What is the specified height for a 4" mold according to standard proctor specifications?

For a standard Proctor test, the height of a 4-inch mold is specified to be 4.584 inches, with a tolerance of ± .018 inches. This particular measurement is crucial because it ensures that the mold is of the correct dimensions, which is necessary for the density testing of soil samples. Consistent mold sizes allow for reliable and accurate comparisons of test results.

Using a mold that adheres to these specifications allows for effective compaction of soil samples, which is critical in assessing the maximum dry density and optimal moisture content for different soil types. Precision in the mold dimensions ensures that the laboratory results are repeatable and meet industry standards, which is essential for quality control in construction projects.