Geotechnical assessment includes testing the conditions of soil at a building site. This is done in the initial stages of the project. Most people tend to underestimate the significance of geotechnical assessment. But this procedure has a considerable impact on the construction project in all aspects of design, construction of substructure, planning principles etc.
You will have to consult with a reputed geotechnical investigation company for the project so that you get a proper report. The soil samples will be taken from the site and taken for lab testing to find out their properties. This will give you an accurate representation of the bearing capacity of the soil and all of its relevant physical properties that will determine the type of foundation for the site. The foundation or the substructure is what transfers the weight of the building into the soil. It stabilises the building structure and ensures its safety. In a soil with good bearing capacity, the foundation type can be shallow. But if the soil has poor bearing capacity, you will need to go for deep foundation such as piers and piles. Naturally, deep foundation will be more expensive than the shallow foundations. There is a lot of work involved in constructing them and it will take a longer time as well. By pinpointing the exact nature of the soil, you will be able to design the foundation accordingly which will maximise its performance. You will also be able to find cost-effective solutions for the building substructure. The results from the geotechnical assessment will determine the type of materials used for construction as well. You will be able to design a safe and economically viable building by following the results.
Therefore, a proper investigation has to be carried out in the beginning to understand the nature of the site so that the respective professionals such as architects, structural engineers etc. will be able to design a building that suits the site. Site investigations include surveys by aerial drone, test pitting, tube sampling, in site soil sampling, lab testing etc. You need to understand the contours of the site, location of vegetation, nature of soil, alignment of site in order to provide a comprehensive design. The companies that provide geotechnical assessment will have an engineer who will provide valuable information on foundation design. They will be able to provide you effective solutions for the building of substructure and advise you on suitable building materials. A poor assessment can endanger the occupants of the building and cause structural failure. This would mean risking many lives and losing a large amount of capital invested in the project.