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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.
Joints in box culverts and channels - necessity of water tightness The joints for box culverts and channels must be capable of accommodating movements arising from moisture an
Explain the Categories of Air Pollution 1. Ambient Air Pollution Out door environment o Involves complex array of sources and pollutants, meteorological transport of th
What is grading modulus?
LOSS OF PRESTRESS DUE TO SHRINKAGE OF CONCRETE We know that concrete shrinks in volume when it dries up. This volume reduction takes place in the form of reduction of all dime
Allowable Strength Design (ASD) Process: - Apply service loads with no load factors - Assume linear elastic analysis of structure - Calculated stresses shall not excee
define and types
Q. Discontinuity of joint – position of bearing? Expansion joints in a bridge structures cater for movements inlongitudinal, transverse, vertical and rotational forms. Layout a
Question What are main dissimilarities in applications between pipe culverts and box culverts ? Answer Essentially, culvert resources covered hydraulic structure that conveys fl
Joints in Concrete Pavements: Concrete pavements in India are of the jointed plain (unreinforced type). The following types of joints are needed in them : (a) Transverse C
A machine of 850 kg mass is acted upon by an external force of 1355 N at a frequency of 650 rpm. To reduce the effects of vibrations on the supporting structure, isolators having s
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