An 8 m wide bituminous concrete pavement of a state highway is to be constructed in a heavy rainfall region. What should be the height of the crown with respect to the edges if cross fall of 1 in
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- A rigid pavement 160-mm thick and 8.10-m wide is to be provided with a center longitudinal joint using 12.0-mm reinforcing steelbar. The concrete’s unit weight is 24kN/m3 with slab’s coefficient of friction on the grade is with the assumption that the allowable working stress intension for the steelbars is 138MPA, determine the spacing of the longitudinal bars in mm.A six-lane concrete roadway is being designed for a metropolitan area. This roadwaywill be constructed on a subgrade with an effective modulus of subgrade reaction k of170 lb/in3. The ESAL used for the design period is 2.5 106. Using the AASHTOdesign method, determine a suitable thickness of the concrete pavement (to thenearest 1⁄2 inch), provided that the working stress of the concrete to be used is650 lb/in2 and the modulus of elasticity is 5 106 lb/in2. Assume the initial serviceability is 4.75 and the terminal serviceability is 2.5. Assume the overall standard deviation, So, as 0.35, the load transfer coefficient J as 3.2, the drainage coefficient, Cd as1.15, and R as 95%.20-14 An existing rural four-lane highway is to be replaced by a six-lane divided expressway(three lanes in each direction). Traffic volume data on the highway indicate that theAADT (both directions) during the first year of operation is 24,000 with the followingvehicle mix and axle loads.Passenger cars…Determine the thickness of the rigid pavement of the proposed Llanera Road to carry a maximum wheel load of 60KN neglect the effect of dowels fc' = 20MP.. Allowable tensile stress of concrete pavement is 0.06fc'. answer should be in mm.
- A 33 mm thick flexible pavement carrles a static wheel load having a circular contact area of the tire ls 75 476 m㎡, the transmitted load is distributed across the wider area of the sub grade at an angle of 45°. The subgrade bearing value Is 180.0 Kpa, while that of the base is 450,0 Kpa.Sketch &Design the thickness of the base.4. Determine the thickness of a rigid pavement of the proposed Nagtahan Road to carry a maximum wheel load of 60kN. Neglect the effect of dowels. fc' = 21MP.. Allowable tensile stress of concrete pavement is 0.07fc'Show complete solution with clear explanation thanks A rigid pavement is to be used to carry a wheel load of 49KN, the allowable tensile stress of the concrete is 1.4MPa. Sufficient dowels are used across the joints. Design the center of the thickness of the pavement at the center and base
- A six-lane concrete roadway is being designed for a metropolitan area. This roadway will be constructed on a subgrade with an effective modulus of subgrade reaction k of 170 lb/in3. The ESAL used for the design period is 2.5 x 106. Using the AASHTO design method, determine a suitable thickness of the concrete pavement (to the nearest 1⁄2 inch), provided that the working stress of the concrete to be used is 650 lb/in2 (i.e. S’c) and the modulus of elasticity is 5 x 106 lb/in2. Assume the initial serviceability is 4.75 and the terminal serviceability is 2.5. Assume the overall standard deviation, So, as 0.35, the load transfer coefficient J as 3.2, the drainage coefficient, Cd as 1.15, ZR as -1.645 and R as 95%.A six-lane concrete roadway is being designed for a metropolitan area. This roadway will be constructed on a subgrade with an effective modulus of subgrade reaction k of 170 lb/in3. The ESAL used for the design period is 2.5 ? 106. Using the AASHTO design method, determine a suitable thickness of the concrete pavement (to the nearest 1⁄2 inch), provided that the working stress of the concrete to be used is 650 lb/in2 and the modulus of elasticity is 5 ? 106 lb/in2. Assume the initial service- ability is 4.75 and the terminal serviceability is 2.5. Assume the overall standard devi- ation, So, as 0.35, the load transfer coefficient J as 3.2, the drainage coefficient, Cd as 1.15, and R as 95%.A six-lane concrete roadway is being designed for a metropolitan area. This roadway will be constructed on a subgrade with an effective modulus of subgrade reactionk of 170 Ib/in^3. The ESAL used for the design period is 6.9* 10^6. Using the AASHTO design method, determine a suitable thickness of the concrete pavement (to the nearest 12 inch). provided that the working stress of the concrete to be used is 650 lb/in2 and the modulus of elasticity is 5 *10^6 Ib/in^2. Assume the initial serviceability is 4.75 and the terminal serviceability is 2,5. Assume the overall standard deviation, So, as 0.35, the load transfer coefficient J as 3.2. the drainage coefficient. Cd as 1.15. and R as 95%. Answer:
- Find the safe static wheel load that a 360 mm thick rigid pavement could carry without any dowel across the joints if the allowable tensile stress of concrete is 1.5 MPa.Show complete solution and clear explanation thank you A flexible pavement having a thickness of 46mm carries a static wheel load of W. The circular contact has an equivalent radius of 150mm. If the load W is assumed to be transmitted across a wide are of subgrade at an angle of 45 degrees compute the value of the wheel load W if the bearing stress of the base is 0.42 MPaDetermine the thickness of a rigid pavement with a wheel load capacity of 54 kN, if the allowable tensile stress of the concrete is 1.6 MPa. Neglect the effect of dowels.