NOTE ** This section is based on NorCore(R) plastic honeycombed core materials, as manufactured by Norfield Corporation, located at the following address:
NOTE **
NOTE ** Norfield Corporation
NOTE ** 36 Kenosia Avenue
NOTE ** Danbury, CT 06810
NOTE **
NOTE ** General Information, Technical Support: 203-792-5110
NOTE ** FAX: 203-797-0390
NOTE **
NOTE ** The Norcore product is a state-of-the-art plastic honeycomb configured core material developed and produced to serve as a lightweight, structurally rigid substrate. Various surfacing materials can be bonded to Norcore, resulting in composite panels of superior strength, flatness, moisture resistance, thermal resistance, shock resistance, sound reduction, and overall durability.
NOTE **
NOTE ** SECTION 07430 - COMPOSITE PANELS, Copyright 1996, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items below not required for project. NorCore panels can be surfaced with many types of building materials including lightweight stone, concrete, solid polymer surfacing material, brick, glass, metals, plastic, and wood; insert surfacing material to be used in the following paragraphs as appropriate. Consult manufacturer to discuss requirements of your project.
A. Exterior application of __________-surfaced composite panels.
B. Interior application of __________-surfaced composite panels.
C. Panel edging.
D. Concealed connection and anchorage hardware.
E. Structural adhesives and sealants.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this project; add others as required.
A. Section 05400 - Cold Formed Metal Framing: Structural support for exterior composite panels.
B. Section 07620 - Sheet Metal Flashing and Trim: Flashing for exterior composite panels.
C. Section 07900 - Joint Sealers: Sealant at panel joints and edges.
D. Section 09260 - Gypsum Board Assemblies: Substrate for interior composite panels.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not actually required by the text of the edited section.
A. AAMA 501.1 - Standard Test Method for Metal Curtain Walls for Water Penetration Using Dynamic Pressure; American Architectural Manufacturers Association.
B. ASTM C 365 - Standard Test Method for Flatwise Compressive Strength of Sandwich Cores.
C. ASTM C 384 - Standard Test Method for Impedance and Absorption of Acoustical Materials by the Impedance Tube Method.
D. ASTM C 393 - Standard Test Method for Flexural Properties of Flat Sandwich Constructions.
E. ASTM C 518 - Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.
F. ASTM D 570 - Standard Test Method for Water Absorption of Plastics.
G. ASTM D 790 - Standard Test Methods for Flexural Properties of Plastics and Electrical Insulating Materials.
H. D 3029 - Standard Test Method for Impact Resistance of Flat Rigid Plastic Specimens by Means of a Tup (Falling Weight).
I. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
J. ASTM E 283 - Standard Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.
K. ASTM E 330 - Standard Test Method for Structural Performance of Exterior Windows, Curtain Walls, and Doors By Uniform Static Air Pressure Difference
L. ASTM E 331 - Standard Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors By Uniform Static Air Pressure Difference
M. UL 94 - Tests for Flammability of Plastic Materials for Parts in Devices and Appliances
1.4 PERFORMANCE REQUIREMENTS
NOTE ** This article is generally applicable only to exterior curtain wall systems. Delete the entire article, or modify the requirements for installations that are more or less critical.
NOTE **
NOTE ** The specific performance requirements included below are typical examples only. Note that different core materials, core thicknesses, and skin materials can be used to achieve very different performance levels. Contact manufacturer for additional information.
A. Structural: Tested per ASTM E 330 at a design pressure of ____ psf, with maximum deflection of L/180 and certified to be without permanent deformation or structural failures.
B. Air Infiltration: Not more than 0.06 cfm per square foot of wall area, when tested at 1.57 psf per ASTM E 283.
C. Water Infiltration: No uncontrolled water penetration under static pressure when tested per ASTM E 331 at 6.24 psf minimum for fifteen minutes.
D. Dynamic Water Penetration: No uncontrolled water penetration when tested at ___ mph per AAMA 501.1.
E. Fire: Flame spread 10 maximum; smoke developed 195 maximum; per ASTM E 84.
F. Toxicity Evaluation: No more toxic than Douglas fir, per University of Pittsburgh Test Method.
G. Multi-Story Fire Evaluation: Meet acceptance criteria of UBC 17-6.
1.5 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Specifications, installation instructions, and manufacturer's recommendations for protection and cleaning of completed installation.
C. Shop Drawings: Show overall layout of panel system, indicating joint locations and sizes. Include complete details of support and attachment systems, in addition to details for corners, panel meeting conditions, and edges.
D. Selection Samples: Color charts or actual samples illustrating full range of available surface finishing materials.
E. Verification Samples: 12 x 12 inch sample panels in thickness and finish specified, including clips, anchors, and other accessories to illustrate finished appearance of composite panels.
F. Test Data: Submit summary of independent testing laboratory report on results of performance tests, indicating compliance with specified performance levels.
G. References: Submit references specified under Quality Assurance.
1.6 QUALITY ASSURANCE
A. Manufacturer Qualifications: Company with a minimum of five years of demonstrated capacity to produce composite reinforced panels of the type specified in this section and meeting the performance requirements included.
1. Company shall have completed independent laboratory tests illustrating manufacturer's ability to provide panels of performance levels specified herein.
2. References from five or more projects of similar size and scope completed within the past three years.
B. Installer Qualifications: Experienced installers trained by manufacturer of composite panels.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Protection: Protect finish of panels in accordance with instructions of panel manufacturer.
B. Delivery and Handling: Package composite panels for protection against transportation damage. Exercise care in unloading and storing panels to prevent bending, warping, and surface damage.
C. Storage: Store flat under cover until project installation begins.
1.8 WARRANTY
A. Provide manufacturer's standard warranty against defects in the panel or delamination of panel components.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. The design is based on NorCore(R) composite panels as manufactured by Norfield Corporation; 356 Kenosia Avenue; Danbury, CT 06810. Telephone: 203-792-5110 for general information and technical support; 203-797-0390.
B. Substitutions: Comply with requirements of Section 01600.
NOTE ** Delete the paragraph above or below.
C. Substitutions are not permitted.
2.2 MATERIALS
NOTE ** If performance requirements have been specified, the first paragraph below would normally be used. If second paragraph is used, insert core material and thickness requirement, if appropriate - NorCore panels are available in thicknesses from 1/4 inch to 3 inches; obtain required performance characteristics for specific core type and thickness from manufacturer. In addition to the materials listed below, others are possible.
NOTE **
NOTE ** ABS is used for its high rigidity, high impact strength and toughness, excellent surface hardness, and dimensional stability.
NOTE **
NOTE ** Polypropylene exhibits high chemical resistance.
NOTE **
NOTE ** Polycarbonate is UV stabilized, has excellent light transmission, heat resistance, and self-extinguishing properties.
NOTE **
NOTE ** High-impact polystyrene is a general purpose core material.
A. Core Material: Honeycomb thermoplastic material engineered by manufacturer to meet performance requirements when laminated with specified face material.
B. Core Material: ________________ sheet expanded to form smooth-faced honeycomb panel ___ inches thick, conforming to the following:
1. Weight: __________ pounds per square foot, nominal.
2. Flexural strength, in accordance with ASTM C 393 and ASTM D 790: _____________ pounds per square inch.
3. Flexural modulus, in accordance with ASTM C 393 and ASTM D 790: _____________ pounds per square inch.
4. Compressive strength, in accordance with ASTM C 365: _____________ pounds per square inch.
5. Water absorption, in accordance with ASTM D 570: ____ percent by weight.
6. Thermal resistance, in accordance with ASTM C 518: _____________ pounds per square inch.
7. Sound transmission loss, in accordance with ASTM C 384: ______ decibels.
8. Impact resistance and deflection, in accordance with ASTM D 3029: ______ inch.
9. Fire resistance, in accordance with ASTM E 84 and UL 94: _____________.
10. Wind load capacity: _____________ pounds per square foot.
NOTE ** If panels are to have stone facing, select the paragraph below and complete description.
C. Panel Facing: Stone veneer; __________ natural stone, _______ color, ___ inch thick +/- ___ inch, with ________ finish.
NOTE ** If panels are to be faced with metal, select one of the paragraphs below, complete metal facing description, and delete the others.
D. Panel Facing: _________________, _______ inch thickness, in finish to match Architect's sample.
E. Panel Facing: _________________, _______ inch thickness, ______________ finish.
NOTE ** Specify wall panel edging material, if required, in one of the following two paragraphs; delete both if not required.
F. Panel Edging Material: ______________, __________ inch thick.
G. Pnnanel Edging Material: Same material, thickness, and finish as face material.
2.3 ACCESSORIES
A. Connection and Anchorage Hardware: Provide all hardware for connecting composite panels to substrate, including kerf clips, z-clips, angle clips, and threaded inserts, as detailed in approved shop drawings.
1. Provide hardware of sufficient size, thickness, and strength to support panels securely against applied loads.
2. Conceal all fasteners.
NOTE ** Delete paragraph below if not required.
B. Structural Silicone: Provide structural silicone for support of composite panels as specified in Section 07900.
C. Joint Sealers: Provide joint sealers for panel to panel joints and edge conditions as specified in Section 07900.
D. Adhesives: Types recommended by manufacturer for project conditions.
2.4 FABRICATION
A. Shop fabricate composite panels by laminating face materials to structural plastic core, producing composite panels with performance characteristics not less than those specified.
B. Properties of Finished Panels:
1. Overall thickness: As required to achieve structural properties.
2. Overall thickness: ______ inches.
3. Panel size: 4 by 8 feet.
4. Panel size: 4 by 10 feet.
5. Panel size: 5 by 10 feet.
6. Panel size: As indicated on the drawings.
7. Dimensional tolerance: Plus or minus 1/16 inch in all directions, including diagonally.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verify that conditions are acceptable for installation of composite panels before beginning the work; do not proceed until unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Install composite panels in accordance with the instructions and recommendations of the panel manufacturer, except where more stringent requirements are set forth in the drawings and specifications.
B. Install composite panels plumb, level, and true to line, in accordance with approved shop drawings and with all fasteners concealed.
C. Installation Tolerances: Maximum deviation from line or plane: 1/8 inch in 10 feet, non-cumulative.
D. Joint Sealers: Install joint sealers in accordance with approved shop drawing details and to comply with requirements of Section 07900.
3.3 ADJUSTING AND CLEANING
A. Cleaning: Clean all dirt, adhesives, and joint sealer from panels and adjacent surfaces, using detergents or solvents as appropriate to surfaces and as approved by the composite panel manufacturer.
B. Adjusting: Touch up minor mars and chipped surfaces to match adjacent undamaged areas, to the approval of the Architect. Replace damaged panels that cannot be touched up to achieve a satisfactory appearance.
