DRAFT - PKB ATCT CAB Glass SOW.pdf

PARKERSBURG, WV

AIR TRAFFIC CONTROL TOWER

CAB GLASS REPLACEMENT

Remove two fogged pieces of glass at the PKB ATCT and replace with new

REPLACE FOGGED GLASS AT

PARKERSBURG, WV ATCT

DRAFT

GENERAL CONDITIONS 01 11 00 - 1

SECTION 01 11 00 – SUMMARY OF WORK

1.1 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: The project is located at the FAA ATCT on the Mid-Ohio Valley Regional Airport near Parkersburg, WV

B. Project Scope: This project consists of removing two insulating glass window units from the control cab of the Air Traffic Control Tower and replacing them with a new insulating glass window units with the same dimensions and specifications as the original.

C. Work shall include all labor, materials and equipment to complete the following:

1. Remove the existing damaged insulated glass window units and dispose of properly off airport property.

2. Provide and install a new units of the same size and specifications per the attached glass specification.

3. Provide warranty per specification section 08 88 58

4. The contractor will be responsible to take accurate measurements of the existing glass panes and providing and installing new glass units

5. Height to the top of the tower glass is 60 feet above ground level.

1.2 WORK SCHEDULE

A. Work will be done during normal working hours of 8:00 AM to 4:30 PM

B. The notice to proceed will be issued when the contractor demonstrates, by virtue of material and equipment on site, that they are able to commence the work in earnest. Work will continue during the stated normal working hours until the work is complete. Requests for longer daily hours or weekend work will be considered if deemed necessary. Notice will be given to the FAA at least 48 hours in advance of any request to extend the normal working hours.

1.3 COORDINATION WITH FACILITY OPERATIONS/ACCESS

A. Contractor shall closely coordinate all work activities with the Contracting Officer’s Representative (COR). Contractor is advised that the work area is located at an air traffic control facility. Construction work on the premises must be closely coordinated with the COR as to not have an adverse impact on the operation of air traffic. Workers will be continually escorted by FAA personnel.

1.4 ONGOING MAINTENANCE AND OPERATIONS AND WORK UNDER OTHER

CONTRACTS

A. Contractor is made aware of other ongoing operations, other construction contracts and maintenance activities at this facility. All activities have to be closely coordinated with the COR as to not impact the operation of the center.

DRAFT

GENERAL CONDITIONS 01 11 00 - 2

B. Cooperate fully with separate contractors and maintenance entities so work on those contracts may be carried out smoothly, without interfering with or delaying work under this Contract.

1.5 IMPACT TO FACILITY

A. Contractor is made aware that this facility is responsible for the control and navigation of air traffic. Contract work and workers must operate in a manner which will not have any adverse impact to the operation of this facility. Contractor shall assure the complete protection to the existing equipment. Closely coordinate all proposed activities with the COR.

1.6 PROTECTION DURING CONSTRUCTION

A. Contractor is responsible for providing the proper protection for the existing building and equipment in the surrounding areas to where the work will be performed.

1.7 TEMPORARY FACILITIES

A. The Contractor shall provide temporary facilities, as required, to include but not limited to illumination for construction needs, temporary platforms and scaffolds, ensuring an absolute safe working environment. All work shall comply with current OSHA standards and FAA requirements.

1.8

1.9

B. The contractor shall be permitted to use facility utility service power after close coordination with the COR for the use of small power tools.

C. Contractor is advised that restroom facilities are not available for the contractors use at this facility.

D. Contractor is advised that running water is available at this facility for use by the contractor.

CLEANUP AND RESTORATION

A. Contractor is responsible for maintaining the work site in a clean and safe condition during the work shift as well as after work hours. The contractor shall restore the site to original condition upon completion of the project.

PERMITS

A. No permits will be required from the contractor for the work.

END OF SECTION 01 11 00

DRAFT

ATCT CAB GLAZING 08 88 58 - 3

SECTION 08 88 58 – ATCT CAB GLAZING

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes glazing for the following products:

1. Glazing at the Control Tower Cab.

1.2 REFERENCE STANDARDS

A. American Architectural Manufacturers Association (AAMA)

1. 800: Voluntary Specifications and Test Methods for Sealants.

2. SF1: Dense Rubber-Like Compression Gasket Materials.

B. American National Standards Institute (ANSI)

1. Z97.1: Glazing Materials Used In Buildings-Safety Performance Specifications and Method of Test.

C. American Society for Testing and Materials (ASTM)

1. ASTM C 1036 Flat Glass

2. ASTM C 1076 Standard Test Method for determining Compatibility of Liquid-

Applied Sealants with Accessories Used in Structural Glazing Systems.

3. ASTM C 1184 Standard Specification for Structural Silicone Sealants.

4. ASTM C 1401 Standard Guide for Structural Sealant Glazing.

5. ASTM C 864 Standard Specification for Dense Elastomeric Compression Seal

Gaskets, Setting Blocks, and Spacers.

6. ASTM D 395 Standard Test Methods for Rubber Property-Compression Set.

7. ASTM E 2461 Standard practice for Determining the Thickness of Glass in

Airport Traffic Control Tower Cabs.

8. ASTM E 773 Standard Test Method for Accelerated Weathering of Sealed

Insulating Glass Units.

CI. Glass Association of North America (GANA)

1. Glazing Manual.

2. Sealant Manual.

DRAFT

ATCT CAB GLAZING 08 88 58 - 4

3.

CII. Fenestration and Glazing Manufacturers Alliance (FGIA)

1. A1202 Commercial Insulating Glass Dimensional Tolerances.

2. TB3000 Glazing Guidelines for Sealed Insulating Glass Units.

1.3 DEFINITIONS

A. Manufacturer: Where used in this Section to refer to a firm that produces primary glass or fabricated glass as defined in the referenced glazing standard.

B. Deterioration of Coated Glass: Defects developed from normal use that are attributed to the manufacturing process and not to causes other than glass breakage and practices for maintaining and cleaning coated glass contrary to manufacturer's directions. Defects include peeling, cracking, and other indications of deterioration in metallic coating.

C. Deterioration of Insulating Glass: Failure of the hermetic seal under normal use due to causes other than glass breakage and improper practices for maintaining, and cleaning insulating glass. Evidence of failure is the obstruction of vision by dust, moisture, or film on the interior surfaces of glass. Improper practices for maintaining and cleaning glass do not comply with the manufacturer's directions.

1.4 SYSTEM PERFORMANCE REQUIREMENTS

A. General: Provide glazing systems that are produced, fabricated, and installed to withstand normal thermal movement, wind loading, and impact loading (where applicable), without failure including loss or glass breakage attributable to the following: defective manufacture, fabrication, and installation; failure of sealants or gaskets to remain watertight and airtight; deterioration of glazing materials; and other defects in construction.

B. Normal thermal movement results from the following maximum change (range) in ambient and surface temperatures acting on glass-framing members and glazing components. Base engineering calculation on materials' actual surface temperatures due to both solar heat gain and nighttime sky heat loss.

1. Temperature Change (Range): 120 F deg, ambient; 180 F deg, material surfaces.

1.5 SUBMITTALS

A. Product data for each glass product and glazing material indicated. Submit manufacturer of the glass lites and the manufacturer of the insulating units. Submit manufacturer’s descriptive product data, handling and storage recommendations, installation instructions, and cleaning instructions from both the manufacturer of the glass lites and the manufacturers of the insulating units.

1. Insulating Glass.

DRAFT

ATCT CAB GLAZING 08 88 58 - 5

2. Glazing Accessories.

B. Certifications: Provide the following.

1. Product Certificates: Signed by glazing materials manufacturers certifying that their products comply with specified requirements. Submit certificates to indicate that materials meet specified requirements. Permanent labels on glass are not allowed.

C. Fall Protection Plan

1. Working on and around the cab catwalk or roofing areas, and exterior tower shell, cab requires a fall protection safety plan and a site specific rescue plan. Plan as a minimum shall specify in detail the fall protection training requirement and procedures for individuals performing the work and list all PPE and gear that will be used. All work on cat walk and roof top, shall be protected from falling while performing the glass removal and replacement. Provide Safety Operation Procedure for working on the Cat walk and on the Boom Lift Basket. Provide the safety inspection of all equipment that will be used on this Job before starting the project.

Qualified Trained Fall Protection individual shall be present from contractor to supervise the project. The contractor shall comply with OSHA 29 CFR 1926.550 which applies to hoisting and rigging when hauling the window unit and any other hoisting associated work. Any scaffolding erected shall be constructed, maintained and operated in accordance with the applicable federal, state and local rules and regulations.

1.6 QUALITY ASSURANCE

A. Glazing Publications: Comply with published recommendations of glass product manufacturers and organizations identified in “REFERENCED STANDARDS” Article of this section, except where more stringent requirements are indicated.

B. Insulating Glass Certification Program: Provide insulating glass units permanently marked either on spacers or at least one component lite of units with appropriate certification label of inspecting and testing agency indicated below:

1. Insulating Glass Certification Council (IGCC).

2. Associated Laboratories, Inc. (ALI).

3. National Certified Testing Laboratories (NCTL).

C. Glazier Qualifications: Engage an experienced glazier who has completed glazing similar in material, design, and extent to that indicated for Project with a record of successful in-service performance.

D. Single-Source Responsibility for Glass: Obtain glass from one source.

E. Single-Source Responsibility for Glazing Accessories: Obtain glazing accessories from one source for each product and installation method indicated.

DRAFT

ATCT CAB GLAZING 08 88 58 - 6

1.7 DELIVERY, STORAGE, AND HANDLING

A. Prior to delivery all the cab glass shall be boxed and crated for shipping. The cab glass shall be shipped to the site in a vertical position and stored in a vertical position against a sturdy support at an angle of approximately 7 degrees from vertical.

B. Deliver products to the site in unopened containers, labeled plainly with manufacturer’s names and brands.

C. Store glass and setting materials in safe, dry locations with adequate ventilation free from heavy dust, not subject to combustion products or sources of water and that shall permit easy access for inspection and handling. Do not unpack until needed for installation.

D. Deliver caulking and sealing compounds to the jobsite in sealed containers labeled to show the designated name, formula, or specification number; lot number, color, date of manufacturer, shelf life, and curing time when applicable.

E. Handle and install materials in a manner that will protect them from damage.

F. Unpack glass from the front of the case or container and avoid sliding the glass against itself or any uncushioned materials. Stack individual lites on edge using clean, cushioned pads placed at the quarter points of the bottom edge. Protect all edges from impact and use a clean dry separating material.

1.8 PROJECT CONDITIONS

A. Environmental Conditions: Do not start glazing work until the outdoor temperature is above 40 degrees F and rising, unless procedures recommended by the glass manufacturer and approved by the COR are made to warm the glass and rabbet surfaces. Provide ventilation to prevent condensation of moisture on glazing work during installation. Do not perform glazing work during damp or rainy weather.

1.2 WARRANTY

A. Manufacturer's Warranty on Insulating Glass: Submit written warranty signed by manufacturer of insulating glass agreeing to furnish replacements for insulating glass units that deteriorate as defined in "Definitions" article, f.o.b. point of manufacture, freight allowed project site, within specified warranty period indicated below. Warranty covers only deterioration due to normal conditions of use and not to handling, installing, protecting, and maintaining practices contrary to glass manufacturer's published instructions.

1. Warranty Period: Manufacturer's standard but not less than 10 years after date of Final Acceptance by the FAA.

B. Provide new units for any units failing to comply with terms of this warranty within 45 working days after receipt of notice from the Government.

DRAFT

ATCT CAB GLAZING 08 88 58 - 7

PART 2 - PRODUCTS

2.1 GLASS

A. Glass thickness: the insulated glass unit shall be comprised of two 1/4" annealed float glass separated by ½" insulating air space. The cab glass is not to be tinted, tempered, heat strengthened, or chemically strengthened. Glass clad polycarbonate is not acceptable. No on-site grinding or buffing of the glass is allowed. Glass edges shall be clean cut, undamaged, and flat ground.

B. Annealed Glass: ASTM C 1036, Type I, Class 1 for clear, and Q3 for glass thicknesses 1/4- inch or less and for glass thicknesses greater than 1/4-inch ASTM C 1036, Type I, Class 1 with the following qualities:

1. Allowable point blemish size and distribution: Less than 1.0 mm with allowed minimum of 1500 mm (60-inch) separation. No others allowed.

2. Allowable linear blemish size and distribution: Faint less than 0.75 mm with allowed minimum of 1500 mm (60-inch) separation. No others allowed.

3. Allowable shell chip size and distribution: Chip depth and chip width less than or equal to 3 mm. Chip length less than or equal to 6 mm.

4. Allowable scratches: None.

C. Insulated Annealed Glass Units: Provide 1 inch insulated clear glass units. IGMA A1202 and IGMA TB-3000, fabricated of two lites of 1/4-inch monolithic annealed glass separated by a 1/2-inch dehydrated air space, hermetically sealed. Metal separator color shall be dark bronze or black. Units shall be double sealed. Primary seal shall be polyisobutylene; secondary seal shall be polyurethane or silicone. Within the bottom 1/2 of a vertical edge in each unit.

2.2 SETTING MATERIALS

A Provide as specified in the GANA Glazing Manual, IGMA TB3000, IGMA TB-3001, and manufacturer's recommendations, unless specified otherwise herein. Do not use metal sash putty, nonskinning compounds, nonresilient pre-formed sealers, or impregnated pre-formed gaskets. Materials exposed to view and unpainted shall be gray or neutral color.

B. Elastomeric Sealant. ASTM C 920, Type S or M, Grade NS, Class 12.5, Use G. Use for channel or stop glazing sash. Sealant shall be chemically compatible with setting blocks, edge blocks, and sealing tapes, with sealants used in manufacture of insulating glass units.

C. Pre-formed Channels: Neoprene, vinyl, or rubber, as recommended by the glass manufacturer for the particular condition.

DRAFT

ATCT CAB GLAZING 08 88 58 - 8

D. Sealing Tapes: Pre-formed, semi-solid, polymeric-based material of proper size and compressibility for the particular condition. Use only where glazing rabbet is designed for tape and tape is recommended by the glass or sealant manufacturer. Provide spacer shims for use with compressible tapes. Tapes shall be chemically compatible with the product being set.

E. Setting Blocks and Edge Blocks: Lead or neoprene of 80 to 90 Shore "A" durometer hardness, chemically compatible with sealants used, and of sizes recommended by GANA and the glass manufacturer.

F. Accessories: Provide as required for a complete installation, including glazing points, clips, shims, angles, and spacer strips. Provide non-corroding metal accessories.

Provide primer- sealers and cleaners as recommended by the glass and sealant manufacturers.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine glass framing, with glazier present, for compliance with the following:

1. Manufacturing and installation tolerances, including those for size, squareness, offsets at corners.

2. Presence and functioning of weep system.

3. Minimum required face or edge clearances.

4. Effective sealing between joints of glass-framing members.

B. Do not proceed with glazing until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Preparation, unless otherwise specified or approved, shall conform to the applicable recommendations in the GANA, IGMA, and the glass manufacturer’s recommendations.

Determine the sizes to provide the required edge clearances by measuring the actual opening to receive the glass.

B. Grind smooth in the shop glass edges that will be exposed in finish work such as butt glazing.

C. Leave removable labels in place until the installation is approved, except remove applied labels on heat-absorbing glass and on insulating glass units as soon as glass is installed.

3.3 GLASS SETTING

A. Glazing, unless otherwise specified or approved, shall conform to applicable recommendations in the GANA, IGMA, and the glass manufacturer's recommendations.

Handle and install glazing materials in accordance with the glass manufacturer's instructions. Use beads or stops which are furnished with items to be glazed to secure the glass in place. Avoid contact of glass edges with framing members and do not rest the

REPLACE FOGGED GLASS AT DRAFT

ATCT CAB GLAZING 08 88 58 - 9

glass on any uncushioned surfaces. Avoid rotating any glass on the corners. Inspect glass edges prior to installation. Glass of questionable quality should not be installed without approval of the Contracting Officer's Technical Representative.

B. Comply with the manufacturer's warranty and written instructions, except as indicated.

Secure glass in place with bolts and spring clips. The minimum clearance between bolts and edge of glass unit shall be 3/16-inch. The glass shall be edged with 3/16-inch thick continuous neoprene, vinyl, or other approved material. Trim edging after installation.

The channel shapes or strips shall be firmly held against the glass by the spring action of the extruded metal moldings or metal bars. Resilient setting blocks, spacer strips, clips, bolts, washers, angles, applicable glazing compound, and resilient channels or cemented-on materials shall be as recommended in the written instructions of the glass manufacturer which shall be submitted and approved prior to shipping the cab glass.

C. Do not grind, nip, or cut edges or corners of units after the units have left the factory.

Springing, forcing, or twisting of units during setting will not be permitted. Handle units so as not to strike frames or other objects. Installation shall conform to applicable recommendations of IGMA TB-3000 and IGMA TB-3001.

D. Seismic Areas. Provide the following.

1. Glass Corner and Edge Cushioning: Padding consisting of 50-70 shore durometer hardness material should be placed in the glazing channel or on the glass edges/corners to avoid any glass to frame contact.

2. Gasket Performance: Gasket should have a positive lock-in method so that gasket will not disengage from metal framing system during up and down and side-to-side movement.

3. Setting Blocks and Supports: Permanently mount setting block and supports to frame using a compatible sealant. Use anti-walk blocks.

E. Tolerances and Clearance of Units: Design to prevent the transfer of stress in the setting frames to the glass. Springing, twisting, or forcing of units during setting will not be permitted.

3.4 GLAZING, GENERAL

A. Comply with combined recommendations of manufacturers of glass, sealants, gaskets, and other glazing materials, except where more stringent requirements are indicated, including those in referenced glazing publications.

B. Glazing channel dimensions as indicated on Drawings provide necessary bite on glass, minimum edge and face clearances, and adequate sealant thicknesses, with reasonable tolerances. Adjust as required by Project conditions during installation.

C. Protect glass from edge damage during handling and installation as follows:

1. Use a rolling block in rotating glass units to prevent damage to glass corners. Do not impact glass with metal framing. Use suction cups to shift glass units within openings; do not raise or drift glass with a pry bar. Rotate glass lites with flares or

REPLACE FOGGED GLASS AT DRAFT

ATCT CAB GLAZING 08 88 58 -

bevels on bottom horizontal edges so edges are located at top of opening, unless otherwise indicated by manufacturer's label.

2. Remove damaged glass from project site and legally dispose of off-site. Damaged glass is glass with edge damage or other imperfections that, when installed, weaken glass and impair performance and appearance.

D. Apply primers to joint surfaces where required for adhesion of sealants, as determined by preconstruction sealant-substrate testing.

E. Install elastomeric setting blocks in sill rabbets, sized and located to comply with referenced glazing standard, unless otherwise required by glass manufacturer. Set blocks in thin course of compatible sealant suitable for heel bead.

F. Do not exceed edge pressures stipulated by glass manufacturers for installing glass lites.

Provide spacers for glass sizes larger than 50 united inches (length plus height) as follows:

1. Locate spacers inside, outside, and directly opposite each other. Install correct size and spacing to preserve required face clearances, except where gaskets and glazing tapes are used that have demonstrated ability to maintain required face clearances and comply with system performance requirements.

2. Provide 1/8-inch minimum bite of spacers on glass and use thickness equal to sealant width. With glazing tape, use thickness slightly less than final compressed thickness of tape.

G. Provide edge blocking to comply with requirements of referenced glazing publications, unless otherwise required by glass manufacturer.

H. Set glass lites in each series with uniform pattern, draw, bow, and similar characteristics.

3.4 PROTECTION

A. Protect exterior glass from breakage immediately after installation by attaching crossed streamers to framing held away from glass. Do not apply markers to glass surface. Do not remove labels until after final acceptance except remove labels on heat-absorbing glass and on insulating glass units as soon as the glass is installed. Clean surfaces.

B. Follow recommendations of GANA Glazing Manual and the glass manufacturer. Protect the glass from weld splatter by using plywood or heavy tarpaulins. Do not place insulation over the glass for protection or keep shading material on the glass because excess thermal buildup could result in glass breakage. Do not allow materials to be stored or placed in contact with the glass. Protect the glass with a sheet of clear plastic.

3.5 CLEANING

A. Follow recommendations of GANA Glazing Manual and the glass manufacturer. Clean glass and metal frequently during construction. Clean glass surfaces and remove labels, paint spots, putty, and other defacement as required to prevent staining. Glass shall be cleaned with a soft, clean, grit-free cloth, mild soap, detergent, or slightly acidic cleaning solution. Rinse immediately after cleaning with water and promptly remove excess rinse water with a clean squeegee. Razor blades or other sharp objects shall not be used to

DRAFT

ATCT CAB GLAZING 08 88 58 -

clean glass surfaces. Glass shall be clean at the time the Work is accepted.

END OF SECTION 08 88 58