Which of the following is NOT a requirement for fine aggregate mechanical splitters?

The requirement that all chutes must have an equal width is not a necessity for fine aggregate mechanical splitters. Instead, the primary focus is on ensuring that the splitter can effectively reduce the volume of aggregate samples for more manageable testing. Variations in chute width can allow for flexibility in design, accommodating different aggregate types and ensuring effective separation during the splitting process.

In contrast, the stipulations regarding the sample passing a 3/8" sieve help ensure that only appropriately sized aggregates are tested. The maximum chute width of 3/4" is in place to maintain an effective split of the material. Additionally, directing material flow to alternate sides helps to ensure an even and representative distribution of the sample, which is crucial for accurate subsequent testing. These requirements are designed to maintain the integrity and quality of the aggregate sample being tested, while the notion of equal chute width does not hold the same level of importance.