PSK Infrastructures Highway Site Engineer Interview Questions and Answers

Gradation for GSB refers to the particle size distribution of Granular Sub Base material.

• Gradation for GSB is typically specified by the percentage of various particle sizes present in the material.

• The gradation helps in determining the suitability of GSB for its intended use in road construction.

• Common gradation requirements for GSB include limits on the percentage of fines, coarse aggregates, and other specific sizes...read more

The width of the embankment top layer can be calculated using trigonometry.

• Use trigonometry to calculate the width of the embankment top layer.

• The width can be calculated using the formula: width = 2 * height * tan(angle)

• In this case, the angle is the angle of repose (ogl) which is typically around 30-45 degrees.

Different types of sieves for WMM gradation include 80mm, 40mm, 20mm, 10mm, and 4.75mm.

• 80mm sieve

• 40mm sieve

• 20mm sieve

• 10mm sieve

• 4.75mm sieve