•• Architectural DATE:August 15,2005PROJECTNO.57403.01-122-34 SHEET_1_0F_12_

~ Testing BY:

JARlMDS PROJECTNAME: International Aluminum - BR 7500

Blast Window Analyses

Subject: BR 7500 Series Blast Resistant Awning Window

AT! Report 57403.01-122-34

Rendered to:

International Aluminum Corporation767 Monterey Pass Road

Monterey Park, California 91754

Prepared by:

Joseph A. Reed, P.E.Michael D. Strernrnel

Architectural Testing, Inc.130 Derry Court

York, Pennsylvania 17402

August 15,2005

~ d· ~r:ILDigi1ally Sigoed by: Joseph A. Rood

Joseph A. Reed, P.E.Director - Engineering and Product Testing

c;g;1a11y Signed by: Michael D. Stromme!

Michael D. Strernrnel

~ Architectural DATE:August 15, 2005PROJECTNO.57403.01-122-34 SHEET_2_0F_12_

~ TestingBY:

JAR/MPS PROJECTNAME: International Aluminum - BR 7500

Architectural Testing, Inc. was contracted by International Aluminum Corporation to performengineering analyses of their BR 7500 Series blast resistant window. The analysis includes genericinstallation details. The analysis was conducted to show compliance to the requirements ofMinimum Antiterrorism Standards for Buildings - UFC 4-010-01.

Based on the installed window sizes and the procedures of UFC 4-010-01, linear-elastic staticstructural analyses assuming static pressure loads of 4.4 psi and 10.8 psi were performed for thewindow glazing parts and window anchorage. And, linear-elastic static structural analyses assuminga static pressure load of 1.0 psi were performed for the window frame parts.

Standards and references utilized in this project include:

Minimum Antiterrorism Standards for Buildings - UFC 4-010-01 United States Department ofDefense, 8 October 2003.

Aluminum Design Manual 2000. The Aluminum Association, Inc., 2000.

Metal Curtain Wall Fasteners -AAMA TIR-A9-1991. American Architectural ManufacturersAssociation.

Analvses

Glazing SystemThe window system provides clearance for 1" thick insulated glass. (Drawing USA-2872 Sheet 3).The minimum requirement for insulated glass is a 5/16" thick laminated inner lite constructed fromtwo 1/8" thick pieces of annealed glass with a 0.030" thick PVB interlayer. The glass specified forthe window system (Drawing USA-2872 Sheet 1, Item 6) is in compliance with UFC 4-010-01Section B-3 .1.1.

The vent is exterior glazed against an integral leg of the vent frame. The glass bite is approximately7/8" and structural silicone sealant is used (Drawing USA-2872 Sheet 1, Item 8). The glazingsystem is in compliance with UFC 4-010-01 Section B-3.1.2.2.

Depending on the sizes of the installed windows, the glazing stop must be capable of resisting a 4.4psi or 10.8 psi static pressure load applied to the surface of the glazing in accordance with UFC 4­010-01 Section B-3.1.2.3. Windows are to be exterior glazed and, there for, rely on the sash frameleg to restrain the glazing. Analysis considering the shear and bending stresses developed on thesash frame leg is presented on Page 5 and Page 6. The calculated stresses are above the allowablevalues established by UFC 4-010-01 for windows less than 10.8 ft2. The sash frame can be madecompliant with the requirements if the sash and window frame is thickened to 5/32", the sash andwindow alloy is changed to 6061-T6 or 6063- T6 or the maximum window height is limited to 25".

•. Architectural DATE: August 15,2005PROJECTNO.57403.01-122-34 SHEET_3_0F_12_

~ Testing BY:

JAR/MDL- PROJECTNAME: Intem~tionalAluminum- BR 7500

Frame Member DesignA stress and deflection analysis was conducted for the structural members of the windows. Thewindow jamb, sill and head sections anchored to the building substrate are analyzed as simplesupported beams over multiple supports.

The stress and deflection analysis is presented on Page 7 and Page 8. The results of thecalculations reveal that the window frame stresses are below the allowed value (0.2% Offset YieldStress per UFC 4-010-01 Section B-3.1.2.1) for the installed window sizes. Also, calculated

deflections were within the fl60 inches requirement for the spans analyzed.

Installation

Based on the sizes of the installed windows, anchorages must be capable of resisting a 4.4 psi or a10.8 psi static pressure load applied over the surface of the window in accordance with UFC 4-010­01 Section B-3.1.2.3. First, individual anchor load capacities are established based on bearingstresses at the window frame, connection shear between the window frame and the substrate orshear stress of the anchor. Then, the individual anchor load capacities and application of the UFCprincipals are used to determine a general anchor spacing for the windows. Calculations arepresented on Page 9 through Page 11.

Calculations are performed for two typical anchors (# 12-14 and # 10-16 screws) and four commonsubstrates (0.063" thick, 0.080" thick, 0.093" thick and 0.125" thick aluminum curtain wallmembers). Results are summarized in the following tables.

#10-16 Screw SAE Grade 5Substrate

Anchor Required SpacingThickness

Capacity Comment4.4 psi

10.8 psi(inch) (lb)0.062

621Limited by connection shear1250.080

910Limited by connection shear1680.093

1,065Limited by bearing stress16100.125

1,065Limited by bearing stress1610

#12-14 Screw SAE Grade 5Substrate

Anchor Required SpacingThickness

Capacity Comment4.4 psi

10.8 psi(inch) (lb)0.062

662Limited by connection shear1460.080

971Limited by connection shear1690.093

1,211Limited by bearing stress16120.125

1,211Limited by bearing stress1612

Spacing maximum of 16" is required by structural analysis of the frame parts.

•• Architectural DATE: August 15,2005PROJECT NO. 57403.01-122-34 SHEET4OF

12

~ Testing

----BY:

JAR/MDS PROJECT NAME: International Aluminum - BR 7500

Reference Drawin~s (attached)

Dimensional Layoutfor DoD BR7500 Window. Sheets 1 - 3, International AluminumCorporation.

7500 VENT, Die No. H-60982 Ai, International Aluminum Corporation.

7500 SILL/HEAD, Die No. H-60980 Ai, International Aluminum Corporation.

7500 JAMB, Die No. H-6098i Ai, International Aluminum Corporation.

CORNER ANGLE, Die No. H-30958 C4, International Aluminum Corporation.

•• Architectural DATE:August 15,2005PROJECT NO.57403.01-122-34 SHEET_5_0F_12_

~ Testing BY:

JAR/MPL- PROJECT NAME: International Aluminum - BR 7500

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• Architectural DATE: August 15,2005PROJECT NO. 57403.01-122-34 SHEET_l_l_0F_l_2_

~ Testing BY:

JAR/MPS PROJECT NAME: International Aluminum - BR 7500

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•/""'1 .••. Architectural" ••... Testing

DATE:August 15,2005

BY: JAR/MDS

PROJECTNO.57403.01-122-34 SHEET_12_0F_1_2_

PROJECTNAME: International Aluminum - BR 7500

Revision Log

Rev. # Date Pa2;e(s) Revision( s)0

08/15/05 All Original report issue