Standard Practice for Design and Installation of Rigid Pipe Hangers
STANDARD published on 1.1.2024
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Designation standards: ASTM F708-24
Publication date standards: 1.1.2024
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: American technical standard
Category: Technical standards ASTM
This practice covers acceptable methods of fabricating and installing rigid pipe hangers used to support shipboard piping systems, it provides guidance for the design of hanger caps, straps and standoffs, selection of hanger and hanger liner materials, hanger bolting, and hanger spacing. The pipe hanger style includes: split cap hanger, 3strap hanger, welded hanger, U-bolt hanger, J band type hanger, Nelson hanger, clamp hanger assembled with mounting channel, poly-block twin clamp hanger, crimp-on weld stud-type hangers, banded weld stud-type hanger, and poly-block single-clamp hanger. Guidance in determining pipe hanger spacing are provided. Special consideration should be given to areas of concentrated loads, such as risers, valves, or groups of fittings, and to piping configurations that could create rotational forces. Hangers need not be lined unless the hanger and pipe are of dissimilar material. All hanger bolts within tanks or other inaccessible areas shall be secured with lock nuts, lock washers, or by some other means. Pipe hangers and standoffs located in areas subject to corrosion, such as in bilges, ballast tanks, and areas exposed to the weather, should be zinc-plated or blasted and coated with inorganic zinc or coated with the same material as that of the surrounding area. Standoffs fabricated from pipe should not be used within tanks. Consideration should be given to thermal growth of the piping when selecting or locating hangers so as not to overstress the piping or hangers.
Keywords:
design, fabrication, installation, piping systems, rigid pipe hangers,, ICS Number Code 21.060.70 (Clamps and staples)