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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 …
Standard Seismic Applications Guide - IBC Category D, E, …
https://www.usg.com/content/usgcom/en/performance-applications/performance/seismic/ibc-category-d-e-f.html
Refers to CISCA installation recommendations for zones 3-4 via ASCE 7. The above information is correct to the best of our knowledge at the date of issuance. Because codes continue to evolve, check with a local official prior to designing and installing a ceiling system. This is only intended as a quick reference.
NFPA 13 Seismic Bracing Requirements: Cable Sway …
https://blog.qrfs.com/320-nfpa-13-seismic-bracing-requirements/
Here, we take a detailed look at what goes into designing and installing seismic braces for a fire sprinkler system, specifically focusing on cable sway braces. Cable braces, because they have no rigidity, require two lengths of cable to do the job of one rigid member.
Seismic Wires for Pendant Light Fixtures | Mike Holt's …
https://forums.mikeholt.com/threads/seismic-wires-for-pendant-light-fixtures.90052/
I am in CA and I know that there is a DSA requirement for schools that says if the fixture can swing and hit an obstruction within 45 degrees in any direction then the seismic wires are needed, but this is for a commercial building. Anyone know a code section that would require seismic wires? That's a hard one to answer.
Technical Document Seismic Technical Guide - USG
https://www.usg.com/content/dam/USG_Marketing_Communications/united_states/product_promotional_materials/finished_assets/seismic-technical-guide-light-fixture-hanger-wire-requirements-en-SC2493.pdf
There are two factors that determine these hanger wire requirements in seismic design categories D E, and F: 1. The weight of the lighting fixture. 2. The load carrying capacities of the suspension system tees which include the main tee duty classification and the cross tee load capacity. Both requirements may apply. 1.
Lighting Seismic Bracing | Cable Suspension | Griplock® …
https://griplocksystems.com/product-category/lighting/seismic-bracing
During a seismic event, forces can quickly build up that may cause a lighting fixture to tear loose from its ceiling mountings. Though the Griplock® Lighting Seismic Bracing System won’t prevent movement during a seismic event altogether, it is designed to limit such movement, saving lives and minimizing property damage.
Seismic requirements for Fixture tie off in ceiling grid SDC D
https://www.thebuildingcodeforum.com/forum/threads/seismic-requirements-for-fixture-tie-off-in-ceiling-grid-sdc-d.10853/
When a piece of equipment is required to be braced it must be restrained against movement in each direction. In the case of a rectangular device such as a rectangular light fixture it needs to also be braced to keep it from rotating in plan. When wires are used to brace the equipment you will need wires on opposite sides of the device.
R 16I -9 - California
https://www.dgs.ca.gov/-/media/Divisions/DSA/Publications/interpretations_of_regs/IR_16-9.pdf?la=en&hash=577ED9237166FA3DC2D34DBD24B42BC2836AB4FD
Luminaires shall be separated from suspended, braced building system components by a clear distance equal to at least 0.75 times the length of the pendant. 1.1.4 When it can be demonstrated by rational analysis that pendant luminaires (or adjacent components) will swing less than 45 degrees in the maximum credible earthquake, luminaire
6.4.9.3 Pendant Light Fixtures Provisions
http://femae74.atcouncil.org/docman/abbreviated/section-6-4/65-59-femae-74-chapter6-4-9-3
hung lighting fixtures must be supported directly from the structure above using no less than number 9-gauge (3.80 mm) wire or an approved alternate support. The ceiling suspension system may not provide any direct support. RETROFIT STANDARDPROVISIONS ASCE/SEI 41-06, Seismic Rehabilitation of Existing Buildings, (ASCE, 2007) classifies light
Support and Bracing Requirements for Ceiling …
https://www.sanjoseca.gov/Home/ShowDocument?id=27495
For ceiling areas exceeding 2500 square feet, a seismic separation joint shall be provided to divide the ceiling into areas not exceeding 2500 square feet and having a ratio of the long to short dimension not greater than 4:1. Each ceiling area shall be capable to allow ¾ inch movement, installed and braced per this guideline
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