\* \* \* \* \* \* \* \* \* \*

READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 10: SPECIALTIES]{.underline}

SECTION 10431 - EXTERIOR FREE-STANDING SIGNS

USE: Furnishing and installing exterior freestanding signs. This does
not include interior signs (10440), pylon/building-mounted signs
(10432), or traffic signs (02890).

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**DRAWING DATA REQUIRED:**

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 11/01

Metric:

Technical Update: 9/97

SECTION 10431

EXTERIOR FREE-STANDING SIGNS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY

A. Section Includes: \[Furnishing and\] \[Installing\] exterior post and
panel type signs \[including electrical sign lighting\].

1.2 SUBMITTALS

A. General: Submittals shall be according to \[Section 01009 - General
Information and Requirements.\] \[Section 01330 - Submittal
Procedures.\]

B. Manufacturer\'s Literature: Submit three copies of the
manufacturer\'s descriptive data, catalog cuts, and installation,
maintenance, and cleaning instructions for the sign types including
materials and components to be used on this project.

C. Shop Drawings: \[Drawings shall be prepared by and bear the stamp of
a \[registered engineer\] \[licensed architect\]. \[Furnish a bill of
materials with the shop drawings.\] Include a schedule showing the
location of \[\_\_\_\_\_\_\_\]. Drawings shall be \[same\] \[larger\]
scale as the full size Contract Drawings. Submit three copies of shop
\[and erection\] drawings. Drawings shall include the following:

1\. Detail drawings

2\. Templates

3\. Erection or installation and mounting or anchoring.

4\. Dimensions and elevations of each type of sign, including thickness
of materials.

5\. Reinforcement and anchorage

6\. Schedule showing location of each sign.

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INCLUDE ITEMS AS APPROPRIATE. CONSIDER USING MANUFACTURER\'S CATALOG
DATA IN LIEU OF SAMPLES OR CERTIFICATES.

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D. Samples: Submit three samples of each \[color\] \[and\] \[pattern\]
\[style\] of lettering \[\_\_\_\_\_\_\] to be used on this project.
\[Samples shall be actual material in\] \[colors required\] \[the full
range of colors required.\] \[Furnish \[[ ]{.underline}\] copies of the
manufacturer\'s standard color chart for color selection.\] \[Stain\]
\[Paint\] \[Finish\] \[shall be on the same base material as required in
this specification.\] Samples may be installed in the work, provided
each sample is clearly identified and its location recorded.

[PART 2: PRODUCTS]{.underline}

2.1 PANEL MATERIALS

A. Wood Face Panel: \[Will be furnished by the Contracting Officer
according to Section 01019 - Government-Furnished Property.\] Shall be
3 inch thick (actual) \[unless shown otherwise\], of clear, heart,
vertical grain redwood or cedar according to WWPA Standard Grading Rules
for Western Lumber.\] \[Western redcedar according to WCLIB Standard
Rules for West Coast Lumber.\] \[as shown on the drawings.\]

B. Aluminum Alloy Panels: Panels shall be provided in sizes shown on
drawings. Panels shall be designed to be interchangeable. Panels with
metal return sheeting shall have welded corners, ground smooth.
\[Heliarc weld panel to framing system.\]

1\. Sheet or Plate: ASTM B 209\[M\], Alloy 6061-T6. The blanks shall be
free from laminations, blisters, open seams, pits, holes or other
defects that affect appearance or use. Shearing, cutting, or punching
shall be accomplished prior to preparing the blanks for application of
reflective material. Provide at least 1.3 mm (16 gage, 0.0508 inch)
thick.

2\. Aluminum Extrusions: ASTM B 221\[M\]. Provide aluminum extrusions at
least 3 mm (1/8 inch) thick.

3\. Aluminum Castings: ASTM B 26\[M\] or ASTM B 108. Provide aluminum
castings of solid aluminum cast certified by AA 46 alloy designation
B443.0. Burrs and rough spots shall be removed and polished. Faces shall
be finished to a uniform high luster.

a\. Where anodic coatings are specified, alloy shall conform to Aluminum
Association\'s alloy designation 514.0 or A514.0.

C. Steel Panels: Panels shall be provided in sizes shown on drawings.
Panels shall be designed to be interchangeable. Panels with metal return
sheeting shall have welded corners, ground smooth. \[Heliarc weld panel
to framing system.\]

1\. Structural Steel: ASTM A 36\[M\].

2\. Sheet, Strip, or Plates: \[ASTM A 167\] \[ASTM A 570\].

3\. Cast Metal: Fabricate with square corners, flat faces, and accurate
profiles. Remove burrs and rough spots. Belt polish faces to uniform
high luster finish. File sides smooth with tool marks removed by fine
abrasive grain air blasting, or other suitable method.

4\. Cast Bronze: ASTM B 62. Burrs and rough spots shall be removed and
polished. Faces shall be finished to a uniform high luster.

D. Cast Plaques: Metal plaques shall consist of cast \[aluminum\]
\[bronze\] panels with \[leatherette\] \[pebble\] background texture
with \[clear lacquer\] \[oxidized\] \[paint\] finish. Letter styles and
sizes shall be as shown on the drawings. Letters shall be sharp and hand
tooled. Faces of letters shall be polished satin finish. Border style
shall be \[standard\] \[custom\] design as shown on the drawings.
Borders and faces shall have sharp hand tooled edges.

1\. Mounting Method: Plaque mounting method shall be concealed fastening
or rosette fastening as shown on the drawings.

E. Glass: ASTM C 1036, Type 1, Class 1, Quality q3; and ANSI Z 97.1.

F. Fiber-Reinforced Polyester (FRP): ASTM D 3841, Type II, Grade 1,
Class 124, color: \[\_\_\_\_\_\] \[as indicated\].

G. Acrylic Sheet: \[ASTM D 4802, Type III.\] \[Acrylic sheet shall be in
accordance with the flammability requirements of ASTM E 84 and shall
conform to ANSI Z97.1.\]

H. Polycarbonate Sheet: SAE AMS 3611.

I. Concrete: Shall be 2500-psi, 28-day strength concrete and meet the
requirements of \[Section 03306 - Minor Concrete.\] \[Section 03310 -
Structural Concrete.\]

J. Rock: Shall be sound and durable rock selected from the project area.
Rock source, type of rock, and rock color shall be approved by the
Contracting Officer.

K. Masonry Mortar: ASTM C 91, one part masonry cement; ASTM C 144, two
parts fine aggregates.

L. Posts: \[As shown on the drawing.\] Provide one‑piece \[wood\]
\[aluminum\] \[galvanized steel\] posts. Posts shall be designed to
accept panel framing system described herein. The post shall be designed
to permit attachment of panel framing system without exposed fasteners.
\[Provide cap for each post, matching design, material and color of the
post.\]

1\. Steel Posts: ASTM A 499, \[billet or rail steel\] and galvanized
according to ASTM A 123.\] \[ASTM A 446, square tube\]. Posts shall be 2
by 2 inch \[12-ga tube\] \[unless shown otherwise\]. \[The posts shall
have 3/8 inch holes drilled or punched, before galvanizing, along the
centerline of the post. The holes shall begin 1 inch from the ends of
the post and be spaced 1 inch apart.\]

2\. Aluminum Posts: Provide one‑piece extruded aluminum posts with
minimum 3.17 mm (0.125 inch) wall thickness, unless shown otherwise.

3\. Wood Posts: Shall be \[10-inch diameter\] \[4 by 4 inch, S45\]
\[unless shown otherwise\]. \[Douglas Fir\], \[western red cedar\],
\[telephone pole\] quality or better. Preservative treatment shall be
according to Section 06312 - Preservative-Treated Poles and Posts.

E. Panel Framing System: Provide panel framing consisting of \[aluminum
extrusions and\] \[interlocking track components\] designed to interlock
with posts by concealed fasteners. \[Design top or bottom framing
members to be removable to permit \[access to electrical equipment\]
\[and\] \[panel removal\].\]

F. Fasteners, Anchors, and Hardware: Shall be compatible with sign
material to which applied with matching color and finish. Protect
against galvanic action or chemical interaction of adhesives. Provide
and install approved anti-theft nut and nylon washer with bolts.\] Sizes
shall be as shown on the drawings, or no smaller than 5/16 inch.

1\. ASTM A 153 for galvanized steel.

2\. Expansion Shields: Shields shall be recessed and \[unless otherwise
indicated,\] not less than 65 mm (2 1/2 inches) into concrete or
masonry.

3\. Lag Screws and Bolts: ANSI B18.2.1.

4\. Bolts, Nuts, Studs, and Rivets: ANSI B18.2.1 or ANSI B18.7.

5\. Powder Driven Fasteners: When permitted by ANSI A10.3. Follow safety
provisions of ANSI A10.3.

6\. Screws: ANSI B18.2.1, ANSI B18.6.1, ANSI B18.6.2, and ANSI B18.6.3.

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Coordinate illumination with Division 16, \"Electrical,\" and available
electric service.

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G. Illumination: Provide concealed lighting within panel framing
members. Provide T‑12 slimline lamps, \[120\] \[277\] \[\_\_\_\] volts,
60 Hertz, single-phase, Type I, or Type 2 ballast. Provide ballast
integrally mounted, high power factor and rated for use up to minus
29 degrees C (minus 20 degrees F) ambient starting temperature. Provide
ballast and wiring within the sign in metal raceways. \[For outdoor
signs provide Type 1 or Type 2 ballast.\] Provide UL listed electrical
equipment that complies with NFPA 70. Evenly distribute illumination so
that graphics glow with a minimum of halation. Provide a switch on the
interior of the sign to turn off power in sign. Provide a switch readily
accessible when sign is open.

2.2 GRAPHICS AND LETTERING

A. Tactile Requirements: Signage that provides permanent information,
general circulation directions, or identification of spaces shall be
tactile (perceptible to touch) and shall comply with 36 CFR 1191 and
FED‑STD 795. Characters, symbols, or pictographs on tactile engraved
signs shall meet 36 CFR 1191 Grade 2 braille and FED‑STD 795.

B. Visual Requirements: Characters and symbols shall contrast in color
with their background.

C. Pressure-Applied Lettering: Shall include a precoated pressure
sensitive adhesive backing.

1\. Retro-Reflective Vinyl: Provide pressure sensitive die-cut vinyl
letters conforming to AASHTO M 268 for Type II material. \[Hand‑cut
letters are not acceptable.\] Vinyl sheeting shall be in accordance with
the flammability requirements of ASTM E 84 and shall be a minimum 0.08
mm (0.003 inch) film thickness. Background sheeting shall be standard
brown, FHA PL color #5 with 3/4-inch border. Lettering shall be
reflectorized silver white. Minimum 0.08 mm (0.003 inch) film thickness.
Adhesive backing shall be Class 1 or Class 3.

a\. Panel Message: Characters and symbols shall be direct applied.

b\. Typeface: \[Gothic sans serif\] unless shown otherwise.

2\. \[Aluminum\] \[Steel\] Lettering: Provide pressure sensitive die‑cut
letters \[with reflecting surface\]. Hand‑cut letters are not
acceptable.\]

D. Fastener-Applied Lettering: Provide \[cast\] \[custom fabricated\]
\[plate\] \[aluminum\] \[steel\] \[acrylic\] \[wood\] letters and
graphics, \[6\]\[13\] mm (\[1/4\] \[1/2\] inch) thick. Internally attach
to the message panel with concealed fasteners. Message shall be as shown
on the drawings.

E. Projected Letters: Letters shall be \[cast\] \[extruded\]
\[fabricated\] \[aluminum\] \[bronze\]\[wood\] \[acrylic\] in sizes
shown on the drawings. Project letters \[\_\_\_\] mm (\[\_\_\_\] inches)
from face of panel or as shown on the drawings.

1\. Letters which project from the panel face shall have stud spacer
sleeves. Letters, studs, and sleeves shall be of the same material.
Templates for mounting shall be supplied.

F. Cutout Recessed Letters: Cut out message letters from panel.

1\. Back up panel with 2 mm (0.080 inch) FRP where cutouts occur.

2\. Back up panel with 3 mm (0.125 inch) acrylic where cutouts occur.

3\. Recessed surface shall be contrasting color from \[wood\]
\[aluminum\] \[steel\] \[bronze\] face of panel.

G. Embedded Letters: Embed message in FRP sheet and completely cover
with thermosetting polyester resin. Embed message minimum 0.80 mm
(1/32 inch). Process sheets in one piece, in one process, to prevent
delamination.

H. Silkscreened Images: Apply message to panel using the silkscreen
process. Execute silkscreened images with photo screens prepared from
original art. No handcut screens will be accepted. Original art shall be
defined as artwork that is a first generation reproduction of the
specified art. Clean edges and corners. Rounded corners, cut or ragged
edges, edge build‑up, bleeding or surface pinholes will not be accepted.

I. Frisket Method: Message shall be applied using the frisket method.
Photomechanically reproduced graphic masks shall be applied to the sign
face which has been coated with the graphics color. A background shall
then be applied to the exposed surfaces. No handcut masks will be
accepted. Edges that are nicked, cut, or ragged will not be acceptable.

2.3 FABRICATION AND MANUFACTURE

A. Requirements: Work shall be assembled in the shop, insofar as
practicable, ready for installation at the site. Work that cannot be
shop assembled shall be given a trial fit in the shop to ensure proper
field assembly. Holes for bolts and screws shall be drilled or punched.
Drilling and punching shall produce clean, true lines and surfaces.
Welding to or on structural steel shall be in accordance with AWS D1.1.
Welding shall be continuous along the entire area of contact. Exposed
welds shall be ground smooth. Exposed surfaces of work shall have a
smooth finish and exposed riveting shall be flush. Fastenings shall be
concealed where practicable. Items specified to be galvanized shall be
by hot‑dip process after fabrication if practicable. Galvanization shall
be in accordance with ASTM A 123 and ASTM A 653\[M\], as applicable.
Other metallic coatings of steel sheet shall be in accordance with ASTM
A 924\[M\]. Joints exposed to the weather shall be formed to exclude
water. Drainage and weep holes shall be included as required to prevent
condensation buildup.

B. Dissimilar Materials: Where dissimilar metals are in contact, or
where aluminum is in contact with concrete, mortar, masonry, wet or
pressure‑treated wood, or absorptive materials subject to wetting,
protect surfaces with \[two coats of epoxy primer at 0.08 mm (3.0 mils)
dry film thickness (DFT) each coat and finish with one coat of latex
paint at 0.050 mm (2.0 mils) DFT\] \[a coat of asphalt varnish or a coat
of zinc‑molybdate primer\] to prevent galvanic or corrosive action.

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IF SIGNS ARE TO HAVE EXTENSIVE METAL PARTS OR ARE TO BE ANCHORED TO
STRUCTURAL STEEL, INCLUDE THIS PARAGRAPH. OTHERWISE EDIT AS APPROPRIATE.

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C. Shop Painting: Surfaces of miscellaneous metal work, except
nonferrous metal, corrosion resisting steel, and zinc‑coated work, shall
be given one coat of zinc‑molybdate primer or an approved rust‑resisting
treatment and metallic primer in accordance with manufacturer\'s
standard practice. Surfaces of items to be embedded in concrete shall
not be painted. Upon completion of work, damaged surfaces shall be
recoated.

2.4 FINISHES

A. Aluminum Finishes: Provide exposed aluminum surfaces \[mill
finished\] \[factory finished with \[anodic coating\] \[or\] \[organic
coating\]\].

1\. Anodic Coating: Anodized finish shall conform to AA DAF‑45 as
follows:

a\. Clear (natural) designation AA‑M10‑C22‑A31, Architectural Class II
0.010 mm (0.4 mil) or thicker.

b\. Clear (natural) designation AA‑M10‑C2‑A41, Architectural Class I
0.018 mm (0.7 mil) or thicker.

c\. Integral color anodized designation AA‑M10‑C22‑A32, Architectural
Class II 0.010 to 0.018 mm (0.4 to 0.7 mil). Color: \[\_\_\_\_\_\] \[as
indicated\].

d\. Integral color‑anodized designation AA‑M10‑C22‑A42, Architectural
Class I 0.018 mm (0.7 mil) or thicker. Color: \[\_\_\_\_\_\] \[as
indicated\].

e\. Electrolytically deposited color‑anodized designation
AA‑M10‑C22‑A34, Architectural Class II 0.010 to 0.018 mm (0.4 to
0.7 mil). Color: \[\_\_\_\_\_\] \[as indicated\].

f\. Electrolytically deposited color‑anodized designation
AA‑M10‑C22‑A44, Architectural Class I 0.018 mm (0.7 mil) or thicker.
Color: \[\_\_\_\_\_\] \[as indicated\].

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ORGANIC COATING IS A SURFACE FINISH BY PAINT, LACQUER, ENAMEL OR FILM IN
WHICH THE PRINCIPAL INGREDIENTS ARE DERIVED FROM ANIMAL OR VEGETABLE
MATTER OR FROM SOME COMPOUND OF CARBON.

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2\. Organic Coating: Clean, prime and provide exposed \[aluminum\]
\[wood\] \[steel\] surfaces with a \[semi-gloss\] baked enamel \[or
two-component acrylic polyurethane\] finish in accordance with \[AAMA
605.2\] \[NAAMM AMP 505\], with total dry film thickness not less than
0.03 mm (1.2 mils). Color: \[\_\_\_\_\_\] \[as indicated\].

a\. Stain: For wood panel signs shall be semi-transparent oilbase
penetrating rustic stain, as approved.

PART 3: EXECUTION

3.1 PREPARATION

A. Location: Exact sign locations will be staked by the Government.
Locations will be in the proximity of the locations shown on the
drawings.

B. Examination: Examine condition of locations and surfaces on which
signs will be installed. Do not proceed with installation until defects
or errors which would result in poor installation have been corrected.

C. Cleaning Letters: Clean \[aluminum\] \[steel\] letters by chemical
etching or clean ultrasonically in a special degreasing bath using high
frequency sound waves. Package letters to protect them until
installation.

3.2 INSTALLATION

A. General: Signs will be approved by the Contracting Officer before
installation. Install signs at locations as indicated. Ensure that signs
are installed plumb and true, at mounting heights indicated, and by
method shown or specified.

B. Excavation: Excavate holes for the sign posts. Wood posts may be set
in holes without concrete provided the holes are the same size as the
posts. Backfill shall be accomplished as required to complete the
installation.

C. Embedding and Anchoring: \[Removable mounting shall be provided by a
steel \[sleeve\] \[plate\] embedded in concrete as shown.\] \[Permanent
mounting shall be provided by embedding posts in concrete foundation as
shown.\] \[The concrete shall be finished at or slightly below ground
line and care shall be taken not to splash concrete on the posts.\]

1\. Concrete is specified in Section \[03306 - Minor Concrete\]
\[03310 - Structural Concrete\].

2\. Anchorage: Provide anchorage to ensure that signs are fastened
securely in place. Anchorage not otherwise specified or indicated shall
include slotted inserts, expansion shields, and power‑driven fasteners
when approved for concrete; toggle bolts and through bolts for masonry;
machine and carriage bolts for steel; through bolts, lag bolts, and
screws for wood. Provide slotted inserts of types required to engage
with anchors.

D. Lettering and Graphics: Follow manufacturer\'s approved written
instructions. Completed sign messages shall be installed or applied to
provide continuous characters and symbols, free of warp, blisters,
wrinkles, burrs, and splinters.

1\. Mounting Projected Lettering: \[Secure in quick‑setting mortar, for
concealed anchorage.\] Project letters 13 mm (1/2 inch) from the panel
face unless shown otherwise, by \[\_\_\_\_\_\] spacers. Letters and
spacers shall be of the same material. Provide and use mounting
templates.

2\. Pressure-Applied Lettering: Shall be applied in true lines as shown
on the drawings, according to manufacturer\'s written instructions.

E. Masonry: Shall be accomplished as shown on the drawings. Joints shall
be struck with a round tool to close joints of cracks.

F. Electrical Materials: Install according to the appropriate electrical
sections.

3.3 ADJUST AND CLEAN

A. Requirements: Repair damage to signs incurred during installation.
Replace signs which cannot be repaired to new condition. Clean glass,
frames, and other sign surfaces, adjust hardware \[and electrical
equipment\] for proper operation.

3.4 DEMONSTRATION

A. Requirements: Demonstrate the maintenance required for the
illuminated signs.

3.5 PROTECTION

A. Requirements: Protect work and adjacent work and materials against
damage during progress of work until completion. Wrap finished work with
paper, polyethylene film, or strippable waterproof tape for shipment and
storage and protect from damage during installation.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT

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WHEN A \"LUMP SUM\" CONTRACT IS USED, DELETE THE TITLE PART 4:
MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.
MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009
-GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010 - SUMMARY OF
WORK.

WHEN NOT A \"LUMP SUM\" CONTRACT, SELECT APPLICABLE PHRASES; USE THE
\"NO MEASUREMENT\" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE
INCLUDED IN THE BID SCHEDULE.

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A. Units: The work described in this section will \[not be measured for
payment.\] \[be measured and paid for\] \[on a lump sum basis.\] \[by
each sign installed.\]

4.2 BASIS OF PAYMENT

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WHEN NOT A \"LUMP SUM\" CONTRACT, SELECT APPLICABLE PHRASES; USE THE
\"NO DIRECT PAYMENT\" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION
ARE INCLUDED IN THE BID SCHEDULE.

WHEN NOT A \"LUMP SUM\" CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS
SECTION, SELECT APPLICABLE PAY ITEMS. DO NOT CHANGE PAY ITEM NUMBER.
WHEN GOVERNMENT-FURNISHED PROPERTY IS SPECIFIED FOR PAY ITEMS, THE
LETTER SUFFIX GF WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.

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A. Payment: \[No direct payment for the work described under this
section will be made. Consideration for this item shall be included in
the bid price for other scheduled items of the Contract.\] \[Prices and
payment will be full compensation for the work described in this
section. Payment will be made under:\]

[Pay Item]{.underline} [Pay Unit]{.underline}

10431(01) Wood Signs Lump Sum

10431(02) Wood Signs Each

10431(03) Metal Signs Lump Sum

10431(04) Metal Signs Each

10431(05) Acrylic Signs Lump Sum

10431(06) Acrylic Signs Each

10431(07) Custom Signs Lump Sum

10431(08) Custom Signs Each

END OF SECTION