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Define Pavement Design - Transportation
1. Asphalt surface
a. Estimate Design Traffic
b. Determine the Structural Number (SN) for the given traffic, roadway, and soil characteristics
c. Compute layer-thickness using the following equation
SN = a1D1 + a2D2 + ...+anDn
Where SN = structural number of the pavement
ai = strength coefficient of the ith layer
Di = thickness of the ith layer in inches
Q. Evaluate the Length of guide bund? For encouraging axial flow through the bridge, upstream length of guide bund may be kept 1.0 to 1.5 times the bridge length and downstream
what is the types of levelling
Q. Calculation of crack widths arising from thermal movement In the calculation of thermal movement, the below formula is used in most codes: w max =s x a x (T 1 +T 2 )/2
Q. Roadworks - filler and binder in bituminous pavement? In bituminous materials, course aggregates perform the bulking action of mixture and contributes to stability of result
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Bituminous Macadam: Bituminous Macadam (BM) is a base course in which coarse aggregates are mixed with a bituminous binder. The mix is open-graded with 20-25 per cent voids.
explain it
stress
Minimum volume of sump volume for pumps Maximum pumping rate = Q P Volume of sump = V Inflow Rate = Q i Cycle Time T c = t 1 + t 2 t 1 = V / Q P - Q i t 2
Question What are major ways to undertake negative skin friction ? Answer (i) Utilize slender pile sections since smaller pile area when subject to same working load
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