HomeMy WebLinkAbout09-5426-Suspended-Wood-Ceilings-(Part-of-FSB-09-0003)_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021
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SUSPENDED WOOD CEILINGS
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SECTION 09 5426
SUSPENDED WOOD CEILINGS
(Part of Filed Sub-Bid Section 09 0003 - Acoustical Tile)
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Work Included: Provide labor, materials and equipment necessary to complete the work of this
Section, including but not limited to the following:
1. Solid-wood, linear-plank ceilings (Ceiling Type 3.4).
2. Wood-veneer, open-cell panel ceilings (Ceiling Type 3.3).
3. Solid-wood, grille-panel ceilings and walls (Ceiling Types 3.7 and 3.8).
4. Other items indicated on Drawings as Work of this Section.
B. Related Requirements:
1. Section 01 8113 “Sustainable Design Requirements” for general requirements and
procedures for compliance with certain USGBC LEED prerequisites and credits.
2. Section 09 5113 "Acoustical Panel Ceilings" for ceilings consisting of mineral-base and
glass-fiber-base acoustical panels and exposed suspension systems.
3. Section 09 5133 “Acoustical Metal Pan Ceilings” for wood-veneer-faced metal pans and
suspension systems for interior ceilings.
4. Section 09 5163 “Seamless Acoustical Ceiling Systems" for seamless acoustical ceiling
system including concealed grid suspension system.
5. Section 09 5425 “Linear Plastic Ceilings” for linear plastic (PVC) ceiling strips and
suspension systems for exterior ceilings.
6. Section 09 5456 “Formed Felt Fabric Ceiling Panels” for shop-fabricated, felt fiber ceiling
panels (blades).
7. Division 21 Sections "Fire Protection" for ceiling mounted sprinkler heads.
8. Division 23 Sections "Heating, Ventilating and Air-Conditioning" for ceiling mounted
registers and grilles.
9. Division 26 Sections "Electrical" for ceiling mounted light fixtures.
1.3 DEFINITIONS
A. NRC: Noise Reduction Coefficient.
1.4 COORDINATION
A. Coordinate layout and installation of wood ceilings and suspension systems with other
construction that penetrates ceilings or is supported by them, including light fixtures, HVAC
equipment, fire-suppression system, and partition assemblies.
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1.5 PREINSTALLATION MEETINGS
A. Preinstallation Conference: Conduct conference at Project site.
1.6 ACTION SUBMITTALS
A. Make Submittals in accordance with Section 01 3300 “Submittal Procedures.”
B. Product Data: For each type of product.
C. Sustainable Design Submittals:
1. Environmental Product Declaration (EPD): Provide manufacturers’ product
documentation for each product having an Environmental Product Declaration (EPD).
a. Documentation should confirm EPD conforms with ISO 14205 EN 15804 or ISO
21930.
b. EPD shall have at least Cradle to Gate scope.
c. Complete "LEED Materials Documentation Sheet" with MRc2 information for each
product having an EPD.
2. Certified Wood: Document FSC Certification for all wood products that contribute to
credit achievement by providing the following:
a. Itemized vendor invoices for FSC-certified products.
b. Chain-of-Custody (COC) certificates. Every entity that processes or trades FSC-
certified material before it is shipped to the project site must have FSC CoC
certification. On-site installers of FSC-certified products must have CoC
certification only if they modify the products off the project site.
c. Complete "LEED Materials Documentation Sheet" with MRc3 Option 2 information
for wood products installed in the building.
3. Adhesives And Sealants: Provide manufacturers' or third-party certification of testing to
and compliance with the California Department of Public Health (CDPH) Standard
method v1.2-2017, that includes the following information:
a. The exposure scenario used to determine compliance.
b. The range of total VOCs after 14 days, measured as specified in the CDPH
Standard Method v1.2:
1) 0.5 mg/m^3 or less;
2) Between 0.5 and 5.0 mg/m^3; or
3) 5.0 mg/m^3 or more.
c. Laboratory accreditation under ISO/IEC 17025.
d. Claims of compliance for wet-applied products must state the amount applied in
mass per surface area.
e. Provide MSDS or other manufacturer documentation with disclosure of VOC
content for all wet-applied products.
f. Complete "LEED Materials Documentation Sheet" with IEQc2 information for
adhesives/sealants installed within the waterproofing membrane.
4. Composite Wood: Provide manufacturers’ product data confirming that the composite
wood products in the building have low formaldehyde emissions that meet the California
Air Resources Board ATCM for formaldehyde requirements for ultra-low-emitting
formaldehyde (ULEF) resins or no added formaldehyde resins.
a. Complete "LEED Materials Documentation Sheet" with IEQc2 information for
composite wood products installed within the waterproofing membrane.
5. Ceilings: Provide manufacturers' or third-party certification of testing to and compliance
with the California Department of Public Health (CDPH) Standard method v1.2-2017 that
includes the following information:
a. The exposure scenario used to determine compliance.
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b. The range of total VOCs after 14 days, measured as specified in the CDPH
Standard Method v1.2:
1) 0.5 mg/m^3 or less;
2) Between 0.5 and 5.0 mg/m^3; or
3) 5.0 mg/m^3 or more.
c. Laboratory accreditation under ISO/IEC 17025.
d. Claims of compliance for wet-applied products must state the amount applied in
mass per surface area.
e. Complete "LEED Materials Documentation Sheet" with IEQc2 information for
ceilings, walls, thermal and acoustical insulation products installed within the
waterproofing membrane.
D. Shop Drawings: For suspended wood ceilings.
1. Include reflected ceiling plans, sections, and details, drawn to scale, showing the
following:
a. Wood ceiling patterns and joints.
b. Ceiling suspension members.
c. Method of attaching hangers to building structure and locations of cast-in-place
anchors, clips, and other ceiling attachment devices whose installation is specified
in other Sections.
d. Ceiling-mounted items including, but not limited to, light fixtures, diffusers, grilles,
speakers, sprinklers, and access panels.
e. Ceiling perimeter and penetrations through ceiling; trim and moldings.
E. Samples for Verification: For the following products:
1. Wood Ceilings: 12-inch- long by 12-inch- wide or full-width Samples of each type, color,
and finish.
2. Suspension-System Members: 12-inch- long Sample of each type.
3. Exposed Molding and Trim: 12-inch- long Samples of each type, color, and finish.
4. Veneer Edge Banding: Applied to a cut end of a wood-ceiling Sample for each type,
color, and finish.
5. Filler Strips: 12-inch- long Samples of each type, color, and finish.
F. Delegated Design Submittal: For design of seismic restraints and attachment devices.
1.7 INFORMATIONAL SUBMITTALS
A. Product Test Reports: For each suspended wood ceiling, for tests performed by a qualified
testing agency.
B. Evaluation Reports: For suspended-wood-ceiling framing systems.
1.8 CLOSEOUT SUBMITTALS
A. Maintenance Data: For finishes to include in maintenance manuals.
1.9 MAINTENANCE MATERIAL SUBMITTALS
A. Furnish extra materials that match products installed and that are packaged with protective
covering for storage and identified with labels describing contents.
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1. Suspended-Wood-Ceiling Components: Quantity of each wood-ceiling unit, suspension-
system component, accessory, and exposed molding and trim equal to 2 percent of
quantity installed.
1.10 QUALITY ASSURANCE
A. Mockups: Build mockups to verify selections made under Sample submittals and to
demonstrate aesthetic effects and to set quality standards for materials and execution.
1. Build mockup of each type of suspended wood ceiling as shown on Drawings.
a. Demonstrate treatment of exposed field cuts.
2. Approval of mockups does not constitute approval of deviations from the Contract
Documents contained in mockups unless Architect specifically approves such deviations
in writing.
3. Subject to compliance with requirements, approved mockups may become part of the
completed Work if undisturbed at time of Substantial Completion.
1.11 DELIVERY, STORAGE, AND HANDLING
A. Deliver ceiling components and accessories to Project site in original, unopened packages and
store them in a fully enclosed, conditioned space where they are protected against damage
from moisture, humidity, temperature extremes, direct sunlight, surface contamination, and
other causes.
1. Store materials flat and level, raised from the floor.
B. Handle ceiling components and accessories in a manner that prevents damage.
1.12 PROJECT CONDITIONS
A. Environmental Limitations: Do not install interior ceilings until spaces are enclosed and
weathertight, wet-work in spaces is complete and dry, work above ceilings is complete, and
HVAC system is operating and maintaining temperature and relative humidity at levels planned
for building occupants during the remainder of the construction period.
1. Store and acclimatize wood products in the spaces where they will be installed for a
minimum of 72 hours immediately before ceiling installation.
PART 2 - PRODUCTS
2.1 LEED REQUIREMENTS
A. Environmental Product Declaration (EPD): Provide products with Third Party Environmental
Product Declaration (EPD) whenever available.
B. Certified Wood: Wood products that are not reused, salvaged, or recycled must be certified to
the standards of the Forest Stewardship Council.
1. Provide products manufactured and extracted within 100 miles of the project site
whenever possible.
C. Adhesives And Sealants: For field applications that are inside the weatherproofing membrane:
Adhesives/sealants must be tested and determined compliant in accordance with California
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Department of Public Health (CDPH) Standard Method v1.2-2017, using the applicable
exposure scenario. The default scenario is the private office scenario.
1. All adhesives/sealants wet-applied on site must meet the applicable chemical content
requirements of SCAQMD Rule 1168, October 6, 2017, Adhesive and Sealant
Applications, as analyzed by the methods specified in Rule 1168. The provisions of
SCAQMD Rule 1168 do not apply to adhesives and sealants subject to state or federal
consumer product VOC regulations.
D. Composite Wood: Composite wood, as defined by the California Air Resources Board, Airborne
Toxic Measure to Reduce Formaldehyde Emissions from Composite Wood Products
Regulation, must be documented to have low formaldehyde emissions that meet the California
Air Resources Board ATCM for formaldehyde requirements for ultra-low-emitting formaldehyde
(ULEF) resins or no added formaldehyde resins.
E. Ceilings: Ceiling, must be tested and determined compliant in accordance with California
Department of Public Health (CDPH) Standard Method v1.2-2017, using the applicable
exposure scenario. The default scenario if the private office scenario.
2.2 PERFORMANCE REQUIREMENTS
A. Delegated Design: Engage a qualified professional engineer, as defined in Section 01 4000
"Quality Requirements" to design seismic restraints and attachment devices.
B. Seismic Criteria: Provide suspended wood ceilings designed and installed to withstand the
effects of earthquake motions in accordance with ASCE/SEI 7 and requirements of authorities
having jurisdiction.
2.3 SOLID-WOOD, LINEAR-PLANK CEILING (CEILING TYPE 3.4)
A. Linear Ceiling Planks: Manufacturer's standard kiln-dried, solid-wood planks free of knots;
without finger joints, cracks, checks, or warp, and with square-cut ends.
1. Basis-of-Design Product: Subject to compliance with requirements, provide Linear Wood
Strip Ceiling System, Linear Open Style, by Rulon Company or a comparable product by
one of the following or equal:
a. Architectural Surfaces, Inc., Chaska, MN.
b. 5th Wall Designs, LLC, Blaine, MN.
c. 9Wood, Springfield, OR.
B. Linear Open Style: Provided in random lengths with tongue and groove ends or in fixed lengths.
Standard lengths are 3 feet to 10 feet.
1. Module Size: 4-1/2 inch module, having wood strips 3/4 inch thick by 3-3/4 inch wide,
and a 3/4 inch reveal
2. Provide a factory-installed fiberfelt spacer between the wood strips. Provide fiberfelt
spacer in a standard black color.
3. Trim and Border Treatment: Provide end caps or junction trims as indicated.
4. Wood Species: Ash.
5. Finish: Custom stain to match Architect’s color sample.
a. Surface-Burning Characteristics: Provide manufacturer's standard intumescent
finish system with the following characteristics when tested in accordance with
ASTM E84:
1) Flame-Spread Index: 25 or less.
2) Smoke-Developed Index: 450 or less.
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C. Linear-Ceiling-Plank Accessories: Linear-ceiling-plank manufacturer's accessories required to
provide a complete installation of ceiling in accordance with manufacturer's written installation
instructions.
1. Cliprail: Spring-steel attachment clips with phosphate pre-treatment and corrosion-
resistant coating, attached at pre-spaced intervals to heavy-duty grid.
D. Carriers And Components: Linear carriers shall be commercial quality hot dipped galvanized
steel as per ASTM A 653. Provide double-web steel construction carriers with concealed flange
design. Exposed surfaces chemically cleansed, capping prefinished galvanized steel in baked
polyester paint. Linear carriers shall have rotary stitching.
1. Structural Classification: ASTM C 635, Heavy Duty.
2. Color: Black.
3. Carriers: Manufacturer's standard carriers.
4. Flexible Radial Carriers: Manufacturer's standard radial carriers.
5. Expansion Carriers: Manufacturer's standard carriers allowing for irregularities or other
unusual space conditions.
6. Carrier Splices: Same metal, profile, and finish as indicated for carriers.
7. Clips: Integral, factory-applied, spring steel clips on linear carriers in sufficient number to
receive 8 foot linear wood planks.
E. Attachment Devices: Size for five times the design load indicated in ASTM C 635, Table 1,
Direct Hung.
F. Wire Hangers, Braces, and Ties: Provide wire complying with the following requirements:
1. Zinc-Coated, Carbon-Steel Wire: ASTM A 641/A 641M, Class 1 zinc coating, soft
temper.
2. Size: Select wire diameter so its stress at 3 times the hanger design load indicated in
ASTM C 635, Table 1, Direct Hung will be less than yield stress of wire, but provide not
less than 0.135-inch- diameter wire.
G. Accessories, Edge Moldings and Trim:
1. Access Panels: For access at locations indicated, provide door hinge assembly, retainer
clip, and retainer bar, assembled with ceiling panels and carrier sections into access
doors of required size, permitting upward or downward opening.
H. Sound-Absorbent Pads: Provide width and length to completely fill between carriers, joined at
center of panel, with surface-burning characteristics for flame-spread index of 25 or less and
smoke-developed index of 50 or less, as determined by testing per ASTM E 84, and to comply
with the following requirements:
1. Plastic Sheet-Wrapped Mineral-Fiber Insulation: Pads consisting of nonrigid, PVC plastic
sheet encapsulating unfaced mineral-fiber insulation complying with ASTM C 553, Type I,
II, or III, and as follows:
a. Mineral-Fiber Type and Thickness: Glass fiber; 1-1/2 inches.
b. Mineral-Fiber Density: 1 lb/cu. ft.
c. Plastic Sheet Thickness and Color: Not less than 0.003 inch; flat black.
2.4 WOOD-VENEER, OPEN-CELL PANEL CEILING (CEILING TYPE 3.3)
A. Continuous Cubes: Manufacturer's standard open-cell panels fabricated from wood veneer
adhered to backs and exposed surfaces of manufacturer's standard composite-wood cores;
designed for lay-in installation in ceiling suspension grid.
1. Basis-of-Design Product: Subject to compliance with requirements, provide Rulon
Continuous Cubes by Rulon International or a comparable product by one of the following
or equal:
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a. 9Wood, Springfield, OR.
b. Armstrong World Industries, Inc.
2. Wood Species: Ash.
3. Depth: 10 inches.
4. Thickness: 3/4 inch.
5. Cell Pattern: Custom as indicated on Drawings.
6. Panel Edges: Manufacturer's standard for flush installation.
7. Finish: Custom stain to match Architect’s color sample.
a. Surface-Burning Characteristics: Provide manufacturer's standard intumescent
finish system with the following characteristics when tested in accordance with
ASTM E84:
1) Flame-Spread Index: 25 or less.
2) Smoke-Developed Index: 450 or less.
B. Custom stain to match Architect’s color sample
C. Grid Suspension System: ASTM C635/C635M; recommended in writing by ceiling and
suspension-system manufacturers for applications indicated; main- and cross-runner system
complete with suspension-system components required to support ceiling units and other
ceiling-supported construction.
1. Material: ASTM A653/A653M, hot-dip galvanized, cold-rolled sheet steel, G60 coating
designation.
2. Structural Classification: Heavy-duty system.
3. Face Width: 15/16 inch.
4. Finish: Flat black.
2.5 SOLID-WOOD, GRILLE-PANEL CEILING (CEILING TYPES 3.7 AND 3.8).
A. Wood Grille Panels: Manufacturer's standard kiln-dried, solid-wood rails free of knots and
without finger joints, cracks, checks, and warp secured to wood panel backing that maintains
equal rail spacing and prevents rail twisting and warping.
1. Basis-of-Design Product: Subject to compliance with requirements, provide Panel Grilles
by Rulon Company, St. Augustine, FL or a comparable product by one of the following or
equal:
a. Decoustics Limited; a CertainTeed Ceilings company.
b. 9Wood, Springfield, OR.
B. Drawing Designation Type 3.7:
1. Basis-of-Design Product: Woodworks Grille by Armstrong World Industries, Inc. or equal.
2. Wood Species: Ash.
3. Finish: Custom stain to match Architect’s color sample.
a. Surface-Burning Characteristics: Provide manufacturer's standard intumescent
finish system with the following characteristics when tested in accordance with
ASTM E84:
1) Flame-Spread Index: 25 or less.
2) Smoke-Developed Index: 450 or less.
4. Profiles:
a. Panel Size: As indicated on the Drawings.
b. Number of Blades per foot: 3.
c. Blade Thickness: ¾ inch.
d. Depth of the Blades: 3-3/4 inches.
C. Drawing Designation Type 3.8:
1. Basis-of-Design Product: Rulon Company; PG 4-21-60 or equal.
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2. Wood Species: Ash.
3. Finish: Custom stain to match Architect’s color sample.
a. Surface-Burning Characteristics: Provide manufacturer's standard intumescent
finish system with the following characteristics when tested in accordance with
ASTM E84:
1) Flame-Spread Index: 25 or less.
2) Smoke-Developed Index: 450 or less.
4. Profiles:
a. Panel Size: As indicated on the Drawings.
b. Number of Blades per foot: 4.
c. Blade Thickness: 1-5/16 inch.
d. Depth of the Blades: 2-5/16 and 3-3/4 inches, alternating every other blade.
D. Panel Design Description: Doweled and wood-backed panel grilles.
1. Provide grilles consisting of individual wood strips assembled in 12 inch widths in lengths
up to 10 feet. Drill wood strips 12 inches on center, beginning 5-1/2 inch from each end.
Attached woodbackers to the back of grilles 12 inches on center, beginning 5-1/2 inch
from each end. Position dowels and woodbackers perpendicular to the wood strips.
2. Dowels And Woodbackers Finish: Black.
E. Trim and Border Treatment: Provide end caps or junction trims as indicated on the Drawings in
the same species and finish as the panel grille.
F. Accessorles:
1. Woodbacker Clips: Provide spring-steel clips with phosphate pre-treatment and
corrosion-resistant coating, attached by fitting around the woodbacker and attaching to
the grid system.
2.6 SUSPENSION-SYSTEM HANGERS, BRACES, AND TIES
A. Attachment Devices: Size for 5 times the design load indicated in ASTM C635/C635M, Table 1,
Direct Hung, unless otherwise indicated.
B. Wire Hangers, Braces, and Ties: Provide wire complying with the following requirements:
1. Zinc-Coated, Carbon-Steel Wire: ASTM A641/A641M, Class 1 zinc coating, soft temper.
2. Size: Select wire diameter so its stress at 3 times the hanger design load indicated in
ASTM C635/C635M, Table 1, Direct Hung is less than yield stress of wire, but provide
not less than 0.106-inch-diameter wire.
C. Hanger Rods: Mild steel, zinc coated or protected with rust-inhibitive paint.
D. Seismic Struts: Suspension-system manufacturer's standard compression struts designed to
accommodate seismic forces.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, including structural framing and substrates to which
suspended wood ceilings attach or abut, with Installer present, for compliance with
requirements specified in this and other Sections that affect ceiling installation and anchorage,
and with requirements for installation tolerances and other conditions affecting performance of
suspended wood ceilings.
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B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Measure each ceiling area and establish layout of suspended wood ceilings.
1. Balance border widths at opposite edges of each ceiling.
2. Avoid using less-than-half-width units.
3.3 INSTALLATION
A. Comply with ASTM C636/C636M and seismic requirement indicated, in accordance with
manufacturer's written instructions and CISCA's "Ceiling Systems Handbook."
B. Suspend ceiling hangers from building's structural members and as follows:
1. Install hangers plumb and free from contact with insulation or other objects within ceiling
plenum that are not part of supporting structure or of ceiling suspension system.
2. Splay hangers only where required to miss obstructions; offset resulting horizontal forces
by bracing, countersplaying, or other equally effective means.
3. Where width of ducts and other construction within ceiling plenum produces hanger
spacings that interfere with location of hangers at spacings required to support standard
suspension-system members, install supplemental suspension members and hangers in
form of trapezes or equivalent devices.
4. Secure wire hangers to ceiling suspension members and to supports above with a
minimum of three tight turns in 3 inches. Connect hangers directly either to structures or
to inserts, eye screws, or other devices that are secure and appropriate for substrate to
which hangers are attached and for type of hanger involved.
5. Secure rod hangers to structure, including intermediate framing members, by attaching to
inserts, eye screws, or other devices that are secure and appropriate for both structure to
which hangers are attached and type of hanger involved. Install hangers in a manner
that does not cause them to deteriorate or fail due to age, corrosion, or elevated
temperatures.
6. Do not support ceilings directly from permanent metal forms or floor deck.
7. When steel framing does not permit installation of hanger wires at spacing required,
install carrying channels or other supplemental support for attachment of hanger wires.
8. Do not attach hangers to steel deck tabs.
9. Do not attach hangers to steel roof deck. Attach hangers to structural members.
10. Space hangers not more than 48 inches o.c. along each member supported directly from
hangers unless otherwise indicated; provide hangers not more than 8 inches from ends
of each member.
11. Size supplemental suspension members and hangers to support ceiling loads within
performance limits established by referenced standards and publications.
C. Install edge moldings and trim at perimeter of ceiling area and where necessary to conceal
edges and ends of wood units.
1. Screw-attach metal moldings to substrate at intervals of not more than 16 inches o.c. and
not more than 3 inches from ends, leveling with ceiling suspension system to a tolerance
of 1/8 inch in 12 feet. Miter corners accurately and connect securely.
2. Do not use exposed fasteners on moldings and trim.
D. Grid Suspension Systems: Space main beams at 48 inches o.c.
1. Install cross tees to form modules sized in accordance with manufacturer's written
installation instructions.
2. Remove and replace dented, bent, or kinked members.
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E. Linear-Carrier Suspension Systems: Install carriers at no more than 24 inches o.c. aligned and
securely interlocked with one another.
1. Install stabilizer channels, tees, and bars at regular intervals to stabilize carriers and at
light fixtures, air-distribution equipment, access doors, and other equipment; spaced as
standard with manufacturer for use indicated.
2. Remove and replace dented, bent, or kinked members.
F. Install wood components and accessories in accordance with manufacturer's written
instructions and to accommodate natural expansion and contraction of wood products resulting
from fluctuations in humidity.
G. Cut wood components for accurate fit at borders and at interruptions and penetrations by other
work through ceilings.
1. Stiffen edges of cut wood components as required to eliminate variations in flatness.
H. Treat field-cut edges of wood components in accordance with manufacturer's written
recommendations; finish exposed field cuts to match factory finish.
1. Wood-Veneer Units: Edge band exposed field-cut edges.
I. Install wood components in coordination with suspension system and moldings and trim.
1. Install wood components in patterns indicated on Drawings.
J. Install field-constructed access panels in locations indicated on Drawings.
3.4 FIELD QUALITY CONTROL
A. Special Inspections: Owner will engage a qualified special inspector to perform the following
special inspections:
1. Suspended ceiling system.
2. Hangers, anchors, and fasteners.
B. Ceiling hangers, anchors, and fasteners will be considered defective if they do not pass tests
and inspections.
3.5 CLEANING
A. Clean exposed surfaces of ceilings, including trim and edge moldings. Comply with
manufacturer's written instructions for cleaning and touchup of minor finish damage. Remove
and replace ceiling components that cannot be successfully cleaned and repaired to
permanently eliminate evidence of damage, including dented units.
END OF SECTION