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State the importance of structural element
If this structural element is used as a beam element, subjected to self load and other imposed transverse loads, then the bottom fibres of the beam shall be subjected to tensile stresses and the top ones to the compressive stresses. Resultant stresses at a section due to pre-stressing and external loads are combined stresses. For calculating these combined stresses we separately calculate stresses produced due to prestressing force and externally imposed loads. Then these separately determined stresses are algebraically added to get combined stresses at a section. Therefore, the following relationship for determination of combined stresses at a fibre of a cross-section (produced due to loads and prestressing force) is used for this case of concentric pre-stressing in a beam element.
Q. Write short note on SKV process of thermit welding? This term is used for welding by Alumino thermic process with short preheat time. The time required for preheat with pet
An undisturbed sample of sand has a dry weight of 18.9 N and a volume of 1143 cm 3 . The solids have a specific gravity of 2.72. Laboratory tests indicate void ratios of 0.40 and 0
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Define Fatigue - Materials The normative view of the stress/strain is found in the example of the paper clip wire experiment. Take a paper clip wire and try to break it by pull
how to measure the waterways of railway bridges
A W12x58 member, which comprises a vertical member in a truss span, is subjected to a factored axial compressive force of 163 kips. The W12x58 section is oriented such that the st
The specific gravity of ferric chloride solution equals 1.3. How much does one gallon of ferric chloride weigh? Solution: ρ ferric chloride /ρ water = 1.3 Conver
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State the term - constant eccentricity A pre-stressed concrete beam has a width of 300 mm and an overall depth of 450 mm. The permissible stresses in tension and compression du
Determine the term - Final Tension The tension in tendons after losses of prestress have taken place is called as final tension. Final tension is taken to be corresponding to
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