The framework platform is the technique of construction to framework wood the most used in the world, in particular in North America, Sweden, with the Japan and in France. This system takes as a starting point two methods of construction.

On the one hand, houses with Half-timbering built by the method of the Wood courts: the framework makes only one stage and the floor of the first is used as platform for construction of the following stage.

In addition, houses manufactured according to the system Balloon frame : the pieces of wood are of weak section and the rising are very brought closer.

History

This manufacturing process is contemporary. It especially developed with the appearance of the panels derived from wood and the systems from assembly (connectors, cramps, twisted points…) in the middle of the 20th century.

Principle

The amounts of the framework have a length equivalent to the height of the stage. They are spaced from 40 to 60 cm and are fixed on smooth low and high by nailing. The pieces of wood have a minimal section of 100 by 36 mm ². The levels are autonomous: the first can be gone up on a flagstone in Béton or out of wood which is used as platform to go up the smooth level suivant.
La high supports the Solive S of the Plancher of the upper floor. The assembled floor can then receive the framework of the second level. The last level receives the Charpente (in the majority of the cases industrialized).

The structure is then covered and equipped with various elements to ensure the sealing and the acoustic thermo isolation and of the wall. Interior towards outside, the wall is covered with a coating of completion such as a plate of hard-bound plaster facing or Lambris, then of a film Pare-vapeur. A blade of air can be arranged for the passage of the sheaths and pipes. An heat insulator is placed in the vacuum between the amounts.

For to brace the building, a veil in panels derived from wood (panels OSB or particles) is nailed or screwed on the parts of the framework. To perfect the sealing with the rain and the wind, a avoid-rain is laid out in front of the veil of wind-bracing. Then, of the Tasseau X are fixed on the veil at the right of the amounts. The blade of air created by the liteaux ones ensures the air circulation allowing the drying of possible condensations the back of the external coating. This coating can be a sawn timber boarding or brick, a hydraulic coating on support, a thick flexible pavement on panel wood or any other material.

Strong points

• Méthode of construction flexible, offering more architectural possibilities that buildings built on the principle of the frame .
• economic System of construction.
• Possibility of building the panels machines some to limit the work the site.
• Method also adapted to the small companies with the technique of “precut”. the parts are precut with standard dimensions and the house is entirely assembled on the building site

Limits

• Method releasing less volume than the Framework post-beams.

External bonds

Constructions with framework wood , Yves Benoit, Thierry Paradise

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