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SECTION 06401 - EXTERIOR ARCHITECTURAL WOODWORK
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
1.2
Drawings and general provisions of the Contract, including Conditions of Contract and
Division 1 Specification Sections, apply to this Section.
SUMMARY
A.
This Section includes the following:
1.
2.
Exterior standing and running trim.
Exterior ornamental work including the following:
a.
b.
c.
d.
e.
f.
g.
3.
4.
5.
6.
7.
B.
Exterior frames and jambs.
Exterior shutters.
Shop priming exterior woodwork.
Shop finishing exterior woodwork.
Wood blocking, shims, and nailers for installing woodwork items concealed within
other construction prior to woodwork installation.
Related Sections include the following:
1.
2.
3.
4.
5.
1.3
Pediment heads.
Pilasters.
Cupolas.
Balusters.
Columns.
Pergolas.
Exterior wood suspended ceiling.
Division 6 Section "Rough Carpentry" for exposed framing.
Division 6 Section "Finish Carpentry" for exterior carpentry exposed to view that is
not specified in this Section.
Division 8 Section "Flush Wood Doors."
Division 8 Section "Stile and Rail Wood Doors."
SUBMITTALS
A.
Product Data: For each type of product and process specified and incorporated into items of
exterior architectural woodwork during fabrication, finishing, and installation.
1.
2.
Include data for wood-preservative treatment from chemical treatment manufacturer
and certification by treating plant that treated materials comply with requirements.
Include data for fire-retardant treatment from chemical treatment manufacturer and
certification by treating plant that treated materials comply with requirements.
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B.
Shop Drawings: Show location of each item, dimensioned plans and elevations, large-scale
details, attachment devices, and other components.
1.
2.
3.
C.
Show details full size.
Show locations and sizes of blocking and nailers, including concealed blocking and
reinforcement specified in other Sections.
Apply WIC-certified compliance label to first page of Shop Drawings.
Samples for Verification: For the following:
1.
2.
Lumber for exterior wood stain finish, 300 sq. cm, for each species, with 1/2 of
exposed surface finished with coating.
Lumber and panel products for shop-applied opaque finish, 200 by 250 mm for
panels and 300 sq. cm for lumber, for each finish system and color, with 1/2 of
exposed surface finished.
D.
Product Certificates: Signed by manufacturers of woodwork certifying that products
furnished comply with requirements.
E.
Qualification Data: For firms and persons specified in "Quality Assurance" Article to
demonstrate their capabilities and experience. Include lists of completed projects with
project names and addresses, names and addresses of architects/engineers and owners, and
other information specified.
1.4
QUALITY ASSURANCE
A.
Quality System: Comply with ISO 9001/9002 Quality System as a minimum. Incorporate all
the standard procedures supplied by the Engineer and the Employer.
B.
Installer Qualifications: An experienced installer who has completed architectural
woodwork similar in material, design, and extent to that indicated for this Project and whose
work has resulted in construction with a record of successful in-service performance.
C.
Fabricator Qualifications: A firm experienced in producing architectural woodwork similar
to that indicated for this Project and with a record of successful in-service performance, as
well as sufficient production capacity to produce required units.
D.
Source Limitations for Fabrication and Installation: Engage a qualified woodworking firm
to assume undivided responsibility for fabricating and installing woodwork specified in this
Section.
E.
Quality Standard: Unless otherwise indicated, comply with AWI's "Architectural
Woodwork Quality Standards" for grades of exterior architectural woodwork, construction,
finishes, and other requirements.
1.
F.
Provide AWI Quality Certification Program [labels] [certificate] indicating that
woodwork complies with requirements of grades specified.
Fire-Test-Response Characteristics: Where fire-retardant materials or products are
indicated, provide materials and products with specified fire-test-response characteristics as
determined by testing identical products per test method indicated by UL, ITS, or another
testing and inspecting agency acceptable to authorities having jurisdiction. Identify with
appropriate markings of applicable testing and inspecting agency in the form of separable
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paper label or, where required by authorities having jurisdiction, imprint on surfaces of
materials that will be concealed from view after installation.
1.
Surface Burning Characteristics: Not exceeding values indicated below, when
subjected to accelerated weathering test ASTM D 2898, Method A, and then tested
per ASTM E 84 for 30 minutes with no evidence of significant combustion. In
addition, the flame front shall not progress more than 3.2m beyond the center line of
the burner at any time during the test.
a.
b.
1.5
Flame Spread: 25.
Smoke Developed: 450.
PROJECT CONDITIONS
A.
Weather Limitations: Proceed with installation of exterior woodwork only when existing
and forecasted weather conditions permit work to be performed and at least one coat of
specified finish to be applied without exposure to rain, snow, or dampness.
B.
Field Measurements: Where woodwork is indicated to fit to other construction, verify
dimensions of other construction by field measurements before fabrication and indicate
measurements on Shop Drawings. Coordinate fabrication schedule with construction
progress to avoid delaying the Work.
1.
1.6
Locate concealed framing, blocking, and reinforcements that support woodwork by
field measurements before being enclosed and indicate measurements on Shop
Drawings.
COORDINATION
A.
Coordinate sizes and locations of framing, blocking, reinforcements, and other related units
of Work specified in other Sections to ensure that exterior architectural woodwork can be
supported and installed as indicated.
PART 2 - PRODUCTS
2.1
WOODWORK FABRICATORS
A.
Available Fabricators: Subject to compliance with requirements, fabricators offering
exterior architectural woodwork that may be incorporated into the Work include, but are not
limited to, the following:
B.
Fabricators: Subject to compliance with requirements, provide exterior architectural
woodwork by one of the following:
2.2
MATERIALS
A.
General: Provide materials that comply with requirements of the AWI quality standard for
each type of woodwork and quality grade indicated and, where the following products are
part of exterior woodwork, with requirements of the referenced product standards that apply
to product characteristics indicated:
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1.
2.
3.
2.3
WOOD-PRESERVATIVE-TREATED MATERIALS
A.
Preservative Treatment by Nonpressure Process: Comply with AWPA N1 using the
following preservative for woodwork items indicated to receive water-repellent preservative
treatment:
1.
2.
B.
2.
C.
2.4
Water-Repellent Preservative: Formulation containing 3-iodo-2-propynyl butyl
carbamate (IPBC) complying with AWPA P8 as its active ingredient.
Water-Repellent Preservative/Insecticide: Formulation containing 3-iodo-2-propynyl
butyl carbamate (IPBC) as its active ingredient, combined with an insecticide
containing chlorpyrifos as its active ingredient, both complying with AWPA P8.
Preservative Treatment by Pressure Process: Comply with AWPA C2 (lumber) and
AWPA C9 (plywood) and the following for woodwork items indicated to receive pressurepreservative treatment. Mark each treated item with the quality mark requirements of an
inspection agency approved by ALSC's Board of Review.
1.
Preservative Chemicals: Pressure-impregnate woodwork with preservative chemicals
acceptable to authorities having jurisdiction [and containing no arsenic or
chromium]. Use chemical formulations that do not bleed through or otherwise
adversely affect finishes. Do not use colorants in solution to distinguish treated
material from untreated material.
Pressure-treat aboveground items with preservatives to a minimum retention of 0.25
lb/cu. ft. (4.0 kg/cu. m). Kiln-dry lumber and plywood after treatment to a maximum
moisture content, respectively, of 19 and 15 percent.
Extent of Treatment: Treat blocking and nailers by pressure process and treat other exterior
architectural woodwork either by pressure or nonpressure process[, unless fabricated from
naturally durable wood] [, regardless of species from which it is fabricated].
FIRE-RETARDANT-TREATED MATERIALS
A.
General: Comply with AWPA C20 (lumber) and AWPA C27 (plywood), exterior type, for
woodwork items indicated as fire-retardant treated.
1.
2.
3.
4.
2.5
Hardboard: AHA A135.4.
Softwood Plywood: DOC PS 1, [Exterior] [Medium Density Overlay].
Medium-Density Fiberboard: ANSI A208.2, Grade MD-Exterior Glue.
Fire-Retardant Chemicals: Use chemical formulations that do not bleed through or
otherwise adversely affect finishes. Do not use colorants in solution to distinguish
treated material from untreated material.
Mill lumber before treatment and implement special procedures during treatment and
drying processes that prevent lumber from warping and developing discolorations
from drying sticks or other causes, marring, and other defects affecting appearance of
treated woodwork.
Kiln-dry material before and after treatment to levels required for untreated material.
Do not use treated material that does not comply with requirements of referenced
woodworking standard or that is warped, discolored, or otherwise defective.
INSTALLATION MATERIALS
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A.
Blocking, Shims, and Nailers: Softwood or hardwood lumber, [pressure-preservative
treated] [fire-retardant treated], kiln-dried to less than 15 percent moisture content.
B.
Nails: [Aluminum,] [hot-dip galvanized,] [or] [stainless steel].
C.
Screws: [Aluminum,] [bronze,] [hot-dip galvanized,] [or] [stainless steel].
1.
D.
2.6
For metal framing supports, provide self-drilling screws as recommended by metalframing manufacturer.
Anchors: Select material, type, size, and finish required for each substrate for secure
anchorage. Provide nonferrous-metal or hot-dip galvanized anchors and inserts, unless
otherwise indicated. Provide toothed-steel or lead expansion sleeves for drilled-in-place
anchors.
FABRICATION, GENERAL
A.
Wood Moisture Content: Comply with requirements of referenced quality standard for wood
moisture content in relation to relative humidity conditions existing during time of
fabrication and in installation areas. [9 to 15] [10 to 15] [7 to 12] percent.
1.
B.
All lumber shall be kiln-dried.
Fabricate woodwork to dimensions, profiles, and details indicated. Ease edges to radius
indicated for the following:
1.
2.
Edges of Solid-Wood (Lumber) Members 20 mm Thick or Less: 1.5 mm.
Edges of Rails and Similar Members More Than 20 mm Thick: 3 mm.
C.
Complete fabrication, including assembly, finishing, and hardware application, to maximum
extent possible, before shipment to Project site. Disassemble components only as necessary
for shipment and installation. Where necessary for fitting at site, provide ample allowance
for scribing, trimming, and fitting.
D.
Shop-cut openings, to maximum extent possible, to receive hardware, electrical work, and
similar items. Locate openings accurately and use templates or roughing-in diagrams to
produce accurately sized and shaped openings. Smooth edges of cutouts and seal with a
water-resistant coating suitable for exterior applications.
2.7
EXTERIOR STANDING AND RUNNING TRIM FOR TRANSPARENT FINISH
A.
Quality Standard: Comply with AWI Section 300.
B.
Quality Standard: Comply with WIC Section 7.
C.
Grade: [Premium] [Custom] [Economy].
D.
Backout or groove backs of flat trim members and kerf backs of other wide, flat members,
except for members with ends exposed in finished work.
E.
Assemble casings in plant except where shipping limitations require field assembly.
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F.
Wood Species: [All heart redwood] [Western red cedar] [Eastern white pine] [African
Mahogany] [American Red Oak] [American White Oak] [French Oak] <Insert species>.
1.
2.8
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR STANDING AND RUNNING TRIM FOR OPAQUE FINISH
A.
Quality Standard: Comply with AWI Section 300.
B.
Quality Standard: Comply with WIC Section 7.
C.
Grade: [Premium] [Custom] [Economy].
D.
Backout or groove backs of flat trim members and kerf backs of other wide, flat members,
except for members with ends exposed in finished work.
E.
Assemble casings in plant except where shipping limitations require field assembly.
F.
Wood Species: [All heart redwood] [Western red cedar] [Eastern white pine, sugar
pine, or western white pine] [Any closed-grain hardwood] [African Mahogany]
[American Red Oak] [American White Oak] [French Oak] <Insert species>.
1.
2.9
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR ORNAMENTAL WORK FOR TRANSPARENT FINISH
A.
Quality Standard: Comply with AWI Section 700.
B.
Quality Standard: Comply with WIC Section 8.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [Teak] [African mahogany] [All heart redwood] [Western red cedar]
[American Red Oak] [American White Oak] [French Oak] <Insert species>.
1.
2.10
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR ORNAMENTAL WORK FOR OPAQUE FINISH
A.
Quality Standard: Comply with AWI Section 700.
B.
Quality Standard: Comply with WIC Section 8.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [All heart redwood] [Western red cedar] [Ponderosa pine] [Eastern
white pine, sugar pine, or western white pine] [Any closed-grain hardwood] [Plywood]
[Medium-density fiberboard] [Douglas Fir] [South American Cedar] <Insert species>.
1.
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
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2.11
EXTERIOR FRAMES AND JAMBS FOR TRANSPARENT FINISH
A.
Quality Standard: Comply with AWI Section 900.
B.
Quality Standard: Comply with WIC Section 9.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [Teak] [All heart redwood] [Western red cedar] [White oak] [African
Mahogany] [American Red Oak] [American White Oak] [French Oak] <Insert species>.
1.
2.12
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR FRAMES AND JAMBS FOR OPAQUE FINISH
A.
Quality Standard: Comply with AWI Section 900.
B.
Quality Standard: Comply with WIC Section 9.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [All heart redwood] [Western red cedar] [Ponderosa pine] [Eastern
white pine, sugar pine, or western white pine] [Any closed-grain hardwood] [African
Mahogany] [American Red Oak] [American White Oak] [French Oak] <Insert species>.
1.
2.13
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
PERGOLAS
A.
Quality: Comply with AWI Section 700.
B.
Grade: Premium.
C.
Wood Species: [South American Cedar] <Insert species>
1.
2.14
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR SHUTTERS FOR TRANSPARENT FINISH
A.
Quality Standard: Comply with AWI Section 1200.
B.
Quality Standard: Comply with WIC Section 23.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [Teak] [African mahogany] [All heart redwood] <Insert species>.
1.
2.15
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
EXTERIOR SHUTTERS FOR OPAQUE FINISH
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A.
Quality Standard: Comply with AWI Section 1200.
B.
Quality Standard: Comply with WIC Section 23.
C.
Grade: [Premium] [Custom] [Economy].
D.
Wood Species: [All heart redwood] [Ponderosa pine] [Eastern white pine, sugar pine,
or western white pine] <Insert species>.
1.
2.16
Do not use plain-sawn lumber with exposed, flat surfaces more than 75 mm wide.
SHOP PRIMING
A.
Woodwork for Opaque Finish: Shop prime woodwork for paint finish with one coat of
wood primer specified in Division 9 Section "Painting."
B.
Woodwork for Transparent Finish: Shop seal woodwork for transparent finish with stain (if
required), other required pretreatments, and first coat of finish as specified in the following:
1.
C.
Preparations for Finishing: Comply with referenced quality standard for sanding, filling
countersunk fasteners, sealing concealed surfaces, and similar preparations for finishing
architectural woodwork, as applicable to each unit of work.
1.
2.17
Backpriming: Apply one coat of sealer or primer, compatible with finish coats, to
concealed surfaces of woodwork. [Apply two coats to surfaces installed in contact
with concrete or masonry and to end-grain surfaces.]
SHOP FINISHING
A.
Quality Standard: Comply with AWI Section 1500, unless otherwise indicated.
1.
Grade: [Premium] [Custom] [Economy].
B.
General: The entire finish of exterior architectural woodwork is specified in this Section.
To greatest extent possible, finish architectural woodwork at fabrication shop. Defer only
final touchup and cleaning until after installation.
C.
Preparations for Finishing: Comply with referenced quality standard for sanding, filling
countersunk fasteners, sealing concealed surfaces, and similar preparations for finishing
architectural woodwork, as applicable to each unit of work.
1.
D.
Backpriming: Apply one coat of sealer or primer, compatible with finish coats, to
concealed surfaces of woodwork. Apply two coats to surfaces installed in contact
with concrete or masonry and to end-grain surfaces.
Opaque Finish: Comply with requirements indicated below for finish system, color, and
sheen, with sheen measured on 60-degree gloss meter per ASTM D 523:
1.
AWI Finish System OP-6: Catalyzed polyurethane.
2.
Proprietary Finish System: High-performance, polymer-coating system applied by
specialists trained by coating manufacturer and consisting of water-repellent
preservative, polyurea primer, and elastomeric polyurethane topcoat.
3.
Color: As indicated by manufacturer's designations.
4.
Color: Match the Engineer's sample.
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5.
6.
Color: As selected by the Engineer from manufacturer's full range.
Sheen: [Satin 30-50] [Semigloss 55-75] [Gloss 80-100] gloss units.
PART 3 - EXECUTION
3.1
PREPARATION
A.
Condition woodwork to average prevailing humidity conditions in installation areas before
installation.
B.
Deliver concrete inserts and similar anchoring devices to be built into substrates well in
advance of time substrates are to be built.
C.
Before installing architectural woodwork, examine shop-fabricated work for completion and
complete work as required, including removal of packing and backpriming.
3.2
INSTALLATION
A.
Quality Standard: Install woodwork to comply with AWI Section 1700 for the same grade
specified in Part 2 of this Section for type of woodwork involved.
B.
Install woodwork true and straight with no distortions. Shim as required with concealed
shims. Install level and plumb to a tolerance of 3 mm in 2400 mm.
C.
Scribe and cut woodwork to fit adjoining work, and refinish cut surfaces or repair damaged
finish at cuts.
D.
Fire-Retardant-Treated Wood: Handle, store, and install fire-retardant-treated wood to
comply with recommendations of chemical treatment manufacturer, including those for
adhesives used to install woodwork.
E.
Preservative-Treated Wood: Where cut or drilled in field, treat cut ends and drilled holes
according to AWPA M4.
F.
Anchor woodwork to anchors or blocking built in or directly attached to substrates. Secure
to grounds, stripping and blocking with countersunk, concealed fasteners and blind nailing.
Use fine finishing nails for exposed nailing, countersunk and filled flush with woodwork.
G.
Standing and Running Trim: Install with minimum number of joints possible, using fulllength pieces (from maximum length of lumber available) to greatest extent possible. Do
not use pieces less than 900 mm long, except where shorter single-length pieces are
necessary. Scarf running joints and stagger in adjacent and related members.
1.
H.
Install standing and running trim with no more variation from a straight line than 3
mm in 2400 mm.
Installing wood suspended ceiling:
1.
2.
Install wood ceilings to comply with ASTM C 636 per manufacturer’s written
instructions and CISCA’S Ceiling Systems Handbook.”
Suspend ceiling hangers from building’s structural members and as follows:
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a.
b.
c.
3.
4.
5.
6.
Install hangers plumb and free from contact with insulation or other objects
within ceiling suspension system.
Secure hangers to structure, including intermediate framing members, by
attaching to inserts, eye screws, or other devices that are secure and appropriate
for structure to which hangers are attached and for type of hanger involved.
Install hangers in a manner that will not cause them to deteriorate or fail due to
age, corrosion, or elevated temperatures.
Secure bracing wires to ceiling suspension members and to supports with a
minimum of four tight turns. Suspend bracing from building’s structural
members as required for hangers, without attaching to permanent metal forms,
steel deck, or steel deck tabs. Fasten bracing wires into concrete with cast-inplace or postinstalled anchors.
Install edge moldings and trim of type indicated at perimeter of each ceiling area and
where necessary to conceal edges of units.
Install softwood framing members so that they are aligned with one another.
Scribe and cut wood unit for accurate fit fat borders and at interruptions and
penetrations, by other work, through ceilings.
Install linear wood units in coordination with suspension system and exposed
moldings and trim.
I.
Installing Wood Pergola: Install as detailed on drawings.
J.
Complete the finishing work specified in this Section to extent not completed at shop or
before installation of woodwork. Fill nail and screw holes with matching filler where
exposed.
K.
Refer to Division 9 Sections for final finishing of installed architectural woodwork.
3.3
ADJUSTING AND CLEANING
A.
Repair damaged and defective woodwork, where possible, to eliminate functional and visual
defects; where not possible to repair, replace woodwork. Adjust joinery for uniform
appearance.
B.
Clean woodwork on exposed and semiexposed surfaces. Touch up shop-applied finishes to
restore damaged or soiled areas.
3.4
PROTECTION
A.
Provide final protection and maintain conditions in a manner acceptable to fabricator and
Installer that ensures that woodwork is without damage or deterioration at the time of
Substantial Completion.
END OF SECTION 06401
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