TGPSC HMWSSB Manager 2015 Paper 2 · Question 41

Question 41 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 2 (Civil Engineering) (1 November 2015). Try it first, then open the answer and explanation.

1. Manager 2015 Paper 2 (Civil) · Q41 · Geotechnical Engineering · Foundation Engineering

   The observations of a Standard Penetration Test are reported as 10/15/20. Assuming correction for overburden is not required and correction for dilatancy only is required, the corrected N-value is:

   1. 45
   2. 35
   3. 25
   4. 15
   Show answer

   Answer: (3) 25

   The first 150 mm is the seating drive and is ignored, so observed N = 15 + 20 = 35. Since N > 15, the dilatancy correction gives N' = 15 + (N − 15)/2 = 15 + (35 − 15)/2 = 25.

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