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Define Reinforcing Steel - Limitations of Ultrasonic System?
The sound velocity measurement taken parallel to the reinforcing bars embedded in the concrete will be markedly higher because sound velocity in steel is 1.2 to 1.9 times the velocity in concrete. The effect is small while the axis of the rebar is perpendicular to the direction of sound propagation and the correction factors are of the order of only 1 to 4% depending on the quality of concrete. It is, therefore, recommended that sound trans- mission paths should be chosen, based on available drawings that avoid the influence of the rebar. If drawings are not available, rebar-mapping equipments may be used to verify the presence and orientation of embedded rebars.
Define Mechanical tool for underwater inspection of bridge? Mechanical devices that involves a Schmidt Test Hammer for computing concrete surface hardness, and rotary coring eq
Calculate the Cubic Volume of Crushed Stone A symmetrical running track is being constructed in the configuration and dimensions as shown. The cubic volume (CY) of crushed st
What is civil engineering?
Univariate normal distribution: Let X = (X I , X 2 , ..., X n ,) has the multivariate normal distribution (5.26) of Section 5.4. Show that Y = a X ' follows a univariate norma
What is Partial Prestressing It is a form of prestressing in which tensile stresses are permitted, upto a limited extent, in concrete under working loads. As the permitted tens
System A system (often called a closed system) is any collectionof matter within a prescribed boundary, but no matter may enter or leave the system. Note 1. That the bo
What do you understand by Pressure line If we determine the locations of resultant force at various sections of a pre-stressed beam, as in Example, we can draw a curve showing
Q. Butt weld – from one side vs from both sides? In the design of butt weld strength, it's normally presumed that its strength is at least equivalent to parent metal. To improv
what is the heat of hydration and gel space ratio?
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