, oil (water) tanks, gas cabinets, water towers, oil (water) pools, storage silos, trestles and other structures.
1. This specification adjusts the language order and moves the "underground civil defense channel" to the front. Whether it is independent or connected to the building, the building area is not calculated. The original specification is easily understood as an independent underground civil defense passage.
2. Cancel the "subway tunnel". Subway tunnels are municipal projects and are very clear that they do not calculate the building area, so this code will not be mentioned anymore.
3. Independent flue belongs to structures and does not calculate the building area; however, the building area should be calculated based on the natural floor (see Article 3.0.19).
4. Independent oil storage (water) pools belong to structures and do not calculate the building area.
's insights on the "New Area Code"
1. The new building area specification has not curbed the stealing of area
2. The bidding control price of engineering projects compiled using international lists is not affected by the rules for calculating the building area.
3. The technical and economic indicators of engineering cost are related to the rules for calculating building area.
4. The new version of the building area calculation specification does not uniformly calculate the building area for the entire process of building engineering construction.
5. The new version of the building area calculation specification is the product of a limited combination of technology and policies.
