New technology for the construction of a frame house: we raise the roof, and then we build walls under it
The construction of a pitched roof is one of the most laborious and expensive types of work associated with the inconvenience of working at a height, among the beam floor system. Most builders erect scaffolding around the building to install the roofing material. And this is additional costs and time for scaffolding erection and dismantling.
There are isolated cases when a roof with a rafter system and roofing material is erected at ground level, and then lifted by cranes to the walls of the house.
It is difficult to say why the customer decided to make this roof with dimensions of 13x13 m on the ground. Perhaps doing it myself or assembling the roof on the ground by the construction team turned out to be faster than lifting every beam and board up. The only question is how to securely fix the roof to the armored belt on the walls through a system of anchors and corners. I believe that such a solution takes place, especially if it reduces the cost and construction time.
Installation of a roof from SIP panels using a crane. Speeds up the attic construction process.
In New Zealand, in the construction of single-story frame houses, they went even further. There, too, a roof is assembled on the ground with a roof covering and, with the help of a pre-installed system of jacks, the entire roof structure is raised to the design height. We look:
The logic of this work is as follows: the roof is easier to erect on the ground, there is no need to lift the material high by hand or by crane. No scaffolding needed, only ladders. It is safer for builders. All this speeds up the work.
And most importantly, when there is a roof, you can work on the construction of the walls of a frame house in any weather. Even heavy rain is not a hindrance. And the scorching sun does not interfere - it is more comfortable to work under the roof.
The operation of the jacks when lifting the roof must be synchronized. It can be seen that hoses from the central pump (or wiring, if they are electric) are suitable for them. The only drawback of the technology is that the installation of the main wall frames should be quick, in one day. Otherwise, the wind could topple the roof.
The same roof lifting technique can be applied to the construction of one-story houses from construction blocks according to the following scheme: Raised the roof for a day, erected the walls to a certain height - lowered the roof to masonry. The next day, they raised the roof again, erected 2-3 rows, and lowered it again. Thus, there is no risk that the wind will knock the roof off the jacks.
I believe that this technique, the technology for the construction of one-story houses, has clear advantages over the classical one. Here are just jacks clearly have a high cost and they will be economically beneficial only to construction companies who build houses on the stream. They will quickly pay off due to the shortening of roof construction times.
What do you think about this technology - write your opinion in the comments.