The slump test is essentially a measure of consistency or the wetness of the concrete mix. This test is carried out with a steel mould in the form of a frustrum of cone whose top diameter is 100 mm, bottom …
The essential difference between flexible and rigid pavement are as follows : 1) The flexible pavements have low or negative flexural strength and are rather flexible in their structural action under the loads.The rigid pavements posses noteworthy flexural strength or …
A pavement which consists of a mixture of asphaltic or bituminous material and aggregate placed on a good quality and compacted granular material is termed as flexible pavement. The water bound macadam is an example of flexible pavement. The pavement …
The roads whose wearing course consists of clean crushed aggregates mechanically interlocked by rolling and bound together with filler material and layer and laid on a well compacted base course is called water bound macadam road. The strength of a …
The magnetic needle is seriously deflected from its normal position when it is under the influence of external attractive forces. Such a disturbing influence is known as local attraction. The term is also used to amount of deviation of the …
The following are the two fundamental principles of surveying which should be kept in view while determining the relative position of points on the surface of the earth. 1) To work from whole to part.The working from whole to part …
The formation, growth and collapse of vapour filled cavities or bubbles in a flowing liquid due to local fall in fluid pressure is called cavitation. The cavitation in a hydraulic machine affects in the following ways: a) It causes noise …
A channel is said most economical in hydraulics or fluid mechanics ifa) It gives maximum discharge for a given cross sectional area and bed shape.b) It has minimum wetted perimeterc) It involves lesser excavation for the designed amount of discharge …
When a liquid flowing through a long pipe is suddenly brought to rest by closing the valve at the end of a pipe, then a pressure wave s high intensity is produced behind the valve. This pressure wave of high …
The type of flow of a liquid depends upon the manner in which the particles unite and move. though there are many types of flows, yet the following are important: 1) Uniform flow : A flow, in which the liquid …