Addendum_#1_-_Updated_08_4100-Aluminum_Storefronts.pdf

CLAY COUNTY COURTHOUSE RENOVATION 08 4100-1 DEMONSTRATION

DHA COMM. NO. 23015

SECTION 08 4100 (ADDENDUM #1)

ALUMINUM-FRAMED ENTRANCES AND STOREFRONT

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Exterior Aluminum framed glazed storefront (referenced as “SF” on drawings)

2. Aluminum entrance doors and frames.

B. Related Sections:

1. Division 1: Administrative, procedural, and temporary work requirements.

2. Section 07 9200 - Joint Sealants.

3. Section 08 7111 - Door Hardware.

4. Section 08 4210 – All Glass Storefronts & Doors

5. Section 08 4413 – Aluminum Curtainwall

6. Section 08 8000 - Glazing.

1.2 REFERENCES

A. Aluminum Association (AA) DAF-45 - Designation System for Aluminum Finishes.

B. American Architectural Manufacturers Association (AAMA):

1. 1503.1 - Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors and Glazed Wall Sections.

2. 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Architectural Extrusions and Panels.

C. American Society for Testing and Materials (ASTM):

1. B 209 - Aluminum-Alloy Sheet and Plate.

2. B 221 - Aluminum-Alloy Extruded Bars, Rods, Wires, Shapes and Tubes.

3. C 920 - Elastomeric Joint Sealants.

4. E 283 - Rate of Air Leakage through Exterior Windows, Curtain Walls and Doors.

5. E 330 - Structural Performance of Exterior Windows, Curtain Walls, and Doors under the Influence of Wind Loads.

6. E 331 - Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Differential.

CLAY COUNTY COURTHOUSE RENOVATION 08 4100-2 DEMONSTRATION

1.3 SYSTEM DESCRIPTION

A. Design Requirements: Design systems to withstand:

1. Positive and negative design wind loads acting normal to wall plane in accordance with Building Code with deflection of any member not to exceed L/175, tested to

ASTM E 330.

2. Movement caused by an ambient temperature range of 120 degrees F and a surface temperature range of 160 degrees F.

B. Performance Requirements:

1. Air infiltration: Maximum air infiltration as follows, tested to ASTM E 283 at pressure differential of 6.24 PSF.

a. Entrances: Per linear foot of perimeter crack.

1) 3 x 7 foot single entrance door and frame: 0.5 CFM.

2) Pair of 3 x 7 foot entrance doors and frame: 1.0 CFM.

b. Storefront: 0.06 CFM per square foot of fixed area.

2. Water infiltration; Storefront: No water leakage, tested to ASTM E 331 at test pressure of 6.24 PSF.

3. Uniform structural loading: No glass breakage or permanent damage to fasteners or system components, tested to ASTM E 330 at 1.5 times the design pressure.

4. Thermal transmittance due to conduction (Uc): Maximum 0.60, tested to AAMA

1503.1 on two 6'-0" x 6'-8" units with 1 inch clear insulating glass.

5. Condensation resistance factor (CRF): Minimum 50, tested to AAMA 1503.1 on two 6'-0" x 6'-8" units with 1 inch clear insulating glass.

1.4 QUALITY ASSURANCE

A. Installer Qualifications: Minimum 2 years documented experience in work of this Section.

B. Conform to applicable accessibility code for locating hardware and for door opening force requirements.

1.5 SUBMITTALS

A. Shop Drawings: Indicate system dimensions, framed opening requirements and tolerances, trim, sealers, hardware, and accessories.

B. Samples:

1. 12 inch long aluminum framing system samples showing profile and finish.

2. 12 x 12 inch door corner showing corner construction, reinforcement, and glazing.

3. Each hardware item, if requested.

C. Test Reports: Submit certified results of previous tests by a recognized independent laboratory substantiating compliance with specified design and performance criteria, current within past 5 years.

CLAY COUNTY COURTHOUSE RENOVATION 08 4100-3 DEMONSTRATION

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Contract Documents are based on products by Kawneer Corporation.

B. Exterior: 451 Tri-Fab (2” x 4.5” profile)

C. Subject to compliance with the specifications, equivalent products by the following manufacturers are acceptable:

1. EFCO

2. YYK

3. Vistawall

4. Tubelite

D. Substitutions: Under provisions of Division 1.

2.2 MATERIALS

A. Aluminum:

1. Extrusions: ASTM B 221, 6063-T5 alloy and temper.

2. Sheet: ASTM B 209, alloy and temper best suited to application.

2.3 MANUFACTURED UNITS

A. Entrance Doors: Medium Stile configuration with nominal 3-1/2” vertical stiles and top rail and 6-1/2” bottom rail.

B. Storefront: Glazing system designed to receive 1/4 inch or 1 inch glass by means of elastomeric gaskets. 2 inch nominal face width by 4-1/2” depth.

C. Hardware: See 08 7100

2.4 ACCESSORIES

A. Fasteners:

1. Series 300 stainless steel for wet locations and exposed fasteners.

2. Stainless or corrosion resistant coated steel for other locations.

B. Sealants:

1. Perimeter: Specified in Section 079200.

2. Internal: ASTM C 920, Type S, Grade NS, Class 25, Uses NT, M, A, and O; single component silicone, non sag, plus or minus 25 percent movement capability.

C. Glazing Gaskets, and Accessories: Specified in Section 088000.

D. Weatherstripping: Replaceable, nonporous, polymeric material.

CLAY COUNTY COURTHOUSE RENOVATION 08 4100-4 DEMONSTRATION

2.5 FABRICATION

A. Fabricate with minimum clearances and shim spaces around perimeter, yet enabling installation and dynamic movement.

B. Accurately fit and secure joints and intersections. Make joints flush, hairline, and weathertight.

C. Fabricate in largest practical units.

D. Conceal fasteners and attachments from view.

E. Reinforce framing members with internal steel when required to support imposed loads.

F. Doors:

1. Mechanically fastened and welded corner construction

2. Fabricate stiles and rails of minimum 0.125 inch thick extrusions and glass stops from minimum 0.050 inch thick extrusions.

3. Fabricate stiles and rails of minimum 0.125 inch thick extrusions and glass stops from minimum 0.050 inch thick extrusions.

4. Prepare with internal reinforcements for door hardware.

G. Finishes:

1. Kawneer Permacoat™ AAMA 2604, Powder Coating (Color White)

a. Color to match existing storefront

2. Apply one coat bituminous paint to concealed aluminum surfaces in contact with cementitious materials or dissimilar metals.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install in accordance with manufacturer's instructions and approved Shop Drawings.

B. Install components plumb and level, in proper plane, free from warp and twist.

C. Provide alignment attachments and anchors to permanently attach components to building structure.

D. Set thresholds and sill members in mastic and secure.

E. Install hardware using templates provided.

F. Install glass and accessories in accordance with Section 08800.

G. Installation Tolerances:

CLAY COUNTY COURTHOUSE RENOVATION 08 4100-5 DEMONSTRATION

1. Maximum variation from plumb or level: 1/8 inch in 3 feet or 1/4 inch in any 10 feet, whichever is less.

2. Maximum misalignment of members abutting end to end: 1/32 inch.

3. Sealant space between framing members and adjacent construction: Minimum 1/2 inch.

3.2 ADJUSTING

A. Adjust hardware for smooth operation.

B. Adjust door closers to operate doors with following maximum opening forces:

1. Interior doors: 5.0 pounds.

2. Exterior doors: 8.5 pounds.

C. Touch up minor scratches and abrasions to match specified finish.

END OF SECTION 08 4100