Who determines the size and type of spring can used?

• A. Operator
• B. Contractor
• C. Designer
• D. Engineer

Answer: (D)

Engineering decisions define the size and type of a spring can used because it must meet the system’s loads, required deflection, operating environment, and safety requirements. An engineer performs the calculations to determine how much force the spring must provide, how much travel is needed, and how it will behave over its life under temperature, pressure, and potential corrosion. They select the appropriate spring type and specify dimensions, material, and preload to achieve the required spring rate and reliability, while also ensuring compliance with relevant codes and standards. Operators run and maintain the system based on that design, and contractors implement the work according to the engineer’s specifications, while designers may draft the layouts but do not, on their own, determine the final sizing.