Page 121 - Facility Piping Systems Handbook for Industrial, Commercial, and Healthcare Facilities

PIPING

PIPING 2.71

GENERAL

The entire piping network must be attached to the building structure in a manner that will ensure
adequate support under all static and dynamic operating conditions. These conditions include:
1. Adequate connection to both the structure and the pipe
2. An allowance for weight of the filled pipe
3. Slope
4. Expansion of the pipe run
5. Seismic forces
6. Pipeline temperature

CODES AND STANDARDS

The following standards are often referred to regarding the selection and design of pipe supports:

1. ANS IB 31: series.
2. MSS SP-58: material and design of pipe supports.
3. MSS SP-69: selection and application of pipe supports.
4. MSS SP-89: fabrication and installation of pipe supports.
5. NFPA-13: sprinkler systems. This standard has wide application to pipe supports other
than those for sprinkler systems.

SYSTEM COMPONENTS

The pipe support is an assembly of components, including a device or method used as a
direct attachment to the structure, a means of securing the pipe, and a connecting member
extending from the structure attachment to the device used to secure the pipe. Other devices
include pipe restraints or anchors and pipe guides.

Attachment to Structure
Various methods and devices are used to attach the support to the structure. Typical attach-
ments include:

1. An insert (Fig. 2.40a) is installed at the time the slab is poured. An anchor or expansion
bolt is installed after the slab is poured.
2. A beam clamp (Fig. 2.40b) provides attachment to exposed structural members. Beam
clamps can also be welded to the beam.
3. Brackets (Fig. 2.40c) attach to walls.

The manufacturer of each type of attachment will have specifications for the maximum
loading permitted for each type of attachment.

Hanger Rods
The hanger rod is usually threaded and connects the attachment to the hanger that is
threaded to receive the rod. The diameter of the rod is selected by the amount of weight

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