Addendum 4--RFP-KTHFS-2026-002--Beatty Health Center--2026-10-02.pdf

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 1

KLAMATH TRIBAL HEALTH & FAMILY SERVICES

3949 S. 6th St.

Klamath Falls, OR 97603

Addendum #4

Project: RFP-KTHFS-2026-002

BEATTY HEALTH CENTER PROJECT

FINAL DATE FOR RFP QUESTIONS:

Thursday, October 1, 2026 @ 12:00 p.m.

SUBMISSION DEADLINE: Wednesday, October 7, 2026

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 2

Table of Contents

Summary 3

Addendum 4 Updates 4

Section 08 80 00 – Glazing 6

Section 23 33 00 – Air Duct Accessories 13

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 3

SUMMARY

1. PROJECT

1.1 Project Name: RFP-KTHFS-2026-002 – Beatty Health Center Project

1.2 The project consists of the construction of a new 4,064 SF health center in Beatty, Oregon.

The project consists of a community room, a workout room, medical office, dental office, behavioral health office, lab room, equipment sterilization room, restrooms, showers, and a breakroom.

2. WORK BY KTHFS

2.1 KTHFS will supply the following for installation by the supplier of the equipment

2.1.1 All furnishings, furniture, and moveable equipment

2.1.2 Exercise equipment

2.1.3 Restroom accessories, dispensers (i.e., soap dispensers, towel dispensers, seat protection dispensers, feminine hygiene dispensers, toilet paper dispensers

2.1.4 Kitchen appliances.

2.1.5 Medical and dental equipment

2.1.6 Artwork or wall-mounted equipment

2.1.7 Health assessment equipment

2.1.8 If an item is not attached to the structure, KTHFS is providing unless noted otherwise.

3. CONTRACTOR USE OF SITE AND PREMISES

3.1 Construction operations: Limited to areas noted on drawings.

3.1.1 Locate and conduct construction activities in ways that limit disturbance to site.

3.2 Arrange use of site and premises to allow:

3.2.1 Work by others

3.2.2 Work by KTHFS

3.3 Provide access to and from site as required by law and/or by KTHFS:

3.3.1 Do not obstruct roadways, sidewalks, or other public ways.

3.4 Utility outages and shutdown:

3.4.1 Prevent accidental disruption of utility services or other facilities.

4. WORK SEQUENCE

4.1 Coordinate construction schedule and operations with KTHFS Facilities/Security Director and KTHFS Health Project Manager.

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 4

ADDENDUM NO. 004

TO ALL PLAN HOLDERS:

This Addendum forms a part of the Contract Documents and modifies the original bidding documents released for bid preparation. Please notify everyone concerned as your sub-contractors and suppliers of the issuance and contents of this addendum prior to date of bid opening.

THE FINAL DATE RFP QUESTIONS WILL BE ACCEPTED IS THURSDAY, OCTOBER 1, 2026, AT 12:00 P.M.

QUESTIONS AND CLARIFICATIONS:

Q1: Spec 23 33 00 Air Duct Accessories, 2.08, D references spec section 23 09 00 Instrumentation and

Controls for HVAC as regards actuators for control dampers (BD-1. ZD-1, ZD-2, ZD-3). I am not finding that spec section in the book. Can this be provided?

A1: All controls are packaged on this project so spec section 23 09 00 Instrumentation and Controls for HVAC is irrelevant, and the reference has been removed.

Q2: I noticed the altitude is up to 5000’, was this altitude taken into consideration when sizing the generators? Or are you looking for us to upsize and derate our gens based on that elevation and kW provided in the spec?

A2: No need to upsize and derate generators.

Q3: The one-line has the 2000A ATS as NEMA 3 but the spec indicates NEMA 1. Could you please confirm which is needed for the application?

A3: NEMA 3R is required.

Q4: 100KAIC is specifically called out for the 2000A ATS. Is this accurate or is 65kAIC acceptable for the

2000A ATS?

A4: No, ATS must be 100kAIC.

Q5: At both projects there is an RTU which uses a zoning system, but no control protocol or system is identified in the specifications. Please have the design team identify the controls to be used for the systems that incorporate zone dampers.

A5: We would recommend Prolon for any VVT controls, but we don’t have a spec or sequence for this as it is standard off the shelf equipment. This would be by the mechanical subcontractor with whichever equipment they submit.

Q6: The subcontractors for Data are saying they don’t see any specs for Data outlets and the legend calls for rough-in only. Could you clarify if we need to include Cat 6 installation and termination in our proposal?

A6: We are showing rough-in only, no CAT6 cabling or terminations. The cabling and terminations are done by KTHFS or KTHFS vendor for their systems.

Q7: Calling out for security film. The entrance makes sense but the “Admin office areas”, there isn’t anything labeled like that on the floor plan. Can they clearly identify where this goes?

A7: Security film is not included in the project. Please disregard. This line item has been removed from the Glazing spec.

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 5

Q8: It says in the ‘gymnasium windows’. Do they mean fitness room? And then this would be all (total of four) exterior windows?

A8: No digital ceramic printing or graphics are included in the project. Please disregard. This line item has been removed from the Glazing spec

SPECIFICATIONS:

Reference: Description:

Section 08 80 00 Glazing Addendum #4 (REPLACED) Section 23 33 00 Air Duct Accessories Addendum #4 (REPLACED)

RFP-KTHFS-2026-002 – ADDENDUM #4 – Beatty Health Center Project Page 6

SECTION 08 80 00 – GLAZING

1. PART 1 – GENERAL

1.1. Section includes:

1.1.1. Insulating glass units.

1.1.2. Glazing units.

1.1.3. Fire-rated glazing units

1.1.4. Plastic films.

1.1.5. Direct to Glass Printing

1.1.6. Glazing compounds.

1.2. Related requirements

1.2.1. Section 072500 - Weather Barriers.

1.2.2. Section 079200 - Joint Sealants: Sealants for other than glazing purposes.

1.2.3. Section 088300 - Mirrors.

1.3. Reference standards

1.3.1. 16 CFR 1201 - Safety Standard for Architectural Glazing Materials; Current Edition.

1.3.2. ANSI Z97.1 - American National Standard for Safety Glazing Materials Used in Buildings –

Safety Performance Specifications and Methods of Test; 2026.

1.3.3. ASCE 7 - Minimum Design Loads and Associated Criteria for Buildings and Other

Structures; Most Recent Edition Cited by Referring Code or Reference Standard.

1.3.4. ASTM C864 - Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers; 2005 (Reapproved 2026).

1.3.5. ASTM C1036 - Standard Specification for Flat Glass; 2025.

1.3.6. ASTM C1172 - Standard Specification for Laminated Architectural Flat Glass; 2024, with

Editorial Revision (2025).

1.3.7. ASTM C1193 - Standard Guide for Use of Joint Sealants; 2025.

1.3.8. ASTM E1300 - Standard Practice for Determining Load Resistance of Glass in Buildings;

2024.

1.3.9. GANA (SM) - GANA Sealant Manual; 2008.

1.3.10. ITS (DIR) - Directory of Listed Products; Current Edition.

1.3.11. NFRC 100 - Procedure for Determining Fenestration Product U-Factors; 2026.

1.3.12. NFRC 200 - Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence; 2023.

1.3.13. NFRC 300 - Test Method for Determining the Solar Optical Properties of Glazing

Materials and Systems; 2026.

1.3.14. UL (DIR) - Online Certifications Directory; Current Edition.

1.4. Administrative Requirements

1.4.1. Preinstallation Meeting: Convene a preinstallation meeting one week before starting work of this section; require attendance by each of the affected installers.

1.5. Submittals

1.5.1. See RFP-KTHFS-2026-002—Beatty Health Center RFP Packet, for submittal procedures.

1.5.2. Product Data on Insulating Glass Unit, Glazing Unit, and Plastic Film Glazing Types:

Provide structural, physical and environmental characteristics, size limitations, special handling and installation requirements.

1.5.3. Product Data on Glazing Compounds and Accessories: Provide chemical, functional, and environmental characteristics, limitations, special application requirements, and identify available colors.

1.5.4. Samples: Submit two samples 12 by 12 inch (304.8 by 304.8 mm) in size of glass units.

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1.5.5. Warranty Documentation: Submit manufacturer warranty and ensure that forms have been completed in Owner's name and registered with manufacturer.

1.6. Quality Assurance

1.6.1. Perform Work in accordance with GANA (GM), GANA (SM), GANA (LGRM), and IGMA

TM-3000 for glazing installation methods. Maintain one copy on site.

1.6.2. Manufacturer Qualifications: Company specializing in manufacturing the products specified in this section with minimum ten years of documented experience.

1.6.3. Installer Qualifications: Company specializing in performing work of type specified, with minimum 3 years of documented experience.

1.7. Mock-Ups

1.7.1. See Section 014000 - Quality Requirements for additional requirements.

1.7.2. Provide mock-up of building corner with assembled window, including glass and air barrier and vapor retarder seal.

1.7.3. Provide mock-up of printed glass design on specified glass for approval and/or revisions.

1.7.4. Locate as indicated on drawings.

1.7.5. Mock-ups may remain as part of the Work.

1.8. Field Conditions

1.8.1. Do not install glazing when ambient temperature is less than 40 degrees F (4 degrees C).

1.8.2. Maintain minimum ambient temperature before, during and 24 hours after installation of glazing compounds.

1.9. Warranty

1.9.1. See Section 017800 - Closeout Submittals for additional warranty requirements.

1.9.2. Insulating Glass Units: Provide a five (5) year manufacturer warranty to include coverage for seal failure, interpane dusting or misting, including providing products to replace failed units.

1.9.3. Manufacturer agrees to replace insulating-glass units that deteriorate within specified warranty period. Deterioration of insulating glass is defined as failure of hermetic seal under normal use that is not attributed to glass breakage or to maintaining and cleaning insulating glass contrary to manufacturer's written instructions. Evidence of failure is the obstruction of vision by dust, moisture, or film on interior surfaces of glass.

1.9.4. Manufacturer agrees to replace coated glass that deteriorates within specified warranty period. Deterioration of coated glass is defined as defects developed from normal use that are not attributed to glass breakage or to maintaining and cleaning coated glass contrary to manufacturer's written instructions. Defects include peeling, cracking, and other indications of deterioration in coating.

1.9.5. Laminated Glass: Provide a five (5) year manufacturer warranty to include coverage for delamination, including providing products to replace failed units.

1.9.6. Manufacturer agrees to replace laminated-glass units that deteriorate within specified warranty period. Deterioration of laminated glass is defined as defects developed from normal use that are not attributed to glass breakage or to maintaining and cleaning laminated glass contrary to manufacturer's written instructions. Defects include edge separation, delamination materially obstructing vision through glass, and blemishes exceeding those allowed by referenced laminated-glass standard.

2. PART 2 – PRODUCTS

2.1. Manufacturers

2.1.1. Float Glass Manufacturers:

2.1.1.1. Guardian Glass, LLC; <>: www.guardianglass.com/#sle.

2.1.1.2. PPG Industries, Inc: www.ppgideascapes.com.

2.1.2. Laminated Glass Manufacturers:

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2.1.2.1. Cardinal Glass Industries: www.cardinalcorp.com.

2.1.2.2. Viracon, Architectural Glass segment of Apogee Enterprises, Inc:

www.viracon.com.

2.1.2.3. Substitutions: See Section 016000 - Product Requirements.

2.2. PERFORMANCE REQUIREMENTS - EXTERIOR GLAZING ASSEMBLIES

2.2.1. Provide type and thickness of exterior glazing assemblies to support assembly dead loads, and to withstand live loads caused by positive and negative wind pressure acting normal to plane of glass.

2.2.1.1. Design Pressure: Calculated in accordance with ASCE 7.

2.2.1.2. Comply with ASTM E1300 for design load resistance of glass type, thickness, dimensions, and maximum lateral deflection of supported glass.

2.2.1.3. Provide glass edge support system sufficiently stiff to limit the lateral deflection of supported glass edges to less than 1/175 of their lengths under specified design load.

2.2.1.4. Glass thicknesses listed are minimum.

2.2.2. Weather-Resistive Barrier Seals: Provide completed assemblies that maintain continuity of building enclosure water-resistive barrier, vapor retarder, and/or air barrier.

2.2.2.1. In conjunction with weather barrier related materials described in other sections, as follows:

2.2.3. Thermal and Optical Performance: Provide exterior glazing products with performance properties as indicated. Performance properties are in accordance with manufacturer's published data as determined with the following procedures and/or test methods:

2.2.3.1. Center of Glass U-Factor: Comply with NFRC 100 using Lawrence Berkeley National Laboratory (LBNL) WINDOW 7 computer program.

2.2.3.2. Center of Glass Solar Heat Gain Coefficient (SHGC): Comply with NFRC 200 using Lawrence Berkeley National Laboratory (LBNL) WINDOW 7 computer program.

2.2.3.3. Solar Optical Properties: Comply with NFRC 300 test method.

2.3. Glass Materials

2.3.1. Float Glass: Provide float glass-based glazing unless otherwise indicated.

2.3.1.1. Annealed Type: ASTM C1036, Type I - Transparent Flat, Class 1 - Clear, Quality -

Q3.

2.3.1.2. Patterned Glass Type: ASTM C1036, Type II - Patterned Flat Glass, Quality - Q5, Form 3 - Patterned glass, with color and performance characteristics as indicated.

2.3.2. Fully Tempered Float Glass: ASTM C 1048, Kind FT (fully tempered), Condition A (uncoated) unless otherwise indicated, Type I, Class 1 (clear) or Class 2 (tinted) as indicated, Quality-Q3.

2.3.2.1. Fabrication Process: By horizontal (roller-hearth) process with roll-wave distortion parallel to bottom edge of glass as installed unless otherwise specified.

2.3.2.2. Optical Distortion Limits: Maximum peak-to-valley roll wave 0.005” (0.127mm) in the central area of the glass lite, excluding the leading and trailing 12”; per

ASTM C 1651.

2.3.2.3. Maximum center-kink of 0.001” (0.025 mm) when roll wave is measured over the surface of the glass perpendicular to the direction of travel through the tempering furnace.

2.3.2.4. Maximum localized bow (warp) per lite shall be 1/32” (0.79 mm) per lineal foot, one-half of the ASTM C 1048 allowance. Maximum overall bow (warp) per lite shall also be one-half of the ASTM C 1048 allowance.

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2.3.2.5. Fully tempered glass shall only be used where required by code for safety, thermal stress, load or other specification requirements. Heat-strengthened glass should be used unless tempered glass is specifically required. All tempered glass shall conform with ANSI Z97.1 and CPSC 16 CFR 1201.

2.3.3. Heat-Strengthened Float Glass: ASTM C 1048, Kind HS (heat strengthened), Condition A (uncoated) unless otherwise indicated, Type I, Class 1 (clear) or Class 2 (tinted) as indicated, Quality-Q3.

2.3.3.1. Fabrication Process: By horizontal (roller-hearth) process with roll-wave distortion parallel to bottom edge of glass as installed unless otherwise specified.

2.3.3.2. Optical Distortion Limits: Maximum peak-to-valley roll wave 0.005” (0.127mm) in the central area of the glass lite, excluding the leading and trailing 12”; per

ASTM C 1651.

2.3.3.3. Maximum center-kink of 0.001” (0.025 mm) when roll wave is measured over the surface of the glass perpendicular to the direction of travel through the tempering furnace.

2.3.3.4. Maximum localized bow (warp) per lite shall be 1/32” (0.79 mm) per lineal foot, one-half of the ASTM C 1048 allowance. Maximum overall bow (warp) per lite shall also be one-half of the ASTM C 1048 allowance.

2.3.3.5. Heat-strengthened glass shall be used at east, south and west facing exterior windows and doors unless tempered glass is specifically required.

2.3.4. Laminated Glass: Float glass laminated in accordance with ASTM C1172.

2.3.4.1. Laminated Safety Glass: Complies with ANSI Z97.1 - Class B or 16 CFR 1201 –

Category I impact test requirements.

2.3.4.2. Polyvinyl Butyral (PVB) Interlayer: 0.030 inch (0.762 mm) thick, minimum.

2.3.5. Fire Rated Safety Glazing: Composed of multiple sheets of safety glazing with high visible light transmission laminated with a fire-resistant intumescent interlayer.

2.4. BASIS OF DESIGN – INSULATING GLASS UNITS

2.4.1. Basis of Design - Insulating Glass Units: Vision glazing, with low-e coating.

2.4.1.1. Applications: Exterior insulating glass glazing unless otherwise indicated.

2.4.1.2. Space between lites filled with argon.

2.4.1.3. Total Thickness: 1 inch (25.4 mm).

2.4.1.4. Visible Light Transmittance (VLT): 70 percent, nominal.

2.4.1.5. Solar Heat Gain Coefficient (SHGC): .39, nominal.

2.4.1.6. Glazing Method: Dry glazing method, gasket glazing.

2.4.1.7. Metal Edge Spacers: Aluminum, mitered and spigoted corners.

2.4.1.8. Spacer Color: Match window frames.

2.4.1.9. Edge Seal:

2.4.1.9.1. Dual-Sealed System: Provide polyisobutylene sealant as primary seal applied between spacer and glass panes, and silicone, polysulfide, or polyurethane sealant as secondary seal applied around perimeter.

2.4.1.10. Color: Black.

2.4.1.11. Purge interpane space with dry air, hermetically sealed.

2.4.1.12. Basis of Design - Vitro Architectural Glass (formerly PPG Glass):

www.vitroglazings.com/#sle.

2.4.1.13. Outboard Lite: Annealed float glass, 1/4 inch (6.4 mm) thick, minimum.

2.4.1.13.1. Low-E Coating: Vitro Architectural Glass (formerly PPG Glass) Solarban 60 on #2 surface.

2.4.1.13.2. Glass: Clear.

2.4.1.14. Inboard Lite: Annealed float glass, 1/4 inch (6.4 mm) thick.

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2.4.1.14.1. Coating: No coating on inboard lite.

2.4.1.14.2. Glass: Clear.

2.4.1.14.3. Inboard Lite at Gymnasium- Laminated.

2.5. Glazing Units

2.5.1. Monolithic Interior Vision Glazing:

2.5.1.1. Applications: Interior glazing unless otherwise indicated.

2.5.1.2. Glass Type: Annealed float glass.

2.5.1.3. Tint: Clear.

2.5.1.4. Thickness: 1/4 inch (6.4 mm), nominal.

2.5.2. Monolithic Safety Glazing: Non-fire rated.

2.5.3. Direct to Glass Ceramic Printing: Ceramic frit is fused into glass creating permanent designs.

2.5.3.1. Applications: Locations as indicated on drawings.

2.5.3.2. Color: As selected by Architect from manufacturers standard line.

2.5.3.3. Printing Style: As selected by Architect from manufacturers standard line.

2.5.3.4. Glass Type: Fully tempered; monolithic glass system.

2.5.3.5. Thickness: 1/4 inch (6.4 mm), nominal.

2.5.3.6. Size: As indicated on drawings

2.5.3.7. Manufacturers:

2.5.3.7.1. GGI - General Glass International; Alice Direct-to-Glass Printing:

www.generalglass.com/#sle.

2.5.3.7.2. Substitutions: See Section 016000 - Product Requirements.

2.6. Accessories

2.6.1. Setting Blocks: Silicone, with 80 to 90 Shore A durometer hardness; ASTM C864 Option II. Length of 0.1 inch for each square foot (25 mm for each square meter) of glazing or minimum 4 inch (100 mm) by width of glazing rabbet space minus 1/16 inch (1.5 mm) by height to suit glazing method and pane weight and area.

2.6.2. Spacer Shims: Neoprene, 50 to 60 Shore A durometer hardness; ASTM C864 Option II.

Continuous by one half the height of the glazing stop by thickness to suit application, self-adhesive on one face.

2.6.3. Glazing Tape, Back Bedding Mastic Type: Preformed, butyl-based, 100 percent solids compound with integral resilient spacer rod applicable to application indicated; 5 to 30 cured Shore A durometer hardness; coiled on release paper; black color.

2.6.4. Glazing Splines: Resilient silicone extruded shape to suit glazing channel retaining slot;

ASTM C864 Option II; color black.

2.7. Source Quality Control

2.7.1. See Section 014000 - Quality Requirements for additional requirements.

2.7.2. Provide shop inspection and testing for Type IG-3 and G-2 glass.

3. PART 3 – EXECUTION

3.1. Verification of Conditions

3.1.1. Verify that openings for glazing are correctly sized and within tolerances, including those for size, squareness, and offsets at corners.

3.1.2. 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.

3.1.3. Verify that sealing between joints of glass framing members has been completed effectively.

3.1.4. Proceed with glazing system installation only after unsatisfactory conditions have been corrected.

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3.2. Preparation

3.2.1. Clean contact surfaces with appropriate solvent and wipe dry within maximum of 24 hours before glazing. Remove coatings that are not tightly bonded to substrates.

3.2.2. Seal porous glazing channels or recesses with substrate compatible primer or sealer.

3.2.3. Prime surfaces scheduled to receive sealant where required for proper sealant adhesion.

3.3. Installation, General

3.3.1. 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.

3.3.2. Install glazing sealants in accordance with ASTM C1193, GANA (SM), and manufacturer's instructions.

3.3.3. Do not exceed edge pressures around perimeter of glass lites as stipulated by glass manufacturer.

3.3.4. Set glass lites of system with uniform pattern, draw, bow, and similar characteristics.

3.3.5. Set glass lites in proper orientation so that coatings face exterior or interior as indicated.

3.3.6. Prevent glass from contact with any contaminating substances that may be the result of construction operations such as, but not limited to, the following; weld splatter, fire safing, plastering, mortar droppings, etc.

3.4. Installation – Dry Glazing Method (Gasket Glazing)

3.4.1. Application - Exterior and/or Interior Glazed: Set glazing infills from either the exterior or the interior of the building.

3.4.2. Place setting blocks at 1/4 points with edge block no more than 6 inches (152 mm) from corners.

3.4.3. Rest glazing on setting blocks and push against fixed stop with sufficient pressure on gasket to attain full contact.

3.4.4. Install removable stops without displacing glazing gasket; exert pressure for full continuous contact.

3.5. Installation – Dry Glazing Method (Tape and Gasket Spline Glazing)

3.5.1. Application - Exterior Glazed: Set glazing infills from the exterior of the building.

3.5.2. Cut glazing tape to length; install on glazing pane. Seal corners by butting tape and sealing junctions with butyl sealant.

3.5.3. Place setting blocks at 1/4 points with edge block no more than 6 inches (152 mm) from corners.

3.5.4. Rest glazing on setting blocks and push against fixed stop with sufficient pressure to attain full contact.

3.5.5. Install removable stops without displacing glazing spline. Exert pressure for full continuous contact.

3.5.6. Carefully trim protruding tape with knife.

3.6. Installation – Dry Glazing Method (Tape and Tape)

3.6.1. Application - Interior Glazed: Set glazing infills from the interior of the building.

3.6.2. Cut glazing tape to length and set against permanent stops, projecting 1/16 inch (1.6

mm) above sight line.

3.6.3. Place setting blocks at 1/4 points with edge block no more than 6 inches (152 mm) from corners.

3.6.4. Rest glazing on setting blocks and push against tape for full contact at perimeter of pane or unit.

3.6.5. Place glazing tape on free perimeter of glazing in same manner described above.

3.6.6. Install removable stop without displacement of tape. Exert pressure on tape for full continuous contact.

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3.6.7. Carefully trim protruding tape with knife.

3.7. Installation – Wet Glazing Method (Sealant and Sealant)

3.7.1. Application - Exterior Glazed: Set glazing infills from the exterior of the building.

3.7.2. Place setting blocks at 1/4 points and install glazing pane or unit.

3.7.3. Install removable stops with glazing centered in space by inserting spacer shims both sides at 24-inch (610 mm) intervals, 1/4 inch (6.4 mm) below sight line.

3.7.4. Fill gaps between glazing and stops with manufacturer's recommended type of sealant to depth of bite on glazing, but not more than 3/8 inch (9 mm) below sight line to ensure full contact with glazing and continue the air and vapor seal.

3.7.5. Apply sealant to uniform line, flush with sight line. Tool or wipe sealant surface smooth.

3.8. Installation – Plastic Film

3.8.1. Install plastic film with adhesive, applied in accordance with film manufacturer's instructions.

3.8.2. Place without air bubbles, creases or visible distortion.

3.8.3. Install film tight to perimeter of glass and carefully trim film with razor sharp knife.

Provide 1/16-inch (1.6 mm) to 1/8-inch (3.2 mm) gap at perimeter of glazed panel unless otherwise required. Do not score the glass.

3.9. Field Quality Check

3.9.1. See Section 014000 - Quality Requirements for additional requirements.

3.9.2. Glass and Glazing product manufacturers to provide field surveillance of the installation of their products.

3.9.3. Monitor and report installation procedures and unacceptable conditions.

3.10. Cleaning

3.10.1. See Section 017419 - Construction Waste Management and Disposal, for additional requirements.

3.10.2. Remove excess glazing materials from finish surfaces immediately after application using solvents or cleaners recommended by manufacturers.

3.10.3. Remove nonpermanent labels immediately after glazing installation is complete.

3.10.4. Clean glass and adjacent surfaces after sealants are fully cured.

3.10.5. 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.

3.11. Protection

3.11.1. After installation, mark pane with an 'X' by using removable plastic tape or paste; do not mark heat absorbing or reflective glass units.

3.11.2. Remove and replace glass that is damaged during construction period prior to Date of Substantial Completion.

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SECTION 23 33 00 – AIR DUCT ACCESSORIES

4. PART 1 – GENERAL

4.1. Summary

4.1.1. Work included: Provision of materials, installation, and testing of:

4.1.1.1. Sheet Metal Materials

4.1.1.2. Backdraft Dampers

4.1.1.3. Dampers

4.1.1.4. Access Doors

4.1.1.5. Duct Test Holes

4.1.1.6. Dynamic Fire Dampers

4.1.1.7. Control Dampers

4.1.1.8. Turning Vanes

4.1.1.9. Flexible Connectors

4.2. Related requirements

4.2.1. Contents of Division 23 and Division 01, General Requirements apply to this Section.

4.3. References and standards

4.3.1. Reference and Standards as required by Section 23 00 00 and Division 01, General

Requirements.

4.4. Submittals

4.4.1. Submittals as required by Section 23 00 00 and Division 01, General Requirements.

4.4.2. In addition, provide:

4.4.2.1. Manufacturer’s catalog data and fabrication/installation drawings for each factory fabricated duct accessory. Include leakage, pressure drop, and maximum back pressure data.

4.4.2.2. Shop Drawings: Indicate air duct accessories.

4.4.2.3. Manufacturer’s Installation Instructions: Provide instructions for each factory fabricated duct accessory.

4.4.2.4. Maintenance Materials: Furnish the following for KTHFS use in maintenance of project.

4.4.2.4.1. See Section Division 01 Product Requirements, for additional provisions.

4.4.2.4.2. Extra Fusible Links: One for each type and size.

4.5. Quality Assurance

4.5.1. Quality assurance as required by Section 23 00 00 and Division 01, General Requirements.

4.5.2. In addition, meet the following:

4.5.2.1. Manufacturer Qualifications: Company specializing in manufacturing the type of products specified in this section, with minimum five years of documented experience.

4.5.2.2. Products Requiring Electrical Connection: Listed and classified by Underwriters Laboratories Inc. as suitable for the purpose specified and indicated.

4.5.2.3. AMCA 500 - Test Methods for Louvers, Dampers and Shutters.

4.5.2.4. AMCA 511 - Certified Ratings Program for Air Control Devices.

4.5.2.5. NFPA 90A - Installation of Air Conditioning and Ventilating Systems.

4.5.2.6. NFPA 101 - Life Safety Code.

4.5.2.7. UL 555 - Standard for Safety; Fire Dampers.

4.6. Warranty

4.6.1. Warranty of materials and workmanship as required by Section 23 00 00 and Division

01, General Requirements.

5. PART 2 – PRODUCTS

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5.1. Manufacturers

5.1.1. Backdraft Dampers:

5.1.1.1. Ruskin CB D6

5.1.1.2. Greenheck

5.1.1.3. Nailor

5.1.1.4. Or approved equivalent.

5.1.2. Dampers:

5.1.2.1. Ruskin

5.1.2.2. Greenheck

5.1.2.3. Nailor

5.1.2.4. Or approved equivalent.

5.1.3. Access Doors:

5.1.3.1. Ductmate

5.1.3.2. Ruskin

5.1.3.3. Nailor

5.1.3.4. Or approved equivalent.

5.1.4. Dynamic Fire Dampers:

5.1.4.1. Ruskin

5.1.4.2. Greenheck

5.1.4.3. Nailor

5.1.4.4. Or approved equivalent.

5.1.5. Control Dampers:

5.1.5.1. Prolon.

5.1.5.2. Or approved equivalent.

5.1.6. Turning Vanes:

5.1.6.1. Aerodyne

5.1.6.2. Ductmate Industries

5.1.6.3. Duro Dyne Corp

5.1.6.4. Metalaire Inc.

5.1.6.5. Ward Industries

5.1.6.6. Or approved equivalent.

5.1.7. Flexible Connectors:

5.1.7.1. Duro Dyne Corp.

5.1.7.2. Ventfabrics Inc.

5.1.7.3. Ward Industries

5.1.7.4. Or approved equivalent

5.2. Sheet Metal Materials

5.2.1. Comply with SMACNA's "HVAC Duct Construction Standards--Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods, unless otherwise indicated.

5.2.2. Galvanized Sheet Steel: Lock-forming quality; complying with ASTM A 653/A 653M.

Galvanizing: 1-1/4 ounces per square foot total both sides; ducts to have mill-phosphatized finish for surfaces exposed to view.

5.2.3. Reinforcement Shapes and Plates: Galvanized-steel reinforcement where installed on galvanized sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.

5.2.4. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36-inches or less;

3/8-inch minimum diameter for lengths longer than 36-inches.

5.3. Backdraft Dampers

5.3.1. Basis-of-Design: Ruskin CB D6.

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5.3.2. Description: Multiple-blade gravity balanced with center pivoted blades with sealed edges, assembled in rattle free manner with 90-degree stop, adjustment device to permit setting for varying differential static pressure.

5.3.3. Frame: 0.125-inch thick 6063-T5 extruded aluminum channel with galvanized steel braces at mitered corners. Provide mounting flange.

5.3.4. Blades: Single piece, overlap frame, parallel action, horizontal orientation, minimum.070-inch 6063-T5 extruded aluminum material, maximum 6-inch width.

5.3.5. Bearings: Corrosion-resistant synthetic formed as single piece with axles.

5.3.6. Blade Seals: Extruded vinyl, mechanically attached to blade edge.

5.3.7. Blade Axles: Corrosion-resistant, synthetic formed as single piece with bearings, locked to blade.

5.3.8. Tie Bars and Brackets: Galvanized steel.

5.3.9. Return Spring: Adjustable tension.

5.3.10. Damper Capacity:

5.3.10.1. Closed Position: Maximum back pressure of 16-inches water gauge.

5.3.10.2. Open Position: Maximum air velocity of 2,500 feet per minute.

5.3.11. Counterbalances: Adjustable zinc plated steel weights mechanically attached to blade.

Must be capable of operating over wide range of pressures.

5.3.12. Finish: Mill aluminum.

5.3.13. Temperature Rating: -40 degrees F to 200 degrees F.

5.3.14. Operation of Blade:

5.3.14.1. Start to Open: 0.01-inch wg

5.3.14.2. Fully Open: 0.05-inch.

5.3.15. Pressure Drop: Maximum 0.15-inch wg at 1,500-feet per minute through 24-inch by 24-inch damper.

5.3.16. Factory Sleeve: Minimum 20-gauge thickness, 12-inches in length.

5.3.17. Screen: At outdoor intake or discharge. 1/4-inch aluminum.

5.4. Dampers

5.4.1. Basis-of-Design: Ruskin MD35 (rectangular).

5.4.2. General Description: Factory fabricated, with required hardware and accessories. Stiffen damper blades for stability. Include locking device to hold single-blade dampers in a fixed position without vibration. Close duct penetrations for damper components to seal duct consistent with pressure class.

5.4.2.1. Pressure Classes of 3-Inch wg (750 Pa) or Higher: End bearings or other seals for ducts with axles full length of damper blades and bearings at both ends of operating shaft.

5.4.3. Rectangular Volume Dampers: Multiple- or single-blade, parallel- or opposed-blade design with linkage concealed in frame and suitable for horizontal or vertical applications.

5.4.3.1. Steel Frames: Hat-shaped, galvanized sheet steel channels, minimum 16 gauge thick, with mitered and welded corners; frames with flanges where indicated for attaching to walls and flangeless frames where indicated for installing in ducts.

5.4.3.1.1. Roll-Formed Steel Blades: 16-gauge thick, galvanized sheet steel.

5.4.3.1.2. Aluminum Frames: Hat-shaped, 10 gauge thick, aluminum sheet channels;

frames with flanges where indicated for attaching to walls; and flangeless frames where indicated for installing in ducts.

5.4.3.1.3. Roll-Formed Aluminum Blades: 10-gauge thick aluminum sheet.

5.4.3.1.4. Extruded-Aluminum Blades: 16-gauge thick extruded aluminum.

5.4.3.1.5. Blade Axles: Minimum 1/2-inch diameter, plated steel, hex shaped, mechanically attached to blade.

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5.4.3.1.6. Bearings: Molded synthetic sleeve, turning in extruded hole in frame.

5.4.3.1.7. Tie Bars and Brackets: Galvanized steel.

5.4.3.1.8. Mill galvanized.

5.4.3.1.9. Capacity:

5.4.3.1.9.1. Closed Position: Maximum pressure of 3-inches wg

5.4.3.1.9.2. Open Position: Maximum air velocity of 1,500 feet per minute across

24-inch by 24-inch damper.

5.4.4. Round Volume Dampers: Single-blade suitable for horizontal or vertical applications.

5.4.4.1. Steel Frames: Galvanized, roll formed, minimum of 20 gauge thick with beads at each end.

5.4.4.2. Blades: Minimum 20-gauge thick, galvanized sheet steel, round, single-piece.

5.4.4.3. Aluminum Frames: Minimum 10-gauge thick aluminum sheet.

5.4.4.4. Aluminum Blades: Minimum 10-gauge thick aluminum sheet.

5.4.4.5. Extruded-Aluminum Blades: Minimum 16-gauge thick extruded aluminum.

5.4.4.6. Blade Axles: Minimum 3/8-inch square, plated steel, mechanically attached to blade.

5.4.4.7. Bearings: Molded synthetic sleeve, turning in hole in frame.

5.4.4.8. Finish: Mill galvanized.

5.4.4.9. Capacity:

5.4.4.9.1. Closed Position: Maximum pressure of 3-inches wg

5.4.4.9.2. Open Position: Maximum air velocity of 1,500 feet per minute.

5.4.4.10. Leakage: Maximum 40 cfm at 1-inch wg for 20-inches diameter damper.

5.4.4.11. Pressure Drop: Maximum 0.02-inch wg at 1,500-feet per minute through 20-inch diameter dampers.

5.4.5. Jackshaft: 1-inch diameter, galvanized-steel pipe rotating within pipe-bearing assembly mounted on supports at each mullion and at each end of multiple-damper assemblies.

5.4.5.1. Length and Number of Mountings: Appropriate to connect linkage of each damper in multiple-damper assembly.

5.4.5.2. Damper Hardware: Zinc-plated, die-cast core with dial and handle made of

3/32-inch-thick zinc-plated steel, and a 3/4-inch hexagon locking nut. Include center hole to suit damper operating-rod size. Include 2” elevated platform for insulated duct mounting.

5.4.6. Concealed Damper Hardware: For dampers above non-removable ceilings (gyp, plaster, decorative, etc.) where access panels have not been shown on Architectural drawings or in locations where dampers are more than 2-feet above the ceiling, provide:

5.4.6.1. Concealed Damper Regulator: Young Regulator Company Model 315 or approved equivalent.

5.4.6.2. Cable System: Young Regulator Company or approved equivalent.

5.4.6.3. Controller: Young Regulator Company 270-275 or approved equivalent.

5.4.6.4. Control wrenches, wire stops, casing nuts, and stainless-steel wire.

5.4.6.5. Paint cover plate to match ceiling color or as directed by Architect.

5.5. Access Doors

5.5.1. Duct Pressure Class 2-inch WC and Greater: Sandwich-type design with threaded locking bolt assembly. Closed cell neoprene gasket permanently bonded to inside panel. Zinc-coated steel wing nuts or polypropylene molded knobs with threaded metal inserts -zinc coated bolts sealed to inner panel.

5.5.2. Duct Pressure Class 1-½-inch WC and Less: Galvanized steel assembly incorporating frame, door, hinges, and latch(es). Frame tabbed for attachment to duct panel. Double wall door panel with 1-inch insulation. Open cell neoprene gasket attached to frame.

Cam latches for tight closure.

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5.5.3. Plenum Doors: Extruded aluminum frames with extruded santoprene seals. Double-wall 20-gauge galvanized steel door panel with fiberglass insulation.

5.5.4. Size: Maximum size available to fit rectangular duct panel dimension or round duct diameter. Plenum doors minimum 2-feet wide x 4-feet high.

5.6. Duct Test Holes

5.6.1. Temporary Test Holes: Cast iron or cast aluminum to suit duct material, including screw cap and gasket. Size to allow insertion of pitot tube and other testing instruments and of length to suit duct insulation thickness.

5.6.2. Permanent Test Holes: Factory fabricated, airtight flanged fittings with screw cap.

Provide extended neck fittings to clear insulation.

5.7. Dynamic Fire Dampers

5.7.1. Basis-of-Design: Ruskin Model DIBD23 (3-hour rated).

5.7.2. Ratings:

5.7.2.1. Fire Resistance: UL 555 classified and provide fire dampers with UL label for fire rating as appropriate for wall rating and in conformance with NFPA 90A.

5.7.2.2. Dynamic Closure Rating: Dampers classified for dynamic closure to 2000-feet per minute and 4-inches wg (1 kPa) static pressure.

5.7.3. Construction:

5.7.3.1. Frame: Roll formed, galvanized steel channel.

5.7.3.2. Sleeves: Damper to be supplied as a single assembly with an integral factory sleeve.

5.7.3.3. Retaining Angles: Damper to be supplied with factory retaining angles sized to provide installation overlap in accordance with manufacturer's UL listing.

5.7.3.4. Blades: Galvanized curtain type.

5.7.3.5. Closure Springs: Type 301 stainless steel, constant force or spring clip type.

5.7.3.6. Temperature Release Device: 165 degrees F.

5.7.3.7. Mounting: Vertical or Horizontal.

5.7.3.8. Finish: Mill galvanized.

5.7.4. Indicator Switches: Provide remote indication of damper blade position. One per section required.

5.7.5. Factory mounting angles and breakaway connections

5.7.6. Factory Tests: Factory cycle damper to assure proper operation.

5.8. Control Dampers

5.8.1. Basis-of-Design: Prolon PL-AV Series motorized zone/control dampers (ZD-1, ZD-2, ZD-

3).

5.8.2. Fabrication:

5.8.2.1. Frame: 16-gauge roll formed, galvanized steel hat-shaped channel, reinforced at corners. Structurally equivalent to 13-gauge U-channel.

5.8.2.2. Blades:

5.8.2.2.1. Style: Single skin with 3 longitudinal grooves.

5.8.2.2.2. Action: Opposed blade for modulating applications, parallel blade for two position application.

5.8.2.2.3. Orientation: Horizontal or vertical with thrust washers.

5.8.2.2.4. Material: Minimum 16-gauge equivalent thickness, galvanized steel.

5.8.2.2.5. Width: Nominal 6-inches.

5.8.2.3. Bearings: Molded synthetic sleeve, turning in extruded hole in frame.

5.8.2.4. Seals:

5.8.2.4.1. Blade: Inflatable PVC coated fiberglass material and galvanized steel.

Mechanically attached to blade edge.

5.8.2.4.2. Jamb: Flexible metal compression type.

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5.8.2.5. Linkage: Concealed in frame.

5.8.2.6. Axles: Minimum 1/2-inch diameter plated steel, hex-shaped, mechanically attached to blade.

5.8.2.7. Mounting: Vertical or horizontal.

5.8.2.8. Finish: Mill galvanized for installation in galvanized sheetmetal and stainless steel for installation in stainless steel ductwork.

5.8.3. Performance Data (low leakage dampers):

5.8.3.1. Capacity: Demonstrate capacity of damper to withstand HVAC system operating conditions.

5.8.3.1.1. Closed Position: Maximum pressure of 5-inches wg (1.2 kPa) at a 12-inch

(305) blade length.

5.8.3.1.2. Open Position: Maximum air velocity of 2,000 feet per minute (610 m/min).

5.8.3.2. Leakage: Maximum 3.7 cubic-feet per minute per square foot (1.1 m3/min/m2) at 1-inch wg (0.25 kPa) for sizes 36-inches wide and above.

5.8.3.3. Pressure Drop: Maximum 0.07-inch wg (0.02 kPa) at 1,500-feet per minute (457 m/min) across 24-inch x 24-inch damper.

5.8.4. Factory Flange Frame

5.8.5. Factory Sleeve: Minimum 20-gauge thickness.

5.8.6. Duct Transition Connection: Round, Oval, or Rectangular.

5.8.7. Factory Tests: Factory cycle damper assembly to ensure proper operation.

5.9. Turning Vanes

5.9.1. Fabricate to comply with SMACNA's "HVAC Duct Construction Standards--Metal and

Flexible" for vanes and vane runners. Vane runners to automatically align vanes.

5.9.2. Manufactured Turning Vanes: For medium pressure ductwork, ductwork upstream of terminal units, and in ductwork with equal inlet width and height dimensions and outlet width and height dimension, provide double thickness airfoil turning vanes. Low pressure ductwork and ductwork downstream of terminal units use either single thickness or double thickness turning vanes. For mitered rectangular elbows with changes in size from inlet to outlet, only use single thickness turning vanes. Use 4-inch radius vanes spaced on centers of 3.25-inches for single thickness. Use 4-inch radius vanes spaced on centers of 3.5-inches for double thickness.

5.10. Flexible Connections

5.10.1. General Description: Flame-retardant or noncombustible fabrics, coatings, and adhesives complying with UP 181, Class 1.

5.10.2. Metal-Edged Connections: Factory fabricated with fabric strip 3-1/2 inches wide attached to two strips of 2-3/4 inch wide 0.028-inch-thick galvanized sheet steel or 0.032-inch-thick aluminum sheets. Select metal compatible with ducts.

5.10.3. Indoor System, Flexible Connector Fabric: Glass fabric double coated with neoprene.

5.10.3.1. Minimum Weight: 26 oz./sq. yd. (880 g/sq. m).

5.10.3.2. Tensile Strength: 480 lbf/inch (84 N/mm) in the warp and 360 lbf/inch (63

N/mm) in the filling.

5.10.3.3. Service Temperature: Minus 40 to plus 200 degrees F (Minus 40 to plus 93 degrees C).

6. PART 3 – EXECUTION

6.1. Preparation

6.1.1. Verify that electric power is available and of correct characteristics.

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6.1.2. Inspect areas to receive air duct accessories. Notify Engineer of conditions that would adversely affect the installation of the dampers. Do not proceed until conditions are corrected.

6.1.3. Coordinate location in RCP and color of concealed damper hardware with Architects prior to installation.

6.2. Installation

6.2.1. Install duct accessories according to applicable details in SMACNA's "HVAC Duct

Construction Standards--Metal and Flexible" for metal ducts.

6.2.2. Provide duct accessories of materials suited to duct materials; use galvanized-steel accessories in galvanized-steel, stainless-steel accessories in stainless-steel ducts, and aluminum accessories in aluminum ducts.

6.2.3. Install backdraft dampers on exhaust fans or exhaust ducts nearest to outside and where indicated.

6.2.4. Where installing volume dampers in ducts with liner; avoid damage to and erosion of duct liner.

6.2.5. Provide balancing dampers at points on supply, return, and exhaust systems where branches lead from larger ducts for air balancing. Install at a minimum of two duct widths from each branch takeoff. Provide balancing dampers for all air inlets and outlets.

6.2.6. Provide test holes at fan inlets and outlets and where required for air testing and balancing.

6.2.7. Install fire dampers, with fusible links, and in accordance with manufacturer's UL-approved written instructions.

6.2.8. Install all dampers square and free from racking with blade running horizontally.

6.2.9. Do not compress or stretch damper frames into duct or opening.

6.2.10. Handle dampers using sleeve or frame. Do not lift dampers using blades, actuators, or jack shafts.

6.2.11. Install bracing for multiple sections to support assembly weights and hold against system pressure. Install bracing as needed.

6.2.12. Turning Vanes:

6.2.12.1. Vanes must be installed in all square elbows, eliminating every other vane is not allowed.

6.2.12.2. Single thickness vanes cannot be over 36-inches long without intermediate vane runner.

6.2.12.3. Install per SMACNA and fasten/support to prevent vibration, noise, and to maintain proper alignment at design velocity.

6.2.13. Install duct access doors to allow for inspecting, adjusting, and maintaining accessories and terminal units as follows:

6.2.13.1. On both sides of duct coils.

6.2.13.2. Downstream from volume dampers and equipment.

6.2.13.3. Adjacent to fire dampers, providing access to reset or reinstall fusible links.

6.2.13.4. To interior of ducts for cleaning; before and after each change in direction, at maximum 50-foot (15-m) spacing.

6.2.13.5. Install the following sizes for duct-mounting, rectangular access doors:

6.2.13.5.1. One-Hand or Inspection Access: 8-inches by 5-inches.

6.2.13.5.2. Two-Hand Access: 12-inches by 6-inches.

6.2.13.5.3. Head and Hand Access: 18-inches by 10-inches.

6.2.13.5.4. Head and Shoulders Access: 21-inches by 14-inches.

6.2.13.5.5. Body Access: 25-inches by 14-inches.

6.2.13.5.6. Body Plus Ladder Access: 25-inches by 17-inches.

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6.2.13.6. Install the following sizes for duct-mounting, round access doors:

6.2.13.6.1. One-Hand or Inspection Access: 8-inches in diameter.

6.2.13.6.2. Two-Hand Access: 10-inches in diameter.

6.2.13.6.3. Head and Hand Access: 12-inches in diameter.

6.2.13.6.4. Head and Shoulders Access: 18-inches in diameter.

6.2.13.6.5. Body Access: 24-inches in diameter.

6.2.13.7. Label access doors.

6.2.14. Install flexible connectors immediately adjacent to equipment in ducts associated with fans and rooftop units (RTU-1 through RTU-5, EF-1, EF-2) supported by vibration isolators. Provide sheet metal weather cover over flexible connections located outdoors.

Attach sheet metal to either equipment side or ductwork side, but not both.

6.2.15. For fans developing static pressures of 5-inch wg (1250 Pa) and higher, cover flexible connectors with loaded vinyl sheet held in place with metal straps.

6.2.16. Install duct test holes where indicated and required for testing and balancing purposes.

6.3. Adjusting

6.3.1. Adjust duct accessories for proper settings.

6.3.2. Adjust fire dampers for proper action.