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
4
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.
5
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
6
7. Top Ten Most Destructive Hurricanes (Atlantic)
Note: damages are listed in US Dollars and are not adjusted for inflation
Source: www.mthhurricane.com
7
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
11
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
12
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)
17
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
18
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
19
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
20
21. Glazing Design Requirements
1. Large missile or Small missile
2. Cyclical Loading
3. Air, Water & Structural
21
22. Impact Missile Requirements
Wind Zone 1 – 110mph
Wind Zone 2 – 120mph
Wind Zone 3 – 130mph
Wind Zone 4 – 140mph
22
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
23
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
25
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
28
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
29
30. Product Approvals
Information Available On-Line
Consult with Manufacturers
Review approval documentation
30
31. Product Approval Documents
What to look for:
Design Pressure
Size of Tested Assembly
Glazing
Anchors
Mullions
31
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
32
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)
33
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
34
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!
35
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
36
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
39
41. Additional Benefits of
Impact-resistant Mahogany Windows
Safety
Security
Solar
Sound
41
42. Items to Consider
Vinu Abraham
Ease of Installation
Energy Efficiency
Warranties
Service & Maintenance
Manufacturers Reputation
Manufacturers References
42
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
43
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
44
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
45
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
46
47. Thank you for your time!
Questions?
This concludes The American Institute of Architects
Continuing Education Systems Program
47
48. Thank You
For additional information on mahogany impact windows
and doors please visit: www.peetzwindows.com
48