Section 08801 Glass and Glazing 2003-04-03 General Requirements



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Section 08801

Glass and Glazing

2003-04-03 General Requirements




Use this Section to produce a "reference Section" specifying general requirements common to all site installed glass and glazing work including all glass and glazing products required for site installation, except mirror glass which is specified separately in Section 08831.
Do not use this Section to specify glass and glazing requirements that are incorporated into systems that are typically factory manufactured, such as plastic windows which are specified in Section 08560.
Where site installed glass and glazing is the responsibility of the supplier of a particular framing system, specify the detailed glass installation requirements (but not the glass and glazing products) for that particular system, in the specification Section for that system. Eg. Specify detailed glass installation requirements for aluminum entrances and storefronts in Section 08411; for aluminum windows in Section 08520, etc.
Where site installed glass and glazing is the responsibility of a separate glass and glazing subcontractor, specify the detailed glass installation requirements (but not the glass and glazing products) in Section 08810 ‑ Glazing. Eg. Specify detailed glass installation requirements for hollow metal doors, hollow metal frames, demountable partitions, etc. in Section 08810 ‑ Glazing.
This Master Specification Section contains:
.1 This Cover Sheet
.2 Data Sheet ‑ Specifying Primary Glass Products
.3 Data Sheets - Glass Properties and Applications
.4 Specification Section Text:


1. General

1.1 Intent

1.2 Related Sections

1.3 Product Options and Substitutions

1.4 Submittals

1.5 Delivery, Storage, and Handling

1.6 Certifications
2. Products

2.1 Clear Float Glass

2.2 Tinted/Heat Absorbing Glass

2.3 Patterned Glass

2.4 Wired Safety Glass


    1. Light and Heat Reflecting Glass

2.6 Clear Laminated Safety Glass

2.7 Clear Tempered Safety Glass

2.8 Transparent, One Way, Mirrored Glass

2.9 Spandrel Glass

2.10 Low Emissivity (Low E) Glass

2.11 Plastic Safety Glazing

2.12 Insulating Glass Units

2.13 Glazing Accessories


3. Execution

3.1 Glazing General Requirements

3.2 Cleaning

3.3 Protection

3.4 Insulating Glass Schedule


Applicable Standards
.1 CAN/CGSB-12.1-M90 Tempered or Laminated Safety Glass
.2 CAN/CGSB-12.3-M91 Flat, Clear Float Glass
.3 CAN/CGSB-12.4-M91 Heat Absorbing Glass
.4 CAN/CGSB-12.6-M91 Transparent (One-Way) Mirrors
.5 CAN/CGSB-12.8-M90 Insulating Glass Units
.6 CAN/CGSB-12.9-M91 Spandrel Glass
.7 CAN-CGSB-12.10-M76 Glass, Light and Heat Reflecting
.8 Can/CGSB-12.11-M90 Wired Safety Glass
.9 CAN/CGSB-12.12-M90 Plastic Safety Glazing
.10 CAN/CGSB-12.13-M91 Patterned Glass
.11 CAN/CGSB-19.13-M87 Sealing Compound, One-Component, Elastomeric, Chemical Curing
.12 CGSB 19-GP-14M Sealing Compound, One Component, Butyl-Polisobutylene Polymer Base, Solvent Curing
.13 CAN/CGSB-19.24-M90 Multicomponent, Chemical-Curing Sealing Compound

These reference documents may be available for reference purposes in the Technical Resources and Standards Branch Library, Alberta Infrastructure, 3rd Floor, 6950 - 113 Street, Edmonton; Telephone: (780) 427-7924.


Each of the primary glass products listed in Part 2 of this Section is specified by reference to the appropriate CGSB National Standard of Canada. Each product specification also provides for selection from a series of options available under each standard. If two or more options are required for a single primary glass product, modify the "name" of the primary glass product and add another article describing the other option, in terms of the variable. For example, if tinted/heat absorbing glass is required in both laminated and annealed classes, structure the specification as follows:
2.2 LAMINATED TINTED/HEAT ABSORBING GLASS
.1 Product:  to CAN/CGSB‑12.4‑M91 and as follows:
.1 Glass Quality:  Float glass, glazing quality.
.2 Type:
.1 Single Pane Applications:  Type 1.

.2 Insulating Glass Applications:  Type 2.


.3 Class:  D ‑ Laminated, to CAN/CGSB‑12.1‑M90, minimum thickness of laminating film as follows:
.1 Vertical Glazing Applications: 0.75 mm.

.2 Sloped Glazing Applications: 1.50 mm.


.4 Tint:  Grey.
.5 Style:  1 ‑ High, above 70%, light transmittance.
.6 Grade:  AA ‑ Very low, below 0.45, shading coefficient.
2.3 ANNEALED TINTED/HEAT ABSORBING GLASS
.1 Product:  same as laminated tinted/heat absorbing glass, except as follows:
.1 Class:  A ‑ Annealed.
Laminated Safety Glass
Specify laminated glass when it is important to afford protection against flying or falling pieces of glass. Typical applications include skylights and sloped glazing. It will also offer a degree of security to unauthorized entry.
Laminated glass for typical architectural applications is comprised of two lites which, even though laminated together, will break under less impact than a non‑laminated glass lite of equal total thickness. Thickness of laminated glass may therefore have to be greater than non‑laminated glass for a given area. Depending on a particular manufacturer's capability, virtually any type of glass may be laminated except low-E soft coated. Even curved glass may be laminated.
Laminating film or interlayer, typically polyvinyl butyrate, for laminating glass to glass, is available in thicknesses of 0.38 mm, 0.75 mm and 1.50 mm. The 0.38 mm interlayer is not recommended for overhead applications and may eventually be discontinued. One U.S. standard, CPSC 16 CFR 1201 requires laminated glass with area over 0.8 m2 to have a minimum 0.75 mm thick laminating film. It is also the minimum thickness recommended for overhead glass installations. This thickness is specified in this Section as the minimum thickness for vertical glass installations.
Ensure that all exterior framing systems which are intended to accept laminated glass allow the glazing rabbet to drain. If laminated glass edges are immersed in water the plastic interlayer may discolour or delaminate. Avoid details which require the use of sealants in close proximity to laminated glass edges; a reaction may occur. Polyvinyl butyrate is incompatible with some polyurethane sealants.
Cutting of laminated glass is critical. Edge damage caused by improper cutting can greatly affect performance.
Wired Safety Glass
Wired glass has about half the strength of annealed glass of the same thickness. It is economical compared to non-wire fire-tested glazing; therefore it is used in assemblies required to have a fire-resistance rating. Broken wired glass can cause permanent injury to nerve and muscle tissue. It can also be a very good weapon; for these reasons wired glass is not recommended for security applications.
Tempered Safety Glass
Tempered glass is normally required where persons could be injured by walking through glass, ie. in doorlites, sidelites, etc. It is also recommended, with laminated glass, for sloped glazing and skylights. Tempered glass is four to five times stronger than ordinary annealed glass of the same thickness and is stronger than heat strengthened glass. Vertical tempered glass is not recommended for extensive use on projects due to a concern about spontaneous breakage. This breakage can be reduced by "heat soaking" as recommended by manufacturers, at additional cost. When it does break, tempered glass breaks into small, granular pieces which are less likely to cause injury.
Tinted/Heat Absorbing Glass
This type of glass may become relatively hot as it absorbs solar energy, even during low ambient exterior temperatures. Significant thermally induced stresses can result at edges and at shadow lines, because of differential temperatures in the glass. Manufacturers can provide guidance on how to specify glass to deal with shading conditions anticipated.
Heat Strengthened Glass
Heat strengthened glass is normally used where additional strength is required for impact, eg. exterior lite of an insulating glass unit used in a skylight, or where the glass will experience large temperature variations, eg. as in spandrel glass.
The use of heat strengthened glass minimizes or possibly eliminates the potential problem of "spontaneous breakage" of tempered glass. However, the breakage pattern of heat strengthened glass is much like ordinary annealed glass and therefore does not have the safety potential of tempered or laminated glass.
Spandrel Glass
Spandrel glass is usually a single lite opaque glass and should always have a "scrim backing". The CGSB standard for spandrel glass specifies an adhered scrim backing for Type 1 - tempered glass. The scrim backing is a reinforced backing sheet which minimizes the potential for the glass to fall out of the opening when broken. Three manufacturers of spandrel glass are LOF, AFG and PPG. Appearance and cost varies with basic glass colour, and with colour and type of coating. To reduce risk to bidders, specify colour by naming a spandrel glass colour and a manufacturer producing that colour, provided at least two other manufacturers can match that colour.

END OF DATA SHEETS
1. General
1.1 INTENT
.1 This Section specifies:
.1 General requirements common to site installed glass and glazing work.

.2 Glass and glazing products.


.2 Read this Section in conjunction with other Sections which specify glass installation in specific components.
.3 This Section is intended to be used as a reference Section; it is not a "section of work". Refer to other Sections for application of requirements specified herein.
1.2 RELATED SECTIONS
.1 Aluminum Entrances and Storefronts: Section 08411.

.2 Aluminum Windows: Section 08520.

.3 Glazing: Section 08810.

.4 Mirror Glass: Section 08831.

.5 [ ]: Section [    ].
1.3 PRODUCT OPTIONS AND SUBSTITUTIONS
SPEC NOTE:  Include this article only when proprietary method of specifying is used to specify products in this Section.
.1 Refer to Division 1 for requirements pertaining to product options and substitutions.
1.4 SUBMITTALS
.1 Comply with requirements of Division 1.
.2 Samples:  Submit 300 mm x 300 mm sized samples of each type of glass, clearly labelled with manufacturer's name and glass type. Reference glass types to those scheduled and specified herein.
.3 Stress Analysis:  Prepare a stress analysis on all [tinted heat/absorbing glass] [and] [light and heat reflecting glass]. Submit prior to ordering glass.
1.5 DELIVERY, STORAGE, AND HANDLING
.1 Suitably protect glass products to prevent damage from weather and breakage. Individually wrap accessory materials to protect them from damage.
.2 Store glass vertically, off the ground, on "A" frames, braced or blocked to prevent racking, twisting, or sagging.
.3 Take special care to protect edges of insulating glass units from damage but do not apply tape or other materials to edges.
SPEC NOTE:  Tape applied to edges of sealed units may impair performance of unit or window assembly.
.4 Protect glass products from exposure to moisture or condensation prior to installation.
1.6 CERTIFICATIONS
.1 Insulating glass units shall be certified by the Insulated Glass Manufacturers Alliance (IGMA)
2. Products
2.1 CLEAR FLOAT GLASS
.1 Product:  to CAN/CGSB‑12.3‑M91, glazing quality.
2.2 TINTED/HEAT ABSORBING GLASS
SPEC NOTE:  Refer to Data Sheets.
.1 Product:  to CAN/CGSB‑12.4‑M91 and as follows:
.1 Glass Quality:  Float glass, glazing quality.
.2 Type:
.1 Single Pane Applications:  Type 1.

.2 Insulating Glass Applications:  Type 2.


.3 Class:  [A ‑ Annealed] [B ‑ Heat strengthened].
OR
.3 Class:  C ‑ Tempered, to CAN/CGSB‑12.1‑M90, Category II ‑ 540 J impact resistance.
OR
.3 Class:  D ‑ Laminated, to CAN/CGSB‑12.1‑M90, minimum thickness of laminating film as follows:
.1 Vertical Glazing Applications:  0.75 mm.

.2 Sloped Glazing Applications:  1.50 mm.


.4 Tint:  [Grey] [Bronze] [Blue] [Green].
SPEC NOTE:  Tint of glass will usually predetermine the style and grade to be specified.
.5 Style:  [1 ‑ High, above 70%,] [1A ‑ Intermediate, 56 to 70%,] [2 ‑ Medium, 41 to 55%,] [3 ‑ Low, 25 to 40%,] [3A ‑ Very low, below 25%,] light transmittance.
.6 Grade:  [AA ‑ Very low, below 0.45,] [A ‑ Low, 0.45 to 0.60,] [B ‑ Medium, 0.61 to 0.75,] [C ‑ High, above 0.75,] shading coefficient.
2.3 PATTERNED GLASS
.1 Product:  to CAN/CGSB‑12.13‑M91 and as follows:
.1 Type:  1 ‑ Annealed.
OR
.1 Type:  2 ‑ Tempered, to CAN/CGSB‑12.1‑M90, Category II ‑ 540 J impact resistance.
OR
.1 Type:  3 ‑ Wired, to CAN/CGSB‑12.11‑M90, and as follows:
.1 Wire Mesh Style:  3 ‑ Square.
.2 Style:  [A ‑ Figured one surface] [B ‑ Figured both surfaces].
.3 Surface Pattern and Colour:  [               ].
.4 [Surface Treatment: [Etched] [Sandblasted] [         ].]
.5 [Edge Finish:  [                  ].]
2.4 WIRED SAFETY GLASS
.1 Product:  to CAN/CGSB‑12.11‑M90 and as follows:
.1 Type:  [1 ‑ polished both sides, transparent] [2 ‑ figured, translucent].
.2 Wire Mesh Style:  3 ‑ Square.
SPEC NOTE:  Specify other types and styles of wired glass only on large projects, as they are not stock items.
2.5 LIGHT AND HEAT REFLECTING GLASS
.1 Product:  to CAN/CGSB‑12.10‑M76 and as follows:
.1 Glass Quality:  Float glass, glazing quality.
.2 Type:
.1 Single Pane Applications:  Type 1.
.2 Insulating Glass Applications:  Type 2.
.3 Laminated Glass Applications:  Type 3, to CAN/CGSB‑12.1‑M90, minimum thickness of laminating film as follows:
.1 Vertical Glazing Applications:  0.75 mm.

.2 Sloped Glazing Applications:  1.50 mm.


.3 Class:  [A ‑ Annealed] [B ‑ Heat Strengthened]
SPEC NOTE:  Complete stress analysis to determine whether Heat Strengthened glass is required.
OR
.3 Class:  C ‑ Tempered, to CAN/CGSB‑12.1‑M90, Category II ‑ 540 J impact resistance.
.4 Style:  [1 ‑ High, above 30%,] [2 ‑ Medium, 15 to 30%,] [3 ‑ Low, below 15%,] light transmittance.
.5 Grade:  [A ‑ Low, below 0.15,] [B ‑ Medium, 0.15 to 0.3,] [C ‑ High, above 0.30 to 0.45,] shading coefficient.
.6 Level:  [1 ‑ Low, 2.3 and below,] [2 ‑ High, above 2.3,] thermal transmittance.
.7 Substrate Tint:  [Clear] [Bronze] [Grey] [Blue] [Green].
.8 Aesthetic Effect:  [Bright silver] [Bright green] [Grey] [Bronze] [Blue] [Neutral silver] [Aquamarine] [         ].
SPEC NOTE:  It may, in some cases, be necessary to also specify light and heat reflecting glass by the proprietary method in order to more closely define the desired aesthetic effect. If so, specify names of all similar products by different manufacturers which are deemed acceptable. Obtain Alberta Infrastructure approval to specify less than three products and manufacturers.
.9 Proprietary Products:  one of the following:
.1 [trade name] by [manufacturer's name]
.2 [          ] by [                   ].
.3 [          ] by [                   ].
2.6 CLEAR LAMINATED SAFETY GLASS
.1 Product:  to CAN/CGSB‑12.1‑M90 and as follows:
.1 Type:  1 ‑ Laminated.
.2 Class:  B ‑ Float glass, [annealed] [heat strengthened].
SPEC NOTE:  Heat strengthened glass may be required for single glazed exterior canopies.
.3 Minimum Thickness of Laminating Film:
.1 Vertical Glazing Applications:  0.75 mm.

.2 Sloped Glazing Applications:  1.50 mm.]


2.7 CLEAR TEMPERED SAFETY GLASS
.1 Product:  to CAN/CGSB‑12.1‑M90 and as follows:
.1 Type:  2 ‑ Tempered.
.2 Class:  B - Float Glass.
.3 Category:  II ‑ 540 J impact resistance.
2.8 TRANSPARENT, ONE WAY, MIRRORED GLASS
.1 Product:  to CAN/CGSB‑12.6‑M91 and as follows:
.1 Type:  [1 ‑ Metallic coating applied to clear glass] [2 ‑ Metallic coating applied to [grey] [bronze] [blue] [green] tinted glass].
.2 Class:  A ‑ Regular Glass.
OR
.3 Class:  B ‑ Laminated, to CAN/CGSB‑12.1‑M90, minimum thickness of laminating film as follows:
.1 Vertical Glazing Applications:  0.75 mm.

.2 Sloped Glazing Applications:  1.50 mm.


OR
.3 Class:  C ‑ Tempered, to CAN/CGSB‑12.1‑M90, Category II ‑ 540 J impact resistance.
.4 Form:  1 ‑ Float glass.
2.9 SPANDREL GLASS
.1 Product:  to CAN/CGSB‑12.9‑M91 and as follows:
.1 Type:  1 ‑ Tempered, to CAN/CGSB‑12.1‑M90, Category II ‑ 540 J impact resistance.
OR
.1 Type:  2 ‑ Heat strengthened.
.2 Class:  A ‑ Float glass.
.3 Style:  [1 ‑ ceramic coated] [2 ‑ reflective coated] [3 ‑ organic coated]. [Ceramic coating on number one surface and adhered scrim backing on number two surface] [Ceramic coating on number two surface and adhered scrim backing on same surface].
SPEC NOTE:  Specify a coating and one of the options that include adhered scrim backing.
.4 Form:
.1 Single Pane Applications:  Form M.

.2 Insulating Glass Applications:  Form I.

[.3 Laminated Glass Applications:  Form L.]
SPEC NOTE:  Do not specify Form L, laminated glass, unless there is an unusual risk of pieces falling out of frames e.g. for sloped glazing installations.
.5 Colour:  to match [              ] by [             ].
SPEC NOTE:  Select one colour available from at least three manufacturers. Refer to data sheets.
2.10 LOW EMISSIVITY (LOW E) GLASS
.1 Where so indicated in the Insulating Glass Schedule or elsewhere in the Contract Documents, provide primary glass products with a low emissivity coating as follows:
.1 Type of Metallic Coating:  [Soft, sputtered] [Hard, pyrolitic].
SPEC NOTE:  Soft, sputtered coating is supplied in sealed unit form only, from most manufacturers.
2.11 PLASTIC SAFETY GLAZING
.1 Product:  to CAN/CGSB‑12.12‑M90 and as follows:
.1 Category:  II ‑ 540 J impact resistance.
.2 Material:  [clear] [translucent] [polycarbonate] [acrylic].
.3 Light Transmission:  Minimum [80%] [  ]%.
2.12 INSULATING GLASS UNITS
.1 Provide sealed insulating glass units in accordance with CAN/CGSB‑12.8‑M90, in configurations indicated in Insulating Glass Schedule, and as specified herein.
.2 Manufacture sealed insulating glass units without edge channels or tape, that is, with bare glass edges.
.3 Use two stage seal method of manufacture, as follows:
.1 Primary Seal:  polyisobutylene sealing compound between glass and metal spacer/separator, super spacer bar or TDSE Intercept.
.2 Secondary Seal:  polyurethane, silicone or polysulphide base sealant, filling gap between the two lites of glass at the edge up to the spacer/separator and primary seal.
.4 Spacer/separator to provide continuous vapour barrier between interior of sealed unit and secondary seal.
.5 Sealants for Insulating Glass Units:
.1 Butyl‑polyisobutylene Sealants:  one component, polymer base, solvent curing, to CGSB 19‑GP‑14M, colour to match frame colour.
.2 Polysulphide Base and Polyurethane Base Sealants:  to CAN/CGSB‑19.24‑M90, multi-component, chemical curing, and as follows:
.1 Type:  2 ‑ non‑sag.

.2 Class:  A - glazing.

.3 Movement Capability:  plus and minus 25%.

.4 Colour:  [     ].


.3 Silicone Base Sealants:  to CAN/CGSB‑19.13‑M87, one component, elastomeric, chemical curing, and as follows:
.1 Rheological Properties:  Class 2 - non-sag.

.2 Substrate Class: G - Glass.

.3 Glazing Suitability:  Class A - resists ultraviolet through glass.

.4 Temperature Class:  L - low temperature

.5 Movement Class:  40.

.6 Colour:  [     ].


.4 Do not use polyurethane sealants for insulating glass units having laminated glass with a polyvinyl butyrate interlayer.
SPEC NOTE:  Refer to Data Sheets - Glass Properties and Applications for source of statement re incompatibility.
2.13 GLAZING ACCESSORIES
.1 Setting Blocks:  neoprene, 80 durometer hardness, 100 mm long x 6 mm thick x width required to support full glass thickness for single glazing and full thickness of thermal units.
.2 Spacer Shims:  neoprene, 80 durometer hardness, 75 mm long x minimum 6 mm thick. Do not use metal, plastic, or wood shims.
.3 Glazing Splines and Gaskets:  manufacturer's standard dry neoprene glazing splines and gaskets. Provide keyed type for fixed glazing stops and keyed or roll-in type for removable glazing retaining devices. Except where otherwise specified, colour shall match frame colour.
.4 Glazing Tape:  preformed butyl tape, 10 ‑ 15 durometer hardness, with integral neoprene shim, 80 durometer hardness, paper release, [    ] colour, [   ] mm thick x [    ] mm wide.
3. Execution
3.1 GLAZING GENERAL REQUIREMENTS
.1 Clean sealing surfaces at perimeter of glass and sealing surfaces of rabbets and stop beads before applying tapes, splines or gaskets. Use solvents and cleaning agents recommended by manufacturer of sealing materials.
.2 Install glazing tapes, splines and gaskets uniformly with accurately formed corners and bevels. Ensure that proper contact is made with glass and rabbet interfaces.
.3 Continuously and uniformly compress length of dry glazing splines and gaskets 38‑50 mm per 1200 mm during installation.
.4 Set glass on setting blocks, spaced as recommended by glass manufacturer. Provide at least one setting block at quarter points from each corner.
.5 Centre glass in glazing rabbet to maintain required clearances at perimeter on all four sides.
.6 Use spacers and shims in accordance with glass manufacturer's recommendations.
3.2 CLEANING
.1 Remove dirt, scum, plaster, paint spatter and other harmful or deleterious matter from glass promptly and completely, before they establish tight adhesion.
.2 Use clean water or proprietary glass cleaning solutions that will not damage glass surfaces. Avoid using abrasives, steel wool, razor blades, solvents, alkaline or other harsh cleaning agents.
3.3 PROTECTION
.1 Identify glazed openings immediately following glass installation, using liquid shoe wax in a sponge topped bottle or similar easy-to-remove product.
.2 Protect glass against scratches, pitting and other surface damage.
3.4 INSULATING GLASS SCHEDULE
SPEC NOTE:  Using the format provided, schedule each type of insulating glass unit required for the project. Indicate in other Sections or on the drawings the application/location of each type of unit by referencing the appropriate unit designation number.
SPEC NOTE:  Specify the primary glass product type and thickness required for each lite of each insulating glass unit. Use the terminology of this Section to describe glass types.
SPEC NOTE:  For glass types with a surface treatment, eg. light and heat reflecting glass, spandrel glass, glass types with a "Low E" coating, etc., identify also the surface to which the surface treatment is to be applied using the industry standard numbering system which progresses as follows:  No. 1 surface is exterior surface of exterior lite. No. 2 is interior surface of exterior lite. No. 3 surface is exterior (ie. building exterior) surface of interior lite. No. 4 surface is interior (ie. building interior) surface of interior lite.
SPEC NOTE:  Do not specify thickness of laminated glass to be less than 6 mm.
3.4 INSULATING GLASS SCHEDULE

Unit


No.

Component


Glass Type [and

Surface Treatment]


Thickness


IG1

Exterior Lite

[                              ]


[ ]mm






Airspace




[ ]mm





Interior Lite

[                              ]

[ ]mm



IG2

Exterior Lite

[                              ]

[ ]mm





Airspace




[ ]mm





Interior Lite

[                              ]

[ ]mm



IG3

Exterior Lite

[                              ]

[Low‑E coating on No. 2 surface]




[ ]mm





Airspace




[ ]mm





Interior Lite

[                              ]

[ ]mm



IG4

Exterior Lite

[                              ]

[ ]mm





Airspace




[ ]mm





Interior Lite

[                              ]

[[   ] coating on No. 3 surface]





[ ]mm



IG5












END OF SECTION


BMS Basic Master Specification




Alberta Infrastructure

Master Specification System



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