Prefabricated buildings have never taken off, and most architects think that a good thing is going so slowly. What's going on? At first glance, it has huge advantages. Faster, better, safer and more environmentally friendly. Why don't you use it on every building?
We unravel all these ideas of prefab house.
First, prefabricated parts speed up construction time: the main body of the building can be built in the factory, while the foundation and infrastructure can be completed on site. Time is money. In architecture, time is money.
Secondly, the quality of workmanship is always better in stable factories than in open-air sites. Although only heavy objects such as concrete and bricks can be placed on site.
Third, it is safer for workers to build in a factory on stable floors rather than high places and with better security controls on site. It is particularly easy to manage if workers are assembling materials for upper rooms or units on the factory floor. Prefabricated units for dining rooms, toilets and emergency rooms are far better built in factories than in muddy places.
Finally, and most importantly, it is now more environmentally friendly in many ways: the use and investment of materials are better controlled, waste can be more effectively recycled; transportation is reduced: all tools are placed in a safe Instead of traveling by truck and light truck across the city; workers can take public transport to a convenient location instead of driving to various places every day.
These positive ideas have remained the same for 70 years, but prefabricated parts remain a niche market rather than the mainstream, especially in Australia, where the proportion of high-quality prefabricated houses is the lowest.
Where prefabricated homes thrive in Australia is at the lowest end of the market: site sheds, mining waste gas, and mobile homes in mobile home parks (never move). Over the past 10 years, some niche contractors have been set up in Melbourne to design and build high-end homes, but the NSW industry around Gosford remains focused on the cheap and leisure market.
Unlike Australia's understanding of prefabricated houses as a cost-driven alternative, in the United States, prefabricated parts are being advocated for the construction of complex, ingenious homes, while prefab villas are not possible in the field construction, and they the construction cost is also comparable. But the complexity of financing, the limited number of high-end customers, and the global economic recession have driven early innovators in the industry. However, as in the past 13 years, Living House in Los Angeles continues to build an ever-increasing number of exquisite high-tech homes.
Because containers are made of high-strength rust-resistant and weather-resistant steel, prefabricated plants often think of shipping containers as a simple entry point. They can withstand extreme weather and can stack six to eight tall basic features. But for a room with a width less than 2.4 meters and a length less than 6 or 12 meters, this is a terrible size. If you are looking for student accommodation, backpackers or emergency accommodation are great.
However, it is not very good for conventional housing. One of the best exploratory companies, Logical Homes, Louisiana, abandoned its attempt to use container shipping because of the double problem of the need to cut large volumes into suitable spaces and the authorities required unreasonable certification to enable joint venture Businesses cannot survive. Sydney's Environa Studio also found limitations when building future homes in a built environment in a Sydney Opera House show house. Except for the strength of the four corners, it is best to start from scratch.
One of the problems with all these pre-made solutions is that you are actually moving an empty house when you transport the house: the building itself is space, and moving space is cumbersome and expensive. What if you could prefabricate the house parts instead of the prefabricated house itself? A part of the entire building is prefabricated and these parts are then packed and shipped to the site.
This is an extension of the currently used small factory-manufactured components (such as doors and windows, joinery) that can be transported to the site by truck and assembled by crane and bolted together. You can make whole walls with windows, large floors or compact and complex rooms such as bathrooms.
This is the principle behind IKEA (now manufacturing prefabricated houses) “packing”. . Over time, more and more wood surfaces were exposed in each building.
Where is the market for low cost prefabricated houses? Most likely, prefabricated houses and small homes will continue to be manufactured in entire units, and CLT will be used more and more, but the most interesting development will be the "assembly" rather than "build" component automation. . The most important story is how Toyota invented a new, diversified purchasing and high-quality assembly method to replace the old concept of the production line.
The method of prefabrication has been the same since 1946, but there is a completely different method, that is, the key parts are manufactured by independent factories, which are precisely assembled together in the frame to complete the whole process in a short time. Building with unprecedented micro tolerances and high quality. This way of working must be the subject of the future.