Kalomato is local name of black clay found in kathmandu valley, Nepal. It is the lacustrin deposit and found at most of the area of Kathmandu. so it is the major layer which is responsible to resist the load of massive construction in Kathmandu. This clay is highly compressible in nature due to organic content. Depending on tectonic plate movement the Kathmandu is suited in merging zone of Indian and Tibetan plate,so high potential of earthquake. so sensitive analysis is necessary to be done for kalomato to see the strength reduction potential under the effect of disturbance and it is the first time which is done for this research. After disturbance the clay has property to regain its losses strength with time,partially or fully,which is the thixotroy. This analysis is useful for construction of foundation like pile and is first analysis for kalomato in Kathmandu. Both sensitivity and thixotropy characteristics vary clay to clay depending on index property, structure and other contents in clay. So this book is depended on the research with laboratory tests on undisturbed sample of clay, with comparison of other clay which are analyzed already.