What is the spacing requirement for steel tube supports horizontally and vertically?

The spacing requirements for steel tube supports are crucial for ensuring structural integrity and stability in high-pressure boiler applications. The correct answer indicates that the maximum horizontal spacing should be 8 feet and the maximum vertical spacing should be 10 feet.

This specification is based on guidelines that aim to prevent excessive deflection and ensure that the system can adequately support the weight of the tubes and any additional loads they may bear. When supports are spaced too far apart, it can lead to issues such as sagging, increased stress on the tubes, potential misalignment, and failure of the system over time.

In contrast, other options suggest wider spacing, which would not align with standard engineering practices for supporting steel tubes under pressure. By adhering to the given requirements of 8 feet horizontally and 10 feet vertically, facility operators can ensure that the structural elements within the boiler system are adequately supported to maintain optimal performance and safety.