Restraints

Restraints are supports or piping and equipment connection nodes. The following types exist:

• Fixed Anchor (restricts rotation) - restrains linear and rotational displacement in al directions. Receives moments

• Moment Free Anchor - restrains linear displacement in all directions, but does not restraint rotational displacement. Does not receive moments

• Guiding Support (single-directional, double-acting) - restrains linear displacement perpendicular to pipe axis

• Resting Support - restrains linear downward displacement. Disabled during upward displacement

• Variable Spring Support - restrains linear vertical displacement

• Variable Spring Hanger - restrains linear vertical displacement

• Rigid Rod Hanger - restrains linear downward displacement. Disabled during upward displacement

• Constant spring support/hanger - ensures constant force on the piping regardless of the restrained node's displacement

• Custom/Internal Restraint - restraints with properties differing from all of the above

• Equipment Connection  - restraint model mimicking a connection to equipment (pump, press, vessel, equipment, heat exchanged, etc.)

• Marker - used for increasing analysis accuracy. Is not a support and does not affect results

Menu and Toolbar Access

To insert an element, select the desired node and use: Insert > Insert Restraint

or press one of the icons on the insert element toolbar.

To view properties of an existing element:

• Double-click the element in the 3D view

• Select the element and press the toolbar icon