SECTION 084400
GLAZED CURTAIN WALLS (400SERIES)
PART1GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General Conditions, Division01General Requirements, and other applicable specification sections in the Project Manual apply to the work specified in this Section.
1.2 SUMMARY
A. Scope: Provide design and engineering, labor, material, equipment, related services, and supervision required, including, but not limited to, manufacturing, fabrication, erection, and installation for glazed curtain walls as required for the complete performance of the work, and as shown on the Drawings and as herein specified.
B. Section Includes: This Section includes, but shall not be limited to, glazed curtain wall systems to receive glazing, including, but not limited to, embedded items and connections for attaching systems to building structure as indicated on the Drawings. Systems shall have thermal break materials.
1.3 REFERENCES
A. General: The publications listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by the basic designation only. The edition/revision of the referenced publications shall be the latest date as of the date of the Contract Documents, unless otherwise specified.
Retain standards below which are referenced in this Section.
B. American Architectural Manufacturers Association (AAMA):
1. AAMA501, "Methods of Test for Exterior Walls."
2. AAMA501.2, "Methods of Test for Exterior WallsField Check of Metal Storefronts, Curtain Walls, and Sloped Glazing Systems for Water Leakage."
3. AAMA501.4, "Recommended Static Test Method for Evaluating Curtain Wall and Storefront Systems Subjected to Seismic and Wind Induced Interstory Drifts and Recommended Dynamic Test Method For Determining the Seismic Drift Causing Glass Fallout from a Wall System (Combined Document).”
4. AAMA501.5, “Test Method for Thermal Cycling of Exterior Walls.”
5. AAMA611, "Voluntary Specifications for Anodized Architectural Aluminum (Revised).”
6. AAMA1503, "Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors, and Glazed Wall Sections.”
7. AAMA2605, "Voluntary Specification, Performance Requirements, and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels."
C. American Society of Heating, Refrigerating, and AirConditioning Engineers, Inc. (ASHRAE):
1. ASHRAE55, "Thermal Environmental Conditions for Human Occupancy.”
2. ASHRAE62.1, "Ventilation for Acceptable Indoor Air Quality."
D. ASTM International (ASTM):
1. ASTMA36/A36M, "Standard Specification for Structural Steel."
2. ASTMA123/A123M, "Standard Specification for Zinc (HotDip Galvanized) Coatings on Iron and Steel Products."
3. ASTMB209/B209M, "Standard Specification for Aluminum and AluminumAlloy Sheet and Plate."
4. ASTMB221/B221M, "Standard Specification for Aluminum and AluminumAlloy Extruded Bars, Rods, Wire, Shapes, and Tubes."
5. ASTMB308/B308M, "Standard Specification for AluminumAlloy6061T6 Standard Structural Shapes."
6. ASTMB429, "Standard Specification for AluminumAlloy Extruded Structural Pipe and Tube."
7. ASTME90, "Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions.”
8. ASTME283, "Standard Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Difference Across the Specimen."
9. ASTME413, "Classification for Rating Sound Insulation."
10. ASTME1332, “Standard Classification for Determination of OutdoorIndoor Transmission Class.”
E. National Association of Architectural Metal Manufacturers (NAAMM):
1. NAAMMMFM, "Metal Finishes Manual."
F. South Coast Air Quality Management District (SCAQMD):
1. SCAQMDRule#1168, “Adhesive and Sealant Applications,” including most recent amendments.
G. SSPC: The Society for Protective Coatings (SSPC):
1. SSPCPaint20, "Paint Specification No.20 ZincRich Primers (Type I, 'Inorganic', and TypeII, 'Organic').”
1.4 SYSTEM DESCRIPTION
A. General: Provide the manufacturer's glazed curtain wall systems, adapted to the application indicated, and modified as required to comply with performance requirements and materials specified, as demonstrated by testing the manufacturer's corresponding systems according to test methods indicated.
B. Performance Requirements:
Insert applicable values in subparagraph below.
1. Wind Loads: Provide curtain wall system, including, but not limited to, anchorage, capable of withstanding wind load design pressures of [____]psf ([____Pa]).
2. Air Infiltration: Not more than 0.060cfm (0.00003m3/s) per square foot (0.09m2) (projected area of module) at 6.24psf (299Pa) static air pressure differential when tested in accordance with ASTME283.
3. Water Leakage: There shall be no uncontrolled water entry at 12psf (575Pa) test pressure as defined in AAMA501.
4. Structural Performance: Structural performance shall be based on a maximum allowable deflection of L/175 of the clear span for spans up to 13’6” (4115mm) or L/240 of clear span plus 1/4inch (6mm) for spans greater than 13’6” (4115mm), or an amount that restricts edge deflection of individual glazing lites of glass to 3/4inch (19mm), whichever is smaller. The system shall perform to those criteria under the wind load specified for this Project.
5. Thermal Cycling: There shall be no buckling, stress on glass, edge seal failure, excess stress on structure, anchors and fasteners, or reduction in performance when tested in accordance with AAMA501.5 at a temperature range of 0degreesF (18degreesC) to 180degreesF (82degreesC).
6. Thermal Transmittance: Thermal transmittance due to conduction (Uc) shall not be greater than 0.60Btu/hour/ft2/°F per AAMA1503. Condensation resistance factor (CRF) shall not be less than 68 frame and 59 glass (clear) per AAMA1503.
7. Seismic Cycling: There shall be no life/safety type failures (glass breakage, anchor failures, structural damage, etc.) when tested in accordance with AAMA501.4, seismic test (lateral cycling).
8. Sound Rating: The system shall have a sound transmission class (STC) rating of 32 and an outdoorindoor transmission class (OITC) rating of 26 when tested in accordance with ASTME90, ASTME413 and ASTME1332.
C. Thermal Performance Summary:
System / NFRC UFactor(Btu/hour/square foot/°F) / SHGC Range / AAMA UFactor
(Btu/hour/square foot/°F) / CRF
Tested / Modeled Range / Tested
400 Series Curtain Wall / 0.36 / 0.36 to 0.56 / 0.34 to 0.65 / 0.38 / 71 frame, 75 glass
Unless noted, tested performance data listed is based on Viracon 1inch overall VE1-2M insulating glass (lowe on surface No.2), 1/2inch argon with stainless steel spacer. Modeled NFRC performance data range listed is based on various clear substrate glass configurations, with validation test per NFRC requirements. Contact Tubelite for project specific thermal performance modeling. Unless specifically noted, results do not apply to dualglazed or tripleglazed products with between glass blinds. Contact Tubelite for test data on these products.
1.5 SUBMITTALS
A. General: See Section013300Submittal Procedures.
B. Product Data: Submit product data showing material proposed. Submit sufficient information to determine compliance with the Drawings and Specifications. Product data shall include, but shall not be limited to, recommendations and standard details, fabrication, finishing, accessories, and other components of the work.
C. Shop Drawings: Submit shop drawings for each product and accessory required. Include information not fully detailed in manufacturer’s standard product data, including, but not limited to, wall elevations and detail sections of every typical composite member, anchors, joint system, expansion provisions, finishes, and other components.
D. Samples:
1. Submit samples for initial color selection. Submit samples of each specified finish. Submit samples in form of manufacturer’s color charts showing full range of colors and finishes available. Where finishes involve normal color variations, include samples showing the full, range of variations expected.
Delete above if colors preselected and specified or scheduled. Retain below with or without above.
2. Submit samples for verification purposes. Submit four samples of each finish, on 12inch (305mm) long extrusions or 12inch (305mm) square sheets, of the alloys to be used for the work. Where color and texture variations are to be expected, include two or more units in each sample to show the range of such variations.
E. Quality Control Submittals:
1. Design Data: Submit design calculations for the glazed curtain wall system and the connections for attaching them to the structure. Show that maximum stresses and deflections do not exceed specified performance requirements under full design loading. The design data shall be signed and sealed by the professional engineer. Only the loading on the structure at the connections will be reviewed.
2. Test Reports: Submit two copies each, plus the number the Contractor wants returned, of tests. Submit test reports indicating compliance of systems with requirements of these Specifications.
a. Submit a report of inspections of connections and welds.
b. Submit a report indicating compliance with coatings test program indicated in this Section.
3. Certificates:
a. Submit designer's certification that they:
1) Are a structural engineer registered in the State where the Project is located. Include registration number.
2) Are the designer of the glazed curtain wall system and the connections for attaching them to the structure.
3) Have coordinated the design of the glazed curtain wall system and the connections for attaching them to the structure with the design of the structure.
4) Have visited the site and that to the best of their information, knowledge, and belief the glazed curtain wall system has been installed in accordance with their design.
b. Submit manufacturer's certification that the Installer is approved.
Retain below for project requiring LEED certification. Besides the LEED credits referenced below, other LEED credits might apply. Contact the Project’s LEED Consultant.
F. LEED Submittals: Submittals that are required to comply with requirements for LEED certification include, but shall not be limited to, the following:
1. Recycled Content Materials: Provide product data and certification letter indicating percentages by weight of postconsumer and preconsumer recycled content for products having recycled content. Include statement indicating costs for each product having recycled content.
Above applies to Credit MR4. Below applies to Credit MR5.1 and MR5.2.
2. Regional Materials: Provide product data for regional materials indicating location and distance from the Project of material manufacturer and point of extraction, harvest, or recovery for each raw material. Distance shall be within 500miles (805Km) of the Project Site. Include statement indicating cost for each regional material and, if applicable, the fraction by weight that is considered regional.
3. Increased Ventilation: Provide documentation confirming what measures have been taken to provide additional outdoor air ventilation to improve indoor air quality for improved occupant comfort, well being and productivity.
Above applies to Credit EQ2. Below applies to Credits EQ4.1 (adhesives and sealants) and EQ4.2 (paints and coatings).
4. LowEmitting Materials: Submit certification by the manufacturer confirming that products (i.e., adhesives, sealants, paints, coatings, etc.) meet or exceed the volatile organic compound (VOC) limits set by specific agencies or other requirements as outlined in LEED Green Building Rating System. VOC limits shall be clearly stated in the submittal.
5. Controllablity of Systems, Thermal Comfort: Provide documentation confirming that Project design provides a high level of thermal comfort system control by individual occupants or by specific groups in multioccupant spaces (i.e., classrooms or conference areas) to promote the productivity, comfort, and wellbeing of building occupants.
Above applies to Credit EQ6.2. Below applies to Credit EQ7.1.
6. Thermal Comfort Design: Submit certification by the manufacturer confirming that the HVAC systems and the building envelope have been designed to meet the requirements of ASHRAE55. Demonstrate design compliance in accordance with the LEED Green Building Rating System.
7. Daylight 75Percent of Spaces: Submit certification by the manufacturer confirming that products maximize interior daylighting.
Above applies to Credit EQ8.1. Below applies to Credit EQ8.2.
8. Views for 90Percent of Spaces: Submit certification by the manufacturer confirming that products provide for the building occupants a connection between indoor spaces and the outdoors through the introduction of daylight and views into the regularly occupied areas of the building.
G. Operation and Maintenance Manuals: Furnish complete operation and maintenance manuals describing the materials, devices, and procedures to be followed in operating, cleaning, and maintaining the work. Include manufacturer's brochures and parts lists describing the actual materials used in the work, including, but not limited to, metal alloys, finishes, glass, sealants, and other major components. Assemble operation and maintenance manuals for component parts into single binders identified for each system.
1.6 QUALITY ASSURANCE
A. Qualifications:
1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of glazed curtain walls of types and sizes required, and whose products have been in satisfactory use in similar service for a minimum of five years.
2. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of successful installation experience with projects utilizing glazed curtain walls similar in type and scope to that required for this Project, and shall be approved by the manufacturer.
3. Engineer Qualifications: The engineer shall be a professional engineer legally authorized to practice in the jurisdiction where the Project is located and experienced in providing engineering services of the kind indicated that have resulted in the installation of products similar to this Project in material, design, and extent, and that have a record of successful inservice performance.
B. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances, and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary approvals from such authorities.
C. MockUps: Prior to installation of the work, fabricate and erect mockups for each type of finish and application required to verify selections made under sample submittals and to demonstrate aesthetic effects as well as qualities of materials and execution. Build mockups to comply with the following requirements, using materials indicated for final unit of work. Locate mockups on site in location and of size indicated or, if not indicated, as directed by the Architect. Demonstrate the proposed range of aesthetic effects and workmanship to be expected in the completed work. Obtain the Architect’s acceptance of mockups before start of final unit of work. Retain and maintain mockups during construction in undisturbed condition as a standard for judging completed unit of work.
1. When directed, demolish and remove mockups from the Project site.
Select above or below.
2. Accepted mockups in undisturbed condition at time of Substantial Completion may become part of completed unit of work.
D. PreInstallation Conference: Conduct preinstallation conference in accordance with Section013119Project Meetings. Prior to commencing the installation, meet at the Project site to review the material selections, installation procedures, and coordination with other trades. Mockups shall be reviewed during the preinstallation conference. Preinstallation conference shall include, but shall not be limited to, the Contractor, the Installer, manufacturer’s representatives, and any trade that requires coordination with the work. Date and time of the preinstallation conference shall be acceptable to the Owner and the Architect.