What is required for branch piping that has not yet been sized?

The requirement for branch piping that has not yet been sized is that the length from the point of delivery to each outlet must be used. This reflects best practices in the design and installation of LP gas systems because effective sizing of the branch piping is crucial for ensuring proper pressure and flow to each outlet. By referencing the length from the delivery point to each outlet, engineers can determine the appropriate size for the piping, ensuring it meets the necessary safety and operational standards.

Utilizing this length provides a foundation for calculating flow rates and pressure drops, which are essential factors in the overall efficiency of the gas distribution system. This detail helps avoid issues such as insufficient gas flow or pressure fluctuations, which can lead to equipment malfunction or safety hazards.

Other options, while they may sound plausible, don't directly address the immediate concerns of sizing in a practical way. For example, requiring multiple engineers or a separate permit may be more administrative burdens rather than technical requirements specifically addressing branch piping sizing. Similarly, installing piping without sizing would overlook critical safety and performance considerations that could lead to system inefficiencies or failures.