Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Solved Assignments
Asked Questions
Answered Questions
define construction damage - underwater inspection of bridgeconstruction damage can result from improper procedures during the construction phase
define structural damage - underwater inspection of bridgestructural damage to the substructure below waterline can be classified as underi
method of greasing greasing of fixed end requires 20 to 25 minutes the lifting is hardly 10 mm ensuring that the gap is created between saddle block
define cast iron substructure - inspection of bridgecast iron also has the problem of corrosion due to atmosphere which is similar to that of steel
cleaning and greasing of rocker amp roller bearings of open web through girders in case of standard open web through girders no separate jacking
define overloading - deterioration in steelsteel structural elements are sensitive to impact damage from moving vessels and other types of accidental
define the fatigue failure - underwater inspection of bridgefatigue failure results in the fracture of structural members as a consequence of
cleaning and greasing of steel sliding bearings following equipments are required for greasing of steel sliding bearings1 jacks 50 ton capacity - 2
define structural connection loosening - deterioration in steelstructural connections joined together by rivets or bolts have a tendency to work
q lifting of girderslifting of girders for greasing the bearings girders are required to be lifted but the gap between the bottom flange of plate
define abrasion of steel structuresabrasion of steel structures can generally be recognised by a worn smooth polished appearance of the surface
explain the corrosion by the action of bacteriacorrosion can also be accelerated by the action of bacteria in the absence of oxygen
q maintenance of steel bearingscleaning and greasing of bearings is one of the important maintenance works to avoid premature failure of bearings and
define the predominant factor in atmospheric corrosionthe predominant factor in atmospheric corrosion in areas located above splash zone is moisture
define the categories of corrosion of steel structures corrosion of steel structures can be classified as under- atmospheric
define corrosion - deterioration of steel structurescorrosion is the principle cause of deterioration of steel structures corrosion of steel is an
define types of deterioration in steel substructurethere are 5 major types of deterioration in steel substructure in the marine environment-
define steel substructure - underwater inspection of bridgesteel is used as a structural material and as external protective cladding on concrete
define masonry substructure- underwater inspection of bridgein early days masonry particularly stone masonry was extensively used for bridge piers
define marine growth - underwater inspection of bridgegenerally in seawater marine growth takes place acid generated by the marine growth attacks
define contaminants - underwater inspection of bridgethere are various substances that may be inadvertently incorporated into the concrete matrix eg
define alkali aggregate reaction - chemical deteriorationsometimes high alkali cement reacts with minerals in certain aggregates and forms expansive
define carbonation - underwater inspection of bridgecarbon dioxide is present in the air and attacks the concrete directly it has the effect of
define chlorides - underwater inspection of bridgechlorides do not attack plain concrete when present in the concentrations that normally exist in
define sulphate attack - underwater inspection of bridgecement contains a proportion of tricalcium aluminates which takes part in the hydration