The most prone to construction problems lies in the vertical members and the node treatment between each floor.

It is difficult to construct vertical components.

As the precast building is still in the promotion stage and the market is not mature, the unit price of PC components provided by the prefabrication plant is higher than that of cast-in-place concrete on the construction site.

From: Architecture talk network (ID: jianzhangyang Wang) this article has been authorized.

In essence, the biggest advantage of precast buildings may be that they require less labor on the construction site.

The key to reducing the overall cost of precast buildings is to control the cost of manufacturing, transportation and on-site installation of PC components.

As netizens said, “the business model that relies on intensive manpower will eventually come to an end, and with the help of new technology, it may take longer for tireless machines to contribute efficiently.” Objectively speaking, precast buildings must have irreplaceable advantages.

In June this year, Changsha Yuanda “living building” was officially unveiled.

Architecture talk network.

As long as you pay a little attention to the industry news, you will find that “precast building” is a high-frequency hot word.

Therefore, the cost comparison between the two modes is only due to the high cost of the processing and installation of precast components, which widens the cost difference between precast buildings and cast-in-situ buildings, and precast buildings have cost advantages in other projects.

People in the real estate business (net name: Pumpkin adult’s eggplant) believe that the assembly technology of stairs and floors is mature and has no problem in terms of design, processing and installation.

The disadvantage is that the manufacturer’s formwork is relatively fixed, there are many design restrictions and the cost is relatively high; It is difficult for consumers to buy suitable sanitary products because of the positioning restrictions such as the size of the water.

So the question is, can precast buildings keep on fire? How long can it last? The construction of a short ten storey residence took 28 hours to complete.

The disassembly of civil engineering budget data under the two modes is shown in the figure.

In terms of other sub items and cost, precast buildings even have certain advantages.

This 11 storey “living building” completed in only 28 hours is the world’s first stainless steel building.

All are installed and debugged in the factory, and the on-site installation is very simple.

In general, the cost per square meter of precast buildings is nearly 500 yuan higher.

As soon as the news came out, foreign media reported it, and netizens praised it.

By drilling two rows of holes at the bottom of the column and injecting glue, however, there is no convenient glue injection quality detection method without damaging the structure at this stage.

The column beam of “living building” adopts stainless steel channel steel and square pipe, and the floor adopts the original “stainless steel core plate”, and the whole building does not need concrete.

Lifting Socket

The development of precast buildings has a long way to go, and the transformation of construction methods cannot be achieved overnight.

It requires experience accumulation and time test, but also needs to focus on industry and down-to-earth innovative spirit.

The precast building adopts the factory assembly line components of wall, beam, column and floor, which are transported to the construction site for assembly, and connected with slurry anchor and post cast concrete.

At present, domestic precast building components are divided into stairs, floors and vertical components (frame columns and shear walls).

However, compared with traditional buildings, the construction difficulty and cost of precast buildings are higher at this stage.

This entry frequently appears in news headlines, demonstrating the country’s determination to promote precast buildings.

It can build, use and manage buildings through standardized, industrialized and information methods.

The living building is transported in a 40 foot container, which can be transported all over the world without obstacles and at low cost.

The main price disadvantage compared with traditional buildings is that in civil engineering, it is about 664 yuan higher per square meter.

But the toilet is not easy to do, the pipeline is not easy to stay, and it is easy to leak.

In the consumption quota of precast construction projects (Exposure Draft) prepared by the Ministry of housing and urban rural development of Zhejiang Province organized by the Ministry of component processing and installation, reference indexes are given for the investment estimation of precast concrete housing and precast steel structure housing projects with 8 types of PC (assembly) rates.

“Living building” is 100% factory manufactured, including structure, wall and window, electromechanical and intelligent control.

The highest PC rate is 60%, and the corresponding index is: in addition, according to the data given by a construction unit in Taiyuan, Shanxi Province, with the release of quota, the proportion of PC (assembly) has increased from 20% to 50%, resulting in an increase in cost from 6-8% to 18-22% compared with traditional buildings.

The advantage is that the problem of water leakage is solved at the root.

The construction cost of cast-in-situ construction is mainly composed of people, materials, machinery, enterprises, profits, regulations and taxes.

Developers avoid vertical components and choose integrated toilets.

Compared with traditional buildings, it has the advantages of short construction period, less labor force and high construction quality.

The cost is high.