For a grocery store heated by rooftop gas-fired units, what size steel pipe is required to supply gas from the meter?

When determining the appropriate size of steel pipe required to supply gas from the meter to gas-fired units, several factors, such as the total gas demand of the appliances, the distance from the meter to the appliances, and the pressure drop allowable in the system, must be considered.

In the case of a grocery store using rooftop gas-fired units, it is common to have a significant number of appliances that demand a higher volume of gas, particularly if heating, cooking, and refrigeration are involved. The calculation of gas demand, often expressed in BTUs (British Thermal Units), guides the selection of pipe size to ensure that there is adequate gas flow to meet the requirements of these units without causing too much pressure drop.

6-inch steel pipe provides a larger diameter compared to the other options, allowing for increased gas flow capacity. It is particularly suited for commercial applications like grocery stores, where a steady supply of gas is essential to maintain operational effectiveness and safety. This size pipe is likely to accommodate both the peak demand of the appliances and provide a margin for system expansion or future demands.

Therefore, for a grocery store heated by rooftop gas-fired units, a 6-inch steel pipe is the appropriate and practical choice to ensure compliance with safety and performance standards in gas distribution