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THIS DOCUMENT PROVIDES THE IBC -REFERENCED STANDARDS FOR THE INSTALLATION OF
<br />SUSPENSION SYSTEMS FOR ACOUSTICAL LAY -IN CEILINGS. INCORPORATION OF THIS DOCUMENT
<br />WILL PROVIDE A MORE UNIFORM STANDARD FOR INSTALLATION AND INSPECTION. THIS DOCUMENT
<br />IS DESIGNED TO ACCOMPLISH THE INTENT OF THE INTERNATIONAL BUILDING CODE (IBC) WITH
<br />REGARD TO THE REQUIREMENTS FOR SEISMIC DESIGN CATEGORY D, E, AND F FOR SUSPENDED
<br />CEILINGS AND RELATED ITEMS, UNLESS SUPPORTED BY ENGINEERING, THE SUSPENSION SYSTEM
<br />SHALL BE INSTALLED PER THE REQUIREMENTS FOR SEISMIC DESIGN CATEGORY (SDC) D, E AND F PER
<br />THE IBC. MANUFACTURERS' RECOMMENDATIONS SHOULD BE FOLLOWED.
<br />GENERAL RECOMMENDATIONS
<br />® REFERENCED SOURCES PER HIERARCHY: 2018 IBC (INTERNATIONAL BUILDING CODE),
<br />AMERICAN SOCIETY OF TESTING MATERIALS (ASTM C 635, ASTM C 636, ASTM E 580/ASTM E 580M),
<br />AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE7-05) AND CEILINGS AND INTERIOR SYSTEMS
<br />CONSTRUCTION ASSOCIATION (CISCA).
<br />® PARTITIONS THAT ARE TIED TO THE CEILING AND ALL PARTITIONS GREATER THAN 6 FEET IN HEIGHT
<br />SHALL BE LATERALLY BRACED TO THE STRUCTURE. BRACING SHALL BE INDEPENDENT OF THE CEILING
<br />SPLAY BRACING SYSTEM. SOURCE: ASCE 7-05 SECTION 13.5.8.1
<br />® FOR FURTHER INFORMATION ON BRACING OF NON -LOAD BEARING PARTITIONS REFER TO NWCB
<br />TECHNICAL DOCUMENT #200-501
<br />• ALL MAIN BEAMS ARE TO BE HEAVY DUTY (HD). SOURCE ASCE 7-05 SECTION 13.5.6.2.2 a
<br />w ALL CROSS TEES SHALL BE CAPABLE OF CARRYING THE DESIGN LOAD WITHOUT EXCEEDING
<br />DEFLECTION EQUAL TO 1/360 OF ITS SPAN, SOURCE CISCA ZONES 3-4
<br />COMPRESSION STRUTS OR
<br />BRACES SHALL BE SPACED A
<br />MAXIMUM OF 6-0" FROM EDGE
<br />OF WALLS AND MAXIMUM OF
<br />12'-0" O.C. IN FIELD OF
<br />CEILING.SEE COMPRESSION
<br />STRUT SCHEDULE
<br />11/2" COLD ROLLED CHANNEL
<br />NO SCALE
<br />12 GA. VERT HANGER WIRE LEVEL
<br />CEILING PRIOR TO SETTING TUBE
<br />/// DRILL 5/32" HOLE FOR 1/8" BOLT
<br />AND LOCK- NUT AFTER CEILING
<br />SYSTEM IS LEVELED
<br />8GA, VERT HANGER WIRE AT
<br />4'-0" O.C. MAXIMUM. 6"
<br />MAXIMUM FROM END OF
<br />CHANNEL -TYPICAL
<br />(4)12GA. SPLAYED BRACE
<br />WIRES -TYPICAL
<br />5/8" TYPE 'X' GYP. BD.
<br />SCREWED 12" O.C.
<br />7/8" HAT CHANNEL
<br />24" O.C. MAX.
<br />FIGURE 3
<br />MAXIMUM RECOMMENDED LENGTHS FOR
<br />VERTICAL STRUTS
<br />EMT CONDUIT
<br />1/2" EMT conduit
<br />up to Y-10"
<br />3/4" EMT conduit
<br />up to 7 8"
<br />1" EMT conduit
<br />up to 9-9"
<br />METAL STUDS
<br />Single's-5/8" metal Stud (20 gauge)
<br />up to 12 0"
<br />Back to back 1 5/8' metal stud
<br />(20 gauge)
<br />up to "IS 0'
<br />Single 2-112" metal stud (20 gauge)
<br />up to 13 6"
<br />Back-to-back 2-1/2" metal stud
<br />(25 gauge)
<br />up to 15'-0"
<br />SOURCE: PORTLAND BUILDING DEPARTMENT
<br />NOTE PLENUM AREAS GREATER THAN 15'-0" WILL REQUIRE
<br />ENGINEERING CALCULATIONS.
<br />NOTE: SECURE STRUCTURAL WIRES TO STRUCTURAL STEEL MEMBERS ABOVE
<br />ONLY - DO NOT ATTACH TO ROOF DECK.
<br />n� C
<br />ml- 911''
<br />s
<br />FIGURE 2
<br />LATERAL FORCE BRACING
<br />R LESS
<br />45' OR LESS
<br />THIS DOCUMENT PROVIDES THE IBC -REFERENCED STANDARDS FOR THE
<br />INSTALLATION OF SUSPENSION SYSTEMS FOR ACOUSTICAL LAY -IN
<br />CEILINGS. INCORPORATION OF THIS DOCUMENT WILL PROVIDE A MORE
<br />UNIFORM STANDARD FOR INSTALLATION AND INSPECTION. THIS
<br />DOCUMENT IS DESIGNED TO ACCOMPLISH THE INTENT OF THE
<br />INTERNATIONAL BUILDING CODE (IBC) WITH REGARD TO THE
<br />REQUIREMENTS FOR SEISMIC DESIGN CATEGORY D, E, AND F FOR
<br />SUSPENDED CEILINGS AND RELATED ITEMS. UNLESS SUPPORTED BY
<br />ENGINEERING, THE SUSPENSION SYSTEM SHALL BE INSTALLED PER THE
<br />REQUIREMENTS FOR SEISMIC DESIGN CATEGORY (SDC) D, E AND F PER
<br />THE IBC. MANUFACTURERS' RECOMMENDATIONS SHOULD BE
<br />FOLLOWED.
<br />GENERAL RECOMMENDATIONS
<br />® REFERENCED SOURCES PER HIERARCHY: 2009 IBC (INTERNATIONAL BUILDING CODE),
<br />AMERICAN SOCIETY OF TESTING MATERIALS ASTM C 635 ASTM C 636 ASTM E 580 ASTM E 580M
<br />AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE7-05) AND CEILINGS AND INTERIOR SYSTEMS
<br />CONSTRUCTION ASSOCIATION (CISCA):
<br />PARTITIONS THAT ARE TIED TO THE CEILING AND ALL PARTITIONS GREATER THAN 6 FEET IN HEIGHT
<br />SHALL BE LATERALLY BRACED TO THE STRUCTURE. BRACING SHALL BE INDEPENDENT OF THE CEILING
<br />SPLAY BRACING SYSTEM. SOURCE: ASCE 7-05 SECTION 13.5.8.1
<br />® FOR FURTHER INFORMATION ON BRACING OF NON -LOAD BEARING PARTITIONS REFER TO NWCB
<br />TECHNICAL DOCUMENT#200-501
<br />ALL MAIN BEAMS ARE TO BE HEAVY DUTY (HD). SOURCE ASCE 7-05 SECTION 13.5.6.2.2 a
<br />® ALL CROSS TEES SHALL BE CAPABLE OF CARRYING THE DESIGN LOAD WITHOUT EXCEEDING
<br />DEFLECTION EQUAL TO 1/360 OF ITS SPAN. SOURCE CISCA ZONES 3-4
<br />® THESE RECOMMENDATIONS ARE INTENDED FOR SUSPENDED
<br />CEILINGS INCLUDING GRID, PANEL OR TILE, LIGHT FIXTURES AND
<br />AIR TERMINALS WEIGHING NO MORE THAN 4LBS PER SQUARE
<br />FOOT. SOURCE ASCE 7-05 SECTION 13.5.6.1
<br />® ALL WIRE TIES ARE TO BE THREE TIGHT TURNS AROUND ITSELF
<br />WITHIN THREE INCHES. TWELVE GAGE HANGER WIRE SPACED 4
<br />FOOTONCENTER (FIGURE 1). SOURCE ASTM C 636 ITEM 2.3.4
<br />® CHANGES IN CEILING PLANES WILL REQUIRE POSITIVE BRACING,
<br />SOURCE: ASCE 7-05 '13.5.6.2.2 f
<br />12 GAGE SPLAYED
<br />RRACE WIRES
<br />FIGURE 3
<br />MAXIMUM RECOMMENDED LENGTHS FOR
<br />VERTICAL STRUTS
<br />EMT CONDUIT
<br />1/2" EMT conduit
<br />up to 5'-10"
<br />3/4" EMT conduit
<br />up to T-8"
<br />1" EMT conduit
<br />up 1:0 9'-9"
<br />METAL STUDS
<br />Single 1-5/8" metal stud (20 gauge)
<br />up to 12' 0"
<br />Back-to-back 1-5/8" metal stud
<br />(20gauge)
<br />up to 1T-0"
<br />Single 2-1/2" metal Stud (20 gauge)
<br />up to IT-6"
<br />Back-to-back 2-1/2" metal stud
<br />(25 gauge)
<br />up to IT-0"
<br />SOURCE: PORTLAND BUILDING DEPARTMENT
<br />NOTE: PLENUM AREAS GREATER THAN 15'-0" WILL REQUIRE
<br />ENGINEERING CALCULATIONS.
<br />FIGURE 4a
<br />ATTACHED WALL MOLDING REQUIREMENTS
<br />_41"
<br />minimum
<br />2" (50 mrD
<br />FIGURE 4b
<br />UNATTACHED WALL MOLDING REQUIREMENTS
<br />l aximum 81 02
<br />WALL
<br />P
<br />%\
<br />��` minimum 3/4'`
<br />minimum'__✓ (19 mm) at
<br />2" (50 mm) unattached walls
<br />DESCRIPTION:
<br />THE CEILING CONSISTS OF HANGER WIRES ATTACHED TO THE STRUCTURE ABOVE, MAIN RUNNERS
<br />ATTACHED TO THE HANGERS, AND CROSS FURRING ATTACHED TO THE MAIN RUNNERS.
<br />APPROPRIATE GYPSUM OR CEMENT BOARD PANELS ARE SCREW ATTACHED TO RECEIVE FINAL
<br />:R
<br />COMMON USES:
<br />SUSPENDED GYPSUM BOARD OR CEMENT BOARD CEILINGS ARE PRIMARILY USED TO PROVIDE FLAT
<br />PLANE CEILINGS IN MOST TYPES OF BUILDINGS. THESE MAY BE DESIGNED TO PROVIDE FIRE
<br />PROTECTION, CONCEALMENT, AND ACOUSTICAL TREATMENT.
<br />LIMITATIONS:
<br />CARE MUST BE TAKEN IN CHOOSING THE CEILING SURFACE FOR AREAS EXPOSED TO HIGH HUMIDITY.
<br />IT IS DIFFICULT TO ADAPT THIS FRAMING SYSTEM TO CURVED, BARREL VAULT, OR DOME TYPE
<br />CEILINGS. LIMITED ACCESS CAN BE PROVIDED WITH THE INSTALLATION OF ACCESS PANELS. THE
<br />LEVELS OF ABUSE AND PENETRATION RESISTANCE IS NOT THAT OF A SUSPENDED METAL LATH AND
<br />PLASTER CEILING,
<br />ADVANTAGES:
<br />PROVIDES FLAT, MONOLITHIC CEILING SURFACES AT THE LEAST COST. CAN BE ADAPTED TO SEVERAL
<br />GYPSUM ASSOCIATION AND U.L. FIRE RATED FLOOR/CEILING ASSEMBLIES. ACOUSTICAL TILE AND
<br />ACOUSTICAL PLASTER PROVIDE GOOD SOUND ABSORPTION.
<br />VERSATILITY
<br />THESE CEILINGS ARE BEST INSTALLED IN FLAT PLANES, HOWEVER, INSTALLING FACETED CEILINGS OF
<br />VARIOUS SHAPES AND AT ANY ANGLE; ALLOWS NUMEROUS DESIGN OPTIONS. THE USE OF CEMENT
<br />BOARD PANELS ALLOWS THE USE OF THIS SYSTEM IN HIGH HUMIDITY AREAS. A VARIETY OF TEXTURES
<br />ARE AVAILABLE.
<br />STRUCTURAL DESIGN:
<br />1.HANGERS: SIZES BASED ON STATIC LOADS DEVELOPED BY STANDARD MAXIMUM CEILING
<br />SPACING AND LIMITED TO A SAFETY FACTOR OF 6.5, BUT NO LESS THAN 12 GAUGE WIRE. CEILING
<br />WEIGHT DETERMINES THE SIZE AND SPACING OF HANGER WIRE.
<br />2. RUNNERS AND CROSS FURRING: DEFLECTION IS LIMITED TO 1/360 OF THE SHORTEST SPAN UNDER
<br />THE CEILING LOAD.
<br />LATERAL FORCE BRACING (FIGURES 2 AND 3)
<br />® CEILINGS CONSTRUCTED OF LATH AND PLASTER OR GYPSUM BOARD, SCREW OR NAIL
<br />ATTACHED TO SUSPENDED MEMBERS THAT SUPPORT A CEILING ON ONE LEVEL EXTENDING
<br />FROM WALL TO WALL SHALL BE EXEMPT FROM THE LATERAL FORCE BRACING
<br />REQUIREMENTS. SOURCE: CISCA ZONES 3-4
<br />® LATERAL FORCE BRACING IS THE USE OF VERTICAL STRUTS (COMPRESSION POSTS) AND
<br />SPLAY WIRES (SEE FIGURE 2).
<br />® FOR CEILING AREAS EXCEEDING 1,000 SQUARE FEET, HORIZONTAL RESTRAINT OF THE
<br />CEILING TO THE STRUCTURAL SYSTEM (LATERAL FORCE BRACING) SHALL BE PROVIDED.
<br />SOURCE: ASCE 7-05 SECTION 13.5.6.2.2 c
<br />® LATERAL FORCE BRACING SHALL BE 12 FEET ON CENTER (MAXIMUM) AND BEGIN NO
<br />FARTHER THAN 6 FEET FROM WALLS. SOURCE: CISCA SEISMIC ZONES 3-4
<br />® SEISMIC SPLAY WIRES ARE TO BE FOUR 12 GAGE WIRES ATTACHED TO THE MAIN BEAM.
<br />WIRES ARE ARRAYED 90' FROM EACH OTHER AND AT AN ANGLE NOT EXCEEDING 45' FROM
<br />THE PLANE OF THE CEILING. SOURCE: CISCA SEISMIC ZONES 3-4
<br />® SEISMIC SPLAY WIRES SHALL BE ATTACHED TO THE GRID AND TO THE STRUCTURE IN SUCH
<br />A MANNER THAT THEY CAN SUPPORT A DESIGN LOAD OF NOT LESS THAN 200 POUNDS OR
<br />THE ACTUAL DESIGN LOAD, WITH A SAFETY FACTOR OF 2, WHICHEVER IS GREATER (FIGURE
<br />6b). SOURCE: CISCA ZONES 3-4
<br />"POWDER DRIVEN SHOT -IN -ANCHORS" WHEN USED FOR SEISMIC APPLICATION AS PART OF
<br />THE PRESCRIPTIVE PATH IN SEISMIC DESIGN CATEGORIES D, E AND F SHALL HAVE AN ICC-ES
<br />APPROVAL FOR SEISMIC APPLICATIONS AND SHALL REQUIRE"SPECIAL INSPECTION"
<br />IRRESPECTIVE OF THE TYPE OF OCCUPANCY CATEGORY THE STRUCTURE IS IN. ANCHORS
<br />FOR KICKER WIRES (SPLAYED WIRES INSTALLED FOR PURPOSES OTHER THAN SEISMIC
<br />RESTRAINT) ARE EXEMPT FROM REQUIREMENT. SOURCE: STATE OF OREGON, BUILDING
<br />CODES DIVISION.
<br />® SPLAY WIRES ARE TO BE WITHIN 2 INCHES OF THE CONNECTION OF THE VERTICAL STRUT
<br />TO SUSPENDED CEILING. SOURCE: CISCA SEISMIC ZONES 3-4
<br />0 RIDGED BRACING MAY BE USED IN LIEU OF SPLAY WIRES. SOURCE: ASCE SECTION 13.5.6.2.2
<br />C
<br />CEILINGS WITH PLENUMS LFS THAN 12 INC E T R S _H S O ST UCTURE ARE NOT RE UIRED TO O
<br />HAVE LATERAL FORCE BRACING. SOURCE: PORTLAND BUILDING DEPARTMENT
<br />® VERTICAL STRUTS MUST BE POSITIVELY ATTACHED TO THE SUSPENSION SYSTEMS AND THE
<br />STRUCTURE ABOVE. SOURCE: CISCA 3-4
<br />® THE VERTICAL STRUT MAY BE EMT CONDUIT, METAL STUDS OR A PROPRIETARY
<br />COMPRESSION POST (SEE FIGURE 3)
<br />® CEILINGS WITH INTERSTITIAL SPACES LESS THAN 12 INCHES TO FRAMING ARE NOT
<br />REQUIRED TO HAVE LATERAL FORCE BRACING
<br />WALL MOLDINGS (FIGURES 4a AND 4b)
<br />a WALL MOLDINGS (PERIMETER CLOSURE ANGLES) ARE REQUIRED TO HAVE .A
<br />HORIZONTAL FLANGE 2 INCHES WIDE. ONE END OF THE CEILING GRID SHALL BE
<br />ATTACHED TO THE WALL MOLDING, THE OTHER END SHALL HAVE A 3/4 INCH
<br />CLEARANCE FROM THE WALL AND FREE TO SLIDE. SOURCE: ASCE 7-05 SECTION
<br />1 3.5.G.2.2 b
<br />® WHERE SUBSTANTIATING DOCUMENTATION HAS BEEN PROVIDED TO THE LOCAL
<br />JURISDICTION, PERIMETER CLIPS MAY BE SUED TO SATISFY THE REQUIREMENTS
<br />FOR THE 2-INCH CLOSURE ANGLE. SOURCE: STATE OF OREGON, BUILDING CODES
<br />DIVISION
<br />® THE GRID SHALL BE ATTACHED AT TWO ADJACENT WALLS (POP RIVETS OR
<br />APPROVED METHOD). SOFFITS EXTENDING TO A POINT AT LEAST LEVEL WITH THE
<br />BOTTOMI PLANE OF THE GRID AND INDEPENDENTLY SUPPORTED AND LATERALLY
<br />BRACED TO THE STRUCTURE ABOVE ARE DEEMED TO BE EQUIVALENT TO WALLS.
<br />SOURCE: STATE OF OREGON, BUILDING CODES DIVISION
<br />SPREADER BARS (FIGURE 4b)
<br />SPREADER, (SPACER) BARS SHALL BE USED TO PREVENT THE ENDS OF THE MAIN
<br />Spreader bar or other suitable BEAMS AND CROSS TEES AT PERIMETER WALLS FROM SPREADING OPEN DURING A
<br />SEISMIC EVENT. PERIMETER WIRES SHALL NOT BE IN LIEU OF SPREADER BARS.
<br />system required to keep perimeter SOURCE: CISCA SEISMIC ZONES 3-4
<br />oents from spreading apart
<br />SPREADER BARS ARE NOT REQUIRED AT PERIMETERS WHERE RUNNERS :ARE
<br />M, ATTACHED DIRECTLY TO CLOSURE ANGLES.
<br />® WIRE TYING IS AN ACCEPTABLE ALTERNATIVE TO SPREADER BARS.
<br />® SPREADER BARS ARE NOT REQUIRED IF A 30 DEGREE INTERSECTING CROSS OR
<br />MAIN IS WITHIN 6 INCHES OF THE PERIMETER WALL.
<br />® WHERE SUBSTANTIATING DOCUMENTATION HAS BEEN PROVIDED TO THE LOCAL
<br />JURISDICTION, PERIMETER CLIPS MAY BE L15ED TO SATISFYTHE REQUIREMENTS
<br />FOR SPREADER BARS. SOURCE: STATE OF OREGON, BUILDING CODES DIVISION
<br />NO SCALE
<br />1.0 REFERENCE DOCUMENTS:
<br />1.1 ASTM STANDARDS
<br />1.1.1 ASTIvI C-754 INSTALLATION OF STEEL FRAMING TO RECEIVE SCREW ATTACHED GYPSUM PANELS
<br />1.1.2 ASTM C-840 APPLICATION AND FINISHING OF GYPSUM BOARD (SEC."15)
<br />1.1.3 .ASTM C-841 INSTALLATION OF INTERIOR LATHING AND FURRING (SFCS. 7.2 & 7.4)
<br />1.1.4 ASTMC-844 APPLICATION OF GYPSUM BASE TO RECEIVE GYPSUM VENEER PLASTER (SEC.15)
<br />1.2 RELATED STANDARDS:
<br />1.2.1 GA 216 APPLICATION AND FINISHING OF GYPSUM BOARD (SEC.12)
<br />1.2.2 GA 600 FIRE -RESISTANCE DESIGN MANUAL
<br />1.2.3 GWB-1 NORTHWEST WALL & CEILING BUREAU GUIDE SPECIFICATION FOR GYPSUM WALLBOARD.
<br />1.2.4 VP-1 NORTHWEST WALL &CEILING BUREAU GUIDE SPECIFICATION FOR VENEER PLASTER SYSTEMS.
<br />1.2.5 ICBO EVALUATION REPORT ER-4071
<br />1.2.6 MANUFACTURERS SPECIFICATIONS FOR THE APPLICATION OF CEMENT BOARD TO CEILINGS.
<br />2.0 MATERIALS:
<br />2.1 HANGER WIRE FOR CEILINGS WEIGHING 4 LBS PSF OR LESS SHALL BE #12 GA DIAMETER GALVANIZED, SOFT ANNEALED
<br />STEEL WIRE.
<br />2.2 HANGER WIRE FOR CEILINGS WEIGHING UP TO 10 LBS SHALL BE #9 GA GALVANIZED, SOFT ANNEALED STEEL WIRE,
<br />2.3 MAIN RUNNERS (CARRIERS) SHALL BE 1-1/2 X 16 GAUGE COLD ROLLED CHANNELS WEIGHING 475 LBS. PER THOUSAND
<br />LINEAL FEET. GALVANIZED OR CORROSION INHIBITING COATING FOR EXTERIOR OR HUMID CONDITIONS,
<br />2.4 FURRING SHALL BE 7/8'' X 25 GAUGE HAT SHAPED SECTIONS. GALVANIZED OR CORROSION INHIBITING COATING FOR
<br />EXTERIOR OR HUMID CONDITIONS.
<br />2.5 TIE WIRE SHALL BE 16 GAUGE AND/OR 18 GAUGE GALVANIZED, SOFT ANNEALED STEEL WIRE.
<br />3.0 INSTALLATION:
<br />3.1 WIRE HANGERS SHALL BE ATTACHED TO, OR PRE -INSTALLED IN STRUCTURE CAPABLE OF SUPPORTING THE CEILING
<br />WEIGHT, PLUS SAFETY MARGIN, WITHOUT DEFLECTION, THE HANGER ATTACHMENT SHALL DEVELOP FULL
<br />HANGER STRENGTH. HANGERS SHALL BE STRAIGHT AND WITHIN A RATION OF 1;6 OF PLUMB. AVOID HANGER
<br />SPLICES. HANGER WIRES SHALL NOT CONTACT MECHANICAL OR ELECTRICAL ITEMS ABOVE THE CEILING.
<br />HANGER WIPES SHALL BE INSTALLED AT 4' OC, AND SHALL BE LOCATED WITHIN 6" OF THE ENDS OF MAIN
<br />RUNNERS.
<br />3.2 MAIN RUNNERS SHALL BE SPACED AT 4' OC. MAIN RUNNERS SHALL BE LOCATED WITHIN 6" OF PARALLEL WALLS.
<br />ATTACH HANGER WIRES TOT HE MAIN RUNNERS WITH A SADDLE TIE THAT PREVENTS SETTLING, UPLIFT, OR
<br />TWISTING OF THE MAIN RUNNERS. SPLICE FURRING WITH A NESTED 12" LAP AND A DOUBLE WRAP WIRE TIE AT
<br />EACH END. MAIN RUNNERS SHALL BE INSTALLED TO WITHIN +/- 1/8" OF A FLAT PLANE.
<br />3.3. CROSS FURRING SHALL BE SADDLE TIED TO MAIN RUNNERS WITH #16 GAUGE WIRE OR TWO STRANDS OF #18 GAUGE
<br />WIRE OR APPROVED CLIPS. SPLICE FURRING WITH AN 8" NESTED LAP SCREWED OR WIRE TIED AT EACH END.
<br />THE REQUIRED FURRING SPACING IS 24" OC FOR 5/8" THICK GYPSUM PANELS AND 16'' OC FOR 1/2" THICK
<br />GYPSUM PANELS, FOR OTHER COMBINATIONS AND THICKNESS OF GYPSUM PANELS OR FOR CEMENT BOARD
<br />APPLICATIONS, SEE THE APPROPRIATE RELATED REFERENCE STANDARD OR MANUFACTURES SPECIFICATIONS.
<br />3A WHEN THE STRUCTURE FROM WHICH THE CEILING IS SUSPENDED IS CAPABLE OF MOVEMENT INDEPENDENT OF THE
<br />STRUCTURE SUPPORTING ABUTTING WALL AND PARTITIONS, THE CEILING FRAMING SHALL NOT BE ATTACHED
<br />TO OR IN CONTACT WITH THE WALLS. S L S. INSTALL GYPSUM OR CEMENT PA
<br />NELS TO THE CEILING WITH LONG
<br />DIMENSIONS PERPENDICULAR TO FURRING MEMBERS. PANEL ENDS SHALL OCCUR OVER FURRING MEMBERS
<br />UNLESS DICTATED BY OTHERWISE BY FIRE OR SOUND RATED SYSTEMS,
<br />3.5 ACCESSORIES: ACCESSORIES APPROPRIATE TO THE CEILING TYPE SHALL BE SUED, AND BE INSTALLED ACCORDING TO
<br />THE RELATED REFERENCE STANDARD.
<br />3.6 GENERAL INFORMATION: LARGE SUSPENDED CEILINGS, MORE THAN 50 LINEAL FT. IN ONE DIMENSION OR MORE THAN
<br />2500 SF, SHOULD NOT CONTACT ABUTTING WALLS OR COLUMNS. CONTROL JOINTS SHOULD BE USED TO
<br />MAINTAIN PANEL DIMENSIONS OF 50 LF. OR LESS, AND TO DIVIDE CEILING AREAS INTO MAXIMUMS OF 2500 SF.
<br />FRAMING SHOULD BE BROKEN OR SPLICED AT CONTROL JOINTS. FLEXIBLE SEALANT OR FOAM TAPE MAY BE
<br />INSTALLED BETWEEN THE CASING BEAD AND THE ABUTTING SURFACES. ADDITIONAL CARRIERS AND FURRING
<br />CHANNELS AND HANGER WIRES SHALL BE INSTALLED TO FRAME AROUND CEILING PENETRATIONS, SUCH AS
<br />LIGHT FIXTURES, ACCESS PANELS AND DUCT WORK FOR CEILING WEIGHING MORE THAN 7LB. PER SF, USE 20
<br />GA FURRING AT REDUCED SPACING.
<br />4.0 ALTERNATE CEILING FRAMING
<br />FOR LIMITED CEILING WIDTHS, ALTERNATE FRAMING CONSISTING OF FURRING CHANNEL OR METAL JOIST SECTIONS MAY BE
<br />INSTALLED AS A SIMPLE SPAN BETWEEN RUNNERS ATTACHED TO OPPOSITE WALLS. THIS SYSTEM MAY BE USED ON
<br />CEILING THAT DO NOT REQUIRE PENETRATIONS LARGE ENOUGH TO INTERRUPT THE FRAMING, AND DO NOT CARRY
<br />HEAVY FIXTURE LOADS,
<br />4.1 MATERIAL:
<br />4.1.1 RUNNERS: SHALL BE THE SAME SIZE AND GAUGE AS FRAMING MEMBERS, ANGEL RUNNER MAY BE USED TO
<br />SUPPORT HAT CHANNEL FRAMING.
<br />4.1.2 FRAMING: THE FOLLOWING TABLE LISTS THE MAXIMUM SINGLE SPAN FOR FRAMING MEMBERS INSTALLED AT 16" OR
<br />24" OC TO RECEIVE SINGLE LAYER CEILING PANELS,
<br />MEMBERS MAX. SINGLE SPAN
<br />7/8" X 25 GA HAT CHANNEL 4'-0"
<br />1-5/8" X 25 GA C SECTION 5'-0"
<br />2-1/2" X 25 GA C SECTION 6'-0"
<br />3-1/2" X 25 GA C SECTION 8'-01.
<br />4.2 INSTALLATION:
<br />4.2.1 ATTACH RUNNERS TO WALLS WITH 2 FASTENERS AT EACH WALL STUD
<br />4.2.2 CUT FRAMING MEMBERS TO WITHIN 1/4" OF CEILING WIDTH
<br />4.2.3. ATTACH FRAMING TO RUNNERS WITH SCREWS AT BOTH TOP AND BOTTOM FLANGES
<br />5.0 FINISHING
<br />5.1 APPLICATION OF PANELS AND FINISHING SHALL BE IN ACCORDANCE WITH THE APPROPRIATE RELATED SPECIFICATION.
<br />i
<br />O
<br />0 �C)
<br />O cn
<br />00
<br />TYPICAL HANGERLE
<br />SPACING P-G' O.C. 1- 112" CHANNEL F-0" pNSEEMV
<br />MAX. O.C. MAX.
<br />u 0
<br />XO
<br />1i2° or s/s"
<br />GYPSUM BASE E O
<br />GYPSUM PANELS
<br />I
<br />REGULAR ORrFOILBACK MAX.
<br />SPACING 16" OR 0}'
<br />24"O.c. O
<br />METAL FURRING --2
<br />CHANNEL CLIP O
<br />.., MAX SPACING 24" < O
<br />o.0
<br />I
<br />HANGER (SUSPENSION) WIRES (FIGURES 5a AND 5b)
<br />PLUMB 1/6
<br />0 HANGER AND PERIMETER WIRES MUST BE PLUMB WITHIN I IN G UNLESS (FIGURE
<br />1 i
<br />5a) COUNTER SLOPING WIRES ARE PROVIDED (FIGURE 5b). SOURCE: ASTM C GSG
<br />V
<br />SECTION 2. 1 .4
<br />MAXIMUM
<br />8
<br />® HANGER WIRES SHALL BE 1 2 GAGE AND SPACED 4 FEET ON CENTER OR O GAGE
<br />SPACED 5 FEET ON CENTER. SOURCE: ASTM C G3G
<br />® ANY CONNECTION DEVICE AT THE SUPPORTING CONSTRUCTION SHALL BE CAPABLE
<br />e -O °®
<br />OF CARRYING NOT LESS THAN 100 POUNDS. SOURCE: CISCA ZONES 3-4
<br />0 POWDER DRIVEN SHOT -IN -ANCHORS ARE AN APPROVED METHOD OF ATTACHMENT
<br />FOR HANGER WIRES. SOURCE: STATE OF OREGON, BUILDING CODES DIVISION
<br />FIGURE 5a
<br />0 TERMINAL ENDS OF EACH MAIN BEAM AND CROSS TEE MUST BE SUPPORTED
<br />WITHIN 8 INCHES OF EACH WALL WITH A PERIMETER WIRE (SEE FIGURE 4 $ 5b).
<br />3" (76mm)
<br />SOURCE: CISCA ZONES 3-4
<br />0 WIRES SHALL NOT ATTACH TO OR BEND AROUND INTERFERING MATERIAL OR
<br />EQUIPMENT. A TRAPEZE OR EQUIVALENT DEVICE SHALL BE USED WHERE
<br />OBSTRUCTIONS PRECLUDE DIRECT SUSPENSION, TRAPEZE SUSPENSIONS SHALL
<br />BE A MINIMUM OF BACK-TO-BACK 1-1/4" COLD -ROLLED CHANNELS FOR SPANS
<br />MINIMUM 45' MINIMUM 450
<br />EXCEEDING 46 INCHES. SOURCE: CISCA ZONES 3-4
<br />ANGLE
<br />ANGLE
<br />ELECTRICAL FIXTURES
<br />w LIGHT FIXTURES WEIGHING LESS THAN 10 POUNDS SHALL HAVE ONE 12 GAGE
<br />HANG WIRE CONNECTED FROM THE FIXTURE TO THE STRUCTURE ABOVE. THIS
<br />FIGURE 5b • COUNTER SLOPING
<br />WIRE MAY BE SLACK. SOURCE: CISCA SEISMIC ZONES 3-4
<br />6 LIGHT FIXTURES WEIGHING MORE THAN 10 POUNDS AND LESS THAN 5G LBS. SI-IAI_L
<br />HAVE TWO 12 GAGE WIRES ATTACHED AT OPPOSING CORNERS OF THE LIGHT
<br />VERTICAL HANGER WIRE ATTACHMENT
<br />FIXTURE TO THE STRUCTURE ABOVE. THESE WIRES MAY BE SLACK. SOURCE:
<br />CISCA SEISMIC ZONES 3-4
<br />® LIGHT FIXTURES WEIGHING MORE THAN 5G LBS. SHALL BE SUPPORTED BY DIRECTLY
<br />SHOT -IN -ANCHOR
<br />gl
<br />3/4"
<br />FROM THE STRUCTURE ABOVE. THESE WIRES MUST BE TAUT. SOURCE: CISCA
<br />SEISMIC ZONES 3-4
<br />STRUCTURAL CONCRETE
<br />MA
<br />XTURES PENDANT MOUNT D rh
<br />E SHALL BE DIRECTLY SUPPORTED FROM THE
<br />CEILING CLIP
<br />STRUCTURE ABOVE USING A 9 GAGE WIRE OR AN APPROVED ALTERNATE SUPPORT
<br />WITHOUT USING THE CEILING SUSPENSION SYSTEM FOR DIRECT SUPPORT.
<br />3 TURNS
<br />SOURCE: CISCA SEISMIC ZONES 3-4
<br />VERTICAL HANGER WIRE -
<br />P TANDEM FIXTURES MAY UTILIZE COMMON WIRES.
<br />FIGURE 6a
<br />MECHANICAL SERVICES
<br />TERMINALS OR SERVICES WEIGHING 20 LBS. BUT NOT MORE THAN 56 LBS. MUST
<br />SPLAYED SEISMIC BRACING WIRE ATTACHMENT
<br />HAVE TWO 12 GAGE WIRES CONNECTING THEM TO THE CEILING SYSTEM HANGERS
<br />OR THE STRUCTURE ABOVE. THESE WIRES MAY DE SLACK. SOURCE: CISCA DRILL -IN EXPANSION
<br />SEISMIC ZONES 3-4 ANCHOR s7T7
<br />1g@d
<br />0 TERMINALS OR SERVICES WEIGHING MORE THAN 5G LBS. MUST BE INDEPENDENTLY
<br />SUPPORTED DIRECTLY FROM THE STRUCTURE ABOVE. THESE WIRES MUST BE STRUCTURAL CONCRETE 45'
<br />TAUT. SOURCE; CISCA SEISMIC ZONES 3-4 STEEL STRAP 1" WIDE x 2"
<br />LONG x "12 GAGE MINIMUM
<br />SEISMIC SEPARATION JOINTS (FIGURE 7) 3 TURNS-
<br />SPLAYED SEISMIC BRACING WIRE
<br />® FOR CEILING AREAS EXCEEDING 2,500 SQUARE FEET, A SEISMIC SEPARATION
<br />JOINT OR FULL HEIGHT WALL PARTITION THAT BREAKS THE CEILING SHALL BE FIGURE 6b
<br />PROVIDED UNLESS ANALYSES ARE PERFORMED OF THE CEILINGS BRACING SYSTEM,
<br />CLOSURE ANGLES AND PENETRATIONS TO PROVIDE SUFFICIENT CLEARANCE.
<br />SOURCE: ASCE 7-05 SECTION 13.5.G.2.2 d Ak
<br />THE LAYOUT AND LOCATION OF THE SEISMIC SEPARATION JOINT SHALL BE PER THE
<br />DESIGNER OF RECORD AND NOTED ON THE PLANS. IF A SEISMIC SEPARATION
<br />JOINT IS REQUIRED BY THE DESIGNER, THE DESIGNER MAY USE THE GENERIC JOINT LQ
<br />DETAILED IN THIS DOCUMENT OR A PROPRIETARY JOINT. THE AMOUNT OF FREE
<br />MOVEMENT (GAP DESIGN) SHALL BE A MINIMUM OF 314 INCH, SOURCE: STATE OF
<br />OREGON, BUILDING CODES DIVISION.
<br />® IN LIEU OF SEISMIC SEPARATION JOINTS, THE CEILING MAY BE DIVIDED INTO AREAS
<br />LESS THAN 2500 SQUARE FEET BY THE USE OF PARTITIONS OR SOFFITS AS
<br />FOLLOWS: PARTITIONS SHALL EXTEND A MINIMIUMI OF G INCHES ABOVE THE LEVEL
<br />OF THE PLANE OF THE GRID AND SHALL BE INDEPENDENTLY BRACED TO THE
<br />STRUCTURE ABOVE. SOFFITS SHALL EXTEND TO A POINT AT LEAST LEVEL WITH THE
<br />BOTTOM PLANE OF THE GRID AND SHALL BE INDEPENDENTLY SUPPORTED AND
<br />LATERALLY BRACED TO THE STRUCTURE ABOVE. SOURCE: STATE OF OREGON
<br />BUILDING CODES DIVISION FLANGE
<br />3/4" _ POP
<br />® OTHER THAN PARTITIONS AND SOFFITS, SEISMIC JOINTS MAY NOT BE USED AS MINIMUM RIVET
<br />PART OF A FIRE RATED CEILING ASSEM 51-Y UNLESS SUBSTANTIATING FIGURE 7
<br />DOCUMENTATION IS PROVIDED. SOURCE: STATE OF OREGON BUILDING CODES
<br />DIVISION,
<br />1
<br />FOR CEILING WITHOUT RIGID BRACING, SPRINKLER HEAD PENETRATIONS SHALL HAVE A 2
<br />INCH OVERSIZE RING, SLEEVE OR ADAPTER THROUGH THE CEILING TILE TO ALLOW FREE
<br />MOVEMENT OF AT LEAST 1 INCH IN ALL HORIZONTAL DIRECTIONS. FLEXIBLE HEAD DESIGN
<br />THAT CAN ACCOMMODATE 1 INCH FREE MOVEMENT SHALL BE PERMITTED AS AN
<br />ALTERNATE. SOURCE: ASCE 7-05 13.5.6.2.2 e
<br />CROSS TEES
<br />LATERAL FORCE BRACING
<br />PERIMETER WIRES
<br />THE CROSS MEMBER THAT
<br />THE BRACING METHOD USED
<br />HANGER WIRES PLACED
<br />INTERLOCK WITH THE MAIN
<br />TO PREVENT CEILING UPLIFT
<br />WITHIN EIGHT INCHES OF THE
<br />BEAMS, ALSO KNOWN AS
<br />OR RESTRICT LATERAL
<br />SURROUNDING WALLS.
<br />CROSS RUNNERS OR CROSS
<br />MOVEMENT DURING A
<br />T-BARS.
<br />SEISMIC EVENT. LATERAL
<br />PLENUM
<br />FORCE BRACING CONSISTS OF
<br />THE SPACE ABOVE A
<br />DIFFUSER
<br />VERTICAL STRUTS AND SPLAY
<br />SUSPENDED CEILING.
<br />A CIRCULAR OR
<br />WIRES.
<br />RECTANGULAR METALGRILI_
<br />SLACK WIRE
<br />USED FOR THE PASSAGE OF
<br />MAIN BEAM
<br />A 12 GAGE WIRE THAT IS NOT
<br />AIR FROM A DUCTED SYSTEM.
<br />THE PRIMARY SUSPENSION
<br />TIGHT OR TAUT.
<br />MEMBER SUPPORTED BY
<br />ESSENTIAL SERVICE BUILDINGS
<br />HANGER WIRES, ALSO KNOWN
<br />SPREADER OR SPACER BAR
<br />ANY BUILDINGS DESIGNED TO
<br />AS THE MAIN RUNNER,
<br />A BAR WITH NOTCHES TO
<br />BE USED BY PUBLIC AGENCIES
<br />CARRYING TEE, CARRYING
<br />PREVENT THE SUSPENSION
<br />AS A FIRE STATION, POLICE
<br />RUNNER OR MAINS,
<br />SYSTEM FROM SEPARATING,
<br />STATION, EMERGENCY
<br />ALSO CALLED A STABILIZER
<br />OPERATIONS CENTER, STATE
<br />MOLDING/CLOSURE ANGLE
<br />BAR.
<br />PATROL OFFICE, a-IERIFFS
<br />A LIGHT GAUGE METAL ANGLE
<br />OFFICE, OR EMERGENCY
<br />OR CHANNEL FASTENED TO
<br />SPLAY WIRES
<br />COMMUNICATION DISPATCH
<br />THE PERIMETER WALL OR
<br />WIRES INSTALLED AT AN
<br />CENTER,
<br />PARTITION TO SUPPORT THE
<br />ANGLE RATHER THAN
<br />PERIMETER ENDS OF AN
<br />PERPENDICULAR TO THE GRID.
<br />GRID
<br />ACOUSTICAL CEILING GRID
<br />THE MAIN BEAMS AND CROSS
<br />VERTICAL STRUTS
<br />TEES OF THE SUSPENSION
<br />PERIMETER CLIPS
<br />THE RIGID VERTICAL MEMBER
<br />SYSTEM.
<br />PROPRIETARY ANGLE BRACKET
<br />USED IN LATERAL FORCE
<br />ATTACHED DIRECTLY TOT EH
<br />BRACING OF THE SUSPENSION
<br />HANGER WIRE
<br />WALL MOLDING/CLOSURE
<br />SYSTEM. ALSO KNOWN AS A
<br />On 12 GAC,E SOFT
<br />ANG E NHIC C L HALLOW :OR
<br />o
<br />CUM. RESSION POyIS
<br />ANNEALED WIRE USED AS
<br />3/4" MOVEMENT IN THE
<br />SEISMIC PODS,SF.ISMIC
<br />PRIMARY SUPPORT, OR THE
<br />EVENT F EN 0 SEISMIC ACTIVITY
<br />STRUTS UTS. COMMON
<br />GRID SYSTEM. ALSO CALLED
<br />AND INTERLOCKS PROPERLY
<br />MATERIALS ARE ELECTRICAL
<br />SUSPENSION WIRES.
<br />WITH ENDS OF GRID SYSTEM.
<br />CONDUIT (EMT), METAL
<br />STUDS OR PROPRIETARY
<br />PRODUCTS,
<br />UPGRADING OF EXISTING CEILINGS
<br />m CEILINGS WITHOUT SEISMIC BRACING: WHERE EXISTING CEILINGS ARE WITHOUT
<br />SEISMIC BRACING, THE CEILING SYSTEM SHALL BE BROUGHT INTO SUBSTANTIAL
<br />COMPLIANCE WITH CURRENT CODE REQUIREMENTS WHEN 509y. OR MORE OF THE
<br />CEILING TILE IS ALTERED, REPAIRED OR REPLACED AS PART OF A GENERAL SPACE
<br />ALTERATION, OR IF ALL OF THE CEILING SYSTEM IS REMOVED.
<br />-SUBSTANTIAL COMPLIANCE MEANS INSTALLATION OF THE FOLLOWING
<br />ITEMS WHERE REQUIRED IN NEW CONSTRUCTION:
<br />-LATERAL FORCE BRACING (SPLAYED WIRES)
<br />-COMPRESSION STRUTS
<br />-SLACK WIRES ON ALL LIGHT FIXTURES AND AIR TERMINALS
<br />-THIS REQUIREMENT DOES NOT TRIGGER THE NEED FOR:
<br />-2 INCH CLOSURE ANGLE AS SPECIFIED IN SECTION II
<br />-SEISMIC SEPARATION JOINTS
<br />-1 INCH MOVEMENT IN ALL DIRECTIONS AROUND SPRINKLER PENDANTS
<br />-THESE UPGRADES ARE NOT REQUIRED WHEN:
<br />-REMOVING PORTIONS OF TILES OR PANELS AND/OR GRID TO ALTER
<br />DUCTWORK, SPRINKLER PIPE, ETC.
<br />-PORTIONS OF A CEILING ARE REMOVED ONLY TO FACILITATE THE
<br />INSTALLATION OF SPRINKLER PIPING
<br />® CEILINGS WITHOUT COMPRESSION STRUTS: WHERE EXISTING CEILINGS HAVE SEISMIC
<br />BRACING BUT DO NOT HAVE COMPRESSION STRUTS AT THE CENTER OF THE
<br />SPLAYED WIRES, THE ADDITION OF COMPRESSION STRUTS WILL ONLY BE REQUIRED
<br />WHEN AND WHERE THE GRID IS REPLACED, ALTERED, RAISED OR LOWERED.
<br />Revisions:
<br />Mark Date
<br />,.
<br />T
<br />Architect ®f Record
<br />I
<br />j ( j j� �'
<br />\i/
<br />I
<br />C0RTLANO
<br />O R G A N
<br />ARCHITECT
<br />711 N. FIELDER RD.
<br />ARLINGTON, TX 76012
<br />PH: (817) 635-5696
<br />FAX: (817) 635-5699
<br />0"M Tu. wmos,
<br />Seal
<br />PHBT
<br />r ,
<br />�i
<br />0TLIIORGAN
<br />STATE
<br />Architect Job No.:
<br />33N2022
<br />Nextore Store Design Revision No.:
<br />nua=
<br />Nextore Project
<br />Number 86841
<br />Brand Design Type:
<br />PV 3.0
<br />ISSUED FOR:
<br />M CONSTRUCTION
<br />Title
<br />Sheet
<br />A403
<br />NO SCALE
<br />
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