What are typical responsibilities of the transportation inspector regarding pump trucks?

• A. Scheduling maintenance for trucks
• B. Ensuring cleanouts between batches, preventing contamination, verifying hose condition, and observing that pumping does not cause segregation.
• C. Painting pump trucks
• D. Recording driver hours

Answer: (B)

Quality control during pumping focuses on keeping concrete uniform and uncontaminated as it moves through pump lines from the plant to the placement area. Typical responsibilities of the transportation inspector include ensuring cleanouts between batches so that no one batch contaminates the next, preventing cross-contamination of materials and colors, and protecting the integrity of the mix. They verify hose condition to prevent leaks, wear, or blockages that could introduce contaminants or cause improper pumping. They also observe the pumping process to make sure it does not cause segregation, meaning the heavier aggregate isn't left behind and the paste isn’t diluted or separated from fine materials as it travels, which would compromise strength and durability. In short, these checks safeguard mix quality during transfer and placement. Tasks like scheduling maintenance, painting equipment, or recording driver hours are not part of this quality-control role.