Designing for wind-borne debris with mahogany windows and doors

1. WELCOME
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4. “Designing for Wind-Borne Debris with
Mahogany Windows & Doors”
Peetz Windows and Doors, continuing education program for architects.
AIA Course Reference: PTZ101
This course qualifies for 1.0 LU AIA/CES credits
Oct09 v1
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5. 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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6. “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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7. 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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8. United States - Areas of Risk
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9. Saffir-Simpson Hurricane Scale
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10. The Dynamics of a Hurricane
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11. 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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12. Wind-Borne Debris Regions
 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
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13. Codes & Standards for Wind-Borne Debris
TDI
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14. U.S Wind Speed Map
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15. State (regional) Wind Speed Maps
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16. Florida Wind Speed Map
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17. 4.1
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)
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18. 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
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
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19. 4.1
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
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20. Product Characteristics
Windows and doors designed for Wind-borne debris
regions will have the following characteristics:
 High design loads
 Impact resistant glass
 Missile impact approval
 Cyclical pressure test
 Specific design pressures
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21. Glazing Design Requirements
1. Large missile or Small missile
2. Cyclical Loading
3. Air, Water & Structural
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22. Impact Missile Requirements
Wind Zone 1 – 110mph
Wind Zone 2 – 120mph
Wind Zone 3 – 130mph
Wind Zone 4 – 140mph
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23. Large Missile Simulation
Vinu Abraham
Category Wind Speed
1 74 mph to 95 mph
2 98 mph to 110 mph
3 111 mph to 130 mph 110 to 120 mph
4 131 mph to 155 mph
5 >156 mph
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24. 4.2
Large Missile Test
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Missile Video

25. Cyclic Pressure Testing
Vinu Abraham
 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
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26. Cyclical Pressure Testing
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Cyclical Video

27. 4.2
Glazing Performance
Positive/negative pressures
applied to glazing systems

28. Pass/Fail Criteria
Vinu Abraham
Impact Test Cyclic test
 No penetration of the  Same as impact test
missile
 System as whole
 No tears in the must remain
interlayer together
 No hardware failure
 No anchorage failure
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29. Air, Water & Structural
Vinu Abraham
This is completely independent from
impact & cyclical test!
Three Independent Test:
 Air infiltration testing
 Water penetration testing
 Wind load structural testing
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30. Product Approvals
 Information Available On-Line
 Consult with Manufacturers
 Review approval documentation
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31. Product Approval Documents
What to look for:
 Design Pressure
 Size of Tested Assembly
 Glazing
 Anchors
 Mullions
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32. NOA - Items to Consider
Vinu Abraham
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
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33. Design Criteria for Calculations
1. Wind Speed Zone 2. Exposure Classification 3. Building Importance
4. Mean Roof Height 5. Unit Size 6. Wall Location (Building Zone)
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34. 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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35. 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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36. 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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37. Mahogany Windows
 Product design options
 Hardware & component options
 Craftsmanship & quality
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38. Product Selection & Specifications
 Submit design concepts to
manufacturer
 Define code requirement
 Specify design
requirements
 Interior & exterior design
selection
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Section Three

39. 4.1
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
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40. Energy Efficient Windows
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41. Additional Benefits of
Impact-resistant Mahogany Windows
 Safety
 Security
 Solar
 Sound
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42. Items to Consider
Vinu Abraham
 Ease of Installation
 Energy Efficiency
 Warranties
 Service & Maintenance
 Manufacturers Reputation
 Manufacturers References
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43. 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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44. 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
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Section Three

45. 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
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Section Three

46. 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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47. Thank you for your time!
Questions?
This concludes The American Institute of Architects
Continuing Education Systems Program
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48. Thank You
For additional information on mahogany impact windows
and doors please visit: www.peetzwindows.com
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49. 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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