MIL-HDBK-1003/8A
Change 2, 30 December 1991
4.2.7.2
Specification.
Design and locate anchors in accordance with ASME
B31.1.
4.2.7.3
Strength. Design anchors to withstand expansion reactions. With
expansion joints, consider the additional end reactions due to internal fluid
pressure, and add end reactions due to spring rate of the joint.
4.2.7.4
Guying. Anchors for elevated aboveground systems shall consist of
wire rope guys running from embedded concrete deadmen to pipe saddles welded
to the pipe and secured to the vertical support(s). Guy in both directions.
Guys may be located on the diagonal to serve also as sway bracing.
4.2.7.5
Embedding. In underground concrete tunnels, the ends of structural
steel shapes anchoring a pipe may be embedded in the tunnel walls or floors.
4.2.8
Supports.
Insure pipe supports conform to ASME B31.1.
4.2.8.1
Low Elevations. For aboveground systems at low elevations (defined
as lower than 5 feet (1.53 m) above grade or the working surface), use and
space concrete pedestals, steel frames, or treated wood frames as required
depending on pipe sizes.
4.2.8.2
High Elevations. At higher elevations above ground, support
pipelines on wood, steel pipe, H-section steel, reinforced concrete,
prestressed concrete poles with crossarms, or steel frameworks fitted with
rollers and insulation saddles. (See Figure 11.) Details of design will vary
depending on site conditions.
4.2.8.3
Long Spans. When long spans are necessary, cable-suspension or
catenary systems may be used.
4.2.8.4
Underground Conduits. Use approved types of manufacturers' standard
designs supports for underground conduits.
4.2.8.5
In Trench. Suspend pipes either from the walls or the tops of the
walls. Do not support piping from either the floor of the trench or from the
removable top. The pipe hanger design must provide for adequate system
expansion and contraction.
48
Previous Page
