What are the different types of soil testing?
soil testing is a valuable tool used to help farmers realize the maximum yield of crop. In the construction industry, in most locations, there is mandatory preliminary testing in order to determine the contamination, determine the suitability for the construction and select the right type of base. Different types of soil tests include contaminant tests and mineral concentrations, compaction tests, cone tests, consolidation tests and percolation tests. The soil composition also varies at different depths, so the samples must be taken from the level where the most root activity occurs. Early tested levels of two elements are nitrogen and phosphorus. There are a number of methods for measuring nitrate and ammonia, the most common forms of nitrogen used by plants. The Bray P1 test is used to control phosphorus levels in acidic soil, while the sodium bicarbonate test verifies phosphorus levels for alkaline soils.
Many countries have introduced limitedThe construction concerning places containing potentially toxic or carcinogenic waste, so it is necessary to know the history of property history before development. If the site has been used for a purpose that could result in contamination, soil testing must be carried out before any development. One of the unique methods of testing on the site of such substances is a fluorescent system induced by laser. This test uses a truck -mounted sensor that can detect subsurface oil and uranium. Other methods include soil pairs testing and the use of pore water samples taken from the designated area.
Before installing subsurface septic or sewerage filter systems, the required soil testing usually includes soil percolation and soil profile test. The percolation test simulates the conditions of the septic system and measures the soil ability to absorb liquid. In addition to running the test holes to the level at which the system will be placed, it is also necessary to ensure that the water level in the bestThe point is more than two feet (0.61 m) less than the level of the septic system. The soil profile tests evaluate the soil texture, whether saturated water and the depth of the background rock layer.
soil testing is necessary in construction when determining the types and depths of foundations needed for different buildings at different locations. Geotechnical soil testing includes boring into the soil of the proposed area and then for samples of laboratory tests to determine the composition of the soil. When determining whether clay soils are compatible with building, compaction tests are decisive, what equipment should be used for compact soil and how much compaction is required before pouring Foundation.
One of the most common tests on the site to investigate soft soils is the cone penetration test that developed in the Netherlands in the 1950s. This relatively inexpensive method of soil testing measures resistance and friction against cone -shaped instruments because it is pushed into the soil at a constant speed. The main purpose of this test is pDilute vertical capacity of deep foundations and for soil stratigraphy.
Another reason for soil testing is the detection of the presence of expensive clay. Large clay contains minerals absorbing water that causes wet and always turning it causes to dry, resulting in a volume of up to ten percent. These clays appear worldwide and are the main cause of damaged foundations. It is possible to build on large clay when the foundation is designed in a way to maintain moisture control. In some areas, the elevated pier foundations have been used in expansion clay, although the most stable access is that it extends the foundation below the water fluctuations zone.