The Building Envelope

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MIAMI, Florida, United States

Saturday, December 19, 2009

Forensic Investigation of Glazing

The steps in determining what went wrong is to:

1. Determine the design criteria (applicable code).
2. Identify the specifications for the project provided by Architect or Engineer.
3. Confirm project design wind loads.
4. Review shop drawings & calc's for compliance w/ code & project specs.
5. Review product NOA's or State approval documents.
6. Perform inspection to confirm product and installation.

Things to look for:

Design:

1. Proper wind load factors and tributary areas.
2. Adherence to limitations of product NOA's or State approvals.
3. Allowable stresses of steel and aluminum.
4. Allowable load of anchors including (edge, spacing & cantilever reductions)

Installation:

1. Check product for compliance with NOA's or State approvals.
2. Check glass type & interlayer.
3. Check anchor types and shimming including substrate conditions.

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