When a truck brings a new load of sand to the site, what should you ask for to ensure proper grading?

• A. To place it on the grass outside and on the edge of the excavation
• B. To dispose of the old sand elsewhere
• C. To spread it immediately without inspection
• D. To bring a sample of the sand for grading check

Answer: (D)

Verifying the fill material’s gradation before placing it is essential because the particle size distribution directly affects drainage, compaction, and long-term stability of the backfill. Asking for a sample to perform a grading check lets you confirm the sand meets the design specifications through a sieve analysis or a certificate, ensuring the mix isn’t too fine (which can clog and slow drainage) or too coarse (which can create voids and settling). With the sample and test results, you have objective evidence that the load will perform as intended, rather than guessing from appearance or assuming it’s acceptable.