W9123612B00100003.pdf

PN59005, Joint Base Langley-Eustis, Aviation Training Facility

11 April 2012

The solicitation is amended as follows:

The following items represent changes to the contract scope. These changes apply across the entire solicitation.

SPECIFICATIONS ARE AMENDED AS FOLLOWS:

1. SPECIFICATION SECTION 01 32 01.00 50 - Delete the first sentence of Paragraph 3.2 and replace with the following: "The Contractor shall designate a scheduling representative who shall be responsible for the preparation and submittal of the entire NAS project schedule including all items specified below and revisions to the schedule or supplemental completion schedules, as applicable or directed by the Contracting Officer."

2. SPECIFICATION SECTION 01 35 26 – Delete Paragraph 1.5.1.2 in its entirety.

In Paragraph 1.5.2.2, delete “Certified Safety Professional (CSP)”, “Certified Industrial Hygienist(CIH)”, “Associate Safety Professional (ASP)” and “Certified Safety Trained Supervisor (STS) and/or”. (i.e. – The minimum credentials are those of a Certified Construction Health & Safety Technician (CHST).)

3. SPECIFICATION SECTION 01 35 29.13 – In Paragraphs 1.9.1.1.a. and 1.9.2.1.a., delete “underground storage tank” and replace with “hazardous materials”.

4. SPECIFICATION SECTION 07 21 13 – Add the following note to Paragraph 2.1.1: “Low-sloped roofs should meet R-19 minimum and other roofs should meet R-30.”

DRAWINGS ARE AMENDED AS FOLLOWS:

5. DRAWING AE602 - For partitions S6R and S6T, change “1/2” SOUNDBARRIER FIBER BOARD” to “1/2” 440 SOUND BARRIER BY

HOMASOTE OR ½” REGULAR DRYWALL ATTACHED WITH RESILIENT

CHANNELS AT 24” O.C.”.

6. DRAWING S001 - Delete and replace with revised Sheet S001.

7. DRAWING SH304 - Delete and replace with revised Sheet SH304.

JBLE ATF 59005

SECTION 08 45 23

INSULATED TRANSLUCENT FIBERGLASS WALL PANEL ASSEMBLIES

05/11

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN ARCHITECTURAL MANUFACTURERS ASSOCIATION (AAMA)

AAMA 2604 High Performance Organic Coatings on Aluminum Extrusions and Panels.

ASTM INTERNATIONAL (ASTM)

ASTM C 297 Tensile Strength of Flat Sandwich Constructions in Flatwise Plane.

ASTM D 635 Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position.

ASTM D 1002 (2010) Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)

ASTM D 1037 Evaluating tensil bond strength Properties of Panel Materials.

ASTM D 1929 Ignition Properties of Plastics.

ASTM D 2244 Calculation of Color Differences from Instrumentally Measured Color Coordinates.

ASTM E 72 Conducting Strength Tests of Panels for Building Construction.

ASTM E 283 Determining the Rate of Air Leakage through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.

ASTM E 330 (2002; R 2010) Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference

ASTM E 331 Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

SECTION 08 45 23 Page 1

UNDERWRITERS LABORATORIES (UL)

UL 723 (2008) Test for Surface Burning Characteristics of Building Materials

UL 972 Impact - Resisting Glazing Material.

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Product Data; G, DO

Submit manufacturer's data sheets on each product to be used, including:

Preparation instructions and recommendations.

Storage and handling requirements and recommendations.

Installation methods.

Maintenance instructions.

SD-02 Shop Drawings; G, DO

Include plans, elevations, sections, and details, indicating dimensions, tolerances, profiles, connections, provisions for expansion and contraction, drainage, flashing, finish, and glazing.

SD-03 LEED Submittals; G

List of proposed materials with recycled content. Indicate post-consumer recycled content and pre-consumer recycled content for each product having recycled content.

Product data and certification letter indicating percentages by weight of post-consumer and pre-consumer recycled content for products having recycled content.

Substitutions, changes, or any modification to the design or products in meeting the LEED criteria will not be allowed.

Provide computer simulation (RADIANCE) that demonstrates that 75% or more of all regularly occupied spaces achieve daylight illuminance levels of a minimum of 25 footcandles (fc) and a maximum of 500fc in a clear sky condition on September 21 at 9AM and 3PM.

SD-04 Daylight Modeling; G, DC

Daylighting Autonomy report showing that the proposed translucent daylighting system will provide___lux in day lit areas for an average of ___% of the daylight hours for the entire year.

SD-05 Test Reports; G, DO

Submit certified test reports from a qualified independent testing agency, indicating skylights and wall systems comply with specified requirements, based on testing of current products.

SECTION 08 45 23 Page 2

Submit results from the following tests:

Flame spread and smoke development, UL 723 - Submit UL card.

Burn extent, ASTM D 635.

Self-ignition, ASTM D 1929.

Color change, ASTM D 2244 Impact strength, exterior face sheets, UL 972.

Accelerated aging, ASTM D 1037.

Bond strength, ASTM C 297and ASTM D 1002.

Air infiltration, ASTM E 283.

Water penetration, ASTM E 331.

Uniform load deflection, ASTM E 330.

Panel Insulating U-factor, NFRC 100.

Certification of U factor, NFRC.

Solar Heat Gain Co-efficient, NFRC 200.

Condensation Resistance Factor, AAMA 1503.

International Building Code Evaluation Report

SD-06 Verification Samples; G

For each finish product and glazing material specified, submit one panel sample, 14" x 28" minimum 12 inches wide. Factory finished Aluminum: 5'0" long sections, representing actual product and color.

1.3 STRUCTURAL PERFORMANCE REQUIREMENT

The insulated translucent fiberglass sandwich panel system shall meet structural requirements as follows:

1.3.1 Force Protection:

Force Protection Blast load requirement: Portions of the facility not meeting the required standoff distance, are exposed to blast load requirements of UFC 4-010-01. Where indicated as ATFP panels, panels are to meet "Low Level of Protection" requirements refer to Table 2-1.

1.3.2 Structural Design Loads:

Maximum allowable deflection under maximum design loads is limited to L/60.

1.4 QUALITY ASSURANCE

1.4.1 Manufacturer Qualifications:

Manufacturer to have minimum ten years documented experience in the fabrication of wall systems of the type required for this project and be capable of providing field service representation during installation.

1.4.2 Panel system:

1. Panel system must be listed by an ANSI accredited Evaluation Service, which requires quality control inspections and fire, structural and water infiltration testing of sandwich panel systems by an accredited agency.

2. Quality control inspections shall be conducted at least once each year and shall include manufacturing facilities, sandwich panel

SECTION 08 45 23 Page 3 components and production sandwich panels for conformance with AC177 "Translucent Fiberglass Reinforced Plastic (FRP) Faced Panel Wall, Roof and Skylight Systems" as issued by the ICC-ES.

1.4.3 Single Source:

Obtain each type of metal wall and liner panels, clips, closures and other accessories from the standard products of the single source from a single manufacturer to operate as a complete system for the intended use.

1.4.4 Performance Requirements:

The manufacturer shall be responsible for the configuration and fabrication of the complete panel system.

1.4.4.1 Panel system:

1. panel system shall have less than 0.01cfm/ft² air leakage by ASTM E 283 at 6.24 PSF 50 mph and no water penetration by ASTM E 331 at 10 psf and structural testing by ASTM E 330.

1.4.5 Installer Qualifications:

Installer to have minimum five years documented experience in the work of this section who has specialized in the installation of work similar to that required for this project and is approved by the manufacturer.

1.4.6 Preinstallation Meeting:

Convene a preinstallation meeting 2 weeks before start of installation of wall systems. Require attendance of parties directly affecting work of this section, including Contractor, Architect and installer. Review requirements for preparation, installation, cleaning, protection, and coordination with other work.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery:

Deliver materials to site in manufacturer's original, undamaged condition, with labels clearly identifying product name, manufacturer, and location of installation.

1.5.2 Storage:

Store products on edge above the floor and under cover in a clean, dry area until ready for installation.

1.5.3 Handling:

Protect materials and finish from damage during handling and installation.

1.6 SEQUENCING

a. Ensure that locating templates and other information required for installation of products of this section are furnished to affected trades in time to prevent interruption of construction progress.

SECTION 08 45 23 Page 4

1.7 PROJECT CONDITIONS

Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.

1.8 WARRANTY

Submit manufacturer's and installer's written warranty agreeing to repair or replace panel system work which fails in materials or workmanship within 2 years of the date of delivery. The warranty is to be issued directly to the Government. The warranty is to provide that if within the warranty period the translucent panel system shows evidence of excess weathering resulting from defective materials, correction of the defective workmanship is to be the responsibility of the translucent panel system manufacturer. The installer is responsible for weather tightness of the installation.

PART 2 PRODUCTS

2.1 PANEL COMPONENTS

2.1.1 Face Sheets:

2.1.1.1 Translucent faces:

Manufactured from glass fiber reinforced thermoset resins, formulated specifically for architectural use.

a. Thermoplastic (e.g. polycarbonate, acrylic) faces are not acceptable.

b. Face sheets shall not deform, deflect or drip when subjected to fire or flame.

2.1.1.2 Face sheets:

Face sheets shall not delaminate when exposed to 200°F for 30 minutes per IBC or 300°F for 25 minutes.

2.1.1.3 Interior face sheets:

a. Flamespread: Underwriters Laboratories (UL) listed, which requires periodic unannounced retesting, with flamespread rating no greater than 50 and smoke developed no greater than 250 when tested in accordance with UL 723. Submit UL Card

b. Burn extent by ASTM D 635 shall be no greater than 1 inch(Class

CC1).

2.1.1.4 Exterior face sheets:

a. Color stability: Full thickness of the exterior face sheet shall not change color more than 3 CIE Units DELTA E by ASTM D 2244 after 5 years outdoor South Florida weathering at 5 degrees facing south, determined by the average of at least three (3) white samples with and without a protective film or coating to ensure long-term color

SECTION 08 45 23 Page 5 stability. Color stability shall be unaffected by abrasion or scratching.

b. Abrasion and Erosion Resistance: Exterior face shall have a permanent glass erosion barrier embedded beneath the surface to provide long-term resistance to reinforcing fiber exposure. Exterior face surface loss shall not exceed .7 mils and 40 mgs when tested in accordance with ASTM D 4060 employing CS17 abrasive wheels at a head load of 500 grams for 1000 cycles.

c. Strength: Exterior face sheet shall be uniform in strength, impenetrable by hand held pencil and repel an impact minimum of 70ft.

lbs. without fracture or tear when impacted by a 3-1/4inch diameter, 5

lb. free-falling ball per UL 972.

2.1.1.5 Appearance:

a. Exterior face sheets: Smooth, 0.070 inch thick and White in color.

b. Interior face sheets: Smooth, 0.045 inch thick and WHITE in color.

c. Face sheets shall not vary more than +/- 10% in thickness and be uniform in color.

2.1.2 Grid Core:

2.1.2.1 Thermally broken I-beam grid core:

Thermally broken I-beam grid core shall be of 6063-T6 or 6005-T5 alloy and temper with provisions for mechanical interlocking of muntin-mullion and perimeter. Width of I-beam shall be no less than 7/16 inch.

2.1.2.2 I-beam Thermal break:

Minimum 1 inch, thermoset. Urethane poured and de-bridged is not acceptable

2.1.3 Laminate Adhesive:

1. Heat and pressure resin type adhesive engineered for structural sandwich panel use, with minimum 25-years field use. Adhesive shall pass testing requirements specified by the International Code Council Acceptance Criteria for Sandwich Panel Adhesives.

2. Minimum tensile strength of 750 PSI when the panel assembly is tested by ASTM C 297 after two (2) exposures to six (6) cycles each of the aging conditions prescribed by ASTM D 1037.

3. Minimum shear strength of the panel adhesive by ASTM D 1002 after exposure to four (4) separate conditions:

a. 50% Relative Humidity at 68° F: 540 PSI

b. 182° F: 100 PSI

c. Accelerated Aging by ASTM D 1037 at room temperature: 800 PSI

d. Accelerated Aging by ASTM D 1037 at 182° F: 250 PSI

2.2 PANEL CONSTRUCTION

1. Provide sandwich panels of flat fiberglass reinforced translucent

SECTION 08 45 23 Page 6 face sheets laminated to a grid core of mechanically interlocking thermally broken I-beams. The adhesive bonding line shall be straight, cover the entire width of the I-beam and have a neat, sharp edge.

a. Thickness: 2 3/4".

b. Light transmission: __15__%.

c. Solar heat gain coefficient 0.23.

d. U- factor by NFRC certified laboratory: 4 inch thermally broken I-beam 0.08, 0.22 to 0.25

e. Complete insulated panel system shall have NFRC certified U-factor of _0.28____.

f. Grid pattern: Nominal size SEE ELEVATIONS

2. Panels shall deflect no more than 1.9" at 30 psf in 10'-0" span without a supporting frame by ASTM E 72.

3. Panels shall withstand 1200°F fire for minimum one (1) hour without collapse or exterior flaming.

4. Thermally broken panels:

a. Minimum Condensation Resistance Factor of 80 by AAMA 1503 measured on the bond line.

2.3 BATTENS AND PERIMETER CLOSURE SYSTEM

2.3.1 Closure system:

Extruded aluminum 6063-T6 and 6063-T5 alloy and temper clamp-tite screw type closure system.

(or OPTIONAL 1. Thermally broken perimeter system shall have a urethane bridge.)

2.3.2 Sealing tape:

Manufacturer's standard, pre-applied to closure system at the factory under controlled conditions.

2.3.3 Fasteners:

300 series stainless steel screws for aluminum closures, excluding final fasteners to the building.

2.3.4 Finish:

Exposed aluminum to be manufacturer's factory applied finish that meets the performance requirements of AAMA 2604. (or Mill)

1. Color to be selected from manufacturer's standard colors.

SECTION 08 45 23 Page 7

PART 3 EXECUTION

3.1 EXAMINATION

General Contractor to examine substrates, supporting structure and installation conditions. Do not proceed with panel erection until unsatisfactory conditions have been corrected.

3.2 PREPARATION

3.2.1 Metal Protection:

1. Where aluminum will contact dissimilar metals, protect against galvanic action by painting contact surfaces with primer or by applying sealant or tape recommended by manufacturer for this purpose.

2. Where aluminum will contact concrete or masonry, protect against corrosion by painting contact surfaces with bituminous paint or method recommended by manufacturer.

3. Where aluminum will contact pressure treated wood, separate dissimilar materials by methods recommended by manufacturer.

3.3 INSTALLATION

1. Install the panel system in accordance with the manufacturer's installation recommendations and approved shop drawings.

a. Anchor component parts securely in place by permanent mechanical attachment system.

b. Accommodate thermal and mechanical movements.

c. Set perimeter framing in a full bed of sealant compound, or with joint fillers or gaskets to provide weather-tight construction.

2. Install joint sealants at perimeter joints and within the panel system in accordance with manufacturer's installation instructions.

3.4 CLEANING

Clean the panel system inside and outside, immediately after installation, according to manufacturer's written recommendations. Collect and place scrap/waste materials in containers. Promptly dispose of demolished materials. Do not allow demolished materials to accumulate on-site;

transport demolished materials from government property and legally dispose of them.

-- End of Section --

SECTION 08 45 23 Page 8

2.1.3 Laminate Adhesive: