Abstract

• The influence of local geologic and soil conditions on the intensity of ground shaking and earthquake damage has been known for many years. Local site effects play an important role in earthquake resistant design and must be accounted for on case by case basis. The nature and distribution of earthquake damage is strongly influenced by the response of soils conditions. This response is controlled in large part by the mechanical properties of the soil. Yangon, also known as business city, is the former major capital city in Myanmar. Yangon area is fairly earthquake-prone as Myanmar itself lies in a major earthquake belt of the world. It is noticed that the soil conditions and soil factor are incorporated. This part of fair to good foundation soils lies on a north-south trending anticlinal ridge of Neogene formations. The flanks, covered by the alluvium, are mostly occupied by satellite towns where the period values range from 0.13 to 1.00 seconds and the magnification factors are 3.2 to 5.0. This research is purposed to determine the predominant periods and amplification factors of Yangon business city by utilizing the geological map of Yangon and transfer function method. Especially for ground motion, transfer function method and SPT of drilling sites are used to develop the site effects condition of Yangon business city.