One day seminar of the Society of Civil Engineers, Municipality of Athens
October 2001

• The influence of soil quality on the spectrum is chosen by the designer, while in the recorded accelerogram we ought to know the quality of the soil at the site
• The DCM method (FEMA 273/356) applies to soft soils, in the case of stiff structures with low relative strength, results to low values for the displacements. Increase proposal by Mystakidis/Kanellopoulos …
• Soft floor mechanism is a major cause of collapse. It can easily be determined through the elastoplastic analysis of the system. Strengthening is primarily intended to remedy this phenomenon
• The final decision on the type and extent of Strengthening can be obtained with the help of risk analysis. It must be estimated the reduction in risk after strengthening (human lives, material osses) in relation to the capital investment, based on  internationally acceptable values.

Lecturer: Antonios P. Kanellopoulos

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