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"V" STRUT
<br />OPPOSITE FREE WALLS.
<br />FIXTURES GREATER
<br />THAN 50 POUNDS,
<br />PROVIDE SEPARATE
<br />SUPPORT
<br />PROVIDE VERTICAL
<br />HANGER WIRES @ 48"
<br />O.C. ON MAIN RUNNERS
<br />PROVIDE
<br />COMPRESSION POST
<br />AND (4) #12 GA
<br />SPLAYED BRACING
<br />WIRES @ MAX 12'-0"
<br />O.C. ON MAIN
<br />RUNNERS AND 6'-0"
<br />MAX FROM WALL.
<br />PERIMETER
<br />STARTER WALLS
<br />LAY-IN PANEL, SEE
<br />FINISH SCHEDULE
<br />FOR TYPE.
<br />PANEL SUSPENSION
<br />GRID, SEE FINISH
<br />SCHEDULE FOR TYPE.
<br />6
<br />A64.3
<br />6
<br />A64.3
<br />5
<br />A64.3
<br />SUSPENDED LAY-IN CEILING NOTES:
<br />(FOR CEILING SYSTEMS WHOSE TOTAL WEIGHT, INCLUDING AIR CONDITIONING/HEATING GRILLS
<br />AND LIGHT FIXTURES, DOES NOT EXCEED 4 PSF)
<br />SEE DSA IR 25-2.13 FOR ALL APPLICABLE REQUIREMENTS
<br />1. CEILING WIRE SHALL BE CLASS 1 ZINC COATED (GALVANIZED) CARBON STEEL CONFORMING TO
<br />ASTM A641.WIRE SHALL BE #12 GA. (MIN.) WIRE SHALL BE SOFT ANNEALED AND MIN. TENSILRE
<br />STRENGTH = 70 KSI. MAIN RUNNERS, CROSS RUNNERS, SPLICES, EXPANSION DEVICES, AND
<br />INTERSECTION CONNECTORS SHALL BE DESIGNED TO CARYY A MEAN ULTIMATE TEST LOAD OF
<br />NOT LESS THAN 180 LBS. IN COMPRESSION AND TENSION PER ASTM E580 SECTION 5.1.2.
<br />2. #12 GAGE HANGER WIRES MAY BE USED FOR UP TO AND INCLUDING 4'-0" X 4'-0" GRID SPACING
<br />AND SHALL BE ATTACHED TO MAIN RUNNERS.
<br />3. PROVIDE 12 GA. HANGER WIRES AT THE ENDS OF ALL MAIN AND CROSS RUNNERS WITHIN 8"
<br />FROM THE SUPPORT OR WITHIN 1/4 OF THE LENGTH OF THE END TEE, WHICHEVER IS LEAST, FOR
<br />THE PERIMETER OF THE CEILING AREA. PERIMETER WIRES ARE NOT REQUIRED WHEN THE
<br />LENGTH OF THE END TEE IS EIGHT (8) INCHES OR LESS.
<br />4. PROVIDE TRAPEZE OR OTHER SUPPLEMENTARY SUPPORT MEMBERS AT OBSTRUCTIONS TO
<br />TYPICAL HANGER SPACING. PROVIDE ADDITIONAL HANGERS, STRUTS OR BRACES AS REQUIRED
<br />AT ALL CEILING BREAKS, SOFFITS, OR DISCONTINUOUS AREAS. HANGER WIRES THAT ARE MORE
<br />THAN 1 (HORIZONTAL) IN 6 (VERTICAL) OUT OF PLUMB ARE TO HAVE COUNTER-SLOPING WIRES.
<br />5. CEILING GRID MEMBERS SHALL BE ATTACHED TO TWO (2) ADJACENT WALLS PER ASCE 7-10,
<br />SECTION 13.5.6.2(b). CEILING GRID MEMBERS SHALL BE AT LEAST 3/4" CLEAR OF OTHER WALLS. IF
<br />WALLS RUN DIAGONALLY TO CEILING GRID MEMBERS, ONE END OF MAIN AND CROSS RUNNERS
<br />SHALL BE FREE, AND A MINIMUM OF 3/4" CLEAR OF WALL.
<br />6. THE WIDTH OF THE PERIMETER SUPPORTING CLOSURE ANGLE SHALL BE NOT LESS THAN 2
<br />INCHES.
<br />7. AT THE PERIMETER OF THE CEILING AREA WHERE MAIN OR CROSS RUNNERS ARE NOT
<br />CONNECTED TO THE ADJACENT WALL, PROVIDE INTERCONNECTION BETWEEN RUNNERS AT THE
<br />FREE END TO PREVENT LATERAL SPREADING. A METAL STRUT OR A 16 GA WIRE WITH A POSITIVE
<br />MECHANICAL CONNECTION TO THE RUNNER MAY BE USED. WHERE THE PERPENDICULAR
<br />DISTANCE FROM THE WALL TO THE FIRST PARALLEL RUNNER IS 8" OR LESS, THIS INTERLOCK IS
<br />NOT REQUIRED.
<br />8. EXPANSION JOINTS SHALL BE PROVIDED IN THE CEILING AT INTERSECTIONS OF CORRIDORS
<br />AND AT JUNCTIONS OF CORRIDORS WITH LOBBIES OR OTHER SIMILAR AREAS.
<br />9. PROVIDE BRACING ASSEMBLIES CONSISTING OF A COMPRESSION STRUCT AND FOUR (4) #12
<br />GA. SPLAYED BRACING WIRES ORIENTED 90° FROM EACH OTHER.
<br />10. LATERAL FORCE BRACING ASSEMBLIES SHALL BE SPACED PER TABLE 1 FOR ALL VALUES OF
<br />THE COMPONENT IMPORTANCE FACTOR (IP) OF THE CEILING(PER DSA REQUIREMENTS FOR
<br />SCHOOL BUILDINGS PER IR 25-2.13).WHERE, AS DEFINED IN ASCE 7-10, SEC.13.3.1:
<br />z= HEIGHT IN STRUCTUR OF POINT ATTACHMENT OF CEILING WITH RESPECT TO THE BASE.
<br />h= AVERAGE ROOF HEIGHT OF THE STRUCTURE WITH RESPECT TO THE BASE.
<br />PROVIDE BRACING ASSEMBLIES AT LOCATIONS NOT MORE THAN 6'-0" FROM EACH PERIMETER
<br />WALL AND AT THE EDGE OF VERTICAL CEILING OFFSETS. THE MAXIMUM SLENDERNESS RATIO
<br />(kL/R) OF THE COMPRESSION STRUT IS 200 OR LESS.
<br />11. THE SLOPE OF BRACING WIRES SHALL NOT EXCEED 45 DEGREES FROM THE PLANE OF THE
<br />CEILING AND WIRES SHALL BE TAUT. SPLICES IN WIRES ARE NOT PERMITTED WITHOUT SPECIAL
<br />DSA APPROVAL.
<br />12. COMPRESSION STRUTS SHALL NOT BE MORE THAN 1 (HORIZONTAL) IN 6 (VERTICAL) OUT OF
<br />PLUMB.
<br />13. SUSPENDED ACOUSICTAL CEILING SYSTEMS WITH A CEILING AREA OF 144 SQUARE FEET OR
<br />LESS, AND FIRE RATED SUSPENDED ACOUSTICAL CEILING SYSTEMS WITH A CEILING AREA OF 96
<br />SQUARE FEET OR LESS, SURROUNDED BY WALLS WHICH CONNECT DIRECTLY TO THE STRUCTURE
<br />ABOVE OR WALLS INDEPENDENTLY BRACED ABOVE CEILING TO STRUCTURE ABOVE, DO NOT
<br />REQUIRE BRACING ASSEMBLIES WHEN ATTACHED TO TWO ADJACENT WALLS.
<br />14. FOR CEILING AREAS EXCEEDING 2500 SQUARE FEET A SEISMIC SEPARATION JOINT SHALL BE
<br />PROVIDED TO DIVIDE THE CEILING INTO AREAS NOT EXCEEDING 2500 SQUARE FEET.
<br />15. PENETRATIONS THROUGH THE CEILING FOR SPRINKLER HEADS AND OTHER SIMILAR DEVICES
<br />THAT ARE NOT INTEGRALLY TIRED TO THE CEILING SYSTEM IN THE LATERAL DIRECTION SHALL
<br />HAVE A (2) INCH OVERSIZED RING, SLEEVE OR ADAPTER TO ALLOW FREE MOVEMENT OF (1) INCH
<br />IN ALL HORIZONTAL DIRECTIONS.
<br />16. FASTEN #12 HANGER WIRES WITH NOT LESS THAN THREE (3) TIGHT TURNS. FASTEN #12
<br />BRACING WIRES WITH FOUR (4) TIGHT TURNS. MAKE ALL TIGHT TURNS WITHIN A DISTANCE OF
<br />1-1/2 INCHES. HANGER OR BRACING WIRE ANCHORS TO THE STRUCTURE SHOULD BE INSTALLED
<br />IN SUCH A MANNER THAT THE DIRECTION OF THE ANCHOR ALIGNS AS CLOSELY AS POSSIBLE WITH
<br />THE DIRECTION OF THE WIRE.
<br />NOTE: WIRE TURNS MADE BY MACHINE WHERE BOTH STRANDS HAVE BEEN DEFORMED OR BENT
<br />IN WRAPPING CAN WAIVE THE 1-1/2" REQUIREMENT, BUT THE NUMBER OF TURNS SHOULD BE
<br />MAINTAINED, AND BE AS TIGHT AS POSSIBLE.
<br />17. SEPARATE ALL CEILING HANGING AND BRACING WIRES AT LEAST SIX (6) INCHES FROM ALL
<br />UNBRACED DUCTS, PIPES, CONDUIT, ETC.
<br />18. WHEN DRILL-IN CONCRETE ANCHORS OR SHOT-IN ANCHORS ARE USED IN REINFORCED
<br />CONCRETE FOR HANGER WIRES, 1 OUT OF 10 MUST BE FIELD TESTED FOR 200 POUNDS OF
<br />TENSION. WHEN DRILLED-IN CONCRETE ANCHORS ARE USED FOR BRACING WIRES, 1 OUT OF 2
<br />MUST BE FIELD TESTED FOR 440 LBS. OF TENSION. SHOT-IN ANCHORS IN CONCRETE ARE NOT
<br />PERMITTED FOR BRACING WIRES.
<br />NOTE: DRILLED-IN OR SHOT-IN ANCHORS REQUIRE SPECIAL DSA APPROVAL PRIOR TO USE IN
<br />PRESTRESSED CONCRETE.
<br />19. ATTACH ALL LIGHT FIXTURES AND CEILING MOUNTED AIR TERMINALS TO THE CEILING GRID
<br />RUNNERS TO RESIST A HORIZONTAL FORCE EQUAL TO THE WEIGHT OF THE FIXTURES. SCREWS
<br />OR APPROVED FASTENERS ARE REQUIRED (USE TWO #8 SELF-TAPPING TEK SCREWS AT EACH
<br />END, OR APPROVED EQUAL).
<br />20. FLUSH OR RECESSED LIGHT FIXTURES, WEIGHT LESS THAN 56 LBS, AND MECHANICAL
<br />TERMINALS AND SERVICES WIEGHT LESS THAN 20 LBS., MAY BE SUPPORTED DIRECTLY ON THE
<br />RUNNERS OF A HEAVY DUTY GRID SYSTEM BUT, IN ADDITION, THEY MUST HAVE A MINIMUM OF
<br />TWO (2) #12 GA. SLACK SAFETY WIRES ATTACHED TO THE FIXTURE AT DIAGONAL CORNERS AND
<br />ANCHORED TO THE STRUCTURE ABOVE. ALL 4'-0" X 4'-0" LIGHT FIXTURES MUST HAVE SLACK
<br />SAFETY WIRES AT EACH CORNER.
<br />ALL FLUSH OR RECESSED LIGHT FIXTURES WEIGHING 56 LBS. OR MORE AND MECHANICAL
<br />TERMINALS AND SERVICES, WEIGHING 20 LBS. ORE MORE, MUST BE INDEPENDENTLY SUPPORTED
<br />BY NOT LESS THAN FOUR (4) TAUT #12 GA. WIRES EACH ATTACHED TO THE FIXTURE AND TO THE
<br />STRUCTURE ABOVE. THESE WIRES, INCLUDING THEIR ATTACHMENT TO THE STRUCTURE ABOVE,
<br />MUST BE CAPABLE OF SUPPORTING FOUR (4) TIMES THE WEIGHT OF THE UNIT.
<br />21. SUPPORT SURFACE-MOUNTED LIGHT FIXTURES BY AT LEAST TWO POSITIVE DEVICES WHICH
<br />SURROUND THE CIELING RUNNER AND WHICH ARE SUPPORTED FROM THE STRUCTURE ABOVE BY
<br />A #12 GAGE WIRE. SPRING CLIPS OR CLAMPS THAT CONNECT ONLY TO THE RUNNER ARE NOT
<br />ACCEPTABLE. PROVIDE ADDITIONAL SUPPORTS WHEN LIGHT FIXTURES ARE 8 FT OR LONGER.
<br />MAXIMUM SPACING BETWEEN SUPPORTS SHALL NOT EXCEED 8 FT.
<br />22. N/A
<br />23. THE CEILING GRID SYSTEM MUST BE RATED AS HEAVY DUTY AS DEFINED BY ASTM C635.
<br />MANUF. CLASS. MAIN RUNNER CROSS RUNNER RUNNER SPLICE
<br />ARMSTRONG HD PRELUDE 15/16" (7301) XL7340/XL7328 INTEGRAL TO 7301
<br />CERTAINTEED HD 15/16" CLASSIC (CS1212-20) CS2-12-12/CS4-12-12 DWSC-200
<br />USG HD DX (DX26) DX (DX216/DX424) INTEGRAL TO DX
<br />12 GA.HANGER WIRE, SEE NOTES #2 & 7
<br />LAY-IN CEILING PANEL
<br />MAIN RUNNER OR CROSS TEE
<br />SLOTTED ANGLE "V" STRUT SPACER W/
<br />HORIZ. 6d RING SHANK NAIL THROUGH
<br />SLOTS @ RUNNER WHERE OCCURS
<br />SEE NOTE #5
<br />FACE OF WALL
<br />3/4"
<br />WALL ANGLE
<br />7/8"
<br />M7 7/8" x 7/8" WALL ANGLE FOR DX AND DXT
<br />SECURE TO WALL STRUCTURE @ EA. STUD PER
<br />NOTE # 5 ON 1/A64.1
<br />ACM-7 SEISMIC CLIP PER ICC ESR-1222
<br />ACM-7 CLIP, (2) #10 - 1-1/4" TEK SCREW
<br />TO M7 WALL ANGLE
<br />GUIDING SCREW
<br />TO COMPLY WITH FIGURE 1 ACM7 CLIP
<br />UNRESTRAINED OF ICC ESR-1222
<br />8" MAX.
<br />#10 WS - 1 1/4" SCREW, @ EA. STUD
<br />12 GA.HANGER WIRE, SEE NOTES #2 & 7
<br />M7 7/8" X 7/8" WALL ANGLE FOR DX AND DXT
<br />SECURE TO WALL STRUCTURE @ EA. STUD PER
<br />NOTE # 5 ON 1/A64.1
<br />LAY-IN CEILING PANEL
<br />MAIN RUNNER OR
<br />CROSS TEE
<br />8" MAX.
<br />FACE OF WALL
<br />ACM-7 SEISMIC CLIP PER ICC ESR-1222
<br />@ EACH MAIN RUNNER
<br />#10 WS - 1 1/4" SCREW, @ EA. STUD
<br />WALL ANGLE
<br />7/8"
<br />#7 7/8" SCREW
<br />TO COMPLY WITH FIGURE 2 ACM7 CLIP
<br />RESTRAINED OF ICC ESR-1222
<br />ACM-7 CLIP, (2) #10 - 1-1/4" TEK SCREW
<br />TO M7 WALL ANGLE
<br />MAX
<br />45° TYP.
<br />MAIN RUNNER
<br />CROSS RUNNER
<br />2"
<br />1 1/2" MAX
<br />1/4" MACHINE BOLT
<br />COMPRESSION POST SEE
<br />TABLE AND DET.
<br />LATERAL FORCING BRACING #
<br />12 GA WIRE SECURED TO MAIN
<br />RUNNER PER NOTES # 1, #2 & 3
<br />AND CONNECTION TO
<br />STRUCTURE PER DETAIL
<br />#12 GA VERTICAL
<br />HANGER WIRE @
<br />4'-0"
<br />4
<br />A64.3
<br />/6 A64.4
<br />/14 A64.4
<br />NOTE: ADDITIONAL
<br />CONNECTION DETAILS ON A64.4
<br />6"
<br />OV
<br />E
<br />R
<br />L
<br />A
<br />P
<br />1'
<br />
<br />-
<br />
<br />0
<br />"
<br />5"
<br />COMPRESSION
<br />STRUT. SEE TABLE
<br />BELOW
<br />SECURE SPLICE
<br />SECTIONS TOGETHER
<br />WITH (2) #8 X 1" SELF
<br />TAPPING SHT. MTL.
<br />SCREWS (S.T.S.M.S.)
<br />CRIMP BOTTOM FLAT
<br />AND ATTACH TO MAIN
<br />RUNNER WITH 1/4"
<br />DIAM. MACHINE BOLT
<br />MAIN RUNNER
<br />COMPRESSION POST TABLE
<br />FOR TUBING & METAL STUD:
<br />1. USE 1/2" DIAM. EMT FOR MAXIMUM
<br />LEGNTH UP TO 2'-6"
<br />2. USE 3/4" DIAM. EMT FOR MAXIMUM
<br />LENGTH UP TO 4'-0"
<br />3. USE 1" DIAM. EMT FOR MAXIMUM
<br />LENGTH UP TO 5'-6"
<br />4. USE 1 1/2" DIA EMT FOR MAXIMUM
<br />LENGTH UP TO 8'-6"
<br />5. USE 1 5/8" x 25 GA METAL STUDS
<br />FOR MAXIMUM LENGTH UP TO 7'-2"
<br />6. USE DOUBLE 1 5/8" x 25 GA METAL
<br />STUDS FOR MAX. LENGTH UP TO 16'-0"
<br />7. USE DOUBLE 2 1/2" x 25 GA METAL
<br />STUDS FOR MAX. LENGTH UP TO 17'-0"
<br />8. USE DOUBLE 3 5/8" x 25 GA METAL
<br />STUDS FOR MAX. LENGTH UP TO 22'-8"
<br />C SHAPED METAL STUDS
<br />#6 S.T.S.M.S. @ 12" O.C.
<br />NOTES:
<br />1. COMPRESSION STRUTS SHALL NOT
<br />REPLACE HANGER WIRES.
<br />2. CEILING NOT SHOWN FOR CLARITY
<br />CRIMP TOP OF
<br />TUBING FLAT &
<br />ATTACH WITH (2)
<br />FHWS
<br />WOOD BLOCKING
<br />BETWEEN JOISTS ABOVE
<br />PER STRUCTURAL
<br />THIS DOCUMENT CONTAINS INFORMATION PROPRIETARY TO SVA ARCHITECTS
<br />INC. AND IS FURNISHED IN CONFIDENCE FOR THE LIMITED PURPOSE OF
<br />EVALUATION, BIDDING OR REVIEW. THIS DOCUMENT OR ITS CONTENTS MAY
<br />NOT BE USED FOR ANY OTHER PURPOSE AND MAY NOT BE REPRODUCED OR
<br />DISCLOSED TO OTHERS WITHOUT THE PRIOR WRITTEN CONSENT OF SVA
<br />ARCHITECTS INC. ALL RIGHTS RESERVED, © COPYRIGHT 2018.
<br />SCALE:
<br />REVISIONS:
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<br />:
<br />6 HUTTON CENTRE DR, SUITE 1150 SANTA ANA, CA 92707
<br />T 949.809.3380 WWW.SVA-ARCHITECTS.COM
<br />DATE ISSUED:
<br />PROJECT NO:
<br />As indicated
<br />07/08/24
<br />A64.3
<br />CEILING DETAILS
<br />- ACOUSTICAL
<br />TILE
<br />2022-40123
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<br />1 1/2" = 1'-0"2CEILING PLAN DETAIL, TYP.
<br />1 1/2" = 1'-0"1CEILING NOTES (LAY-IN PANEL)
<br />3" = 1'-0"6CEILING PERIMETER AT FREE WALL
<br />3" = 1'-0"5CEILING PERIMETER AT FIXED WALL
<br />1 1/2" = 1'-0"3CEILING SPAY WIRE BRACING DETAIL
<br />3" = 1'-0"4COMPRESSION STRUT DET. @ ACT
<br />1
<br />DESCRIPTION DATE
<br />1 ASI #01 04/09/25
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