The statement "The sample is spread out in the bag by pressing the bag downward onto the aggregate" is accurate.

• A. It depends on the bag type
• B. True
• C. Not specified
• D. False

Answer: (D)

For a representative sample, the goal is to distribute the material evenly inside the bag without compacting it. Pressing the bag downward onto the aggregate tends to push material together, increasing compaction and encouraging stratification by particle size. This can bias the sample, making it unrepresentative of the batch.

Instead, spread the sample by gentle, even action—tilting, shaking, rotating, and layering portions so the contents fall and settle into a uniform, loose distribution. Build up the sample in layers or through careful pouring and smoothing, ensuring all portions mix rather than bunch up in one area. This approach preserves the proportions of different sizes and moisture and yields a more accurate test sample. While bag handling details can vary with bag type, the fundamental practice is to avoid pressing and to promote even distribution rather than compression.