Longest length method. Determine the required pipe size of each section (1,2,3) and outlet of the piping system shown in the Figure, with a designated pressure drop of 0.5 -inch w.c using the Longest Length Method. The gas to be used has 0.60 specific gravity and a heating value of 1,000 Btu/ ft3 ur=35cfh Use the table to organize you answers \begin{tabular}{l|l|l|l|} \hline Gas & Natural \\ \hline & Inlet Pressure & Less than 2 psi \\ \hline & Pressure Drop & 0.5 in. w.c. \\ \hline \end{tabular} Longest length method. Determine the required pipe size of each section (1,2,3) and outlet of the piping system shown in the Figure, with a designated pressure drop of 0.5 -inch w.c using the Longest Length Method. The gas to be used has 0.60 specific gravity and a heating value of 1,000 Btu/ ft3 ur=35cfh Use the table to organize you answers \begin{tabular}{l|l|l|l|} \hline Gas & Natural \\ \hline & Inlet Pressure & Less than 2 psi \\ \hline & Pressure Drop & 0.5 in. w.c. \\ \hline \end{tabular}