Which statement is true about the coarse aggregate splitter design?

• A. It has an equal number and equal width of chutes, at least 8, which shall be at least 25% greater in width than the largest particle size.
• B. It has an unequal number and unequal width of chutes.
• C. It has at least 12 chutes with equal width.
• D. It is never used for coarse aggregates.

Answer: (A)

The key idea is that a coarse aggregate splitter must divide a bulk sample into multiple, equally likely sub-samples so testing is representative. Using an equal number of chutes with equal widths ensures every portion of material has the same path and capacity, so no single chute preferentially collects more material. Having at least eight chutes provides enough sub-samples to reduce sampling error and improve reliability. The width being at least 25% greater than the largest particle size prevents oversized particles from jamming or bridging the chutes, which would bias results by blocking flow or unevenly distributing material. The combination of identical chutes and sufficient width ensures a fair, smooth split.