Founded in 1956

Provides innovative, high-performance glazing systems

Developed and installed the first impact-resistant four-sided, structurally glazed system in the U.S.

Design Assistance Product Development Single Source Responsibility Control Quality

Curtain Wall Ribbon Windows Structural Glazing Storefront Sliding Doors Entrance Systems Interior Glazing Systems

Impact & Non-Impact Glazing Systems

Florida Hospital Orlando

Florida Hospital Orlando

Nova University Ft. Lauderdale

Florida Hospital Orlando

Nova University Ft. Lauderdale

All Children's Hospital Orlando

Florida Hospital Orlando

Nova University Ft. Lauderdale

All Children's Hospital Orlando

Broward County Courthouse Ft. Lauderdale

Florida Hospital Orlando

Nova University Ft. Lauderdale

All Children's Hospital Orlando

Broward County Courthouse Ft. Lauderdale

CSXJacksonville

Florida Hospital Orlando

Nova University Ft. Lauderdale

All Children's Hospital Orlando

Broward County Courthouse Ft. Lauderdale

CSXJacksonville

Omni Miami

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.

Presented by: Crawford Tracey Corporation

AIA Provider #L491Course #CTC201

1. Understanding wind load requirements and design parameters in HVHZ areas

2. Understand wind-borne debris requirements for glazing systems in HVHZ areas

3. Understanding the necessity for product approvals, specifications and performance features for glazing systems in HVHZ areas

4. Understanding the glazing systems and various design options in HVHZ areas

Windloads determine the types of qualified products for a project and will ultimately be determined by the engineer of record for the project.

Dade County – 146 mph Broward County – 140 mph Monroe County – 150 mph Palm Beach County – 140 mph

Standard Importance◦ Office Buildings◦ Residences

High Importance◦ Schools◦ Hospitals◦ Storm Shelters◦ Special Use

Facilities(greater than 300 people)

Exposure “B”

Exposure “C”

Determined byEngineer of Record

KD = Wind directionality factor

KD = Typically 0.85

Center Zones (Zone-4)

Center Zones (Zone-4)

End Zones (Zone-5)

Using rational analysis under ASCE, the pressure varies based on tributary area.

140"

192"

69"

48"

Sloped glazing products will typically not be under the same loads as vertical components and have different safety factors and testing parameters than vertical components.

Miniature scale model mockup with surrounding buildings.

Placed in a wind tunnel & subjected to wind with sensors attached at various locations on the mockup.

More real time accuracy than rational analysis.

Check local code mandates.

Florida Code requires that wind speed of 120mph or greater will be an Impact System.

Large missile vs. Small Missile.

Wind Zone 1 – 110mphWind Zone 2 – 120mph Wind Zone 3 – 130mphWind Zone 4 – 140mph

4.2

Missile Video

Simulate both positive and negative pressures Determines the maximum design pressure Consists of 9,000 total pressure cycles -4500 / +4500 Conducted on test assembly after it impact

testing

Vinu Abraham

Water Infiltration testing in the lab consists of testing the glazing system by ASTM E331 or E 547 standards

Water Infiltration testing in the field consists of testing the glazing system using the standards; AAMA 502-90 / ASTM E1105 methods A or B, AAMA 501.2-94 “field check”

Metro Dade NOA’sMetro Dade NOA’s Florida Product Florida Product

ApprovalsApprovals Non HVHZ vs. HVHZ Non HVHZ vs. HVHZ

(Dade & Broward)(Dade & Broward) Large & Small Missile Large & Small Missile

ImpactImpact Small Missile ImpactSmall Missile Impact Maximum Design Maximum Design

Pressures for structural Pressures for structural and water resistanceand water resistance

Mullion spacing’s-Single Spans:

Mullion spacing’s-Multi-Spans (if applicable):

Glass capacities:Glass capacities:

Anchor load:

Anchor edge distance requirements:

Typical Edge DistanceInto Concrete & Masonry = 2-1/2” Min.Into Wood Structure = 1” Min.Into Metal Structure = ¾” Min.

Concrete f’c = 3000 PSI Min. (except as noted)Masonry f’m = 1500 PSI Min.

Pre-Glazed Unitized:

Install Video

Stick Built field glazed.

Captured, structurally glazed:

Two Sided, structurally glazed Two Sided, structurally glazed and pressure bar captured:and pressure bar captured:

Four Sided, Structurally glazed, Unitized:◦ HVHZ – no four sided

structural glazing in field allowed (exception is glass replacement)

◦ HVHZ – requires 1% silicone testing during original glazing process.

Advantages of four-sided Advantages of four-sided unitized structurally unitized structurally glazed systems.glazed systems.

Water infiltration is expected during major wind or storm events with the presence of water.

NOA’s will include the testing data that confirms a glazing system’s water resistance performance in the laboratory (ASTM E331 and ASTM E547)

Water Infiltration Testing requirements for glazing systems are NOT specifically stated in Building codes, therefore water resistance may not be required and where designated may vary (+ / -) from the NOA or manufacturer’s lab test DP.

ASTM E1105 Field Water Infiltration Testing is the equivalent to ASTM E 331 and ASTM E 547 lab testing and is typically performed from 15% to 20% of maximum positive design pressure. This usually results in 20 PSF or less – water resistance. A minimal hurricane CAT 1.

A Category 1 Hurricane with minimal winds of 77 miles per hour requires that the glazing system resist up to 15lbs/ft of water, or a head of approx. 3” of gathered water at the sill of the assembly.

Development and Design; Development and Design; Water resistance should be a major Water resistance should be a major priority in the selection process of selecting a glazing system in priority in the selection process of selecting a glazing system in HVHZ areas.HVHZ areas.

Specifications;Specifications; must state that the lab test design pressures are must state that the lab test design pressures are duplicated in the field (on the project). Part 3: Execution.duplicated in the field (on the project). Part 3: Execution.

AAMA guidelinesAAMA guidelines are not as stringent for glazing systems tested in are not as stringent for glazing systems tested in the field.the field.

REMEMBERREMEMBER; The higher design performance requirements for the ; The higher design performance requirements for the resistance for water infiltration…………the better!resistance for water infiltration…………the better!

For additional information on commercial glazing systems please visit: www.crawfordtracey.com

Questions?Ray Crawford

Bill Bonner

954-698-6888

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© Crawford Tracey Corporation, 2010

For additional information on commercial glazing systemsplease visit: www.crawfordtracey.com

Thank YouThis concludes The American Institute of Architects Continuing

Education Systems Program