Omaha Public School Kellom Elementary School Renovations

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3 PART 1 GENERAL 1.01 SECTION INCLUDES A. Insulating glass units. B. Glazing units. C. Mirrors SECTION GLAZING D. Glazing compounds and accessories RELATED REQUIREMENTS A. Section Joint Sealants: Sealants for other than glazing purposes. B. Section Hollow Metal Doors and Frames: Glazed lites in doors and borrowed lites. C. Section Flush Wood Doors: Glazed lites in doors REFERENCE STANDARDS A. 16 CFR Safety Standard for Architectural Glazing Materials; current edition. B. ANSI Z American National Standard for Safety Glazing Materials Used in Buildings, Safety Performance Specifications and Methods of Test; C. ASTM C864 - Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers; 2005 (Reapproved 2011). D. ASTM C Standard Specification for Flat Glass; E. ASTM C Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass; F. ASTM C Standard Guide for Use of Joint Sealants; G. ASTM C Standard Specification for Pyrolytic and Vacuum Deposition Coatings on Flat Glass; H. ASTM D882 - Standard Test Method for Tensile Properties of Thin Plastic Sheeting; I. ASTM E Standard Specification for Insulating Glass Unit Performance and Evaluation; J. GANA (SM) - GANA Sealant Manual; K. ICC (IBC) - International Building Code; L. UL (DIR) - Online Certifications Directory; current listings at database.ul.com SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data on Insulating Glass Unit and Glazing Unit Glazing Types: Provide structural, physical and environmental characteristics, size limitations, special handling and installation requirements. C. Product Data on Glazing Compounds and Accessories: Provide chemical, functional, and environmental characteristics, limitations, special application requirements. Identify available colors. D. Samples: Submit two samples 12 by 12 inch in size of glass units. E. Certificates: Certify that products meet or exceed specified requirements. F. Manufacturer's Certificate: Certify that glass and glazing products meets or exceeds specified requirements FEBRUARY Purdy & Slack Architects, P.C.

4 1.05 COORDINATION A. The glazing subcontractor shall coordinate his/her requirements with the steel frame subcontractors to assure that frames are provided with required bite, edge, and face clearance QUALITY ASSURANCE A. Requirements of Regulatory Agencies: All areas of glazing shall comply with all applicable codes, including but not limited to the International Building Code, 2015 Edition. In case of conflict between that regulation and these Drawings and Specifications, the requirements of the regulatory agency shall govern. B. Glass Standards: Glass installations shall meet the requirements of ASTM C Heat-treated glass shall meet the requirements of ASTM C Safety glass shall meet the requirements of Standard CPSC 16 CFR C. Glass material containing bubbles, scratches, or other glass shall be removed immediately upon notice. D. Manufacturer's Label: Each piece of glass shall bear the manufacturer's label MOCK-UPS A. See Section Quality Requirements, for additional mock-up requirements FIELD CONDITIONS A. Do not install glazing when ambient temperature is less than 40 degrees F or above 90 degrees F STORAGE AND HANDLING A. Stack glazing sheets at 5 to 7 degrees from vertical. Separate sheets with interweaving of protection paper and cushion top and bottom edges with felt. Cover to protect material from wind-blown water or run-off, but provide for ventilation and circulation of cool, dry air. Maintain temperature above dew point. Protect glazing material from welding, sandblasting, and other potentially damaging operations before and after installation. B. Handle glazing sheets to prevent damage to edges and corners WARRANTY A. See Section Closeout Submittals, for additional warranty requirements. B. Warranty on Hermetic Seals: Provide insulating glass manufacturer's written warranty, agreeing to, within specified warranty period, furnish FOB project site, replacement units for insulating glass units which have defective hermetic seals (excluding that due to glass breakage); defined to include intrusion of moisture or dirt, internal condensation at temperatures above -20F, and other visual evidence of seal failure or performance failure; provided manufacturer's instructions for handling, installation, protection, and maintenance have been adhered to during warranty period. If this warranty is not honored by the glass manufacturer because of defective installation procedures or other actions of the glazing subcontractor, that subcontractor shall be liable for the terms of that warranty for a period of 5 years after the date of Substantial Completion. C. Warranty period is 10 years after seal date permanently imprinted on unit, but not less than 9 years after date of Substantial Completion. D. All glass shall be warranted for 10 years against breakage due to defects in materials, workmanship or installation with all such glass immediately removed and replaced with matching new material at no additional cost to the Owner upon notification by the Owner. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Glass Fabricators: FEBRUARY Purdy & Slack Architects, P.C.

5 B. Float Glass Manufacturers: 1. AGC Glass Company North America, Inc: 2. Falconer Glass Industries, Division of Guardian Industries Corp. 3. Guardian Industries Corp: 4. Pilkington North America Inc: 5. PPG Industries, Inc: 6. Saint-Gobain. C. Plastic Films Manufacturers: 1. 3M Window Film: 2. Flexvue Films: 3. Llumar, an Eastman Chemical Company; Llumar or Vista: GLASS MATERIALS A. Float Glass: Provide float glass based glazing unless noted otherwise. 1. Annealed Type: ASTM C1036, Type I - Transparent Flat, Class 1 - Clear, Quality-Q3. 2. Heat-Strengthened and Fully Tempered Types: ASTM C1048, Kind HS and FT. 3. Thicknesses: As indicated; provide greater thickness as required for exterior glazing wind load design INSULATING GLASS UNITS A. Insulating Glass Units Manufacturers: 1. AGC Glass Company North America, Inc: 2. Cardinal Glass Industries: 3. Falconer Glass Industries, Division of Guardian Industries Corp. 4. Guardian Industries Corp: 5. Pilkington North America Inc: 6. Viracon, Apogee Enterprises, Inc: B. Insulating Glass Units: Types as indicated. 1. Durability: Certified by an independent testing agency to comply with ASTM E Coated Glass: Comply with requirements of ASTM C1376 for pyrolytic (hard-coat) or magnetic sputter vapor deposition (soft-coat) type coatings on flat glass; coated vision glass, Kind CV; coated overhead glass, Kind CO; or coated spandrel glass, Kind CS. 3. Metal Edge Spacers: Aluminum, bent and soldered corners. 4. Spacer Color: Aluminum. 5. Edge Seal: a. Single-Sealed System: Provide silicone sealant as secondary seal applied around perimeter. 6. Color: Grey. 7. Purge interpane space with dry air, hermetically sealed with primary and secondary seals. C. Type A Clear Insulating Heat Strengthened Glass Units: Vision glass, double glazed. 1. Space between lites filled with air. 2. Outboard Lite: Heat Strengthened float glass, 1/4 inch thick. a. Tint: Clear. b. Coating: VNE-63, on #2 surface. 3. Inboard Lite: Heat Strengthened float glass, 1/4 inch thick. a. Tint: Clear. 4. Total Thickness: 1 inch. 5. Thermal Transmittance (U-Value):.29 Winter and.26 Summer, nominal. 6. Visible Light Transmittance (VLT): 62 percent, nominal. 7. Solar Heat Gain Coefficient (SHGC):.29, nominal. 8. Shading Coefficient: FEBRUARY Purdy & Slack Architects, P.C.

6 D. Type B Clear Insulating Tempered Glass Units: Vision Glass double glazed. 1. Space between lites filled with air. 2. Outboard Lite: Fully Tempered float glass, 1/4 inch thick. a. Tint: Clear. b. Coating: VNE-63, on #2 surface. 3. Inboard Lite: Fully Tempered float glass, 1/4 inch thick. a. Tint: Clear. 4. Total Thickness: 1 inch. 5. Thermal Transmittance (U-Value):.29 Winter and.26 Summer, nominal. 6. Visible Light Transmittance (VLT): 62 percent, nominal. 7. Solar Heat Gain Coefficient (SHGC):.29, nominal. 8. Shading Coefficient: GLAZING UNITS A. Type C - Clear Tempered Glass: 1. Applications: As scheduled. 2. Glass Type: Fully tempered float glass. 3. Tint: Clear. 4. Thickness: 1/4 inch, nominal GLAZING SEALANTS A. Glazing Sealant for the exterior perimeter of all glass panes where they abut frame members (unless recommended otherwise by the glass manufacturer) shall be the following type and manufacturer: 1. General Electric Company; Silprof. B. Other glazing sealants shall be of the type and manufacture recommended by the glazing manufacturer for the type of glass and application. C. Sealant Backer Rod: To be compressible continuous length rod stock of closed cell polyethylene foam for use as back-up of butt joint sealants as shown on the Drawings. Color shall be manufacturer's standard. Backer rod shall be of the diameter as recommended by the Fabricator/Installer and shall be one of the following or as otherwise recommended by the Fabricator/Installer: 1. Chemrex, Inc.; Sonofoam Backer Rod. 2. W.R. Meadows, Inc.; Seal Tight Backer Rod. D. Joint Primer/Sealer: To be the type of joint/sealer recommended by the sealant manufacturer for the joint surfaces to be primed, bonded, and sealed ACCESSORIES A. Setting Blocks: Neoprene or EPDM, with 80 to 90 Shore A durometer hardness; ASTM C864 Option II. Length of 0.1 inch for each square foot of glazing or minimum 4 inch x width of glazing rabbet space minus 1/16 inch x height to suit glazing method and pane weight and area. B. Spacer Shims: Neoprene or EPDM, 50 to 60 Shore A durometer hardness; ASTM C864 Option II. Minimum 3 inch long x one half the height of the glazing stop x thickness to suit application, self adhesive on one face. C. Glazing Tape, Back Bedding Mastic Type: Preformed, butyl-based, 100 percent solids compound; 5 to 30 cured Shore A durometer hardness; coiled on release paper; black color. D. Glazing Gaskets: Resilient silicone extruded shape to suit glazing channel retaining slot; ASTM C864 Option II; color black. E. Glazing Clips: Manufacturer's standard type. F. Display Case Hardware: 1. Standards: K-V 71 ANO (length as indicated on Drawings). 2. Brackets: K-V 160 ANO (length as indicted on the Drawings). 3. Shelf Supports (end standards): K-V 104 1/2P (two per bracket) with K-V 129 rubber cushions FEBRUARY Purdy & Slack Architects, P.C.

7 4. Shelf Supports (other standards): K-V 104 P (two per bracket) with K-V 129 rubber cushions: G. Sliding Glass Door Hardware: For display cases as indicated on Drawings. 1. K-V No. 993 ZC upper channel, continuous length to fit opening as required. 2. K-V No. 999 ZC lower track, continuous length to fit opening as required. 3. K-V No. 995 ZC shoe, continuous length to fit each channel of lower track per manufacturer's instructions. 4. K-V No. 997 ZC carrier, 3/4 length of opening to fit each door, one required for each door. 5. K-V No. 963 CHR ratchet lock, one for each meeting glass door location. PART 3 EXECUTION 3.01 VERIFICATION OF CONDITIONS A. Verify that openings for glazing are correctly sized and within tolerances, including those for size, squareness, and offsets at corners. B. Verify that surfaces of glazing channels or recesses are clean, free of obstructions that may impede moisture movement, weeps are clear, and support framing is ready to receive glazing system STANDARDS AND PERFORMANCE A. Watertight and airtight window and door installation of each glass product is required, except as otherwise shown. Each installation must withstand normal temperature changes, wind loading, impact loading (for operating doors), without failure including loss or breakage of glass, failure of sealants or gaskets to remain watertight and airtight, deterioration of glazing materials and other defects in the work. B. Protect all glass from edge damage during handling and installation, and subsequent operation of glazed components of the work. During installation, discard units with significant edge damage or other imperfections. C. Glazing channel dimensions as shown are intended to provide for necessary bite on glass, minimum edge clearance, and adequate sealant thicknesses, with reasonable tolerance. Adjust as required by job conditions at time of installation. D. Comply with combined recommendations and technical reports by manufacturers of glass and glazing products as used in each glazing channel, and with recommendations of Flat Glass Marketing Association "Glazing Manual," except where more stringent requirements are indicated. E. Install insulating glass units to comply with recommendations by Sealed Insulating Glass Manufacturers Association, except as otherwise specifically indicated or recommended by glass and sealant manufacturers PREPARATION A. Clean contact surfaces with appropriate solvent and wipe dry immediately before glazing. Remove coatings that are not tightly bonded to substrates. B. Seal porous glazing channels or recesses with substrate compatible primer or sealer. C. Prime surfaces scheduled to receive sealant where required for proper sealant adhesion. D. Coordinate with painter to assure that all metal frames have received their first coat of paint before glazing is started INSTALLATION, GENERAL A. Install glazing in compliance with written instructions of glass, gaskets, and other glazing material manufacturers, unless more stringent requirements are indicated, including those in glazing referenced standards. B. Install glazing sealants in accordance with ASTM C1193, GANA Sealant Manual, and manufacturer's instructions. C. Set glass lites of system with uniform pattern, draw, bow, and similar characteristics. D. Set glass lites in proper orientation so that coatings face exterior or interior as indicated FEBRUARY Purdy & Slack Architects, P.C.

8 E. Prevent glass from contact with any contaminating substances that may be the result of construction operations such as, and not limited to the following; weld splatter, fire-safing, plastering, mortar droppings, etc. F. Continuous glazing tape shall be installed at both faces of all glass. Exterior glazing shall be sealed at the full perimeter of each pane with silicone sealant where the glass abuts the metal frames. G. Make silicone joints where interior glass abuts glass and wall materials without frames. H. Install setting blocks of proper size and spacing, for glass sizes larger than 50 united inches, except where pre-shimmed tapes are used for glazing. Provide 1/8-inch minimum bite of spacers on glass and use thickness equal to sealant width, except with sealant tape use thickness slightly less than final compressed thickness of tape. I. Install tempered glass sheets in frame openings with manufacturer's identification seal placed in the lower righthand corner of each lite opening. J. Tool exposed surfaces of glazing liquids and compounds to provide a substantial "wash" away from the glass. Install pressurized tapes and gaskets to protrude slightly out of channel, so as to eliminate dirt and moisture pockets. K. Clean and trim excess glazing materials from glass and stops or frames promptly after installation, and eliminate stains and discolorations CLEANING A. Remove excess glazing materials from finish surfaces immediately after application using solvents or cleaners recommended by manufacturers. B. Remove non-permanent labels immediately after glazing installation is complete. C. Clean glass and adjacent surfaces after sealants are fully cured. D. Clean glass on both exposed surfaces not more than 4 days prior to Date of Substantial Completion in accordance with glass manufacturer's written recommendations PROTECTION A. After installation, mark pane with an 'X' by using removable plastic tape or paste; do not mark heat absorbing or reflective glass units. B. Remove and replace glass that is damaged during construction period prior to Date of Substantial Completion, including natural causes, accidents and vandalism SCHEDULES A. Types and sizes of glazing sheets to be used shall be as shown on the Frame Elevations, Elevations and other miscellaneous Drawings. END OF SECTION FEBRUARY Purdy & Slack Architects, P.C.