Preventable Curtain Wall Failures - Amazon Web Services · Preventable Curtain Wall Failures Best...

Preventable Curtain Wall Failures Kawneer AIA-CESCourse: K_ILFF_12_114Credit: (1) CEH/HSW

Kawneer CompanyTechnology Park / Atlanta555 Guthridge CourtNorcross, Georgia 30092

Architectural Services Team 1-877-767-9107 kawneer.comkawneergreen.com

Preventable Curtain Wall FailuresPreventable Curtain Wall Failures

Best Practices:Kawneer is registered as an Approved AIA CES Provider (J204)

and this course has been approved by AIA in accordance with their

guidelines. This course is not designed to promote any particular

product or manufacturer during the educational portion of the

presentation. AIA members will earn 1 hour CEH /HSW after

completing the online quiz following this presentation.

Preventable Curtain Wall Failures

CopyrightThis 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.

Learning Objectives:

1. Influence of Wind Load on Curtain Wall Design/Selection

2. Importance of Properly Securing Curtain Wall to 2. Importance of Properly Securing Curtain Wall to Surround Condition

3. Importance of Following Manufacturer’s Installation Instructions Addressing Internal Seals

4. Understanding How Curtain Wall Performs and Installation for Proper Performance

Curtain Wall:

• Building Envelope

• Thermal Barrier

• Weather Barrier

• Air Pressure Barrier

• Exterior to Structure

Preventable Curtain Wall Failuresrtain Wall Failures

• Exterior to Structure

• Anchored at Slab Edge

• Moves Independently

• Performs as:

• System

• Individual Lites

Failure Is When Curtain Wall Systems Do Not Meet Ex pectations

With proper understanding of curtain wall systems, most failures are PREVENTABLE!

Main Causes of CW Failures:

• Wind Load Issues

• Improper Perimeter Anchoring

• Improper Critical Seals

• System Performance Restricted

• Ensure System Will Withstand Project Conditions

Design Load Drivers Include:

• Wind Load

Proper System for Project Conditions

• Dead Load

• Hurricane Conditions

• Blast Mitigation

• Seismic

Façade- Components & Cladding• IBC Structural section 1600• Provide Wind Load in PSF

(not MPH)

Proper System for the Project Conditions

Components and Cladding• Design wind pressures in terms

of Positive and Negative PSF

Architect & Structural

• PSF

• Ensure System is Properly Secured to Surround ConditionCondition

Use Perimeter Anchors Engineered for System

Consider Possible End

Reaction!

How will this anchor handle live load deflection?

½" ¾"

Maintain Maintain

Maintain Maintain Proper Proper Caulk JointCaulk Joint

Maintain Proper Caulk JointMaintain Proper Caulk Joint

Maintain Continuity of Perimeter Seals

Proper Use and Location of Shims is CriticalCritical

• Load-Bearing

• Non-Compression

Proper Shimming is Critical to Curtain Wall Perform ance

• High-Durability

Locate Shims Properly Above Anchor (as shown)

Shim at Setting Block Locations

Potential Fastener Shear

• Ensure All Internal Critical Seals are Per Manufacturer’s Recommendations

Proper Attention to Critical Internal Seals

Clean All Surfaces Prior To Application of Sealant

Apply Manufacturer’s Critical Seals

Photos from Wiss, Janney, Elstner Associates

Glass Setting Blocks Must be at Proper Locations Proper Locations

Use Proper Setting Setting Blocks

Gaskets Must be Properly Installed

• Ensure System is Installed Properly for Intended Performance

Size & Locate Weep Holes Properly

This Is Not How You Weep A Curtain Wall

Locate Screws 9" On Center And As Close To The Horizontal Joint

Locate &Torque Pressure Plate Screws Properly

Horizontal Joint As Possible.

Torque Screws To 95 to 100 Inch Pounds

Torque Pressure Plate Screws to Proper Levels

• Ensure System is Properly Secured to Surround Condition

Use Correct System

Secure Properly to Surround Condition

to Surround Condition

• Ensure System is Installed Properly for Intended Performance

Attention to Critical Seals

Allow System to Perform

Kawneer CompanyTechnology Park / Atlanta555 Guthridge CourtNorcross, Georgia 30092

Architectural Services Team 1-877-767-9107 kawneer.comkawneergreen.com

Preventable Curtain Wall Failures - Amazon Web Services · Preventable Curtain Wall Failures Best...

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