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Define Abrasion of steel structures?
Abrasion of steel structures can generally be recognised by a worn, smooth, polished appearance of the surface. Abrasion is caused by continual rubbing of adjacent moving steel surfaces, or by the exposure of structural components to wave action in areas of sandy bottom. Steel sheet piling and pile-supported structures are particularly susceptible to sand abrasion in exposed locations. Abrasion of steel structures is a problem because it removes both protective coatings and protective layers of corrosion products, thus accelerating corrosion.
Loss of prestress due to creep of concrete Creep of concrete means time dependent deformation of concrete. Its effect depends upon the interval of time for which the member is
Tests on Stones To ascertain the needed properties of stones, described tests can be conducted: A. Crushing strength test B. Water absorption test C. Abrasion te
A concrete contractor historical records show that the construction duration for a cast-in-place foundation formwork is 1,000-SF/crew-day. Determine the number of days a 200,000-SF
Define the Hazardous Waste 1. Any waste or combination of waste that poses a substantial danger now or future to humans, plants, and animals without special precautions. 2.
Q. Explain Gauge Conversion? All the advanced countries of the world have recognized the need for uniformity of gauge. There are a number of problems that have cropped up on th
Calculate the Poissons Ratio: In separate experiments, Young's Modulus and Rigidity Modulus of a material have been determined as 120 GPa and 50 GPa respectively. Calculate th
Q. Permanent Repairs to rail fracture? (i) If the fracture is such that, wide gap A T welding ban be adopted, then the total length of fractured ends to-be cut shall be equal t
The problem in the link below. ">http://www.expertsmind.com/questions/plot-vertical-displacement-cantilever-beam-30134382.aspx#
Concordant Prestressing In this type of prestressing, tendons follow a concordant profile. The concordant profile of tendons does not change the support reactions in a statica
Explain term - losses of prestress We know that with time, tendons lose some of their initial prestress (at the time of transfer of prestress). This is termed as 'losses of pre
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