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i. The following information is collected from rock coring process in which the total core advance was 65 cm. Core Recovery (cm) 20 7 Calculate: a) The total core recovery b) The core recovery ratio c) The rock quality designation d) State the rock mass quality 6 10 16

i. The following information is collected from rock coring process in which the total core advance was 65 cm. Core Recovery (cm) 20 7 Calculate: a) The total core recovery b) The core recovery ratio c) The rock quality designation d) State the rock mass quality 6 10 16

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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i. The following information is collected from rock coring process in which the total core advance was 65 cm. Core Recovery (cm) 20 7 Calculate: 11. a) The total core recovery b) The core recovery ratio c) The rock quality designation d) State the rock mass quality 6 10 16 A shear vane of length 150 mm and diameter 50 mm was used to measure the shear strength of saturated clay. The torque required at failure of the clay was 50 N-m. a) Assuming a triangular stress distribution along the vane ends, estimate the shear strength of the clay in kPa. b) On this clay, how deep can excavation advance without lateral support? Assume y= 18 kN/m³.
Transcribed Image Text:i. The following information is collected from rock coring process in which the total core advance was 65 cm. Core Recovery (cm) 20 7 Calculate: 11. a) The total core recovery b) The core recovery ratio c) The rock quality designation d) State the rock mass quality 6 10 16 A shear vane of length 150 mm and diameter 50 mm was used to measure the shear strength of saturated clay. The torque required at failure of the clay was 50 N-m. a) Assuming a triangular stress distribution along the vane ends, estimate the shear strength of the clay in kPa. b) On this clay, how deep can excavation advance without lateral support? Assume y= 18 kN/m³.
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