What is an Outcrop in the Rocks? What is its significance in civil engineering?
There are a few parameters that you can use to judge whether a soil is organic or inorganic. Organic soils have fairly lower bulk densities than inorganic soils (0.2 to 0.3 as compared to 1.2 to 1.5). Organic soils will feel significantly lighter. Organic soils can retain way more water than inorganRead more
There are a few parameters that you can use to judge whether a soil is organic or inorganic.
Organic soils have fairly lower bulk densities than inorganic soils (0.2 to 0.3 as compared to 1.2 to 1.5). Organic soils will feel significantly lighter.
Organic soils can retain way more water than inorganic soils (in proportions if their own densities).
The color of organic soils is usually darker than inorganic soils. But this is not a good parameter for comparison since the color is affected by other things as well apart from organic nature.
Cation exchange capacity (CEC) is higher in organic soils (4 times as that of inorganic soils). This means that organic soils will have a lower pH, higher exchangeable hydrogen, more calcium and magnesium ions, and higher exchangeable calcium content.
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Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulderRead more
Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulder fields of Blackrock.
Most civil engineering projects involve some excavation of soils and rocks, or involve loading the Earth by building on it. In some cases, the excavated rocks may be used as constructional material, and in others, rocks may form a major part of the finished product, such as a motorway cutting or the site f or a reservoir. The feasibility, the planning and design, the construction and costing, and the safety of a project may depend critically on the geological conditions where the construction will take place. This is especially the case in extended ‘greenfield’ sites, where the area affected by the project stretches for kilometres, across comparatively undeveloped ground. Examples include the Channel Tunnel project and the construction of motorways. In a section of the M9 motorway linking Edinburgh and Stirling that crosses abandoned oil-shale workings, realignment of the road, on the advice of government geologists, led to a substantial saving. In modest projects, or in those involving the redevelopment of a limited site, the demands on the geological knowledge of the engineer or the need for geological advice will be less, but are never negligible. Site investigation by boring and by testing samples may be an adequate preliminary to construction in such cases.
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