Ventilation is defined as the process by which stale air inside an enclosure is replaced by fresh air from outside.
Civil
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There are mainly three types of surveys which are as follows: Reconnaissance survey, Detailed survey, Preliminary survey etc.
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Evaporation: In this process due to solar radiation, during the day time the water in the liquid form is transformed into gaseous form.
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Seismic waves are the waves which are formed by sudden breaking of rock within the earth. There are two types of waves: Body and Surface waves.
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The principle of under-reamed pile foundations is the anchoring of the superstructure at a depth where the volume changes of soil are negligible.
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In Reaction turbine, Pressure energy is first converted into kinetic energy before supplied to runner. It works on impulse reaction principle.
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Piers are single unit supports carrying heavy loads and transferring them to deep-seated layers of soil or rock.They are of three types.
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A cofferdam is a temporary structure designed to keep water and soil out of the excavation in which a bridge pier or other structure is built.
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“Caissons” means box. Such box can be prefabricated on shore and then floated to the desired site, and is allowed to seat on prepared base.
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Well foundation is deep one which generally provided for construction of bridges.World famous “Taj mahal” stands on well foundation.
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Workability of concrete is defined as that property of fresh concrete which determines the ease and homogeneity and finished.
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Mineralogy is the study of minerals. It deals with understanding their origin, physicochemical properties, magnetic and optical properties.
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Shoring is a temporary structure to support temporarily an unsafe structure. Shoring is provided to a structure under following circumstances.
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Canal fall is a structure which has been constructed across a channel. To permit lowering down of its water level and to dissipate the surplus energy passed by the falling water.
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White wash is a mixture of slaked lime with water for covering to the plastered or pointed surface applied in one ,two or three coat.
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Temporary structure or platform constructed very close to the wall, is in the form of timber or steel framework, commonly called scaffolding.
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“Varnish is a homogeneous colloidal dispersion-solution of natural or synthetic resins in oil or thinner or both”.
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A stair may be defined as series of steps suitably arranged for the purpose of connecting different floors of a building.
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Settlement is the vertical downward movement of the loaded base. As a result of this the original depth of soil mass decreases.
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A trap is bent or depressed sanitary fitting which remains full of water. It is used prevent the passage of foul air or gases through it.
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Admixture are the materials used in the cement to modify one or more of its properties in the plastic or hardened state of concrete.
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Folds when crustal rocks are subjected to stress over a period of time, they compress and form folds.
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Shrinkage is the decrease in volume of concrete in the absence of load with time. In the plastic stage concrete shrinks in volume due to absorption of water or loss of water.
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Canal lining is the impervious layer which protects the bed and sides of the canal. Lining is generally a construction of a thin 2.5 to 15 cm thick layer of lining material, generally RCC or CC bricks, stones etc.
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Ventilation is defined as the process by which stale air inside an enclosure is replaced by fresh air from outside.
-
There are mainly three types of surveys which are as follows: Reconnaissance survey, Detailed survey, Preliminary survey etc.
-
Evaporation: In this process due to solar radiation, during the day time the water in the liquid form is transformed into gaseous form.
-
Piers are single unit supports carrying heavy loads and transferring them to deep-seated layers of soil or rock.They are of three types.
-
A cofferdam is a temporary structure designed to keep water and soil out of the excavation in which a bridge pier or other structure is built.
-
Seismic waves are the waves which are formed by sudden breaking of rock within the earth. There are two types of waves: Body and Surface waves.