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Seismic Bracing for Ductwork, HVAC, Electrical & Pipe - QRFS
https://blog.qrfs.com/329-seismic-bracing-for-ductwork-hvac-electrical-systems/
NFPA 13 Seismic Bracing Requirements: Cable Sway Braces
https://blog.qrfs.com/320-nfpa-13-seismic-bracing-requirements/
Installing cable sway bracing is relatively uncomplicated, following these two general steps: Secure the cable to the structural member with measures such as…. Looping the cable around the member and swaging it in place with an oval sleeve. Looping the cable through an approved anchor and swaging it in place.
Connecting Sway Braces to Unistrut Threaded Rod
https://www.unistrutohio.com/connecting-sway-braces-to-unistrut-threaded-rod
Connecting Sway Braces to Unistrut Threaded Rod. In prior Tech Talk posts, we have discussed options for connecting threaded rod to Unistrut. In this post, we'll take the discussion a step further and explain how to connect sway braces to threaded rod. As a rule of thumb, longer drops of threaded rod are more susceptible to twisting and swaying. If the grid is supporting MEP …
California 2016 CBC - Seismic bracing of ductwork?
https://www.thebuildingcodeforum.com/forum/threads/california-2016-cbc-seismic-bracing-of-ductwork.17951/
May 10, 2017. #1. I have a plan reviewer that is requiring seismic bracing on small cross section ductwork. They are citing ASCE 7-10, 13.6.7 Ductwork. I believe exception #2 is exactly what we have. They are saying that somehow we need to satisfy both exception #1b and #2. Our ductwork is small diameter with the largest being 24".
Seismic Cable Bracing Systems - HVAC | Griplock® Systems
https://griplocksystems.com/seismic-cable-bracing
Even if you’re not in an earthquake prone area, you may require sway bracing for your installation. These cross-cable systems can help prevent sway from other forces such as air flow. Griplock’s Seismic Cable Bracing Systems are already specified by designers and architects in many new construction projects and are the perfect choice for retrofit projects where design flexibility is …
Ductwork - Supports - Engineering ToolBox
https://www.engineeringtoolbox.com/ductwork-spacing-d_927.html
1 ft2 = 0.0929 m2 = 144 in2. 1 ft (foot) = 0.3048 m = 12 in. Note! Support systems for ductwork may provide restraint in three directions against displacement and rotation. Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations.
Seismic Bracing | Mason Industries
https://mason-ind.com/seismic-bracing/
SEISMIC BRACING. Seismic Cable Restraints shall consist of galvanized steel aircraft cables sized to resist seismic loads with a minimum safety factor of two and arranged to provide all directional restraint. Cables must be pre-stretched to achieve a certified minimum modulus of elasticity. Cable end connections shall be steel assemblies that swivel to final installation …
SMACNA Seismic Restraint Manual - iccsafe.org
http://media.iccsafe.org/news/annual_conference/2013-AtlanticCity/documents/Seismic_Restraint.pdf
Bracing of Ducts the hanger is attached. Hangers must be positively attached to the duct within 2 in. of the top of the duct with a minimum of two #10 sheet metal screws. Lateral motion will not cause damaging impact with other systems. Lateral motion will not cause loss of vertical support. 2. Ducts have a cross-sectional area of 6
Seismic Bracing Requirements for Nonstructural …
https://seblog.strongtie.com/2015/08/seismic-bracing-requirements-for-nonstructural-components/
12 Inch Rule: When a distributed system such as conduit ducts or pipes are suspended from the structure with hangers less than 12 inches in length, seismic bracing is not required. If the support carrying multiple pipes or conduits weighs less than 10 pound/feet of lineal weight of the component, the seismic bracing of the support does not have to be …
Seismic Bracing Systems
https://www.unistrutohio.com/wp-content/uploads/pdf/library/unistrut-seismic-bracing-for-1998-cbc.pdf
Design a brace for a single pipe hanger with 8” diameter pipe and hangers spaced at maximum distance (see figure E-1). FIGURE E-1 Solution: Step 1 Select hanger type (page 3-6, 3-7, 3-8, 3-9, 3-10) given the pipe diameter of 8". Step 2 Determine the maximum hanger spacing, to be 19 ft. on center (page 2-1, table 1).
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