Subsurface Explorations

4 boreholes were drilled up to a depth of 10mbg and different soil strata encountered were logged/profiled and ground monitored where encountered,

Sample Recovery

Disturbed samples were recovered at every 1.5m using STP Slit spoon sampler and undisturbed samples were recovered at every change in the soil strata,

Insitu testing

Standard Penetration Tests (SPT) were performed in all the four (4) boreholes at every 1.5m intervals to assess the in-situ bearing capacity;

Laboratory Testing

We performed laboratory testing for disturbed samples including Natural Moisture Content, Particle size distribution by Sieve analysis, Atterberg limits (Liquid, Plastic and Linear Shrinkage Limits), Chemical tests for soil (pH value, Chloride and Sulphate content) and for undisturbed samples including Consolidation, Direct Shear Strength and Undrained Shear Test (Unconsolidated Undrained Triaxial).

Report writing

We compiled the geotechnical investigations report comprising of our findings of the subsurface soil conditions, engineering analyses made on the laboratory tests and recommendations on the type and depth of bridge foundation to be used.