> Project Number: AW 2226
>
> Contract Number: TW-0681 Date: May 5, 1995

SPECIAL SPECIFICATION

SECTION 07412

[MANUFACTURED METAL WALL PANELS]{.underline}

[Page]{.underline}

PART 1- GENERAL

1.01 Description of Work 2

1.02 References 2

1.03 System Description 3

1.04 Submittals 3

1.05 Quality Assurance 3

1.06 Warranty 4

PART 2- PRODUCTS

2.01 Manufacturers 4

2.02 Materials 4

2.03 Wall System 1 4

2.04 Finishes 5

PART 3- EXECUTION

3.01 Examination 6

3.02 Installation 6

3.03 Cleaning and Protection 7

**SPECIAL SPECIFICATION**

**SECTION 07412**

**[MANUFACTURED METAL WALL PANELS]{.underline}**

# PART 1 - GENERAL

## 1.01 [DESCRIPTION OF WORK]{.underline}

A. [This Section includes]{.underline} a manufactured metal wall system:

a\. Manufactured metal panels.

b\. Liner Panels.

c\. Installation Accessories.

B. [Related Sections]{.underline}: Refer to the following sections for
related work.

1\. Division 5, Section "Structural Steel," "Steel Joists," "Metal
Decking," and "Cold-Formed Metal Framing"

2\. Division 7, Section "Flashing & Sheet Metal" for sheet metal,
closures, flashing and trim.

3\. Division 7, Section "Joint Sealants"

4\. Division 7, Section "Manufactured Metal Roof Panels"

5\. Division 7, Section "Insulation"

## 1.02 [REFERENCES]{.underline}

A. [American Architectural Manufacturers Association (AAMA)]{.underline}

501 Methods of Test for Metal Curtain Walls

B. [American Society for Testing and Materials (ASTM)]{.underline}

A792 Standard Specification for Steel Sheet, 55% Aluminum-Zinc
Alloy-Coated by the Hot-Dip Process, General Requirements

E283 Standard Test Method for Water Penetration of Exterior Windows,
Curtain Walls, and Doors Under Specified Pressure Differences Across the
Specimen

E331 Standard Test Method for Water Penetration of Exterior Windows,
Curtain Walls, and Doors by Uniform Static Air Pressure Difference

C. [Uniform Building Code (UBC)]{.underline}

## 1.03 [SYSTEM DESCRIPTION]{.underline}

A. [Structural Requirements]{.underline}: Design wall system to safely
withstand dead load and live loads prescribed by the governing building
code with minimum loads as follows:

1\. 25 psf (122 kgs/sq. m) wind inward.

2\. 20 psf (98 kgs/sq. m) wind outward.

B. [Environmental Requirements]{.underline}: Provide for expansion and
contraction of system components due to ambient temperature and solar
heat gain. Accommodate movement due to temperature change without
buckling, undue stress on structural elements, reduction of performance,
or other damaging effects.

Anticipated ambient temperature range: Minus 5 to plus 140 degrees F
(minus 21 to plus 60 degrees C).

C. [Performance Requirements]{.underline}: Provide wall system tested
and certified in accordance with AAMA 501:

1\. Air Infiltration: ASTM E283; Maximum 3.85 cubic feet per hour (1.09
cubic meters per hour) per 10.76 square feet (1 square meter) of wall
area, at static air pressure difference of 1.57 lb/ft^2^ (75 Pa).

2\. Water Infiltration: ASTM E331; No uncontrolled water leakage at an
inward static air pressure difference of 8 pounds per square foot (39
kgs/sq. m).

## 1.04 [SUBMITTALS]{.underline}

A. [Product Data]{.underline}: Manufacturer's written technical
information, including performance data, details, and installation
recommendations, which demonstrate that metal panel assembly components
comply with Contract documents.

B. [Shop Drawings]{.underline}: Drawings which show arrangement and
orientation of panels and details of panel joints, corners, custom
profiles, supporting devices, expansion joints and closure trim and
flashing. Show panel system in relation to adjacent construction.

C. [Samples for Selection of Coated Finishes]{.underline}: Coating
manufacturer's full range of color selection data.

D. [Provide certification]{.underline} that products used are
asbestos-free and lead paint-free.

## 1.05 [QUALITY ASSURANCE]{.underline}

A. [Manufacturer Qualifications]{.underline}: A company with a minimum
of 5 years successful experience in the design, fabrication, and
installation of metal panel systems comparable in size and nature to
those required for this project.

B. [Field Measurements]{.underline}: Measure in-place construction on
which panel system will be installed if possible, before fabrication of
panels. If not feasible, fabricate material to allow in-field trimming
of panels to assure proper fit.

> Coordinate field measurements and shop drawings with shop fabrication
> to minimize field adjustments, splicing, and mechanical joints.

C. [Single-Source Responsibility]{.underline}: Furnish basic materials,
including panels, accessories, and fasteners, from a single source
manufacturer. Furnish other products integral with panel system from the
same manufacturer as basic materials, or from a manufacturer approved or
recommended by the basic materials manufacturer.

## 1.06 [WARRANTY]{.underline}

[Warrant coated finish]{.underline} against cracking, peeling,
blistering, chalking for a period of 10 years, without reducing or
otherwise limiting any other rights to correction which the owner may
have under the Contract documents.

# PART 2 - PRODUCTS

## 2.01 [MANUFACTURERS]{.underline}

[Manufactured Metal Panel Systems]{.underline}: Subject to compliance
with all requirements of the Contract documents and compatibility with
adjacent materials, products of the following manufacturers will be
among those considered acceptable:

Butler

ECI Building Components

E.G. Smith Construction Products, Inc.

Flexospan, Inc.

Molenco, Inc.

Robertson, a United Dominion Company

Steelite, Inc.

United Steel Deck, Inc.

Varco Pruden Wall Systems

Walcon Corporation

## 2.02 [MATERIALS]{.underline}

> ["Galvalume" Sheet]{.underline}: ASTM A792; Steel sheet, coated with
> zinc-aluminum alloy.

## 2.03 [WALL SYSTEM 1]{.underline}

A. [System Type]{.underline}: System consisting of wall panels with
exposed fasteners at panel seams, liner panels, and girts, or similar
secondary structural system specified or called out elsewhere in
Contract documents, to attach wall system to primary building structure.

1\. [Metal Panels]{.underline}: "Galvalume" sheet steel, minimum 26 gage
(0.455 mm).

a\. Exterior Finish: Fluoropolymer.

b\. Concealed Finish: Mill finish.

c\. Panel Width (nominal coverage): 36 inches (914 mm).

d\. Panel Profile: Manufacturer's standard.

2\. [Liner Panels]{.underline}: "Galvalume" sheet steel, minimum 24 gage
(0.607 mm) min.

a\. Exterior (exposed) Finish: Fluoropolymer.

b\. Concealed Finish: Mill Finish.

c\. Panel Width 12 inches (305 mm) minimum to 16 inches (406 mm)
maximum.

d\. Panel Profile: Flat face (without ribs) with dimpled texture.

B. [Secondary Structure]{.underline}: Provide subgirts; purlins; and the
like, of galvanized steel and of thickness as shown in structural
specifications or drawings or, if not shown, provide as required to
withstand live and dead loads without excessive deflection, but not less
than 16 gage (1.519 mm).

C. [Fasteners]{.underline}

1\. Threaded Fasteners: Provide manufacturer's standard
corrosion-resistant fasteners of size and type required for intended
application.

2\. Exposed Threaded Fasteners: Provide neoprene or similar elastomeric
washers between heads of fasteners and panels for fasteners which are
exposed to weather.

Finish exposed fastener heads or provide plastic caps to match adjacent
panels.

3\. Rivets: Noncorrosive metal, compatible with metals to be fastened.

D. [Accessories]{.underline}

1\. Flexible Closures: Closed-cell neoprene rubber, formed to fit panel
profile with 5 to 10 percent compression when secured in place.

2\. Sheet Metal Closures, Flashing, and Trim: Comply with requirements
of the Contract documents.

3\. Concealed Sealants and Gaskets: Manufacturer's standard.

4\. Expansion Joints: Manufacturer's standard.

5\. Exposed Joint Sealant: Comply with requirements of the Contract
documents.

## 2.04 [FINISHES]{.underline}

A. [Fluoropolymer Finish]{.underline}: At all sheet metal closures,
flashings and trim.

1\. Pretreatment: Etch and conversion coating, each followed by water
rinse.

2\. Primer: Modified epoxy primer, minimum 0.2 mil (0.00508 mm) thick;
bake to cure.

3\. Finish Coat: 70 percent "Kynar 500" or "Hylar 5000" resin finish
coat, minimum 0.8 mil (0.02032 mm) thick; bake to cure.

> Color: Selected by Sandia Delegated Representative (SDR), after
> Contract award, from manufacturer's standard color selection.

4\. Protection Films: Provide strippable plastic film.

B. [Mill Finish]{.underline}: As-fabricated, welds cleaned and dressed,
exposed welds ground smooth. Remove oil, grease, dirt, and weld spatter
from finished units.

# PART 3 - EXECUTION

## 3.01 [EXAMINATION]{.underline}

A. [Verify that substrate or structural system]{.underline} to receive
work of this section is complete, properly sized, and is laid out
correctly in plan and elevations.

B. [Correct unacceptable substrate installations]{.underline} before
start of metal panel erection.

C. [Coordinate work]{.underline} with other adjacent elements of
building envelope to ensure watertight construction.

## 3.02 [INSTALLATION]{.underline}

A. [General]{.underline}: Install manufactured metal panels in
accordance with panel manufacturer's recommended practices.

1\. Fasten panels to structure as necessary to comply with performance
criteria, allowing for expansion and contraction due to temperature
variations and building movement.

2\. Install gaskets, sealants, closures, and trim as the work progresses
to ensure airtight and watertight performance of the completed
installation.

B. [Wall System Installation]{.underline}

1\. Secondary Structure: Install panel supports per Contract documents,
taking care to align members correctly for proper engagement of panel
attachment system.

2\. Liner Panels: Attach liner panels to secondary structure, taking
care to avoid damage to exposed surfaces.

3\. Exposed Fastener Wall Panel System Installation: Fasten through
panel laps to supports. Use fasteners with finished heads or provide
plastic caps to match adjacent panel finish.

4\. Coordinate wall panel work with installation of doors, windows, and
other elements of the wall to ensure continuous weathertight enclosure.

## 3.03 [CLEANING AND PROTECTION]{.underline}

A. [Remove protective coverings]{.underline} from prefinished metal
surfaces after each panel is installed.

B. [Touch up or refinish]{.underline} marred or abraded surfaces.
Replace damaged units and units which cannot be refinished to the SDR's
satisfaction.

C. [Clean finished surfaces]{.underline} using techniques and materials
recommended by panel manufacturer. Protect cleaned surfaces until
project completion.

END OF SECTION