0 Design CBR of soil 10 Category of road national highway two lane single

# 0 design cbr of soil 10 category of road national

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Period of construction = 3 years, Annual growth rate - 8.0%, Design CBR of soil = 10%, Category of road = national highway, two lane single carriageway, Design life = 10 years, VDF = 3.5, LDF = 0.75 (75%). Calculate the overall thickness and individual layer thickness using pavement design chart. 4.Distinguish between flexible pavement and rigid pavement. 5.Determine the warping stresses at the interior, edge and corner in a 20 cm thick C.C. pavement with transverse joints at 8.5 m interval and longitudinal joints at 3.6 m intervals. The modulus of sub-grade reaction k = 6.9 kg/cm3. The temperature differential is 0.6°C/cm of the slab thickness. Take a = 15 cm, e = 10 x 10"6/°C, E = 3 x I05 kg/cm2, i = 0.15. 6.Draw a typical flexible pavement layer indicating the different component layer. Also mention the functions of each component layers. UNIT 7 1.Explain the construction steps of 1) Water bound Macadam; ii) Cement, concrete pavement 2.Explain the important design steps for longitudinal drains of a road to drain off surface water. 3.Explain the construction steps for Bituminous concrete.What are its requirements and specifications?4.Differentiate between seal coat and prime coat 5.Explain the construction steps for wet mix macadam base course. What are its requirements and specifications? 6.Explain the construction steps for dry lean concrete sub base. 7.Explain significance of highway drainage. UNIT 8