What are the objectives of subsurface exploration?
What are the objectives of subsurface exploration?
The purpose of subsurface exploration is to determine and specify earthquake hazards and dangers at the construction site.
What is the purpose of subsurface investigation?
The subsurface investigation is the primary method for gathering the data to generate a report of geotechnical engineering recommendations. Subsurface investigations include the sampling and examination of the below surface materials including soil, rock, groundwater and any manmade materials.
Why is soil exploration important?
The purpose of a site investigation is to make sure that the groundwater conditions are ideal, that the physical properties of rock and soil can accommodate construction, and that the building will be safe for anyone who enters it.
What is subsurface exploration?
Definition. Activities onshore, nearshore, or offshore, planned by a specialist to obtain a geological, geotechnical, or geoenvironmental model of the ground, as close as possible to reality, to enable an environmental or engineering (civil or mining) project to be undertaken with inherent economy and safety.
What are three methods of subsurface exploration?
There are many different types of subsurface exploration, such as borings, test pits, or trenches. Table 2.3 presents general information on foundation investigations, samples and samplers, and subsurface exploration.
What methods use subsurface exploration?
he major method of geo-physical investigations are: gravitational methods, magnetic methods, seismic refraction method, and electrical resistivity method. Out of these, seismic refraction method and electrical resistivity methods are the most commonly used for Civil Engineering purposes.
What is the function of foundation?
Foundations provide the structure’s stability from the ground: To distribute the weight of the structure over a large area in order to avoid overloading the underlying soil (possibly causing unequal settlement).
What is geotechnical subsurface exploration?
A geotechnical investigation will include surface exploration and subsurface exploration of a site. Subsurface exploration usually involves soil sampling and laboratory tests of the soil samples retrieved.
What are the objectives of soil exploration What are the steps involved in the planning and execution of soil exploration?
i. To determine the location and thickness of various soil and/or rock strata up to a significant depth. ii. To collect soil or rock samples at locations that represent changes in soil characteristics across the area and depth for conducting laboratory tests to determine the basic and engineering properties.
What are the objectives of a site investigation?
The objective of a site investigation is to gather the information needed to carry out the risk assessment, in order to be in a position to assess the presence and significance of contamination of land.
What information is gained through subsurface exploration?
Section 4 Subsurface Investigations – All Structures Some of the main types of information that the subsurface investigation needs to provide are: – Depth, extent and thickness of each soil or rock stratum. – Soil texture, color, mottling and moisture content. – Rock type, color, conditions, and characteristics.
What are the objectives of foundation?
Purpose. Foundations provide the structure’s stability from the ground: To distribute the weight of the structure over a large area in order to avoid overloading the underlying soil (possibly causing unequal settlement).
What do you mean by sub soil exploration?
Sub soil Exploration??? The process of collection soil data for the assessment soil properties at a site through series of laboratory and field investigation is collectively called Sub-soil Exploration Enables the engineers to draw soil profile indicating the sequence of soil strata and the properties of soil involved. 4.
What is the purpose of a soil exploration programme?
A detail soil exploration programme involves deep boring, field tests and laboratory tests for determination of different properties of soils required for the design of any structure. (i) To determine the basic properties of soil which affect the design and safety of structure i.e., compressibility, strength and hydrological conditions.
How are soil investigations used in geotechnical engineering?
Soil investigations are done to obtain the information that is useful for one or more of the following purposes. 1. To know the geological condition of rock and soil formation. 2. To establish the groundwater levels and determine the properties of water. 3. To select the type and depth of foundation for proposed structure 4.
How are field tests used to study subsoil?
Simple field tests such as penetration methods, sounding methods, geophysical methods are performed to get the relative density of soils, strength properties, etc. The data collected about subsoil should be sufficient enough to design and build light structures.
