How do you find the set back when you have center-to-center (C-C) distance?

To find the set back using the center-to-center (C-C) distance, the correct method is to multiply the C-C distance by 0.41. This factor is derived from the geometry of piping systems and is essential in determining how far back you need to measure from the center of the fittings, valves, or other components to ensure proper spacing and alignment.

Using this factor helps account for various installation requirements, such as the physical space needed for connections, the flexibility of the system, and code requirements for safe operational distances. This ensures that the final arrangement of the pipes meets both engineering standards and safety regulations. Hence, using the multiplication by 0.41 gives a precise measurement for determining set back in high-pressure piping applications.