Moreover, What the soil test survey Counsel say is causing genuine concern for many people. But also, They think that is the last word. In fact, it is not the last word, but it does not fall at the level of any word. Likewise A report Represents information, and a Geotechnics engineer will determine the foundation.
In engineering terminology, soil testing means investigating the soil beneath a building or installation.
Likewise, You should inspect the site before conducting soil test Survey. Similarly, This will give you a good idea of the condition of the soil surface and will help to determine the process of the testing.
The following data would be collected from the site:
(1) If the value is 2 or less, the is soil test survey very soft should be understood, which has a carrying capacity of only 2 tons per square meter.
(2) If the value is 2-5, soft soil, bearing capacity 2-5 Ton / Sqm.
(3) Medium soil if value is 5-9, bearing capacity 5-10 Ton / Sqm.
(4) If the value is 9-17 then stiff or hard soil, bearing capacity would be 10-20 Ton / Sqm.
(5) If the value is 17-33, very stiff or very hard soil, bearing capacity 20-40 Ton / Sqm.
(6) If the value is above 33, it means Hart or very hard soil with a carrying capacity of more than 40 Ton per square meter.
Additionally, We conduct soil tests to ascertain the safe bearing capacity of the subsoil. Furthermore, Remember that any type of installation such as residential buildings, commercial buildings, schools-colleges, mosques-temples, hospitals, shopping complexes, bridges-culverts, highways, railways, airports, power plants. Etc. Soil test Survey is essential for design.
However, since the safe carrying capacity of soil in our country is 9-10 tons per square meter, engineers usually do not refer to soil test for light structure (one or two storey building). Similarly, The foundation of these light buildings does not have more load than this. However, soil testing is essential for more than three storey buildings.
Moreover, Remember that designing without a soil test is the same as taking medicine without a doctor’s prescription. Just as Without it, it is not possible for anyone to know the characteristics of the subsoil. Additionally, An engineer needs to assess the soil test report to determine the appropriate foundation for safeguarding the proposed installation.
Similarly, Perform a soil test survey before commencing construction, particularly prior to the design phase. Because it is an essential prerequisite for foundation design. But also, The main purpose is to determine the bearing capacity of the soil. As a result, You can also obtain ideas about the type of foundation through soil testing. That is how we recognize the foundation will be shallow (e.g. footing) or deep (e.g. piling).
However, The soil test report mentions the ‘bearing capacity’ and ‘foundation type. You are correct, we designed the foundation based on the testing report. Similarly, The report includes SPT, soil type, stratification, various test results, boring point layout, and more.
Moreover, Foundation design is impossible without soil test. But also, Without proper foundation design there is a possibility of settling or relocating the installation which may later cause damage or threat to the installation causing cracks or fissures. In fact, In regions with weak soil, soil testing is essential to accurately design the piling. Moreover, Proper piling is necessary to mitigate the impact of earthquakes.
Additionally, In our country, soil investigation typically employs the soil test survey boring method. Similarly, This method involves hammering a 2-inch diameter pipe into the soil with the assistance of water. Furthermore, We measure soil samples and their strengths at 5-foot or 1.5-meter intervals.
When inserting the pipe into the soil at 5-foot intervals, it is essential to record the value of N for the next 1.5 feet or 16 inches. However, We do not consider the number of slashes within the initial 6 inches of these 16 inches.
Therefore, the number of slashes needed to enter the next 12 inches is the value of N. If we need 15 slashes to insert 12 inches, then the value of N will be 15. Specifically, The value of N varies depending on the soil layer, as the value of N in the first 10-15 feet is very low.
In fact, If the value of N is above 15, then it means hard soil layer.
(A) Plate Load Bearing Test: This is a simple machine operation method by which the final bearing capacity and soil test survey compression at any level of soil can be measured or determined. Moreover, the results determined by this test can be compared and verified.
(B) S.P.T Test: S.P.T (S.P.T = Standard Penetration Test) is used to determine the value of soil’s N value as well as the soil collation for the laboratory test. N Value gives direct direction to the bearing capacity of the soil.
Note: The bearing capacity of soil can be determined and tested directly in the field with the help of S.P.T value.
According to the ASTM Soil lab tests are usually as follows:
Why?
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