What is the weight specification for a rammer used in standard proctor tests?

The standard specification for the rammer used in a Standard Proctor test requires it to weigh 5.50 pounds, with a tolerance of ± 0.02 pounds. This details the exact weight necessary to ensure consistency in the testing process. The Standard Proctor test is a critical method for determining soil compaction characteristics; therefore, using a rammer that meets this precise weight specification is crucial for obtaining reliable and repeatable results.

The specified weight helps achieve uniformity in the application of energy to the soil, which is essential for compacting the soil sample adequately. Variations in the rammer weight could lead to differences in the density measurements of the soil, impacting the test results and their interpretation. Thus, adhering to this weight specification is fundamental for accurate soil characterization in construction projects.