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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.
Given: pretensioned rectangular beam b=6" h=20" f'c=4000psi f'ci=3000psi fti=.165ksi fts=.38ksi fci=1.8ksi fcs=1.8ksi R=0.80 Required: (a)Pi and e to maximize Md+
Explain Subcritical flow and Supercritical flow Subcritical flow: The depth of flow is greater than critical depth and the velocity of the fluid is slow. Also termed "tranquil"
Harbours: Types of Harbours There are two types of harbours, viz : (a) Natural harbour, which is protected from storms and waves by the natural configuration of t
write a short note on angular messurement using stations?
WHY WE ARE USING MAMENT OF INERTIA IN STRAIN ENERGY STRUCTURE
what is the design of syphon
Question Can all utility detectors detect depth of utilities ? Answer In Hong Kong, underground utility detectors are as a rule separated into two categories- electro
length of the line measured with 20m chain found to be 250m.calculate true length if the chain was 10cm long
An unconfined aquifer is called to be 32 m thick below the water table. A constant discharge of 2 cubic metres per minute is pumped out of the aquifer by a tubewell till the water
A steam turbine with base 6 m × 3.6 m weighs 10,000 kN. It is to be placed on a clay soil with c = 135 kN/m 2 . Find the size of the foundation needed if the factor of safety is to
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