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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.
A strip load of considerable length and 1.5 m width transmits a pressure of 150 kN/m 2 to the underlying soil. Verify the maximum principal stress at 0.75 m depth below the footin
Define Inspection of Steel or Cast Iron Substructures? Corrosion is the principal cause of deterioration in steel waterfront substructures. On bare un-protected steel pilings,
Project specifications require a relative compaction of 95% (modified Proctor). Construction of a highway embankment requires 10,000-yd 3 of fill. The borrow soil has an in-situ
Q. Define Hammer efficiency and coefficient of restitution? Hammer efficiency refers to ratio of kinetic energy of hammer to the rated energy (or potential energy). Basically i
Spalling reinforcement for pre stressing works in anchor blocks Reinforcement of anchor blocks in prestressing works usuallycomprises equilibrium reinforcement, bursting reinfo
Q. Illustrate Concept of filter design? The material used for filter should satisfy the following normal criteria a. Filter material is more pervious than the base material
Q. Show the Silt curtain touching seabed? Silt curtains are impermeable vertical barriers extending from seawater surface to their designed depths. Curtains are held in a verti
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