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Two meters below the ground surface, a 2x2 m square footing is constructed on NC clayey sand. The layer is subjected to a CPT test, with the results revealing an average cone resistance of 20 Mpa. A layer of hard rock is laid 20 meters below the surface. The service load of 25 ton.f is acting on the footing column. Find the elastic settlement using the generalized elastic method. The water level is at the surface and you can use yw 10 KN/m3. (footing weight is negligible) Hint: use table 4.8 of textbook to find the undrained modulus. TABLE 4.8 ESTIMATING EQUIVALENT SOIL MODULUS, ES, VALUES FROM CPT RESULTS [Adapted from Schmertmann et al. (1978), Robertson and Campanella (1989), and other sources.] USCS Group Symbol Soil Type SW or SP Young, normally consolidated clean silica sands (age < 100 years) Aged, normally consolidated clean silica sands (age > 3,000 years) Overconsolidated clean silica sands SW or SP SW or SP SM or SC SM or SC Normally consolidated silty or clayey sands Overconsolidated silty or clayey sands Esla 2.5-3.5 3.5-6.0 6.0-10.0 1.5 3

Two meters below the ground surface, a 2x2 m square footing is constructed on NC clayey sand. The layer is subjected to a CPT test, with the results revealing an average cone resistance of 20 Mpa. A layer of hard rock is laid 20 meters below the surface. The service load of 25 ton.f is acting on the footing column. Find the elastic settlement using the generalized elastic method. The water level is at the surface and you can use yw 10 KN/m3. (footing weight is negligible) Hint: use table 4.8 of textbook to find the undrained modulus. TABLE 4.8 ESTIMATING EQUIVALENT SOIL MODULUS, ES, VALUES FROM CPT RESULTS [Adapted from Schmertmann et al. (1978), Robertson and Campanella (1989), and other sources.] USCS Group Symbol Soil Type SW or SP Young, normally consolidated clean silica sands (age < 100 years) Aged, normally consolidated clean silica sands (age > 3,000 years) Overconsolidated clean silica sands SW or SP SW or SP SM or SC SM or SC Normally consolidated silty or clayey sands Overconsolidated silty or clayey sands Esla 2.5-3.5 3.5-6.0 6.0-10.0 1.5 3

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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Two meters below the ground surface, a 2x2 m square footing is constructed on NC clayey sand. The layer is subjected to a CPT test, with the results revealing an average cone resistance of 20 Mpa. A layer of hard rock is laid 20 meters below the surface. The service load of 25 ton.f is acting on the footing column. Find the elastic settlement using the generalized elastic method. The water level is at the surface and you can use w 10 KN/m3. (footing weight is negligible) H Hint: use table 4.8 of textbook to find the undrained modulus. TABLE 4.8 ESTIMATING EQUIVALENT SOIL MODULUS, ES, VALUES FROM CPT RESULTS [Adapted from Schmertmann et al. (1978), Robertson and Campanella (1989), and other sources.] Soil Type USCS Group Symbol Young, normally consolidated clean silica sands (age < 100 years) Aged, normally consolidated clean silica sands (age > 3,000 years) Overconsolidated clean silica sands Normally consolidated silty or clayey sands Overconsolidated silty or clayey sands SW or SP SW or SP SW or SP SM or SC SM or SC Esla 2.5-3.5 3.5-6.0 6.0-10.0 1.5 3
Transcribed Image Text:Two meters below the ground surface, a 2x2 m square footing is constructed on NC clayey sand. The layer is subjected to a CPT test, with the results revealing an average cone resistance of 20 Mpa. A layer of hard rock is laid 20 meters below the surface. The service load of 25 ton.f is acting on the footing column. Find the elastic settlement using the generalized elastic method. The water level is at the surface and you can use w 10 KN/m3. (footing weight is negligible) H Hint: use table 4.8 of textbook to find the undrained modulus. TABLE 4.8 ESTIMATING EQUIVALENT SOIL MODULUS, ES, VALUES FROM CPT RESULTS [Adapted from Schmertmann et al. (1978), Robertson and Campanella (1989), and other sources.] Soil Type USCS Group Symbol Young, normally consolidated clean silica sands (age < 100 years) Aged, normally consolidated clean silica sands (age > 3,000 years) Overconsolidated clean silica sands Normally consolidated silty or clayey sands Overconsolidated silty or clayey sands SW or SP SW or SP SW or SP SM or SC SM or SC Esla 2.5-3.5 3.5-6.0 6.0-10.0 1.5 3
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