The steel pipe shown carries water from the main pipe A to the reservoir and is 2 inch in diameter and 240 ft long. What must be the pressure in A to provide a flow of 45 gpm? Elevation = K0 t Water T 50 F Open globe valve 90 bends (thncaded) Elevation = 20 ft 2 in. galvanized pipe
The steel pipe shown carries water from the main pipe A to the reservoir and is 2 inch in diameter and 240 ft long. What must be the pressure in A to provide a flow of 45 gpm? Elevation = K0 t Water T 50 F Open globe valve 90 bends (thncaded) Elevation = 20 ft 2 in. galvanized pipe
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:**Problem Description:**
The steel pipe shown carries water from the main pipe at point A to the reservoir. The pipe is 2 inches in diameter and 240 feet long. Determine the pressure required at point A to maintain a flow rate of 45 gallons per minute (gpm).
**Diagram Explanation:**
- The diagram shows a piping system with a steel pipe starting at point A and ending at a reservoir.
- The pipe includes two 90° threaded bends.
- An open globe valve is located along the pipe.
- The pipe's start at point A has an elevation of 20 feet.
- The reservoir is at an elevation of 100 feet.
- The water temperature is specified to be 50°F.
- The pipe is made from 2-inch galvanized steel.
**Notes for Calculation:**
- The analysis will likely involve calculating head losses due to pipe friction, fittings, and elevation change.
- Use the Darcy-Weisbach equation or Hazen-Williams equation for head loss due to friction.
- Consider the impact of bends and valves using appropriate loss coefficients.
- Calculate the total dynamic head to find the required pressure at point A.
This explanation sets up an engineering problem, focusing on fluid mechanics and the calculation of pressure in a piping system based on specified flow rates and physical characteristics.
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