Shear Strength and Deformation Characteristics of Uppsala Clay with CRS and Standard Oedometer Tyra Morell Bonin & Magdalena Mähler To see how much a clay compact under different pressure one can use several different methods and in this project, two methods were used, the Standard Oedometer and a CRS apparatus. A Standard Oedometer is a full-time manual device and the CRS apparatus is a modern electric and automatic device. The aim of the project was to see similarities and differences between the two methods and examine which method that were most reliable. This has been done with repeated laboratory tests and afterward evaluations. With this information one can get a picture of how the clay will behave and how it will deform in nature. This is of great help to construction companies what wish to build on the clay and needs the information to proceed with a foundation of a construction, which can be complex on clay. Both methods showed similar results, with differences in compression. The Constant Rate of Strain gives higher safety margins.