Taking the wall as an example, traditional buildings require workers to lay bricks layer by layer on the site.

About 90% of them come from the production stage of steel, cement and aluminum.

From another dimension, the decline of demographic dividend may force the transformation and upgrading of the industry.

Young migrant workers flow into express delivery, takeout, we media, online car hailing and other industries..

Since 2014, the number of migrant workers in the construction industry has been decreasing almost every year, and the supply side of migrant workers has declined year by year.

In ancient times, large buildings such as temples, palaces and tombs were built with many assembly ideas.

Compared with traditional buildings, precast buildings have incomparable advantages in building quality, construction period, energy conservation and environmental protection.

Precast building is the only way to transform traditional buildings into green buildings.

The waste of traditional building materials is serious, and the construction process is also accompanied by dust, noise, construction waste and so on.

Building components and accessories (such as floor slab, wallboard, staircase, balcony, etc.) processed and manufactured in the factory, transported to the construction site, and assembled and installed on site through reliable connection.

According to the data of China Building Energy Consumption Research Report (2020) issued by the energy consumption special committee of China Building Energy Conservation Association.

At the same time, the number of migrant workers aged 18-40 has gradually declined, and the age structure has gradually increased.

In the following years, after the transition of animal bone tent and animal skin tent, it entered the Neolithic age from the Paleolithic age.

Then superimposed on the urban reconstruction of World War II, the precast buildings were popularized rapidly.

With stone, wood, mud brick and thatch as raw materials, houses with real architectural elements have emerged.

The traditional construction industry is a labor-intensive industry, which is highly dependent on labor.

With the gradual reduction of labor force and the continuous rise of labor cost.

In fact, precast buildings have a long history.

The core element is prefabrication and modular assembly.

Hourglass Rebar Cap

Water and electricity installation and main body installation can be carried out simultaneously, and the overall delivery is 30% ~ 50% faster than that of traditional buildings.

Precast buildings refer to the transfer of a large number of on-site operations in the traditional construction methods to factories.

According to statistics, the average income of migrant workers has maintained an annual growth rate of more than 5% in the past five years.

Stone components are chiseled in the processing site, or wood columns, beams, bucket arches and other components are made, and then transported to the site for installation.

The carbon emission in the construction operation stage is 21.1tco2, accounting for 21.9% of the national carbon emission.

The proportion of precast buildings in the United States, Japan, Europe and other developed countries has reached more than 80%, while the domestic precast buildings are just beginning.

Specifically, the traditional construction method is highly dependent on labor, and it is difficult to monitor the quality.

The materials of industrial production and the construction method of assembly are easier to form a set of standardized system to ensure the quality.

In the era of farming, mankind began to settle down.

Behind this is the inevitable result of the development of Internet plus services industry.

The purpose of this paper is to discuss the differences and advantages between precast architecture and traditional architecture with readers.

The same is true during the construction operation phase.

According to alpha research, migrant workers’ labor force is characterized by shortage and aging.

Opening the history of human development, architecture is an indispensable part of it.

Construction migrant workers are more scarce, making the labor cost higher than the overall level.

However, the production of steel, cement, aluminum and other building materials is accompanied by high emission and high pollution.

It can be said that precast building is the only way for traditional buildings to transform into green buildings, and it is a crucial link to achieve the goal of double carbon.

The only way to transform traditional buildings into green buildings may be that some readers are unfamiliar with precast buildings.

Building materials and processes have undergone repeated iterations and upgrades, and a new building form – precast building has been born.

The precast construction site is mainly dry operation, which can effectively reduce energy consumption and environmental pollution; In addition, because of its removable characteristics, precast buildings can also be reused; According to the calculation of senior experts in the industry, the carbon emission of various precast buildings in the construction stage can be reduced by about 20% compared with that of cast-in-situ; In the whole life cycle, due to the use of new materials, carbon emissions can be reduced by nearly 40%.

Most components of precast buildings are completed in the factory.

Compared with traditional buildings, the core advantage of precast buildings is to reduce pollution and emissions.

Since the Paleolithic age, humans have had the concept of cave dwelling.

With the advent of the industrial revolution, modern buildings with reinforced concrete as the main material began to appear, and its representative work is the skyscraper towering into the clouds.

With the sustained development of the economy, the labor cost rises.

In 2018, the highest carbon emission in China’s building materials production stage was 2.72 billion tCO2, accounting for 28.3% of the country.

Today, scientific and technological progress has led to the rapid development of modern construction technology.

It is not difficult to understand the meaning of precast buildings.

With the continuous innovation of Internet business model, many new jobs have been created, and the employment absorption capacity of service industry exceeds that of traditional industries.

As we all know, the construction industry, as an important pillar industry of China’s national economy, has grown with China’s huge economic growth.

The carbon emission in the construction stage is relatively small, accounting for 1% of the national carbon emission.

The precast building is to prefabricate the whole wall and then splice it on site, just like the building block game played by children.

This kind of residence originated from natural caves and dug with simple tools has become the earliest architectural form of mankind.

For example, ancient Egyptian and Greek stone pillar buildings, Gothic churches built of stone and colored glass in the middle ages, wooden temples and palaces in China, etc.

Since the 18th century, with the rapid growth of population brought by the development of industrial revolution, the demand for houses and factories has risen rapidly.