When the project site is abundant, and the single storey basement meets the planned parking quantity, the basement is required to enter the house, and it is not acceptable to enter the house through steps.
3.1 Connection between the main building and the basement 3.2 Economic comparison and analysis of the scheme summarizes that the underground cost is generally not a customer sensitive point.
Therefore, in the design stage, careful overall consideration should be made from the column grid size, structure selection, roof load, pipeline integration and other aspects.
The B1 floor below the mezzanine is located in a storage room or a bicycle garage, Increase the value of the project as much as possible.
Conventional optimization design focuses on the selection of reasonable column grid size, control of floor height, bilateral parking as far as possible, reasonable lane layout, square basement contour, civil air defense design and other aspects, but ignores the common pain points of design, cost and marketing caused by the area of low efficiency, difficult to use and difficult to sell under the tower projection.
When the project is covered with 1.8m soil, the first floor of the building can be set with a downward jump mezzanine.
Overview: The rising trend of housing prices has been suppressed due to the constantly introduced regulatory policies.
When the project site is tight and the single storey basement meets the planned parking quantity, the main building shall be connected with the basement, and the basement shall be designed by connecting the main building with the basement.
The basement enters the main building through steps.
On the premise of meeting relevant specifications, reduce the cost of civil air defense construction through design means, improve the space utilization efficiency and create more value.
No parking is allowed under the main building, and the core tube shall be connected to the B1 floor of the garage; Scheme 3: When the project site is very tight, in order to avoid the two-story basement and maximize the number of parking spaces, the basement is required to enter the house, and the main building and basement are designed to be connected, and parking is required under the main building.
For the pain point, the basement optimization follows two principles: the first is to minimize the scale of the basement, and the second is to minimize the excavation of the basement, that is, to maximize the use of the parking area that can produce underground benefits within the limited building area.
The underground space has complex functions.
When the project site is abundant, the single storey basement meets the planned parking number, and when it is accepted to enter the house through the ground, but the construction period is tight, the main building is designed to be separated from the basement.
Therefore, attention should be paid to the design of the basement at the beginning.
For the setting of equipment rooms, attention should be paid to avoiding indoor noise and vibration interference, and targeted measures should be taken to deal with it.
The conventional basement form is that the main building of the residence is connected with the basement, there is no parking under the main building, and the basement floor of the main building is flush with the basement.
Scheme 2-b.
Fixing Socket Waved End Nail Plate 
According to the city policy, fully tap the value of the underground space of the building.
Mining the value of the underground space of the building.
When the project site is abundant and the single storey basement meets the planned parking quantity, the basement is required to enter the house, and the main building is designed to be separated from the basement.
The main building is separated from the basement, and the basement enters the main building through the passage.
Preconditions: The overburden layer of the project is 1.8m, and the floor height of the basement is 3.5m Solution: Two floors of basement are set under the main building, and the first floor of the main building of the residence is set with a down jump mezzanine, with a floor height of 2.9m; A bicycle garage is set on the B1 floor below the main building, with a floor height of 2.7m.
Underground costs include: survey, foundation selection, slope retaining wall, foundation pit support, etc., which are cost sensitive but relatively insensitive to customers..
2.2.
For the single storey basement, according to the different conditions of the project, different ways of connecting the main building of the residence with the basement are adopted, as follows: Scheme 1-a.
3.
In the design process, different products and project positioning should be combined to fully tap the value of the underground space of the building, which should be reflected in the sales.
The buried depth of the garage is one of the main factors affecting the cost of the basement, in which the storey height and the thickness of the covering soil are the two major factors affecting the buried depth.
(Click here to view) 1.
Solution 2.1.
The research results are applicable to projects with relatively high geological conditions that can use raft foundation.
At the beginning of design, fully analyze the policies of the city, combine one policy for one city, and excavate the land value; 2.
Through combing the research on optimization design of conventional basement, it is divided into the following five parts: parking space size and column grid, floor height control, lane order, basement contour, and reducing civil air defense costs.
No parking is allowed under the main building, and the core tube only goes to the basement of the main building.
Strengthen the awareness of space utilization under the building and consider how to increase the value of goods for the project; 3.
The case analysis takes a 19 storey residential building (building height below 54m, covering soil thickness of 1.8m) as an example.
The construction cost of the basement accounts for 20-30% of the total construction cost of the project, which is the largest part of the cost expenditure of the whole project, and has always been the key object of cost optimization for real estate enterprises.
To optimize the basement cost, the value mining of the underground space of the building is to optimize the basement cost.
Pile foundation projects need to be analyzed separately.
When other conditions are similar, the lane order has a more significant impact on the parking efficiency of the basement.
The principle of maximizing the use of space under the tower: 1.
In order to fully tap the value of the underground space of the building and maximize the value of the project, this achievement conducts the following research from the perspective of the relationship between the basement and the building: 2.
On the premise of ensuring safety, we should pay attention to the underground cost to help improve the project profit.
Make full use of the space below the building as much as possible: a) The placement of equipment rooms and bicycle garages can release the space outside the building for centralized parking of motor vehicles; b) The setting of storage room and parking space can generate value; c) As a gift of aboveground indoor space, it should be reflected in the price; 4.
Scheme 1-b.
Scheme 1-c.
Due to the influence of superstructure and floor height, invalid space is easy to be generated under the building.
Pre control the risk of regulation reporting, acceptance and delivery in advance to avoid violations and minimize the cost waste caused by process dismantling; 5.
The labor, construction and financial costs in construction expenses have all risen rapidly, and cost reduction and efficiency enhancement are particularly critical.
When accepting the ground access, the main building and the basement should be connected.
In order to better control costs, speed turnover and improve customer experience, the underground space is classified into basement functions and non basement functions for optimal design.
Scheme 2-a: When the project site is tight and the single storey basement meets the planned parking quantity, the main building and the basement need to be connected.
