Sway Strut Assemblies

AAA Technology manufactures a standard line of welded as well as threaded sway strut assemblies for industrial piping supports.  Sway struts restrain movement of piping in one direction while allowing for movement lateral to the axis of the sway strut.  Welded or threaded sway struts allow for adjustment of the length in the field at the time of installation.  Refer to installation instructions for specific type of sway strut for assistance in determining the required sway strut fit-up length.
AAA Technology's sway struts are manufactured in accordance with the requirements of the U.S. Government and the power and process industries.  These include the Federal Specification WWW-H-171E, Manufacturers Standardization Society MSS-SP58. ASME B31.1. B31.3 and B31.5 piping codes.

FEATURES:
• Handles both compressive and tensile loads
• Requires minimal maintenance
• Provides up to 3 1/2” field adjustment (plus or minus) at time of installation
• Provides for + or – 5° combined angular rotation and misalignment
• Field adjustment accomplished by extending the rod connected to the paddle on one end of the strut until the unit is rigid and welding the rod to the extension piece
SELECTING THE CORRECT SIZE SWAY STRUT
1. Given the tension load, go to the dimensional table on the regular assembly data sheet. Select the sway strut that has a tension load rating equal to or slightly larger than the design tension load.
2. Given the compression load, go to the maximum rated compression loads table on the regular assembly data sheet. Select the sway strut that has a compression load rating equal to or slightly larger than the design compression load.
3. Determine the required C–C dimension. If the unit being specified is option 1, subtract the “A” dimension from the total length to determine the C–C length. If the unit being specified is option 2, subtract two times the “A” dimension from the total length to determine the C–C length. If the unit being specified is option 3, subtract the “A” dimension for the rear bracket and the “K” dimension for the clamp from the total length to determine the C–C length.
4. Given the desired C–C dimension, determine whether the short welded assembly or the regular length assembly is required. Note that if a short welded sway strut is selected, the C – C dimension must be equal to or greater than the minimum C–C and less than or equal to the maximum C–C.  If a regular welded sway strut is selected, the C–C dimension must be equal to or greater than the minimum C–C and less than or equal to the length of the smallest maximum rated compression load shown in the charts.
CONSTRUCTION:  A-36 Carbon Steel, Special materials available on request.
FINISHES AVAILABLE:  Carbon Steel - Black, Painted or Hot Dip Galvanized. Stainless Steel – Plain (Special).
ORDERING:  Specify figure number (Fig. 300), name (Welded Sway Strut Assembly), sway strut size (0 through 11), “C-C” dimension, design tension load, design compression load, option number (1, 2 or 3), pipe diameter, if applicable, material, if other than carbon steel, and finish.
EXAMPLE:  Fig. 300 Welded Sway Strut Assembly, Size 3, C-C = 8’-0”, Tension Load = 10,000 lbs., Compression Load = 7,500 lbs., Option #3, 10” Pipe Dia., HDG.

AAA Technology maintains an inventory of components and can produce finished assemblies quickly.

 

Sway Struts

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	Welded sway strut assembly
	Short welded sway strut assembly
	Threaded sway strut assembly
	Pipe clamp for sway strut assembly
	Threaded sway strut assembly. Options 1, 2 and 3.
	Threaded sway strut assembly with field welded extension
	Pipe clamp for sway strut assembly.  Figs. 315 & 320
	Replacement threaded sway strut