Example 16.1
The lot size of the construction for density evaluation is 1 day of production. The property to
be tested is density. The lot will be divided into four equal sublots, and one random sample
should be taken from each sublot. The in-place density should be measured. A 4 in. diameter
core will be taken at each location. Use one test for each sample. Use ASTM D-2000 for
determination of density. The average of the four core samples shall be 98%–100% of laboratory
density. When the density is below 98%, the contractor will be paid at the percentage shown
in Table 16.2.