Pipeline integration: integration of pressurized wall panel (ALC plate) and pipeline (see the next page).

It is necessary to introduce and guide the new process in advance.

The side wall of integrated kitchen and bathroom adopts the dry-hanging method, which has a certain sense of empty sound, affects the later sales, and may cause the problem of customer complaints.

Ø The floor+side ceiling of the direct-paved dry-process building can meet the requirements of pipeline separation.

Plate Anchor

Pipeline separation: realize pipeline separation by directly laying the ground and lifting the whole roof (see the next page).

Ø The whole roof side crane is added, which needs to consider the increment of floor height and cost.

Similar meeting risk projects in Zhengzhou: Greenland Park City (integration of internal partition and pipeline), Zhengzhou Huaxin Real Estate Project (integration of internal partition and pipeline), Country Garden Phoenix City Project (integration of internal partition and pipeline), Huaxia Happiness HSBC Jiayuan (separation of overhead dry construction floor and pipeline), meeting risk: 100% at present.

National evaluation standard for precast incentive policy: precast buildings can be identified as precast buildings if the allocation rate is not less than 50%.

Risk of passing the meeting: at present, 100% of the meeting has passed.

The advantage is that the thermal insulation does not ignite and fall off, and the thermal insulation has the same life as the building.

It is necessary to introduce and guide the new process in advance; Scheme 2: Analysis of the practice of precast exterior wall shear wall+horizontal component: 1.

Note: Ø If the experts do not agree to score for the direct-paved dry ground, the direct-paved dry ground can also score for pipeline separation.

Scheme 6: integration of internal partition wall and pipeline+analysis of overhead dry construction method floor practice: 1.

Advantages and disadvantages of precast exterior wall shear wall (post insulation)+precast horizontal component: the cost is lower than that of sandwich exterior wall, and the reward area can get 3%.

The project of precast sandwich exterior wall shear wall+precast horizontal component in Zhengzhou City: the high-end talent building project of the Henan Pharmaceutical Innovation and Transformation Base, the Henan Provincial Youth Talent Apartment Project, Jinhui Youbu Garden, Zhengshang Huxi University, Hechang Shengshi City State, China Electric Power Construction Long Yuehua Building (the second phase is changed to precast exterior wall with thermal insulation), the risk of passing the meeting: none, 100% later.

Scheme 5: Analysis of the practice of precast sandwich exterior wall shear wall+horizontal component: 1.

It is necessary to introduce and guide the new process in advance.

Note: 100% of the guests will pass the meeting, but in Zhengzhou, the guest dining room needs to use wooden floors, and the guest dining room cannot use floor tiles.

Advantages and disadvantages: the overhead dry-process floor and integrated kitchen and bathroom side walls adopt dry-hanging method, which has a certain sense of air noise, affects the later sales, and may cause complaints from sales customers.

dry method floor: overhead dry method ground (see the figure below) 2.

pipeline separation: the overhead floor of the overhead dry method ground can take water and electricity pipelines, and the floor heating module is laid with floor heating coils, which can be included in the pipeline separation.

Advantages and disadvantages: the overhead dry-process floor and integrated kitchen and bathroom side walls adopt dry-hanging method, which has a certain sense of air noise, affects the later sales, and may cause complaints from sales customers.

Advantages and disadvantages: Henan Province has implemented the most precast construction scheme in the early stage, with high cost increment, long construction period, complex design, production and construction, easy to appear problems such as external wall water seepage, thermal bridge, unclear sealant durability, and incomplete grouting.

Except for the internal partition wall, which adopts pipeline integration, the other methods are basically the same as the traditional cast-in-place, and there is no risk of sales and customer complaints.

The cost increment of integrated kitchen and bathroom is highly related to the selected materials, which is only an estimate; The incentive area and the cost offset by relevant financial subsidies are not considered.
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The tower crane model generally requires more than 7025 tower cranes.

The side wall of integrated kitchen and bathroom adopts the dry-hanging method, which has a certain sense of empty sound, affects the later sales, and may cause the problem of customer complaints.

The review data of precast buildings generally need to be submitted to the Assembly Office of the Construction Commission more than 20 days in advance, because the general review meeting needs more than two projects to start, not at any time, and the waiting time is at least one week.

Scheme IV: integration of internal partition and pipeline+integrated toilet (wet floor): 1.

For precast projects without floor area ratio incentives, they are facing a net increase in construction and installation costs; How to select the optimal assembly-type design scheme under the condition of meeting the assembly rate? Comparison and selection of assembly rate schemes to meet the requirements of assembly rate: Scheme I: analysis of the integrated practice of the overhead dry method ground: 1.

It is necessary to introduce and guide the new process in advance.

Advantages and disadvantages: it avoids the problem of air noise caused by the overhead floor, but the cost of the side ceiling increases, and the floor tile cannot be used in the guest restaurant.

Advantages and disadvantages: The wet floor can be used.

With the popularization of precast requirements, the floor area ratio incentives of precast projects are gradually reduced and the acquisition conditions are becoming more and more strict.

This scheme can further reduce the air noise caused by the overhead dry floor.

If the application ratio of precast components in the vertical components of the main structure is not less than 35%, precast buildings can be assessed (A, AA, AAA); Basic working process of precast project (obtaining the floor area ratio award certificate needs to be completed before the planning certificate); Compared with the traditional project design, the assembly-type project design process is more complex, more accurate, more comprehensive, and adds links such as technical planning, component splitting and processing drawing design, which requires higher management ability of Party A’s designers, stronger overall planning ability, and more frequent communication between the process and external experts; Attention should be paid to the acquisition of floor area ratio award: the review of precast buildings should be carried out before the application for repair.

The cost analysis of each assembly rate scheme is based on the following algorithm.

pipeline separation.

Scheme III: analysis of integrated toilet+pipeline separation method: 1.

3.

The planning bureau can only plan the meeting and make the plan public after receiving the reply from the assembly office on the area without capacity award.

Integrated kitchen and bathroom: the side wall of integrated kitchen and bathroom adopts keel dry hanging panel, the ceiling adopts integrated ceiling, the bathroom floor adopts integral waterproof chassis, and the kitchen floor adopts dry construction method.

The design, production and construction difficulty of this system is lower than that of Sanming external wall; However, it is still necessary to focus on the control of key construction links on the site, such as grouting operations, lifting operations, etc.