6.5 A site is underlain by about 14 m of hydraulic fill sand with the following properties. Grain size characteristics: Din <0.074 mm D300.14 mm Do = 0.17 mm Do = 0.20 mm Saturated unit weight = 18.8 kN/m³ Average uncorrected SPT resistance = 6 blows/ft Average cone tip resistance = 3 MPa The groundwater table is located at a depth of 2m. (a) Estimate the shear wave velocity of the hydraulic fill at a depth of 5 m by as many proce- dures as the available data will support. (b) Shear wave velocity measurements at this site have indicated hydraulic fill shear wave velocities ranging from about 120 m/sec - 200 m/sec at 5 m depth with an average value of about 170 m/sec. Comment on the level of agreement between the estimated shear wave velocities from Part (a) and the measured shear wave velocities.

6.5 A site is underlain by about 14 m of hydraulic fill sand with the following properties. Grain size characteristics: Din <0.074 mm D300.14 mm Do = 0.17 mm Do = 0.20 mm Saturated unit weight = 18.8 kN/m³ Average uncorrected SPT resistance = 6 blows/ft Average cone tip resistance = 3 MPa The groundwater table is located at a depth of 2m. (a) Estimate the shear wave velocity of the hydraulic fill at a depth of 5 m by as many proce- dures as the available data will support. (b) Shear wave velocity measurements at this site have indicated hydraulic fill shear wave velocities ranging from about 120 m/sec - 200 m/sec at 5 m depth with an average value of about 170 m/sec. Comment on the level of agreement between the estimated shear wave velocities from Part (a) and the measured shear wave velocities.

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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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

6.5 A site is underlain by about 14 m of hydraulic fill sand with the following properties.
Grain size characteristics: Dio <0.074 mm
D30 = 0.14 mm
Dso = 0.17 mm
Do = 0.20 mm
Saturated unit weight = 18.8 kN/m²
Average uncorrected SPT resistance = 6 blows/ft
Average cone tip resistance = 3 MPa
The groundwater table is located at a depth of 2m.
(a) Estimate the shear wave velocity of the hydraulic fill at a depth of 5 m by as many proce-
dures as the available data will support.
(b) Shear wave velocity measurements at this site have indicated hydraulic fill shear wave
velocities ranging from about 120 m/sec - 200 m/sec at 5 m depth with an average value of
about 170 m/sec. Comment on the level of agreement between the estimated shear wave
velocities from Part (a) and the measured shear wave velocities.

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