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T-BAR GRID/LIGHTING DETAILS 2 <br />DETAIL 'A' <br />3/4" MIN. CLR <br />6" <br />2" <br /> MIN. <br />VERTICAL STRUT 4 <br />SOFFIT SECTION/DETAIL 1 <br />(E) AC UNIT <br />YORK <br />MODEL #B3CH068A258 <br />SEE MECH. PLANS <br />1 32 <br />D <br />A <br />B <br />C <br />Revision Date <br />DRAW BY: <br />SHEET NO.: <br />SCALE: <br />No. <br />DATE: <br />OF <br />DO <br />M <br />I <br />N <br />O <br />' <br />S <br /> <br />P <br />I <br />Z <br />Z <br />A <br /> <br /> <br /># <br />7 <br />8 <br />1 <br />9 <br />16 <br />0 <br />1 <br /> <br />W <br />E <br />S <br />T <br /> <br />1 <br />7 <br />T <br />H <br /> <br />S <br />T <br />R <br />E <br />E <br />T <br />SU <br />I <br />T <br />E <br /> <br />" <br />F <br />1 <br />" <br />SA <br />N <br />T <br />A <br /> <br />A <br />N <br />A <br />, <br /> <br />C <br />A <br /> <br />9 <br />2 <br />7 <br />0 <br />6 <br />A.3 <br />- <br />N <br />O <br />T <br />E <br />S <br />suspended ceiling compression struts adequate to <br /> resist the vertical load induced by the splayed <br />bracing wires. Struts not exceeding the heights <br />specified below may be used (provide calculations <br />or approval report for alternate): <br />1) 8' - One 3 5/8" 25 ga metal stud <br />2) 10' - Two 1 5/8" 25 ga metal studs oriented <br />perpendicular (flange of one stud connected to <br />the web of the other stud) and connected <br />every 12" along their length <br />3) 15' - Two 2 ½" 25 ga metal studs, oriented and <br /> connected per item 2 <br />4) 20' - Two 1 5/8" metal studs, oriented and <br /> connected per item 2 <br />(suspended ceiling compression struts ) <br />LIGHT FIXTURE HOUSE TO STRUCTURAL NOTES: <br />- Fixtures less than 10 pounds, provide one #12 gage wire (may be slack) <br />- Fixtures 11 - 55 pounds, provide two #12 gage wires (may be slack) <br />- Fixtures 56 pounds or more shall be supported directly from the structure <br /> above without using the ceiling suspension system for direct support <br />- Pendant hung fixtures shall be supported directly from the structure <br /> above using #9 gage wire. <br />duct work that are not provided with bracing restraints for <br />horizontal forces. Cable trays and electrical conduits shall be <br />supported independently of the ceiling." <br />'The suspended ceiling lateral force-bracing members shall <br />be located a <br />'NOTE: <br />18.40.100 Added CBC 1613.7 – Suspended ceiling. <br />Section 1613.7 is added to Chapter 16 of the 2016 California Building Code to read as follows: <br />1613.7 Suspended Ceilings. Minimum design and installation standards for suspended ceilings <br />shall be determined in accordance with the requirements of Section 2506.2.1 of this Code and <br />this Subsection. <br />1613.7.1 Scope. This part contains special requirements for suspended ceilings and <br />lighting systems. Provisions of Section 13.5.6 of ASCE 7 shall apply except as modified <br />herein. <br />1613.7.2 General. The suspended ceilings and lighting systems shall be limited to 6 feet <br />below the structural deck unless the lateral bracing is designed by a licensed engineer or <br />architect. <br />1613.7.3 Sprinkler Heads. All sprinkler heads (drops) except fire-resistance-rated <br />floor/ceiling or roof/ceiling assemblies, shall be designed to allow for free movement of <br />the sprinkler pipes with oversize rings, sleeves or adaptors through the ceiling tile. <br />Sprinkler heads and other penetrations shall have a 2-inch (50 mm) oversizing ring, <br />sleeve or adapter through the ceiling tile to allow for free movement of at least 1-inch (25 <br />mm) in all horizontal directions. Alternatively, a swing joint that can accommodate 1-inch <br />(25 mm) of ceiling movement in all horizontal directions is permitted to be permitted to be <br />provided at the top of the sprinkler head extension. <br />Sprinkler heads penetrating fire-resistance-rated floor/ceiling or roof/ceiling assemblies <br />shall comply with Section 714. <br />1613.7.4 Special Requirements for Means of Egress. Suspended ceiling assemblies <br />located along a means of egress serving an occupant load of 30 or more shall comply <br />with the following provisions. <br />1613.7.4.1 General. Ceiling suspension systems shall be connected and braced <br />with vertical hangers attached directly to the structural deck along the means of <br />egress serving an occupant load of 30 or more and lobbies accessory to Group A <br />Occupancies. Spacing of vertical hangers shall not exceed 2 feet (610 mm) on <br />center along the entire length of the suspended ceiling assembly located along the <br />means of egress or at the lobby. <br />1613.7.4.2 Assembly Device. All lay-in panels shall be secured to the suspension <br />ceiling assembly with two hold-down clips minimum for each tile within a 4-foot <br />(1219 mm) radius of the exit lights and exit signs. <br />1613.7.4.3 Emergency Systems. Independent supports and braces shall be <br />provided for all appendages such as light fixtures, air diffusers, exit signs, and <br />similar elements. <br />1613.7.4.4 Supports for Appendage. Separate support from the structural deck <br />shall be provided for all appendages such as light fixtures, air diffusers, exit signs, <br />and similar elements. <br />minimum of 6 inches from all horizontal piping or <br />- <br />P <br />R <br />O <br />P <br />O <br />S <br />E <br />D <br /> <br />R <br />O <br />O <br />F <br /> <br />P <br />L <br />A <br />N <br />- <br />S <br />O <br />F <br />F <br />I <br />T <br />, <br /> <br />T <br />- <br />B <br />A <br />R <br /> <br />D <br />E <br />T <br />A <br />I <br />L <br />S <br />SEE TRUCT. S.1 PLAN <br />1601 W 17th St #F1 - <br />101117289-90, 20181377, <br />30146555, 401385601/22/2024