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Concrete Pavement:
Thickness
The thickness of concrete pavements is determined from the stresses induced due to loads and temperature. The thickness adopted is generally 30-35 cm for highways and 15-20 cm for low volume roads. The concrete used is of high strength and is of M-40 grade for highways and not less than M-35 for low volume roads.
A sub-base of 100-150 mm thick dry lean concrete (DLC) of strength M-10 is provided below the pavement layer. An antifriction layer of plastic sheet 125 micron is provided between the slab and DLC. A drainage layer is provided for draining any water that enters the sub-grade.
Explain Stopping Sight Distance on Horizontal Curve Section Obstructions along the inside of curves can limit the available (chord) sight distance. A curve must be designed tha
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Given: pretensioned rectangular beam b=6" h=20" f'c=4000psi f'ci=3000psi fti=.165ksi fts=.38ksi fci=1.8ksi fcs=1.8ksi R=0.80 Required: (a)Pi and e to maximize Md+
Q.What Hydrographic data required for Design of bridge? (i) Design discharge for bridge waterway and foundation with corresponding high flood levels. Frequency curve for annual
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Thermodynamics is concerned with the conversion ofheat into mechanical energy or vice versa. Heat usually generated through combustion of fossil fuelor nuclear reaction. Exa
slabs and beam formwork
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Describe the various steps in embankment construction.
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