Whether you are building a residential home, strip mall, multistoried office complex, bridge, or stadiums, it is important to find the condition of soil on which the foundation will be supported. That is why it is important to do the site investigation to know the condition of the soil. Once the soil investigation is complete, a geotechnical report will be prepared.
What is a Geotechnical Report?
A geotechnical report is a detailed document prepared after conducting a geotechnical investigation. It provides essential information regarding the soil conditions and the suitability of the ground to support various types of construction.
Geotechnical Investigation Process
Geotechnical Investigation involves the process of drilling boreholes, taking soil samples, testing them in the laboratory, analyze the test report and recommend a suitable foundation. The depth and number of holes depend on the area of the site and the type of structure that will be built. Based on the soil report, a geotechnical engineer may recommend the improvement of the soil before any foundation can be built. The geotechnical engineer also recommends the type of foundation, whether a deep foundation or shallow foundation, is required. The foundation can be strip footing or pile foundation. The depth and type of pile are recommended based on the soil characteristic. Investigating groundwater and investigating rock, if encountered, also forms part of the geotechnical investigation report. If the geotechnical engineer finds that the soil is not suitable, then the engineer gives an appropriate recommendation to address the problem.
Hiring a Geotechnical Engineer for Your Project
It is very important to hire a professional geotechnical engineering company in Edmonton or Calgary with adequate knowledge and experience in the field of geotechnical engineering.
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What Does a Geotechnical Report Include?
Once the drilling and soil testing are complete, the geotechnical engineer prepares the report based on the soil findings. The geotechnical report then provides the following information:
- Characterize the Soil Parameters and Groundwater Status : The report characterizes the soil parameters and groundwater status within the proposed site.
- Geotechnical Recommendations for Foundation Design: The report provides geotechnical recommendations and comments for the design and construction of the foundation of the proposed structure.
- Soil and Groundwater Data for Engineers : The report provides soil geotechnical and groundwater parameters as per the requirements of design engineers.
The objective is to determine the suitability of the soil and whether it can support the proposed structure. It also recommends appropriate foundation types based on the soil characteristics encountered on-site.
Also Read: What Do Geotechnical Engineering Consultants Do
What Happens if the Soil is Unsuitable for Construction?
If the soil encountered is not suitable, then sometimes appropriate foundation type is a recommendation. For example, only a pile foundation is suitable. Or the soil characteristic can be improved. Sometimes the unsuitable soil is removed and approved engineered fill is placed and compacted based on the standards.
Geotechnical Report Cost: How Much Does a Geotechnical Report Cost?
The soil testing cost for construction depends on the location, area, and type of soil and depth of drilling, the number of samples tested. The price starts at a minimum of $3000.00, and it can go up to $25,000 depending on the type of structures built.
Also Read: What Are Geotechnical Services and How Do They Help
Why You Need a Geotechnical Report Before Starting Your Construction Project
A Geotech report can save the unnecessary cost of foundation design? In fact, the foundation design can be optimized based on the report. Without the Geotech report, you may end up building a faulty structure and go through the painful process of rectification, which will cost you a lot of money and time. Hence it is always advisable to do a geotechnical investigation from a professional geotechnical engineering company before you start your design and construction.
To request a Free Consultation click here
Ataur Rahman
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