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AWWA C560-14 Addendum-2015
ANSI/AWWA C560a-15 July 2014 Addenda to ANSI/AWWA C560-14 Standard For Cast-Iron Slide Gates
1 стр.
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Разработчик:
Зарубежные/AWWA
Описание

This standard provides the minimum requirements for cast-iron slide gates, including materials, general design, manufacture, testing, inspection, and shipment. The slide gates referenced in this standard are vertically-mounted, cast-iron slide gates with full aperture closing, designed for either seating head, or unseating head, or both, in ordinary water-supply and wastewater service. The cast-iron slide gates have machined metal faces and machined adjustable wedging devices.

The gates are primarily used to shut off or throttle water or wastewater flow through a rectangular or round orifice, end of channel, or in-channel opening.The cast-iron slide gates may be used for square, rectangular, or round openings. They gates may be eitherof the conventional-closure or the flush-bottom-closure type and may open upward or downward. This standard also describes manual slide gate actuator mechanisms together with standard accessories.

Major revisions made to the standard in this revision include:

  1. The foreword was updated to bring consistency among the four slide-gate standards.
  2. Wastewater considerations were included where applicable.
  3. Some requirements were extensively updated to read identically among the four slide-gate standards except where materially different.
  4. Tensile, compressive, and critical buckling loads were readdressed and language clarified. 
  5. Maximum pressure velocity factors under defined operating conditions were added to the general design along with new language for lift nut requirements.
  6. Design loads for stem-guided components are added.