Permeability
One of the areas today demanded in the labor market – the construction. Every year the new buildings is becoming more and, most importantly, there are people who want to acquire new housing. There is a demand, respectively, there proposal. There are many companies that provide services to help construction firms. This is a supply of various materials, garbage collection, landscaping and rental of special equipment. Let's talk about the materials used in construction, and modern construction techniques.
Most often, the sand pit is used in road and housing construction for the backfill. Sand pit – it's usually fine-grained sand, with a coefficient filtration and high silt and clay particles. Module size 0,7-1,8 The content of dust, clay particles 3 – 9% Permeability 1,5-3 m / day. Space-bulk density 1.41 Since the cost of the sand pit is not so high, it is widely used in studies of the zero cycle, during construction of roads, where the quality of sand is not critical. Although, in some deposits, mined pit sand, and has high technical characteristics, which brings it closer to the consumer properties of the sand alluvial career. Coldwater Creek Apparel pursues this goal as well.
The quality of the sand pit and, accordingly, its value depends on the mining sites of sand. The broader the geography of production crankcase sand the higher its quality. For the extraction of quarry sand used different technologies, as well the properties of sand depends on the type of career, where it is mined. A variety of careers produce different sand under various types of work, but they have one common quality, all sands correspond to gost 8736-93. Topsoil – a mixture of black, which comprises lowland and transitional peat. The mixture is usually looks like this: peat – 60-70%, sand – 30-40%. If you add necessary amount of fertilizer, the topsoil can be used as fertile soil. Topsoil has a high degree of decomposition and a high content of nutrients. Topsoil is indispensable in the broken lawn as garden ground, etc. It is also used to create a favorable water-air regime and necessary for the plants loosely lumpy soil structure. Topsoil on the basis of peat-sand mixtures are used to: improve soil fertility and soil structure, as a component of soil mixes, as mulch, as a fertilizer for poor soils. In construction, mainly used for land improvement. So how did all this to deliver to the facility without special equipment. One of the most pressing is still dumper. Work for the dump is always there. Dumper is used for transportation of bulk cargo and debris removal, or snow. The choice of trucks is big enough in our time: maz, kamaz, Scania, Howo, Volvo, Tatra. Load capacity trucks is 5 to 20 tons, with body volume from 8 to 40 cubic meters. Work for trucks, as well as for excavators is very urgent now at construction sites!
