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3.5.1.4 Hanger

The most common type of restraint is that which rigidly resists weight; in other words it only acts against the downward movement of the pipe. Because it is the most common type, it merits two names — hanger and support. A hanger is specifically a rigid restraint, resisting only downward pipe movement, with a point of attachment above the pipe, that is, using a rod hanger assembly of some type. Typical hangers are shown in Figure 3-98. These are coded in CAESAR II as +Y restraints (where - or + preceding the restraint direction indicates one-way restraint), indicating that the restraint acts in the +Y direction against the pipe. Since the pipe has no structure to rub against, friction is not modeled.

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Modeling And Analysis Of The Piping System

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