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At first, the oak bark is peeled at the time of Chuseo (one of the 24 seasonal divisions, about August 23). Next it is put into water. After that, it is dried and a heavy stone is placed on it to flatten it. Bark made this way is commonly about 1.3 meters wide. If the air gets dry, the bark shrinks and obtains many holes.
Section view through a house roof drawing showing names for parts of the structure. [clarification needed] (UK and Australia). Ctrs. means centers, a typical line to which carpenters layout framing. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. [1]
Woodchips used for chemical pulp must be relatively uniform in size and free of bark. The optimum size varies with the wood species. [12] It is important to avoid damage to the wood fibres as this is important for the pulp properties.
A bark roof was common, and was quickly and easily erected. [21]... the roof [was] covered with forest box or stringy-bark, which was stripped from the living trees in sheets of about six feet long and from two to four feet wide, laid upon rafters composed of small sapling poles just as they came from being cut in the bush.
A thatched roof ensures that a building is cool in summer and warm in winter. Thatch also has very good resistance to wind damage when applied correctly. Thatching materials range from plains grasses to waterproof leaves found in equatorial regions. It is the most common roofing material in the world, because the materials are readily available.
A birch-bark roof (in Finnish: malkakatto or tuohikatto) is a roof construction traditional in Finland and Norway for farmhouses and farm buildings built from logs. The birch-bark roof was the prevailing roof type in rural Finland up until the 1860s, when it was replaced by the use of other materials such as metal sheeting and later roofing felt .
Roof pitch is the steepness of a roof expressed as a ratio of inch(es) rise per horizontal foot (or their metric equivalent), or as the angle in degrees its surface deviates from the horizontal. A flat roof has a pitch of zero in either instance; all other roofs are pitched .
In Scandinavia shakes, traditionally used only for roofing, are generally smaller than in North America, measuring 13–16 inches (330–410 mm) long, 4–6 inches (100–150 mm) wide and 1 ⁄ 8 inch (3.2 mm) thick, [6] while in Poland and Slovakia they are usually 36 inches (910 mm) long, 4–6 inches (100–150 mm) wide and 1–1.25 inches ...