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Define Black & White Fathometer - Non-Destructive Testing?
Most commonly used sounding device is black & white fathometer. The units are compact and easy to use. They consist of a transducer, which is suspended in the water, a sending/receiving device, and a recording chart, which displays the depth on paper. High frequency sound waves, generally in the range of 200 kHz, emitted from the transducer travel through the water until they strike the channel bottom and are reflected back to the transducer. The fathometer measures the time it takes the sound waves to return to the transducer, and converts that time to the depths of water, which are displayed on a graphic recorder in the form of a continuous plot of the channel bottom.
Explain the Classification of Solid Waste Solid waste can be classified in several different ways. Putrescible waste - Animal and Vegetable waste From Cooking and
A rectangular area 4 m × 6 m carries a uniformly distributed load of 100 kN/m 2 at the ground surface. Estimate the vertical pressure at a depth of 6 m vertically below the centre
Q. What do you mean by M A S Accounts? This stands for material at site account. This is a suspense head of account that is maintained to watch actual consumption of materials
Determine the stresses set up in the brass: A compound bar is constructed from three bars 50 mm wide by 12 mm thick fastened together to form a bar 50 mm wide by 36 mm thick.
Define Abrasion - underwater inspection of bridge? Deterioration of substructures by abrasion is caused by wave action, the velocity of the currents and the action of suspended
what is couple?
Question In soil compaction test , if test result exceeds 100%, should engineers accept result? Answer Soil compaction is method of increasing soil density by re
Pre-tensioning systems In the previous unit we have seen different steps in a pretensioning operation. Tendon wires or strands (formed as a rope type arrangement made of sever
find out the interior angleS with diagrame LINE AB, BC, CD, DE, EA Fore bearing 60''30" , 122'' , 46'' , 205''30" , 300''
give a short description about water supply system
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