Читать книгу Landscaping For Dummies - Lance Walheim - Страница 87

A building project shouldn’t involve a carefree, anything-goes approach. Whatever you build or install outdoors endures constant exposure to the weather and withstands continuous contact with the ground, which teems with organisms that accelerate rotting. The ground is also subject to the following:

 Frost heaves (in areas with severe winters, freeze-thaw cycles cause the ground to buckle)

 Natural settling (natural compaction of soil over time)

 Creepage (the sliding of soil down a slope over time)

 Poor drainage (sodden ground)

 Unstable soils (certain types of soil don’t compact well, whereas others can’t be depended upon to remain in place without extra support)