Although the COVID-19 pandemic has slowed life down for millions of Americans, it has had little effect on the construction industry. With stay at home orders being issued from coast to coast, most construction employees have been granted exceptions as they are deemed “essential workers”. While still taking precautionary measures, these crews are still responsible for maintaining infrastructure and continuing most projects.
With less movement and interferences, construction work is able to be done thoroughly and with attention to detail. In order to ensure that these projects will last for years to come, careful testing is essential every step of the way.
When determining a project site, it is often necessary to know the soil’s particle size distribution. Civil and geotechnical engineers can then use this information to assess the water drainage and other important factors of the site. Although sieves are generally used to determine the distribution of soil particles, fine-grained soils with a particle size smaller than 75μm require the use of hydrometer analysis.
Hydrometer analysis complies with active standard ASTM D7928. This test generates a gradation curve based on size definitions present in the soil. This is a fundamental step when building any structure as a soil’s graduation affects its hydraulic conductivity, compressibility, and shear strength.
For more information on how to perform hydrometer analysis and the products Humboldt has to offer, visit their hydrometer analysis of soil page.