Water Pressure Plane
Policy and Design Criteria The following are key policy and design criteria applicable to the study area as provided in the City of Fort Worth Installation Policy and Design Criteria for Water, Wastewater, and Reclaimed Water Infrastructure and should be considered. z Parallel water main lines for wide paved streets: The City criteria states that water service lines exceeding 55 linear feet will require parallel water main lines. In segments where ROW exceeds 110 linear feet, water service lines exceeding 55 linear feet are likely and therefore parallel water main lines should be considered. z Minimum water line size: The City criteria states that the minimum water line size is 8-inches. Linear footage of 6-inch water mains identified within the study area should be considered for up-sizing to 8-inch or greater. z Water Meters: The City criteria states that the minimum water meter size is 3/4-inch or 1-inch and located a minimum of 2.5 feet behind back of curb. As alternatives are considered, water meter relocations and meter size replacements may be needed. z Water Main Sizing: Currently the City will not tap or provide direct service from water mains twenty-inch diameter and greater in size, therefore installing a 12-inch or smaller parallel water main to service property owners along the ROW should be considered.
There are two pressure planes within the study corridor with the Southside 2 Pressure Plane to the west of Sycamore Creek and Eastside Pressure Plane to the east. Through modeling and master planning efforts, pressure plane areas are designated to maintain adequate pressure and flow to accommodate growth and meet fire flow protection requirements throughout the water service area. Water main modeling should be considered to adequately size the water mains for future density. Pipe Material Pipe material utilized within the existing system range varies from Polyvinyl Chloride (PVC), Ductile Iron (DI), Cast Iron (CI), Asbestos Cement (AC), Concrete, High Density Polyethylene (HDPE), etc. Significant linear footage of cast iron pipe, which is subject to extreme rapid thermal expansion and cracking due to its brittle properties, was identified within the study area. As the corridor is reconstructed, cast iron water main replacement should be considered.
City of Fort Worth Water Main Replacement
Analysis | 97
Source: William Joy (WFAA)
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