If it is not in conformity with this contract, it shall be handled in accordance with the breach rules of this contract. Whether to negotiate to make up the difference or pay liquidated damages depends on the result of negotiation.
Effective calculation part
In residential buildings, the scope and method of calculating the construction area are:
1, single-story building, regardless of height, is calculated as one floor, and its construction area is calculated as the horizontal area above the external wall of the building. Part of the floors (such as the attic) of the single-storey residential building area should also be calculated.
2. The construction area of multi-storey or high-rise residential buildings is calculated according to the sum of the construction areas of each floor, the bottom floor is calculated according to the peripheral horizontal area above the toe of the external wall of the building, and the second floor is calculated according to the peripheral horizontal area of the external wall.
3. The construction area of the basement, semi-basement and corresponding entrances and exits shall be calculated according to the horizontal area of the periphery of the upper external wall (excluding the lighting well, moisture-proof layer and its protective wall).
4. Use deep foundation as underground overhead floor. 2.2 meters high, the construction area is calculated by half of the horizontal area outside the overhead floor.
5, through the building channel, the hall in the building, hall, regardless of height, are calculated according to a floor construction area. The hall corridor is calculated according to its horizontal projection area.
6. The construction area of elevator shaft, elevator shaft, garbage chute, pipeline shaft and chimney with wall shall be calculated according to the natural floor of the building.
7. The technical floor in the residential building (used for placing all kinds of equipment and maintenance) is more than 2.2m high, and the construction area shall be calculated according to the horizontal area outside the technical floor.
8. When the width from the outer edge line of canopy structure to the outer edge line of external wall structure exceeds 2. 10m, the area shall be calculated as half of the horizontal projection area of canopy structure plate (the calculation of canopy with columns and canopy without columns shall be consistent).
9. Staircase, water tank room, elevator machine room, etc. With prominent building envelope, its construction area is calculated according to the horizontal area of the periphery of the building envelope.
10. The overhead corridor with a roof between two buildings shall be calculated according to the projected area of the corridor. The construction area of overhead corridor without roof is calculated as half of its projected area.
1 1. Doors protruding from the wall and overlooking rooms, the construction area is calculated according to the horizontal area of the periphery of the envelope.
12, the balcony of the building is calculated as12 of its horizontal projection area. Whether the balcony is a balcony or a concave balcony, whether it is a closed balcony or not, the construction area of the balcony is calculated as 1/2 of the horizontal area of the balcony.
13. If there are no stairs in the residential building and there are outdoor stairs (including evacuation stairs), the outdoor stairs shall be calculated according to the horizontal projection area of each floor; If there are stairs in the building and there are outdoor stairs (including evacuation stairs), the outdoor stairs shall be calculated according to half of the horizontal projection area of each floor.
14, calculate the scope of the total construction area.
(1) The building is calculated according to the horizontal area of the external wall above the toe, and the multi-storey building is calculated according to the sum of the building areas of each floor.
(2) The part with an indoor clear height of more than 2.00 meters (including 2.00 meters) in staggered floors, pavilions (dark buildings) and sloping roofs shall be calculated according to its projected area.
(3) Stairwells and elevators with the upper storey height of more than 2.20m (including 2.20m) shall be calculated according to the horizontal projection area of the periphery of the structure.
(4) If the height of floors, mezzanines, basements and independently built bicycle houses and garages exceeds 2.20m, it shall be calculated according to the horizontal projection area of the structure periphery.
(5) If the glass curtain wall is used as the external wall of the house, it shall be calculated according to the horizontal projection area of its periphery. If it is not used as an external wall only for decoration, it shall be calculated according to the horizontal projection area of the periphery of the structure.
(6) For houses with expansion joints, if they are connected with rooms, the construction area shall be calculated by expansion joints.
(7) Outdoor stairs with roofs are calculated according to the horizontal projection area of each floor.
(8) Cantilever buildings, fully enclosed balconies and verandahs shall be calculated according to the horizontal projection area of the structural periphery.
(9) No matter how high the floors are, the building area of duplex buildings and jump floors shall be calculated as one floor. Stair wells are not recognized as empty floors.
Invalid calculation part
In addition, in residential buildings, the scope of not calculating the construction area is:
1. Components and accessories, artistic decorations and hanging boards protruding from the wall, such as columns, cribs and footstools.
2. Outdoor ladders for maintenance and fire fighting, steel ladders with a width less than 60 cm.
3 chimneys, flues, water storage tanks and other structures that are not independently attached to the external wall.
4. Roof water tank room without enclosure structure.
5. Technical layer (equipment layer) with a height less than 2.2m ..
6. Single-storey rooms such as operation room, control room and instrument room of single-storey houses.
7, the height is less than 2.2 meters deep foundation underground overhead floor, the space for hanging tripods on inclined buildings.
Effective calculation condition
1. The commonly used building area unit in China is square meters. The calculation of construction area in practical work is mainly based on the provisions of the "Code for Real Estate Survey" promulgated by the state. Generally speaking, there are five basic conditions for calculating the construction area:
1) should be covered;
2) There should be enclosure structure;
3) The structure is firm, belonging to a permanent building;
4) The storey height is more than 2.20m;
5) It can be used as a place for people to produce or live.
2. When calculating the building area, according to different calculation methods, it can be divided into three categories:
A house that meets one of the following conditions shall be calculated according to the total construction area:
One, a single-storey house with permanent structure, the construction area is calculated by one floor; Multi-storey residential buildings are calculated according to the total construction area of each floor.
B, the mezzanine, interlayer, technical layer, elevator room and other parts of the house with a height of more than 2.20m are calculated according to the construction area.
C, the passage through the house, the foyer and foyer in the house are calculated according to the floor area. In the hall corridor, if the floor height exceeds 2.20M, it shall be calculated according to its horizontal projection area.
D, stairs, elevator (sightseeing elevator) wells, lifting wells, garbage lanes, pipeline wells, etc. Are calculated according to the natural floor of the house.
E. The house is a permanent building in the air, and the stairwell, water tank room, elevator machine room and sloping roof with a height exceeding 2.20M are calculated according to the horizontal projection area of the periphery.
F. Cantilever building balconies and fully enclosed balconies are calculated according to their peripheral horizontal projection area (this article is the old regulation, and the new regulation is: building balconies are calculated according to their horizontal projection area 1/2. Balcony, whether it is a balcony or a concave balcony, whether it is a closed balcony or not, the construction area of the balcony is calculated as 1/2 of the horizontal area of the balcony).
G, belongs to the permanent structure covered outdoor stairs, calculated according to the horizontal projection area of each floor.
Two. Meet one of the following conditions, only half of the total construction area of the house can be calculated:
A, corridors and eaves galleries connected with houses and covered without columns shall be calculated as half of the horizontal projection area of the periphery of the enclosure structure.
B, independent column, single column, porch, carport, shed, etc. If it belongs to a permanent building, it shall be calculated according to half of the horizontal projection area of the upper cover.
C, not closed balcony, pick gallery, calculated by half of the horizontal projection area of the envelope.
D, outdoor stairs without roof are calculated according to half of the horizontal projection area of each floor.
E. The permanent overhead corridor with closed roof is calculated as half of the horizontal projection area of the periphery.
Roman numeral 3. Those who meet one of the following conditions cannot be included in the building construction area:
Mezzanine, mezzanine, technical floor, basement and semi-basement with a height less than 2.20m. ..
B. Components, fittings, decorative columns, decorative glass curtain walls, cribs, pedals, steps, column-free awnings, etc.
C. Overhead corridor without cover between houses.
D, the roof, platform, garden and swimming pool on the roof of the house.
E. Operating platform, feeding platform in the building and platform for placing boxes and cans in the building space.
F arcades and street floors are used as a part of street roads.
G. Houses built with approach bridges, elevated roads, viaducts and sidewalks as roofs.
H, mobile homes, temporary houses, simple houses.
Independent chimneys, pavilions, towers, tanks, pools, underground civil air defense trunk lines and branch lines.
Calculation action
1, determine the important indicators of construction planning.
2. The basis for determining various technical and economic indicators is an important macroeconomic indicator.
3. Calculate the basic quantities of related components.
4. The main basis for selecting budget indicators and preparing budget estimates.
5. There is a certain proportional relationship between the building area and the usable area, and between the auxiliary area and the structural area.
Extended data:
In China Mainland, the laws and regulations related to the construction area include "Calculation Rules for Allocation of Commercial Housing Sales Area and Public Construction Area" and the current calculation rules for construction area.
In China and Hong Kong, the calculation of construction area and usable area should follow the Code of Practice for Surveying issued by the Hong Kong Institute of Surveyors. There are building technical specifications in Taiwan Province Province, China, and the volume control in Chapter 9 is the specification of volume ratio and building area.
As a technical and economic index, the construction area is used in all fields of construction projects, and it is also one of the important indicators of national macro-control.
Construction area refers to the physical quantitative index for calculating the horizontal area of the periphery of the building structure, with square meters as the unit. It is a technical parameter reflecting the scale of the building. As a basic indicator, it has become the core data that the government, developers and buyers are most concerned about in the real estate market.
The construction area of the project is inconsistent with the actual area. The usable area is also called carpet area/net area, which is the area after the carpet is laid underground and covered.
The usable area is actually the interior area, and the construction area is the interior area plus the pool area occupied by each household.
Code for Calculation of Building Area of Building Engineering is a national standard, numbered GB/T50353-20 13, and implemented on July, 2065438 1 day. The original Code for Calculation of Building Area of Building Engineering GB/T50353-2005 shall be abolished at the same time.
References:
Baidu encyclopedia-construction zone