An anchor is a restraint which fully restrains the pipe; i.e., in all degrees of freedom — three translations and three rotations. An anchor is anywhere these degrees of freedom are restrained — it may be explicitly built for restraint purpose, it may be a by-product of a connection to an equipment nozzle, or it may be due to a construction practice such as grouting a wall penetration through which the pipe travels. Examples of anchors are shown in Figure 3-94. Anchors may be defined in CAESAR II by entering a type of Anchor, coding in six individual restraints (X, Y, Z, RX, RY, and RZ), or using a WRC 297 nozzle stiffness (see Estimation of Vessel Nozzle Flexibilities).
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