How to Calculate Corrected Maximum Dry Unit Weight in pcf

What is the formula to calculate corrected maximum dry unit weight in pcf?

Given: An available fill has 21% oversized particles. The specific gravity of the oversized particles is 2.69. If the maximum dry density is 115 pcf, then what is the corrected maximum dry unit weight in pcf?

Corrected Maximum Dry Unit Weight Calculation

The corrected maximum dry unit weight, considering the percentage of oversized particles and their specific gravity, is approximately 108.95 pcf.

To calculate the corrected maximum dry unit weight (CMDUW), we'll need to consider the percentage of oversized particles and the specific gravity of these particles in relation to the maximum dry density (MDD). We can use the formula: CMDUW = MDD * (1 - % oversized particles/100) + Specific Gravity * % oversized particles/100 * 62.4.

Plugging in the given values, CMDUW = 115 pcf (1 - 21/100) + 2.69 * 21/100 * 62.4, we find that the corrected maximum dry unit weight is approximately 108.95 pcf.

The corrected maximum dry unit weight can be calculated by subtracting the percentage of oversized particles from 100% to determine the percentage of particles of the desired size. In this case, the percentage of particles of the desired size is 100% - 21% = 79%.

The specific gravity of the oversized particles is 2.69, which means they are 2.69 times denser than water.