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- SECTION 08630
-
- METAL-FRAMED SKYLIGHTS
-
- NOTE ** Naturalite BMS 3000 skylights, for flat glass,
- plastic glazing or metal panel infill.
- NOTE **
- NOTE ** This section is based on products manufactured by
- Naturalite Skylight Systems, Butler Manufacturing
- Company, which is located at:
- NOTE ** 803 Airport Road
- NOTE ** P.O.Box 629
- NOTE ** Terrell, TX 75160
- NOTE ** Tel: (800) 259-7941
- NOTE ** Fax: (972) 551-6129
- NOTE **
- NOTE ** Naturalite provides complete design, engineering,
- fabrication, finishing, and installation services
- for skylights of any size or complexity.
- NOTE **
- NOTE ** SECTION 08630 - METAL-FRAMED SKYLIGHTS, The
- Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Delete any products or work not required for this
- project.
-
- A. Removal and disposal of existing skylight, to make way
- for new skylight.
-
- B. Metal-framed skylights and their glazing.
-
- C. Motor-operators for skylights.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 05120 - Structural Steel: Structural supports
- for skylights.
-
- B. Section 05162 - Space Frames: Structural supports for
- skylights.
-
- C. Section 07620 - Sheet Metal Flashing and Trim.
-
- D. Section 08900 - Glazed Curtain Walls.
-
- E. Section 12500 - Window Treatment: Anchors and brackets
- for window treatments attached to skylights.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section.
-
- A. AA - Aluminum Design Manual; The Aluminum Association.
-
- B. AAMA 501.1 - Standard Test Method for Metal Curtain Walls
- for Water Penetration Using Dynamic Pressure; part of
- AAMA 501; American Architectural Manufacturers
- Association.
-
- C. AAMA 603.8 - Voluntary Performance Requirements and Test
- Procedures for Pigmented Organic Coatings on Extruded
- Aluminum; American Architectural Manufacturers
- Association.
-
- D. AAMA 605.2 - Specification for High Performance Organic
- Coatings on Architectural Extrusions and Panels; American
- Architectural Manufacturers Association.
-
- E. AAMA 606.1 - Voluntary Guide Specifications and
- Inspection Methods for Integral Color Anodic Finishes for
- Architectural Aluminum; American Architectural
- Manufacturers Association.
-
- F. AAMA 607.1 - Voluntary Guide Specification and Inspection
- Methods for Clear Anodic Finishes for Architectural
- Aluminum; American Architectural Manufacturers
- Association.
-
- G. AAMA GDSG-1 - Glass Design for Sloped Glazing; American
- Architectural Manufacturers Association.
-
- H. AAMA SDGS-1 - Structural Design Guidelines for Aluminum
- Framed Skylights; American Architectural Manufacturers
- Association.
-
- I. AAMA TSGG-90 - Two-Sided Structural Glazing Guidelines
- for Aluminum Framed Skylights; American Architectural
- Manufacturers Association.
-
- J. ASTM C 509 - Standard Specification for Elastomeric
- Cellular Preformed Gasket and Sealing Material.
-
- K. ASTM C 794 - Standard Test Method for Adhesion-in-Peel of
- Elastomeric Joint Sealants.
-
- L. ASTM C 864 - Standard Specification for Dense Elastomeric
- Compression Seal Gaskets, Setting Blocks and Spacers.
-
- M. ASTM C 1036 - Standard Specification for Flat Glass.
-
- N. ASTM C 1048 - Standard Specification for Heat-Treated
- Flat Glass--Kind HS, Kind FT Coated and Uncoated Glass.
-
- O. ASTM D 1149 - Standard Test Method for Rubber
- Deterioration--Surface Ozone Cracking in a Chamber.
-
- P. 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.
-
- Q. ASTM E 331 - Standard Test Method for Water Penetration
- of Exterior Windows, Curtain Walls and Doors by Uniform
- Static Air Pressure Difference.
-
- R. ASTM E 773 - Standard Test Methods for Seal Durability of
- Sealed Insulating Glass Units.
-
- S. ASTM E 774 - Standard Specification for Sealed Insulating
- Glass Units.
-
- T. FGMA Glazing Manual; Glass Association of North America.
-
- U. IGCC Certified Products Directory; Insulating Glass
- Certification Council.
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's descriptive literature,
- specifications, and installation instructions.
-
- C. Test Reports: Show compliance with specified performance
- requirements.
-
- D. Shop Drawings: Prepare specifically for this project.
- Include:
- 1. Detailed plans and elevations, details of framing
- members, glazing materials, sealants, fasteners,
- anchors.
- 2. Types and thicknesses of formed flashing and
- closures.
- 3. Interface with adjacent construction.
- 4. Horizontal and vertical forces at rafters.
- NOTE ** Delete the following paragraph if colors are
- completely specified or indicated on the drawings.
-
- E. Selection Samples: Two sets of color charts or samples,
- for selection of colors of finishes, glazing, and
- sealants.
-
- F. Glazing Samples: Two pieces, 12 inches (300 mm) square,
- of glazing in specified color, pattern, and coating, for
- verification.
-
- G. Metal Finish Samples: Two pieces of aluminum with
- specified finish and color, for verification.
- NOTE ** Delete the following paragraph if no structural
- silicone sealant is required.
-
- H. Certification for Structural Sealant: Written
- documentation from sealant manufacturer:
- 1. Statement that the sealant selected has been tested
- for adhesion and compatibility on representative
- samples of metal, glass and other glazing components.
- 2. Statement that the sealant joint design and
- application procedures shown on the shop drawings are
- suitable for this project.
- 3. List of recommended cleaning methods and priming
- recommendations.
- 4. Results of adhesion tests for sealants proposed for
- use on the project.
-
- 1.5 QUALITY ASSURANCE
-
- A. Manufacturer Qualifications: Minimum of 10 years
- experience in the fabrication and installation of similar
- products.
- NOTE ** The skylight manufacturer should install complex,
- monumental, and four-sided structurally-glazed
- skylights. That way, although the manufacturer may
- elect to subcontract the installation work, the
- ultimate responsibility for the entire skylight and
- the warranty remain the manufacturer's. Edit the
- following paragraph if other not required.
-
- B. Installer Qualifications: The manufacturer of the
- skylight or his authorized representative.
-
- C. Pre-Installation Meeting: Convene just prior to start of
- site operations.
- 1. Require attendance of installer and installation
- personnel.
- 2. Cover procedures required to maintain proper working
- conditions, to coordinate with other work, and to
- protect roofing and flashings as required by roofing
- manufacturer.
-
- 1.6 DELIVERY, STORAGE, AND HANDLING
-
- A. Arrange deliveries to avoid delays but to minimize on-
- site storage.
-
- B. Deliver products in labelled protective packages.
-
- C. Deliver, handle, and store in strict compliance with
- manufacturer's instructions and recommendations.
-
- 1.7 WARRANTY
-
- A. Skylight Warranty: Provide written warranty signed by
- manufacturer that products are free of defects in
- material and workmanship. Include repair or replacement
- of work for five years from date of completion. Defects
- are defined to include uncontrolled leakage of water and
- abnormal aging or deterioration.
- NOTE ** Delete the following paragraph if fluoropolymer
- finish is not specified. Anodized and baked enamel
- finishes are normally covered by the standard one-
- year warranty, but additional coverage may be
- available pending manufacturer review of geographic
- location and at additional cost.
-
- B. Fluoropolymer Finish Warranty: Provide written warranty
- signed by manufacturer and finisher that finish is free
- of defects in material and workmanship. Include repair
- or replacement of work which exhibits defects for five
- years from date of completion. Defects are defined to
- include peeling, chipping, chalking, fading, abnormal
- aging or deterioration, and failure to perform as
- required.
-
- C. Glazing Warranty: Provide written warranty signed by
- manufacturer that glazing is free of defects in material
- and workmanship. Include repair or replacement of work
- which exhibits defects for five years from date of
- manufacture. Defects are defined to include
- delamination, seal failure, and deterioration of film
- coatings.
-
- 1.8 EXTRA MATERIALS
- NOTE ** Delete the following paragraph if not required.
- Extra material ("attic stock") is intended as a
- small quantity on hand for the most common sizes
- and shapes of glass used on the project. This is
- especially useful for special tints or coatings
- because there may be very long lead times (14 to 16
- weeks) to manufacture these special items. Non-
- typical or odd-size units are not usually included,
- since the cost is high compared to the likelihood
- they will be needed.
- NOTE **
- NOTE ** Some owners, such as government agencies, may not
- be able to include extra materials in the
- construction budget.
-
- A. Extra Materials: If 50 or more glazing units of the
- exact same size are required, provide 1 percent, or a
- minimum of 1 unit, for Owner's use; pack in sturdy
- containers, label, and store in the area designated by
- the Owner.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Provide products made by Naturalite Skylight Systems,
- Butler Manufacturing Company, P.O.Box 629, 750 Airport
- Road, Terrell, TX 75160. ASD. Tel: (800) 527-4018. Fax:
- (972) 551-6420.
- NOTE ** Delete one of the two following paragraphs;
- coordinate with Division 1 requirements. If other
- manufacturers must be listed, Super Sky Products
- Inc. and Fisher Skylights may manufacture products
- of equivalent performance.
-
- B. Requests for substitution will be considered in
- accordance with provisions of Section 01600.
-
- C. Substitutions: Not permitted.
-
- D. For manufacturers not listed, submit evidence of ability
- to provide products that meet both performance and
- product requirements, including list of projects of
- similar design and complexity completed within the last 5
- years.
-
- E. Provide primary materials that are made by a single
- manufacturer.
-
- 2.2 METAL-FRAMED SKYLIGHTS
-
- A. Metal-Framed Skylights - Performance Requirements:
- NOTE ** Delete the following paragraph if not required.
- This paragraph requires that the skylight be of a
- configuration, or be stiff enough, to exert only
- vertical forces -- considerably more expensive than
- otherwise. If this "non-thrusting" design is
- required, contact Naturalite early in the design
- phase -- some configurations can be designed to be
- "non-thrusting", others cannot.
- 1. Design framing system to exert no horizontal forces
- on supporting structure.
- 2. Design to withstand the following:
- NOTE ** Loads must be determined for each project, based on
- local code, location, and building configuration.
- Refer also to AAMA Structural Design Guidelines for
- Aluminum Framed Skylights for information on design
- loadings and deflection considerations.
- a. Snow load: ___ psf (___ kPa) snow load.
- b. Wind load: ___ psf (___ kPa) positive and ___
- psf (___ kPa) negative.
- c. Dead loads.
- d. Concentrated live load: 250 pounds (113 kg)
- applied to any framing member at a location that
- will produce the most severe stress or
- deflection.
- NOTE ** Delete one of the following two paragraphs. The
- first is for use if the skylight is part of a
- heated enclosure; the second is for an unheated
- enclosure.
- e. Temperature range: 70 degrees F (39 degrees C)
- above and below ambient temperature.
- f. Temperature range: 50 degrees F (28 degrees C)
- above and below ambient temperature.
- NOTE ** Be sure to check state and local building codes for
- allowable frame deflections. Some codes include
- skylight framing members under the requirements for
- roof structural members, which might require less
- deflection.
- 3. Deflection of Any Glazing Support Member Under Load:
- Not more than 1/180 of the unsupported span.
- 4. Air Infiltration: Not more than 0.06 cfm per sq ft
- (1.1 cu m/h per sq m) of glazed surface area, when
- tested in accordance with ASTM E 283 at a static
- pressure differential of 6.24 psf (3.0 kPa).
- 5. Water Penetration: No uncontrolled water leakage,
- when tested in accordance with ASTM E 331 at a static
- pressure differential of 12 psf (5.7 kPa).
- 6. Water Penetration: No uncontrolled water leakage,
- when tested in accordance with AAMA 501.1 at a static
- pressure differential of 12 psf (5.7 kPa).
-
- B. Metal-Framed Skylights: Naturalite BMS 3000 system;
- aluminum framing system with glazing, manufacturer-
- engineered and factory-fabricated, complete with all
- glazing accessories, flashings, connections, and anchors.
- NOTE ** Delete all but one of the following three
- paragraphs.
- 1. Glazing Method: Cap glazing.
- 2. Glazing Method: Two sides structural silicone
- glazing; other two sides cap glazing.
- 3. Glazing Method: Four sides structural silicone
- glazing.
- NOTE ** Delete the following if not required. Be sure that
- the drawings clearly indicated which steel members
- are to be engineered and furnished by the skylight
- manufacturer (and not by the structural steel
- fabricator).
- 4. Include steel structural members indicated on
- drawings as part of the skylight system.
- 5. Fabricate to actual dimensions of constructed work
- where possible; otherwise, allow for field adjustment
- using trim or flashing of adjustable size or
- configuration.
- 6. Fabricate work straight, plumb, level and square, of
- sizes, shapes, and profiles indicated on approved
- shop drawings, with uniform, tight joints.
- NOTE ** Delete all but one of the following three
- paragraphs. Naturalite recommends fluoropolymer
- coating for exterior surfaces due to its excellent
- weathering and chemical resistance. Fluoropolymer
- is more expensive than anodizing and some colors
- cost more than others -- if color is not specified,
- bidders usually include only "non-exotic" colors.
- 7. Exterior Aluminum Finish: Clear anodized.
- 8. Exterior Aluminum Finish: Color anodized.
- 9. Exterior Aluminum Finish: Fluoropolymer coating.
- NOTE ** If clear anodizing is specified delete all of the
- following six paragraphs. Otherwise, select one
- and delete the others.
- 10. Color: Medium bronze.
- 11. Color: Dark bronze.
- 12. Color: Black.
- 13. Color: As selected from manufacturer's standard
- colors.
- 14. Color: Custom color to match Architect's sample.
- 15. Color: _______.
- NOTE ** Delete all but one of the following five
- paragraphs.
- 16. Interior Aluminum Finish: Same as exterior finish.
- 17. Interior Aluminum Finish: Clear anodized.
- 18. Interior Aluminum Finish: Color anodized.
- 19. Interior Aluminum Finish: Baked enamel coating.
- 20. Interior Aluminum Finish: Fluoropolymer coating.
- NOTE ** If clear anodizing is specified delete all of the
- following six paragraphs. Otherwise, select one
- and delete the others. It is highly recommended
- that colors be specified or indicated on the
- drawings -- color required affects the cost of all
- these finishes. Non-standard or "exotic" colors
- significantly affect the cost of coated finishes.
- Refer to manufacturer's catalog data for colors
- available.
- 21. Color: Medium bronze.
- 22. Color: Dark bronze.
- 23. Color: Black.
- 24. Color: As selected from manufacturer's standard
- colors.
- 25. Color: Custom color to match Architect's sample.
- 26. Color: _______.
-
- C. Framing Members: Extruded aluminum, 6063-T5, 6063-T6, or
- 6061-T6 alloy and temper, as recommended by the
- manufacturer for design loading, cross-sectional
- configuration, fabrication requirements and finish
- required.
- NOTE ** Delete one of the following two paragraphs.
- Tubular framing is the most common because it is
- most efficient structurally and it allows for
- concealed condensation gutters, keeping the members
- free of drips and streaking. I-beam and "skin-
- type" framing (used with separate structure) are
- also available.
- 1. Provide tubular rafter and purlin framing members.
- 2. Provide _______-shaped rafter and purlin framing
- members.
- 3. Design to collect and channel condensation and water
- infiltration to the exterior through weep holes or
- drain tubes in the sill or perimeter framing members.
- 4. Design condensation gutters so they are concealed and
- flush with framing.
- 5. Reinforce butt, mitered, and splice joints with
- internal aluminum splice plates where possible;
- mechanically fastened with stainless steel truss head
- fasteners in accordance with manufacturer's standard
- connection details.
- 6. Include a positive stop to control compression in the
- glazing rabbet.
- NOTE ** Delete any of the following glazing methods that
- are not required.
- 7. Cap Glazing: Glazing caps mechanically secured with
- thermally broken glazing clips at purlins and sills;
- sealed at corner intersections.
- NOTE ** Delete the following paragraph if not required.
- 8. Cap Glazing: Provide a full perimeter exterior wet
- seal.
- 9. Two-Sided Structural Silicone Glazing: Two sides of
- glazing retained with glazing caps mechanically
- secured with thermally insulated glazing clips; two
- remaining sides secured to continuous aluminum fin
- using structural silicone glazing sealant in shear-
- type joint design; comply with AAMA Two-Sided
- Structural Glazing Guidelines for Aluminum Framed
- Skylights.
- 10. Four-Sided Structural Silicone Glazing: Factory
- glazed using perimeter frame secured to the inside
- surface of the glazing using structural silicone
- glazing sealant; mechanically fastened to the support
- framing system with retainer clips spaced as required
- to support design loads; design to allow for exterior
- glazing replacement without disrupting adjacent
- glazing.
- 11. Do not anchor sill members through integral secondary
- gutter area on pitches less than 4 in 12 (1:3) from
- horizontal.
- 12. Welding: Factory-performed heliarc welding with all
- exposed welds finished to match adjacent material.
-
- D. Formed Flashing and Closures: Aluminum sheet.
- 1. Anodized: Minimum 0.040 inch (1.0 mm) thick.
- 2. Coated Finish: Minimum 0.062 inch (1.6 mm) thick.
-
- E. Anchors and Fasteners:
- 1. Not Exposed to Weather: Cadmium plated lag, sleeve
- and stud bolt anchors.
- 2. Exposed to Weather: Stainless steel, 300 series.
- 3. Where bolted connections penetrate secondary gutter
- of sill member: Same as if exposed to weather.
-
- F. Finishes:
- NOTE ** Delete one of the following two paragraphs if clear
- anodizing is specified. The first paragraph is the
- best quality clear anodizing available and should
- be used on the exterior, while Class II is suitable
- for interior applications.
- 1. Clear Anodizing: Class I, AA-M10C22A41 clear
- anodized coating complying with AAMA 607.1, 0.7 mils
- (0.018 mm) or thicker.
- 2. Clear Anodizing: Class II AA-M10C22A31 clear
- anodized coating complying with AAMA 607.1, 0.4 to
- 0.7 mils (0.010 to 0.018 mm) thick.
- 3. Color Anodizing: Class I, AA-M10C22A44 anodized
- coating electrolytically deposited complying with
- AAMA 606.1, 0.7 mils (0.018 mm) or thicker.
- 4. Baked Enamel Coating: Polyester, complying with AAMA
- 603.8.
- NOTE ** Delete all but one of the following two paragraphs
- if fluoropolymer finish is required. For dark or
- bright colors or metallic finish, consult with
- finish manufacturer and specify actual color or
- finish selected -- cost will vary.
- 5. Fluoropolymer Coating: Two coats 70 percent Kynar
- 500/Hylar 5000 resin base fluoropolymer finish
- complying with AAMA 605.2.
- 6. Fluoropolymer Coating: Three coats 70 percent Kynar
- 500/Hylar 5000 resin base fluoropolymer finish
- complying with AAMA 605.2.
- 7. Fluoropolymer Coating: Four coats 70 percent Kynar
- 500/Hylar 5000 resin base fluoropolymer finish
- complying with AAMA 605.2.
-
- 2.3 GLAZING AND INFILL MATERIALS
- NOTE ** The following are examples of ways to specify
- glazing. Consult with glazing manufacturers.
- Refer to AAMA Glass Design for Sloped Glazing for
- design considerations. Naturalite can provide
- assistance in selection of low-e and other coatings
- for skylight applications. Most sloped glazing and
- skylight applications require that the plies of
- either monolithic or insulating units be heat-
- strengthened. Do not use annealed laminated glass
- with low-e or reflective coatings regardless of
- which surface the coating is applied to.
-
- A. Glazing: Glass as specified in Section 08800.
-
- B. Glazing: Single; 1/2 inch (13 mm) laminated glass:
- 1. Outboard Ply: 1/4 inch (6 mm) clear heat-
- strengthened glass.
- NOTE ** Delete one of the following two paragraphs.
- 2. Interlayer: 0.030 inch (0.08 mm) clear polyvinyl
- butyral (PVB) sheet.
- 3. Interlayer: 0.060 inch (1.5 mm) clear polyvinyl
- butyral (PVB) sheet.
- 4. Inboard Ply: 1/4 inch (6 mm) clear heat-strengthened
- glass.
-
- C. Glazing: Sealed insulating units:
- 1. Exterior Lite: 1/4 inch (6 mm) clear heat-
- strengthened glass.
- 2. Air space: 1/2 inch (12 mm).
- 3. Interior lite: Laminated glass:
- NOTE ** Delete all but one of the following three
- paragraphs. 1/8 inch plies result in a 1 inch
- thick unit. 3/16 inch plies result in a 1-/8 inch
- thick unit. 1/4 inch plies result in a 1-1/4 inch
- thick unit.
- a. 2 plies of 1/8 inch (3 mm) clear glass.
- b. 2 plies of 3/16 inch (5 mm) clear glass.
- c. 2 plies of 1/4 inch (6 mm) clear glass.
- d. Heat-strengthened.
- NOTE ** Delete one of the following two paragraphs.
- e. Interlayer: 0.030 inch (0.8 mm) clear polyvinyl
- butyral (PVB) sheet.
- f. Interlayer: 0.060 inch (1.5 mm) clear polyvinyl
- butyral (PVB) sheet.
-
- D. Glazing: Plastic glazing sheet:
- NOTE ** Delete one of the following two paragraphs.
- 1. Single glazed.
- 2. Double glazed.
- NOTE ** Delete one of the following two paragraphs.
- 3. Glazing Sheet: Continuous cast acrylic sheet.
- 4. Glazing Sheet: Continuous cast polycarbonate sheet.
- 5. Thickness: As determined by skylight manufacturer.
- 6. Color: Selected by Architect from skylight
- manufacturer's standard selection.
- 7. Color: ________.
- NOTE ** The following glazing is for vertical applications
- that may be associated with the skylight, such as
- end walls, entrances, and vestibules. Doors and
- sidelights usually must be safety glazing. Delete
- any of the following paragraphs on vertical glazing
- that are not required.
-
- E. Glazing for Vertical Framing: Same as for skylight.
-
- F. Glazing for Vertical Framing: Single glazing.
- 1. 1/4 inch (6 mm) thick clear glass.
- NOTE ** Delete one of the following two paragraphs.
- NOTE **
- 2. Heat-strengthened.
- 3. Fully tempered.
-
- G. Glazing for Vertical Framing: Sealed insulating units:
- NOTE ** Delete one of the following two paragraphs.
- 1. Exterior Lite: 1/4 inch (6 mm) clear heat-
- strengthened glass.
- 2. Exterior Lite: 1/4 inch (6 mm) clear fully-tempered
- glass.
- 3. Air space: 1/2 inch (12 mm).
- NOTE ** Delete one of the following two paragraphs.
- 4. Interior Lite: 1/4 inch (6 mm) clear heat-
- strengthened glass.
- 5. Interior Lite: 1/4 inch (6 mm) clear fully-tempered
- glass.
- NOTE ** Metal panels integral with skylight system should
- be specified in this section. Do not exceed 60
- inches in either length or width, due to
- availability of coated sheet. Fluoropolymer
- coating finish is the most common.
-
- H. Insulated Panels: Flat, metal faced panels with
- insulating core.
- 1. Face Sheets: Prefinished 0.040 inch (1.0 mm) thick
- aluminum, alloy 5005-H34.
- 2. Core: Polyisocyanurate structural foam core with R-
- value of 5.9 per inch (1.04 W/(m K)/M) thickness.
- 3. Thickness: Same as adjacent glazing unit.
- 4. Finish: Same as for framing.
- NOTE ** Delete one of the following two paragraphs.
- 5. Color: Same as for framing.
- 6. Colors: Different from framing and different colors
- are required for interior and exterior faces.
- NOTE ** Delete the following paragraph if panels are not
- installed in 2-sided structural silicone sealant
- application.
- 7. Two-Sided Structural Silicone Glazing Applications:
- Purlin edges with panned edges or 1/2 inch (12 mm)
- returns as indicated on the Drawings.
-
- I. Glass: Conform to applicable requirements of ASTM C 1036
- and ASTM C 1048.
- 1. Determine glass strengths using AAMA Glass Design for
- Sloped Glazing guidelines.
- 2. Glaze in accordance with FGMA Glazing Manual and
- glass fabricator's guidelines.
- NOTE ** Delete the following two paragraphs if sealed
- insulating units are not used.
- 3. Sealed Insulating Units: Dual sealed with primary
- seal of polyisobutylene and secondary seal of two-
- part silicone equal to Dow Corning 982 or GE Silicone
- 4200.
- 4. Sealed Insulating Units: Class A rated when tested
- in accordance with ASTM E 773 and ASTM E 774; IGCC
- certified.
-
- J. Gaskets: Provide continuous cushion below and continuous
- spacer above glazing.
- 1. Ozone Resistance: Withstand one part per million
- ozone for 500 hours at 20 percent elongation at 100
- degrees F (38 degrees C) when tested in accordance
- with ASTM D 1149.
- NOTE ** Delete one of the following two paragraphs.
- Silicone rubber gaskets are an additional cost.
- 2. Gaskets Below Glazing: Extruded, dense EPDM black
- rubber, Shore A durometer of 60 plus or minus 5,
- complying with ASTM C 864.
- 3. Gaskets Below Glazing: Extruded, silicone rubber,
- Shore A hardness of 40 plus/minus 5 when tested in
- accordance with ASTM C 1115.
- 4. Gaskets Above Glazing: Extruded, closed-cell, sponge
- EPDM black rubber, complying with ASTM C 509.
-
- K. Sealants: As required by skylight manufacturer.
- 1. Adhesion: Show adequate adhesion to samples of metal
- and glass, when tested in accordance with ASTM C 794.
- 2. Exterior Metal-to-Glass Corner and Cap Seals: Black.
- 3. Exposed Metal-to-Metal Joints: Any standard color
- silicone sealant.
- NOTE ** Delete the following paragraph if neither 2-sided
- nor 4-sided structural silicone glazing is used.
-
- L. Structural Silicone Glazing Sealant: Type as required by
- skylight manufacturer; compatible with all contact
- components.
- 1. Insulating Glass Applications: Limit depth of
- silicone joint to design thickness of exterior lite;
- use temporary clips to secure purlin edge of unit in
- place until sealant has fully cured.
- 2. Comply with AAMA Two-Sided Structural Glazing
- Guidelines for Aluminum Framed Skylights for design
- and field procedures.
-
- 2.4 ACCESSORIES
- NOTE ** Delete the following paragraph if not required.
- Motor-operated skylight applications require a
- feasibility study by Naturalite early in the design
- phase.
-
- A. Operable Skylights: Include all components required to
- make skylight operable, including steel track, support
- brackets, mechanical drive system, electric motors, limit
- switches, control panel, key operated switches and
- accessories.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
- NOTE ** DRAWING COORDINATION: The drawings should indicate
- the locations, types, and dimensions of the
- skylight units, and show details of interface with
- adjacent construction.
-
- A. Take field measurements to verify that fabricated work
- will fit spaces intended.
-
- B. Verify that areas in which work is to be installed are
- ready for installation and that supports are installed
- correctly.
-
- C. Do not proceed until unsatisfactory conditions have been
- corrected.
-
- 3.2 PREPARATION
- NOTE ** Delete the following paragraph if no demolition is
- required.
-
- A. Remove existing skylight and other components and prepare
- for new construction. Do not overload adjacent
- construction. Remove debris from site and dispose of
- legally.
-
- 3.3 INSTALLATION
-
- A. Install in strict accordance with manufacturer's
- instructions and recommendations and with approved shop
- drawings; provide a complete weatherproof assembly.
-
- B. Anchor securely to supporting structure, but allow for
- differential and thermal movement.
- NOTE ** Delete the following paragraph if neither 2-sided
- nor 4-sided structural silicone glazing is used.
-
- C. Do not perform structural silicone sealant work when the
- metal temperature is below 32 degrees F (0 degrees C).
-
- D. Separate aluminum members from dissimilar metals with
- protective coating or sheet capable of preventing
- electrolytic action.
-
- E. Ensure that weep and condensation control measures
- function properly.
-
- F. Field-Applied Sealants: Clean and prime surfaces as
- required to assure proper adhesion; apply in accordance
- with sealant manufacturer's guidelines and joint
- dimensions shown on approved shop drawings.
-
- G. Coordinate with other work.
-
- 3.4 CLEANING AND REPAIR
-
- A. Remove labels, part number markings, sealant smears,
- handprints, and construction dirt; protect installed work
- from damage.
-
- B. Clean all exposed surfaces immediately prior to final
- inspection, using non-abrasive materials and methods
- recommended by manufacturer.
-
- C. Repair damaged components and finishes in accordance with
- manufacturer's recommendations; replace work that cannot
- be repaired to the satisfaction of the Architect.
-
- D. Protect completed work from damage.
-
- END OF SECTION
-