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Define Concrete Surface Finish - Limitations of Ultrasonic System?
The smoothness of the surface under test is important to ensure proper acoustical contact between the transducer and the concrete surface. A coupling agent, such as silicon grease, must be placed between the transducer and concrete surface to ensure transmission of maximum energy. If a coupling agent is not used, the transmitted signal will be severely attenuated which results in large errors in the measurement of transit time.
Strength of Concrete at the Transfer Stage Concrete strength in the member at the transfer stage should conform to the design requirements. The frequency of the sampling and t
Improvements to Public Bus Transport: Since buses carry a large number of passengers, improvements in bus transport is a cheap solution. Some of the possible improvements are
i need simple ans for this question tell me precaution of dampness
Operations invending in chain survey .....
Q. Maintenance of steel bearings? Cleaning and greasing of bearings is one of the important maintenance works to avoid premature failure of bearings and reduce recurring heavy
What are borrow pits?
Planning of Water Transport Facilities: Definition of Terms In water transport system, a number of terms are used. It is necessary for a civil engineer to know the pr
Q. Indirect tensile strength in water-retaining structures ? Crack width formation is dependent on the early tensile strength of concrete. Principle of critical steel ratio als
Q. Increase in velocity of water due to afflux? Specific energy E f in m per m 3 of flow is the energy measured with respect to bottom and hence comprising potential head D a
show that Y = 4e2x - 2e-3x is a solution of initial-value problem (d2y)/(dx2)+ (dy)/(dx) - 6y=0 ; y(0)=6 ; y’(0)=2 . is Y = 2e2x - 4e-3x also a solution of this proble
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