The most important and essentially part of any structure is soil test. Building will rest on it throughout it’s whole life. The structural designer can not design the foundation without the soil bearing capacities and other properties. It’s not possible to select the suitable type of foundation without soil testing. So get the soil test to know whether building needs a shallow foundation or a deep foundation. Bangladesh is in an earthquake prone area. A proper soil investigation from a reputed company will lead you to the safer future.