The shrinkage of a log of the beam is an inevitable process associated with drying wood and compaction of the structure under its own weight. Understanding the factors affecting the shrinkage, and the correct organization of construction work make it possible to minimize possible negative consequences and ensure the durability of a wooden house.
Factors that affect the shrinkage Formation:
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Construction season: Winter construction contributes to a more uniform and smooth shrinkage, since moisture is freezing slowly, which reduces the risk of cracking of wood. Summer construction may require a longer period of shrinkage due to high humidity.
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The breed and density of wood: more dense wood species, such as larch, are less susceptible to shrinkage compared to less dense, for example, pine. Style = «List-Style-Type: Decimal; Font-Size: 11pt; Font-Family: Arial, Sans-Serif; Color:#000000; Background-Color: Transparent; Font-Sweight: 400; Font-style: Norma l; font-variant: normal; text-decoration: none; vertical-align: Baseline; White-Space: Pre; «>
The dimensions and shape of the beam: the thickness and length of the beam affect the degree of shrinkage: the more massive the material, the more time it is required to completely dry and stabilize the size. Style = «Line-height: 1.38; Margin-Top: 12pt; Margin-Bottom: 12pt;»> Recommendations for minimizing the consequences of shrinkage:
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Ending the time before decoration: after completion of construction, it is recommended to wait a certain period before starting finishing work. For houses from a timber of natural humidity, this period is about a year, for a chamber drying timber — 5-6 months.
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Using compensators of shrinkage: installing special screw jacks on vertical poles and other structural elements allows you to regulate the height and compensate for the changes occurring during the shrinkage. Style = «List-Style-Type: Disc; Font-Size: 11pt; Font-Family: Arial, Sans-Serif; Color:#000000; Background-Color: Transparent; Font-Sweight: 400; Font-style: Norma l; font-variant: normal; text-decoration: none; vertical-align: Baseline; White-Space: Pre; «>
Application of casing (rooks): When installing windows and doors, it is necessary to use casing, which avoid deformation of the openings when shrinking walls. A gap (usually 2–5 cm) is left in the upper part of the opening, filled with a heater that is closed with platbands.
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