08520_en.doc

SECTION 08520

ALUMINUM WINDOWS

PART 1 -

GENERAL

1.1

REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN)

PREN 12365-1

(1996) Building Hardware – Gaskets and Weather-stripping for Doors, Windows, Shutters, and Curtain Walls. Part 1: Performance Requirements and Classification.

ITALIAN/EUROPEAN HARMONIZATION STANDARDS (UNI EN)(UNI ENV)(UNI EN ISO)

UNI EN 1026

(2001)Windows and Doors. Air Permeability. Test Method.

UNI EN 12211

(2001) Windows and Doors - Resistance to Wind Load - Test Method.

UNI EN 1027

(2001)Windows and Doors. Water Tightness. Test Method.

UNI EN 288-4

(1993) Specification and Qualification of Welding Procedures for Metallic Materials - Part 4: Welding Procedure Tests for the Arc Welding of Aluminum and its Alloys.

UNI EN 573-1

(1996) Aluminum and Aluminum Alloys - Chemical Composition and Form of Wrought Products - Part 1: Numerical Designation System.

UNI EN 107

(1983) Methods of Testing Windows. Mechanical Tests.

UNI EN 13115

(2002) Windows – Classification of Mechanical Properties – Racking, Torsion, and Operating Forces.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 6613

(1980) Windows and Door Height Windows - Air Permeability Test.

1.2 SUBMITTALS

Submit the following:

1.2.1 Shop Drawings

Windows

Windows Schedule

Drawings shall indicate elevations of windows, full-size sections, thicknesses and gages of metal, fastenings, proposed method of anchoring, size and spacing of anchors, details of construction, method of glazing, details of operating hardware, method and materials for weather stripping, method of attaching screens, material and method of attaching subframes, stools, installation details, and other related items.

Submit schedule with drawings indicating location of each window unit.

1.2.2 Product Data

Hardware

Fasteners

Screens

Weather stripping

Accessories

1.2.3 Samples

Finishes

Submit color chart of standard factory color coatings when factory-finished color coating is to be provided.

Submit one full-size window of each type proposed for use, glazing, hardware, anchors, and other accessories.

Where screens or weather stripping is required, fit sample windows with such items that are to be used. After approval, install each sample in the work, clearly identified, and record its location.

1.2.4 Design Data

Structural Calculations for Blast Load

1.2.5 Test Reports

Minimum condensation resistance factor

Resistance to blast Load

1.2.6 Certificates

Submit certificates from independent testing agencies indicating compliance with requirements.

1.2.7 Report Requirements

Submit test reports for each type of window attesting that identical windows have been tested and meet the requirements specified herein for conformance to requirements including test size, minimum condensation resistance factor (CRF), and blast pressure.

1.3 DELIVERY, STORAGE AND HANDLING

Deliver windows to project site in an undamaged condition. Use care in handling and hoisting windows during transportation and at the jobsite. Store windows and components out of contact with the ground, under a Weather-tight covering, so as to prevent bending, warping, or otherwise damaging the windows. Damaged windows shall be repaired to an "as new" condition as approved. If windows can not be repaired, provide a new unit.

1.4 PROTECTION

Protect finished surfaces during shipping and handling using the manufacturer's standard method, except that no coatings or lacquers shall be applied to surfaces to which calking and glazing compounds must adhere.

PART 2 - PRODUCTS

2.1 WINDOWS

Windows shall conform to the requirements specified herein. Provide windows of types, grades, performance classes, combinations and sizes indicated or specified. Design windows to accommodate hardware, glass, weather stripping, screens, and accessories to be furnished. Each window shall be a complete factory assembled unit with glass installed. Dimensions shown are minimum. Provide windows with insulating glass and a thermal break.

a.

Windows shall have no water penetration at a pressure of 0.38 kPa of fixed area when tested in accordance with UNI EN 1027.

b.

Air infiltration shall not to exceed 2.63 by 10-5 cm/m2 of fixed area at a test pressure of 0.30 kPa (80 km/hr) wind load in accordance with ISO 6613 or UNI EN 1026.

c.

Fabricate windows of Type 6063 T5 aluminum as described in UNI EN 573-1 with welding in accordance with UNI EN 288-4. In alternative the aluminum type can be as recommended by the blast window manufacturer.

d.

Fabricate windows with materials, procedures, and methods which comply with testing requirements of UNI EN 13115 and UNI EN 107.

e.

Fabricate windows to resist exterior wind loads in accordance with UNI EN 12211. In addition to compliance with UNI EN 12211, window framing members for each individual lite or glass shall not deflect to the extent that deflection perpendicular to the glass lite exceeds L/175 of the glass edge when subjected to uniform loads at indicated design wind speed or pressure.

f.

Exterior frames and window mullions shall be designed to resist the dynamic blast load indicated. Where dynamic blast loads are not indicated, exterior frames, and window mullions shall be designed to resist an equivalent static load of 7.0 kPa applied to the surface of the glazing. Frames may be designed using ultimate yield stress in correspondence of a permanent deformation of the aluminum equal to 0.2%. Frame and mullion deformations shall not exceed 1/60 of the unsupported member lengths. Connections to surrounding walls shall be designed to resist to an equivalent static load of 75 kilopascal for glazing panels with a vision area less than or equal to 1 square meters, and equal to 30 kilopascal for glazing panels with a vision area from 1 square meter to 3 square meters. Loads shall be considered applied to the surface of the glazing and frame. Connections and hardware may be designed based on ultimate yield stress in correspondence of the aluminum permanent deformation equal to 0.2%, or equal to yield stress if constructed with steel.

g. Some exterior frames and window mullions, shown on drawings, shall be designed to resist to a dynamic load with the following pressure and impulse: 843.7 kPa and 1539.5 kPa-ms. The same type of load shall be considered for the connections to the surrounding walls.

The following manufacturers offer products meeting the requirements of this specification:

ARPAL DEFENDER INC.

6701 Democracy Blvd.

Suite 300

Bethesda, MD 20817, USA

ATTN: Marty Emek

Tel: (301) 571-9333

Fax: (301) 349-5479

Email: moty@arpal.com

SALZER BUILDING SECURITY

Dietrich-Bonhoeffer-Str.1-3

D-35037 Marburg

ATTN: Frank Rummler

Tel: 49 (0) 6421/938-100

Fax: 49 (0) 6421/938-190

Email: rummler@saelzer.de or suelzer@saelzer.de

PENSHER SKYTECH LTD

Felling Works, William Street, Felling, Gateshead

Tyne & Wear NE 100JP – U.K.

Tel: 0044(0)1914380455

Fax: 0044(0)1914302328

2.1.1 Hopper Frame Window

Provide Hopper Frame Type as shown on drawings. Operation shall be by lever handle with rod operating two point locking device minimum.

2.1.2 Glass and Glazing

Materials are specified in Section 08800, "Glazing".

2.1.3 Calking and Sealing

Are specified in Section 07920, "Joint Sealants".

2.2 FABRICATION OF ALUMINUM FRAMES

Provide aluminum frames to receive windows fabricated of extruded aluminum shapes to contours approximately as shown on drawings, and not less than 75 millimeters in thickness, unless otherwise noted and in any case they shall resist to the blast. Frames that are to receive fixed glass shall have removable glass stops and glazing beads. Use countersunk stainless steel Phillips head screws for exposed fastenings spaced not more than 30 centimeters on centers. Mill joints in frame members to a hairline watertight fit, reinforce, and either weld along concealed lines of contact or secure mechanically. Shapes shown are representations of design, function, and required profile. Dimensions shown are minimum. Shapes of equivalent design, dimensions, profile, and function may be submitted. Such shapes are subject to approval of samples and shop drawings by the Contracting Officer’s Technical Representative.

2.2.1 Provisions for Glazing

Design windows and frame bites adequate to the thickness and type of the glasses indicated. Frame bites shall be 9.5 mm, as minimum, for structurally glazed systems, 25 mm, as minimum, for non structurally glazed systems. Glazing shall resist to the static loads indicated in Section 08800 “Glazing”.

2.2.2 Weather stripping

Provide for ventilating sections of all windows to ensure a weather-tight seal meeting the infiltration requirements specified. Provide easily replaceable factory-applied weather stripping. Use molded vinyl, molded or molded-expanded neoprene or molded or expanded Ethylene Propylene Diene Terpolymer (EPDM) weather stripping for compression contact surfaces. Use treated woven pile or wool, or polypropylene or nylon pile bonded to nylon fabric and metal or plastic backing strip weather stripping for sliding surfaces. Do no use neoprene or polyvinylchloride weather stripping where they will be exposed to direct sunlight. Weather stripping shall have the following physical characteristics when tested in accordance with PREN 12365-1.

Close Force: Maximum 30 N b.

Deflection Recovery: Minimum 70% c.

Long Term Recovery: Minimum 60%, long term working range 5 mm x 7 mm greater than or equal to 3.5 mm.

2.2.3 Fasteners

Use fasteners as standard with the window manufacturer for windows, trim, and accessories. Self-tapping sheet-metal screws are not acceptable for material more than 2 mm thick. Provide exposed fasteners of non-magnetic stainless steel or aluminum, treated to match window finish. Provide concealed fasteners (after installation) of stainless steel (minimum of 16% chrome), steel cadmium plated, steel-zinc plated, or steel-nickel/chrome plated steel. Provide concealed anchors of the type recommended by the window manufacturer for the specific type of construction. Anchors and fasteners shall be compatible with the window and the adjoining construction. Provide a minimum of three anchors for each jamb located approximately 150 mm from each end and at midpoint, and in compliance with the blast window manufacturer’s recommendations.

Fasteners shall withstand the static loads indicated in paragraph 2.1.f, and 2.1.g.

2.2.4 Drips and Weep Holes

Provide continuous drips over heads of top ventilators. Where fixed windows adjoin ventilators, drips shall be continuous across tops of fixed windows. Provide drips and weep holes as required to return water to the outside.

2.2.5 Combination Windows

Windows used in combination shall be the same grade and performance class and shall be factory assembled. Where factory assembly of individual windows into larger units is limited by transportation considerations, prefabricate, match mark, transport, and field assemble.

2.2.6 Accessories

Provide windows complete with necessary hardware, fastenings, clips, fins, anchors, glazing beads, and other appurtenances necessary for complete installation and proper operation. Furnish extruded aluminum sub-frame receptors and sub-sill with each window unit.

2.2.6.1 Hardware

The item, type, and functional characteristics shall be the manufacturer's standard for the particular window type. Provide hardware of suitable design and of sufficient strength to perform the function for which it is used. Equip all operating ventilators with a lock or latching device which can be secured from the inside. Provide hardware of aluminum, stainless steel, or other corrosion-resistant base material compatible with aluminum.

Steels other than stainless steel shall be cadmium, zinc, or nickel/chrome plated.

2.2.7 Finishes

Exposed aluminum surfaces shall be factory finished with an organic coating or with polyester powder coating. Color shall be as indicated by the Contracting Officer’s Technical Representative.

PART 3 - EXECUTION

3.1 INSTALLATION

3.1.1 Method of Installation

Install in accordance with the window manufacturer's printed instructions and details. Build in windows as the work progresses or install without forcing into prepared window openings. Set windows at proper elevation, location, and reveal; plumb, square, level, and in alignment; and brace, strut, and stay properly to prevent distortion and misalignment. Protect ventilators and operating parts against accumulation of dirt and building materials by keeping ventilators tightly closed and locked to frame. Bed screws or bolts in sill members, joints at mullions, contacts of windows with sills, built-in fins, and subframes in mastic sealant of a type recommended by the window manufacturer. Install windows in a manner that will prevent entrance of water and wind. Fasten insect screens securely in place.

3.1.2 Dissimilar Materials

Where aluminum surfaces are in contact with, or fastened to masonry, concrete, wood, or dissimilar metals, except stainless steel or zinc, the aluminum surface shall be protected from dissimilar materials with one or more of the following methods. Surfaces in contact with sealants after installation shall not be coated with any type of protective material.

Apply caulking material between the aluminum and the dissimilar metal.

b.

Painting the dissimilar metal with a prime coat of zinc-chromate primer, or other suitable primer, followed by one coat of aluminum paint or other suitable protective coating, excluding those containing lead pigmentation.

c.

Paint the dissimilar metal with one coat of heavy-bodied bituminous paint.

d.

Use of a gasket in permanently dry locations.

3.1.3 Anchors and Fastenings

Make provision for securing units to each other, to masonry, and to other adjoining construction. Windows installed in masonry walls shall have head and jamb members designed to recess into masonry wall not less than 11 mm.

3.1.4 Adjustments After Installation

After installation of windows and completion of glazing and field painting, adjust all ventilators and hardware to operate smoothly and to provide weathertight sealing when ventilators are closed and locked. Lubricate hardware and operating parts as necessary. Adjust double hung windows to operate with maximum applied force of 25 pounds in either direction, not including breakaway friction force.

3.2 CLEANING

Clean interior and exterior surfaces of window units of mortar, plaster, paint spattering spots, and other foreign matter to present a neat appearance, to prevent fouling of weathering surfaces and weather-stripping, and to prevent interference with the operation of hardware. Replace all stained, discolored, or abraded windows that cannot be restored to their original condition with new windows.

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Section 08520

Section 08520