Wind-Borne Debris with Mahogany Windows & Doors
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Transcript of Wind-Borne Debris with Mahogany Windows & Doors
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WELCOME
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Peetz Windows and Doors, continuing education program for architects.
AIA Course Reference: PTZ101
This course qualifies for 1.0 LU AIA/CES credits
“Designing for Wind-Borne Debris with Mahogany Windows & Doors”
4 Oct09 v1
Peetz Windows and Doors is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credits earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members available on request.
This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
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“Mahogany Windows & Doors for Wind-Borne Debris”
Learning Objectives
1. How a hurricane effects a building structure
2. A basic understanding of wind-borne debris codes and standards
3. Product approvals and design options for mahogany windows
4. Design criteria and specifying mahogany windows and doors
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Top Ten Most Destructive Hurricanes (Atlantic)
Note: damages are listed in US Dollars and are not adjusted for inflation
Source: www.mthhurricane.com
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United States - Areas of Risk
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Saffir-Simpson Hurricane Scale
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The Dynamics of a Hurricane
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Hurricane Market Drivers
Government Regulation (Building Codes)
Industry Initiatives (codes and standards)
Insurance Industry Government Mitigation
Programs Hurricane season publicity Increased Consumer Demand
for Impact Windows over Shutters
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Wind-Borne Debris Regions
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Defined by American Society of Civil Engineers (ASCE) wind speed map - determines the highest risk areas based on historical data
States, counties, or municipalities can require specific codes and standards
Insurance entities can require specific requirement to obtain insurance
Codes & Standards for Wind-Borne Debris
TDI
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U.S Wind Speed Map
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State (regional) Wind Speed Maps
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Florida Wind Speed Map
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General Testing Requirements
1. Approved test lab 2. Engineering witness and review 3. Three identical units must pass 4. Test results, applications, and check submit to
Dade County Product Control Division for Notice of Acceptance (NOA)
4.1
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Product Testing
Vinu Abraham
Cyclic Pressure Test (9000 cycles) Missile Impact Test (large or small) Three identical units All glass types must be tested All installation methods must be
tested All hardware types must be tested
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Note: non-glazed products (storm panels & shutters) only have to go through 1342 cycles, 5/8" plywood is accepted and does not have to go through missile or cyclical testing
Product Requirements
Test specimens must be the same as installed products
System components must be identified
Installation methods must be completely described, provided and executed
4.1
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Product Characteristics
High design loads Impact resistant glass Missile impact approval Cyclical pressure test Specific design pressures
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Windows and doors designed for Wind-borne debris regions will have the following characteristics:
1. Large missile or Small missile 2. Cyclical Loading 3. Air, Water & Structural
Glazing Design Requirements
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Impact Missile Requirements
Wind Zone 1 – 110mph Wind Zone 2 – 120mph Wind Zone 3 – 130mph Wind Zone 4 – 140mph
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Category Wind Speed 1 74 mph to 95 mph
2 98 mph to 110 mph
3 111 mph to 130 mph
4 131 mph to 155 mph
5 >156 mph
Large Missile Simulation
Vinu Abraham
110 to 120 mph
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Large Missile Test 4.2
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Cyclic Pressure Testing
Simulate both positive and negative pressures
Determines the maximum design pressure
Consists of 9,000 total pressure cycles
Conducted on test assembly after it impact testing
Vinu Abraham
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Cyclical Pressure Testing
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Positive/negative pressures applied to glazing systems
4.2
Glazing Performance
Pass/Fail Criteria
Impact Test No penetration of the
missile
No tears in the interlayer
No hardware failure
No anchorage failure
Cyclic test Same as impact test
System as whole must remain together
Vinu Abraham
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Air, Water & Structural
Three Independent Test: Air infiltration testing Water penetration testing Wind load structural testing
Vinu Abraham
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This is completely independent from impact & cyclical test!
Product Approvals
Information Available On-Line Consult with Manufacturers Review approval documentation
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Product Approval Documents
What to look for: Design Pressure Size of Tested Assembly Glazing Anchors Mullions
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NOA - Items to Consider
1. Request copy of NOA prior to specifying on project
2. Verify NOA is valid at time of permit
3. Verify NOA is suitable for project application – large missile vs. small missile
4. Verify sizes and design pressures specified on NOA encompass the needs of the project application
5. Verify sizes and design pressures
6. Testing typically takes 3 to 6 months
7. NOA’s are typically valid for 5 years (Dade Co.)
8. Some jurisdictions will accept test results in lieu of NOA
Vinu Abraham
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Design Criteria for Calculations
2. Exposure Classification 3. Building Importance
4. Mean Roof Height 5. Unit Size 6. Wall Location (Building Zone)
1. Wind Speed Zone
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EXAMPLE: Design Calculation for Impact Window
1. Unit installed in Building Zone 5 of the structure 2. Mean roof height of 30’ 3. Window product is 3’ x 4’ = 12 square feet 4. Home located in wind zone of 140 mph
– Large missile requirement – Positive & negative design pressures of +33.7/–36.7
based on Table R301.2(2) calculated for Exposure B (R301.2: climate & geographic design criteria)
5. Home located in exposure “C” requires adjustment coefficient of 1.40 in accordance with Table R301.2(2)
– +33.7 x 1.40 = +47.18 (positive design pressure) – -36.7 x 1.40 = -51.38 (negative design pressure)
Design Pressure (DP) required is +47.2/-51.4
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Designing with Mahogany
Mahogany windows and doors offers designers and home owners the highest quality products
and the most distinguished beauty in the industry!
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Mahogany Features & Benefits
Custom design, creating unique beauty
Thermal performance, meeting the most stringent energy requirements
100% Mahogany, provides ultimate beauty & superior weather Resistance
Ability to achieve high design pressures
Capable of achieving large sizes for impact resistance
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Mahogany Windows
Product design options
Hardware & component options
Craftsmanship & quality
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Product Selection & Specifications
Submit design concepts to manufacturer
Define code requirement
Specify design requirements
Interior & exterior design selection
Section Three 38
Critical Glazing Variables
Size windows (based on glass performance) Insulated Glass or Monolithic Framing components and system design Method of anchoring the glass Thickness & type of glass interlayer Thermal performance
4.1
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Energy Efficient Windows
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Additional Benefits of Impact-resistant Mahogany Windows
Safety
Security
Solar
Sound
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Items to Consider
Ease of Installation
Energy Efficiency
Warranties
Service & Maintenance
Manufacturers Reputation
Manufacturers References
Vinu Abraham
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Proper Installation Is Critical
Shim spacing (3/8” maximum) Unique anchoring methods Types of anchors (longer & stronger) Use of installation brackets Installing anchors through sash/
frame into the openings
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Warranties & Maintenance
Understand the limitations of the warranty
A good warranty should cover all components of the window and door system
A good maintenance program will bring value to the warranty and maintain the life of the product
On-going maintenance with Mahogany windows and doors is critical
Section Three 44
Reputation & References
Reputation is extremely important when a client is investing in high end custom windows and doors
Get to know the company you are committing to
References should be requested on projects that have been completed in the last 12 months
A good reference will share their experience and level of satisfaction with the product
Section Three 45
Designing for Impact with Mahogany Windows & Doors
Summary
Approved for Wind-Born Debris
Custom Design
High Design Pressures
Designed for Impact
Natural Resistance
Energy Efficiency
Beauty of Mahogany
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Thank you for your time!
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Questions?
This concludes The American Institute of Architects Continuing Education Systems Program
For additional information on mahogany impact windows and doors please visit: www.peetzwindows.com
Thank You
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Copyright Materials
This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without written permission of
the speaker is prohibited.
© Peetz Windows and Doors, 2008
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