When using a hose for a wash, what should be prevented according to D1140?

The correct choice emphasizes the importance of preventing splashing of material over the sides or water accumulation on the 75-UM screen during washing. This is critical because excessive splashing can lead to inaccurate test results by losing valuable material or introducing water that can interfere with the soil's properties.

When washing soil samples, maintaining the integrity of the material and the consistency of the sample is vital for proper testing. If water accumulates on the screen, it could affect the mesh's ability to retain soil particles accurately, ultimately skewing the results of sieve analysis or other evaluations being conducted. Overall, ensuring the washing process is controlled helps to maintain accuracy and consistency in testing, aligning with the standard outlined in D1140.

Other choices, while they may be relevant considerations in different contexts, do not directly address the primary concern during the washing process as highlighted by D1140.