Which statement about the graph sheet is true?

Which statement about the graph sheet is true?

• A. Graph sheets are optional and not required
• B. Graph sheets are used to graphically represent the hydraulic calculations
• C. Graph sheets replace the need for a calculation sheet
• D. Graph sheets document maintenance schedules

Answer: (B)

Graph sheets visually display the results of the hydraulic calculations. In standpipe design, you perform calculations to determine pressures and flows through every section of the system under the required demand. The calculation sheet lists the numeric steps, inputs, and resulting pressures, while the graph sheet takes those results and plots how discharge flow relates to pressure (and to residual pressures at key points). This visual representation lets you quickly verify that the system will meet the required pressures at all outlets, including the most remote or high-demand locations, without wading through numbers again. It’s an essential part of the calculation package and is not optional, nor does it replace the calculation sheet or document maintenance schedules.

Graph sheets visually display the results of the hydraulic calculations. In standpipe design, you perform calculations to determine pressures and flows through every section of the system under the required demand. The calculation sheet lists the numeric steps, inputs, and resulting pressures, while the graph sheet takes those results and plots how discharge flow relates to pressure (and to residual pressures at key points). This visual representation lets you quickly verify that the system will meet the required pressures at all outlets, including the most remote or high-demand locations, without wading through numbers again. It’s an essential part of the calculation package and is not optional, nor does it replace the calculation sheet or document maintenance schedules.