The carcass construction – log walls.
The carcass construction (also known as log walls) is a structure made of horizontally arranged wooden beams. The main feature is the way of joining the beams in the corner with the overlays, locks etc.. Beams in adjacent walls are shifted relative to each other by 1/2 heights. The wreaths rest on a foundation, which transfers the entire pressure of the walls to the foundation and therefore should have increased dimensions. The ground floor runs on one level under all walls, both external, and internal. The degree of processing of the horizontal logs can vary: from processed trunks (round logs) through square or rectangular beams, right up to complex profiles. Wreaths are connected between successive layers in various ways, the simplest of which is to connect with 2.5 pins×14 cm, hammered what 1 m in one or two rows. A more complicated way is to connect to a groove and a groove or a movable tongue. Both the processing of the wreaths, like joining beams at the corners, sealing method and other details, they offer great opportunities for individual design solutions - modern and referring to regional traditions.
Massive wooden walls with a carcass construction are made of logs, amphibians, squared timber, beams with sharp edges, bali itp.
Full wooden walls, used in year-round residential buildings, they are often made of beams with too small sections, to meet the thermal insulation requirements of external walls. That is why various thermal insulation solutions are used in contemporary projects, allowing the original character of the log wall to be preserved:
– a single log wall with an additional stud wall from the inside, with thermal insulation made of mineral wool between the elements of the structure,
– double log wall with thermal insulation, which allows air to circulate (e.g.. from cork granules).
The economical and simplified version of the carcass construction is a split system (also known as post-sum or post-post), in which complicated and time-consuming corner nodes are eliminated. The dilated system is a mixed construction, composed of horizontal logs and vertical poles. Smoothly trimmed planks (also called sumikami) slides tightly into the cutouts of the posts (these notches are called patches). The dilated system is used in outbuildings or cost-effective summer houses.