Crawford Tracey Corporation is a glazing systems company founded in 1956 that provides innovative glazing solutions. They developed the first impact-resistant four-sided structurally glazed system in the U.S. The document discusses wind load requirements and design parameters for glazing systems in high velocity hurricane zones (HVHZ) and the importance of product approval and testing to withstand wind loads and debris impact. It also covers various glazing system design options for HVHZ areas.
11. Crawford Tracey Corporation 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.
48. For additional information on commercial glazing systemsplease visit: www.crawfordtracey.com Thank You This concludes The American Institute of Architects Continuing Education Systems Program
Editor's Notes
AIA statement that Peetz is an approved provider (don’t spend time reading)
You will have a basic understanding of how a hurricane effects a building structure You will have a basic understanding on the wind-borne debris code requirements for impact resistant windows and doors You will learn about product approvals and design options for mahogany impact resistant windows and doors You will learn about the various design criteria and how to specify mahogany impact resistant windows and doors
Wind-borne debris regions are defined as areas along the Atlantic and Gulf Coasts where the design wind speed is 120 mph or above, or within one mile of the coastal mean high water line where the wind speed is 110 mph or above. In these regions, the standard requires the designer, either an engineer or an architect, to assume that the windows and doors will be broken by wind-borne debris unless those openings are protected against such items. Protection can be achieved through the use of hurricane shutters or impact-resistant glass The wind-borne debris region extends about five miles inland in most cases and considerably further in others. But, in the Panhandle region (sections of northern Florida from the Walkula/Franklin County line to the western edge of Escambia County), the legislature designated the wind-borne region as the land within one-mile of the Gulf Coast. ASCE Methodology reference by Florida Building Code Uses a series of calculations to include wind speed, size, shape and location of building. Resulting design wind load is expressed in Pounds per Square Foot (PSF)
Here is an outline of the missile levels specified in the ASTM E 1996 document along with their description and intended impact speed – we have also listed some typical areas of use for these missiles. Note: Level A is equivalent to small missile for the H igh V elocity W ind Z one (Dade County), and Level D is equivalent to the large missile for the HVWZ. Missile A is most common for small missile requirements, 30’ above ground level Missile D is most common for large missile requirements up to 30’
Designed to simulate both positive and negative pressures exerted by a hurricane on structures Plays a role in determining the maximum design pressure for which a product is approved Consists of 9,000 total pressure cycles that range from 1 – 3 seconds in duration Test is conducted on test assembly after it has undergone impact testing