When the air temperature lasts below zero, Building a shelter from snow or ice is not a major difficulty. The most important in this case is the wind cover. The stronger the wind, the cold becomes more troublesome. At temperatures below 10 ° C, the cold becomes very severe and then it is necessary to erect a snowy house, which will protect against the wind, and at the same time will be an excellent thermal insulation. Such snow buildings can have different structures, from the simplest – cavity hollowed out in the middle of snowdrifts – PO Igloo, whose setting sometimes takes several hours. In buildings for shelter for a long time, Cold air can be discharged with a special tunnel, thanks to this, that he is heavier than warm, So it falls down. Ventilation is extremely important in every type of snowy building, Its lack may lead to the suffocation of residents in it.
IGLOO construction
1 Of hard, heavily pressed snow or ice cut the rectangular blocks with saws to snow or with a wide blade knife. Each block should have approximately 1 m in length, 40 cm in height and 20 cm thick.
2 Place the blocks around the hole, which was created after their cut -out. Cut the first layer of ice bricks, to form a spiral, Starting from the first, and ending with the last. This will facilitate the further design of the snow dome.
3 Place the second on the first layer, Setting the blocks alternately. Undercut ice bricks, that the walls lean inside, closing the dome gradually. Cut the bottom in the ice, It will be the removal of cold air, and at the same time entrance.
4 The peak dome block should be larger, than a hole, which remained to cover. Only when laying the block, it should be cut from the inside, that it fits perfectly into the hole, tightly closing the dome in this way.
5 Warm air rises up, cold falls down to the dug hole, which escapes outside through the entrance tunnel. You should always remember to cut out small ventilation holes in the igloo walls.
Ready igloo
Heat from inside the igloo ice walls, which freeze again; Igloo over time turns into an ice enamel covered, paved dome.
It is necessary to cut out at least one ventilation hole in the igloo wall; it will then be avoided. In the interior heated with our heat, It gets hot quickly, Even if there is a gray frost outside and a gale is raging.
