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QuestionGeneral requirement for Civil Engineering Works in 1992 Edition, Clause 15.09 details that tying wires for strengthening adjacent to and above Class F4 and F5 closes must be stainless steel wires. Give genuine reasons? AnswerIf plain steel tying wires are utilize for reinforcement adjacent to Class F4 and F5 closes, it poses problem of rust staining that may impair appearance of uncovered concrete surfaces. Speed of corrosion of plain steel tying wires is alike to regular steel reinforcement. Yet, for tying wires with extremely tiny diameter, upon long exposure it stands a high possibility of rusting finally and this rust will stain formwork and significantly involve concrete finish. Then, stainless steel tying wires are specified for locations in vicinity of high excellence of finishes to keep away from rust staining by corroded typing wires.
Question If concrete compression test not pass, So Schmidt hammer test will be adopted as an alternative test to confirm concrete strength ? Answer Schmidt hammer test is
cooke''s reversable level
Define the Spalling - underwater inspection of bridge? A spall is a roughly circular or oval depression in the concrete. Corroding reinforcement can cause spalls and reinforcin
A sample in a variable head permeameter is 8 cm in diameter and 10 cm high. The permeability of the sample is estimated to be 10 × 10 -4 cm/s. If it is desired that the head in th
Light-weight Aggregate Prestressed Concrete The use of light-weight aggregate concrete for prestressed concrete construction is well established. The main advantage of light-
tack rivet figures with connections
Q. Underwater problems in bridge construction? The major bridge construction materials are steel and concrete. In the past, stone and brick masonry, with lime mortar as binding
Q. What are basic types of elastomeric bearings? Three basic types of elastomeric bearings are used. 1. Plain elastomeric pads 2. Steel reinforced elastomeric pads 3.
Estimate the ground level NO concentration: a. Directly downwind at a distance of 2 km b. At the point downwind where NO is maximum c. At a point located 2 km downwind and 0.1 km
types,
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