Construction services

Garden walls, part 1

Garden walls in green areas are most often built in places where there are differences in height between adjacent planes. In such places, they provide protection against landslides of the adjacent ground. However, due to their decorative features in combination with plants, such walls can be very valuable elements of gardens, because they give the opportunity to create interesting artistic solutions.

garden-wallScheme of building a garden wall: 1 - slope gutter, 2 - coarse sand, 3 - ceramic filter for collective drainage, 4 - built-in drain filter.

Garden walls are usually called small vertical or slightly tilted walls. Walls 40-120 cm high, dividing two planes of different heights. The greater the height difference, the stronger the pressure on the ground behind the wall. Apart from the difference in height, the size of this pressure is influenced by the type of soil and its cohesion. Little cohesive soils, for example sandy, they slide down easily, therefore, garden walls holding such grounds are most exposed to pressures that can cause cracks or deflection, and even overturning. Walls can also be exposed to other forces directed in the same direction. These forces occur when the wall freezes, when the ground on it is still positive. Under such conditions, ice crystals may form on the inner wall of the wall, and their accumulation causes the occurrence of significant distracting forces. When designing garden walls, it is therefore necessary to take into account the occurrence of the discussed forces and to properly prevent their destructive effect.

Walls in height exceeding 1,2 meters are often called retaining walls, because the primary role of such high walls is to hold back a landslide,, that is, putting up a specific resistance. Wall design, requires the calculation of their required strength, taking into account the properties of the soil, on which they are to hold and upon which they are to be built. Retaining walls usually require deep foundations (below freezing depth) and a very rigid structure.