Journal Clean WAS (JCleanWAS)

This research aimed to determine the geotechnical properties of soils along the British American area, Jos, Northcentral Nigeria. A total of five (5) soil samples were collected at a depth of 1.5 m and subjected to geotechnical tests: moisture content, specific gravity, liquid limit, plastic limit, linear shrinkage, and plasticity index. The moisture content of the soil ranges from 10.7 to 21.2%, while the specific gravity of soil ranges from 2.65 to 3.10. The liquid limit ranges from 35.24 to 38.5%, plastic limit value varies from 15.76 to 24.07%, plasticity index value ranges from 11.17 to 20.24%, and linear shrinkage value from 6.69 to 7.54%. Cassagrande plasticity chart indicates that all the soil samples plot within the CL-Group. The value of specific gravity (2.65 to 3.10) shows that the soil samples in the area can be categorized into sand, silty sand, and soil with mica or iron. Based on the value of the liquid limit, the degree of expansion was categorized into a medium degree of expansion (35-50%), while the danger of severity zone was identified as marginal (35 to 50%). Based on the plasticity index value, two (2) danger of severity zones were identified as non-critical with a plasticity index value of <12% and marginal with a plasticity index of 12 to 23%. The degree of expansion was classified as low with a plasticity index value of <12% and medium with a plasticity index value of 12 to 23%. The value of linear shrinkage indicates a non-critical danger of severity zone with a value of <15%, and the degree of expansion is low. Two (2) plasticity index zones of medium plastic and highly plastic were identified, while two (2) swelling potential zones were classified as low with a plasticity index value of 0 to 15% and medium with a plasticity index value of 15 to 25%. The soil type in the study area can be classified into two: silt clay with a plasticity index of 7-17% and clay with a plasticity index of >17%.