b). An overhead water reservoir is to be constructed at KAAF campus to cater for its water problem. This reservoir will exert a pressure of 200kPa on to a Smx4m rectangular footing. A soil investigation carried out at the site revealed a soil grofile consisting of 4m thick soft elay sandwiched between medium dense sand as shown in figure 3. The water table is located 2m below the earth surface. Laboratory consolidation data obtained for the nomally consolidated soft clay indicated the following properties. Initial void ratio, e,1.11 Compression index, C 0.30 Coefficient of consolidation, Cv-0.60m2/yr I. Determine the net inerease in stress due to the water reservoir at the center of the clay stratum II. Develop an expression for obtaining the geostatie stress (in-situ vertical stress at the center of the clay layer and hence determine its value. II. Estimate the degree of consolidation of the soft clay at a depth 10m below the center of the footing Syrs after the loading assuming the layer is doubly drained. IV. Determine the total consolidation settlement of the soft elay layer below the center of the footing due to the water reservoir if the increase in stress due to water reservoir is 60kpa. 0.0 T Y=18KN/m 2.0m 3.0m medium dense sand Ysat=19.5kN/m 8.0m- 2.0m soft clay Ysnt15kN/m 12.0m medlum dense Ysat 19.5kN/m sand 25.0m
b). An overhead water reservoir is to be constructed at KAAF campus to cater for its water problem. This reservoir will exert a pressure of 200kPa on to a Smx4m rectangular footing. A soil investigation carried out at the site revealed a soil grofile consisting of 4m thick soft elay sandwiched between medium dense sand as shown in figure 3. The water table is located 2m below the earth surface. Laboratory consolidation data obtained for the nomally consolidated soft clay indicated the following properties. Initial void ratio, e,1.11 Compression index, C 0.30 Coefficient of consolidation, Cv-0.60m2/yr I. Determine the net inerease in stress due to the water reservoir at the center of the clay stratum II. Develop an expression for obtaining the geostatie stress (in-situ vertical stress at the center of the clay layer and hence determine its value. II. Estimate the degree of consolidation of the soft clay at a depth 10m below the center of the footing Syrs after the loading assuming the layer is doubly drained. IV. Determine the total consolidation settlement of the soft elay layer below the center of the footing due to the water reservoir if the increase in stress due to water reservoir is 60kpa. 0.0 T Y=18KN/m 2.0m 3.0m medium dense sand Ysat=19.5kN/m 8.0m- 2.0m soft clay Ysnt15kN/m 12.0m medlum dense Ysat 19.5kN/m sand 25.0m
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:b). An overhead water reservoir is to be constructed at KAAF campus to cater for its water problem.
This reservoir will exert a pressure of 200kPa on to a Smx4m rectangular footing. A soil investigation
carried out at the site revealed a soil grofile consisting of 4m thick soft elay sandwiched between
medium dense sand as shown in figure 3. The water table is located 2m below the earth surface.
Laboratory consolidation data obtained for the normally consolidated soft clay indicated the
following properties.
Initial void ratio, e-1.11
Compression index, C-0.30
Coefficient of consolidation, Cv-0.60m2/yr
I.
Determine the net increase in stress due to the water reservoir at the center of the clay stratum
II.
Develop an expre ssion for obtaining the geostatic stress (in-situ vertical stress at the center of
the clay layer and hence determine its value.
III.
Estimate the degree of consolidation of the soft clay at a depth 10m below the center of the
footing Syrs after the loading assuming the layer is doubly drained.
IV.
Determine the total consolidation settlement of the soft clay layer below the center of the
footing due to the water reservoir if the increase in stress due to water reservoir is 60kpa.
0.0 T
Y=18kN/m
2.0m
-
medium dense
A
3.0m
Ysat-19.5kN/m
sand
8.0m-
2.0m
soft clay
Ysat-15kN/m
12.0m
Ysat= 19.5kN/m
medlum dense
sand
25.0m
Figure 3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 4 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning