Date
03 Jun 1988, 10:00 am - 5:30 pm
Abstract
The paper compares the measured and calculated settlements of two buildings and one concrete water tank founded on the red-weathered soils of Nsukka, Nigeria. Prior to actual construction of the structures the three sites were investigated, soil samples were collected and tested in the laboratory and the data collected were used to predict the total and differential settlements of the structures. Then permanent concrete slabs were established as bases at each of the three sites for observing other points. The theodolite was used at each of the sites to monitor the movements of each of the structures, starting from the time when the base concrete slab or footings were laid to the end of major or active construction operations. It was found that excepting the water tank which continued to settle albert slowly and uniformly, the buildings showed insignificant vertical settlement after about five years later and that the correlations between the measured and predicted settlements were relatively poor, generally less than 40 percent. The results suggested that the field or actual settlements were always larger than the predicted ones. The poor correlation was adduced to primarily the several and serious assumptions made in the establishment of the analytical equations for the determination of settlements analytically and also to the paucity of field data which could help to improve on the relevant consolidation equations using the field results.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1988 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Chukweze, H. O., "Correlation Between the Actual and Predicted Settlements of Structures at Nsukka, Nigeria" (1988). International Conference on Case Histories in Geotechnical Engineering. 18.
https://scholarsmine.mst.edu/icchge/2icchge/2icchge-session6/18
Correlation Between the Actual and Predicted Settlements of Structures at Nsukka, Nigeria
The paper compares the measured and calculated settlements of two buildings and one concrete water tank founded on the red-weathered soils of Nsukka, Nigeria. Prior to actual construction of the structures the three sites were investigated, soil samples were collected and tested in the laboratory and the data collected were used to predict the total and differential settlements of the structures. Then permanent concrete slabs were established as bases at each of the three sites for observing other points. The theodolite was used at each of the sites to monitor the movements of each of the structures, starting from the time when the base concrete slab or footings were laid to the end of major or active construction operations. It was found that excepting the water tank which continued to settle albert slowly and uniformly, the buildings showed insignificant vertical settlement after about five years later and that the correlations between the measured and predicted settlements were relatively poor, generally less than 40 percent. The results suggested that the field or actual settlements were always larger than the predicted ones. The poor correlation was adduced to primarily the several and serious assumptions made in the establishment of the analytical equations for the determination of settlements analytically and also to the paucity of field data which could help to improve on the relevant consolidation equations using the field results.
