Date
03 Jun 1988, 10:00 am - 5:30 pm
Abstract
In this paper, two case records are presented as an illustration of the advantages of using what one might call "common sense" foundation design. The first case is an illustrative example of the detrimental effects on older buildings that can be caused by traditional piling in non-cohesive soil. The possibilities of avoiding damage by application of a less rigid foundation design method are discussed. Thus, having access to more sophisticated soil investigation methods than those originally used, it can be shown that a mixed foundation, partly on settlement reducing piles and partly on shallow footings would have been possible. The concept of settlement reducing piles means that the length and number of piles in the pile groups are chosen with a view to eliminating settlement differences between piled and unpiled foundations. Using this solution, the part of the new building nearest to the older ones would have been founded on shallow footings, which would have meant both a considerable reduction of damage to the older buildings and considerable savings in foundation costs. The second case record is presented in support of the design method suggested. The subsoil conditions under the building in this case are very similar to those in the first case. Here, on the basis of more developed soil investigations methods, it was decided to found the building partly on settlement reducing piles and partly on shallow footings. To keep a check on the result, the building was monitored with settlement gauges. The results of the settlement observations showed excellent agreement between prediction and performance.
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
Hansbo, Sven, "Common-Sense Foundation Design" (1988). International Conference on Case Histories in Geotechnical Engineering. 15.
https://scholarsmine.mst.edu/icchge/2icchge/2icchge-session6/15
Common-Sense Foundation Design
In this paper, two case records are presented as an illustration of the advantages of using what one might call "common sense" foundation design. The first case is an illustrative example of the detrimental effects on older buildings that can be caused by traditional piling in non-cohesive soil. The possibilities of avoiding damage by application of a less rigid foundation design method are discussed. Thus, having access to more sophisticated soil investigation methods than those originally used, it can be shown that a mixed foundation, partly on settlement reducing piles and partly on shallow footings would have been possible. The concept of settlement reducing piles means that the length and number of piles in the pile groups are chosen with a view to eliminating settlement differences between piled and unpiled foundations. Using this solution, the part of the new building nearest to the older ones would have been founded on shallow footings, which would have meant both a considerable reduction of damage to the older buildings and considerable savings in foundation costs. The second case record is presented in support of the design method suggested. The subsoil conditions under the building in this case are very similar to those in the first case. Here, on the basis of more developed soil investigations methods, it was decided to found the building partly on settlement reducing piles and partly on shallow footings. To keep a check on the result, the building was monitored with settlement gauges. The results of the settlement observations showed excellent agreement between prediction and performance.
