GLASS PROTECTION

1
GLASS PROTECTION

• By
• Michael Serrania

2
Outline

• Why
• Types of Glass
• Testing and problems
• Standards
• Insurance Coverage
• Conclusion

3
Introduction

• Dallas Ft. Worth Tornado
• 157 million damage to public and commercial
  buildings
• glass fell from buildings
• sometimes as heavy as 200 LBS.
• Houston Chronicle May 30, 2000

4
Why should we worry about the type of glass?

• Important to protect against
• wind
• damage to assets in the
• building
• injury of employees

5
Types of glass

• Tempered glass made rapidly by heating and
  cooling annealed glass.
• Most commonly found in homes
• Laminated glass constructed by bonding a tough
  polyvinyl butryal (PVB) plastic interlayer
  between two pieces of glass under heat and
  pressure to form a single piece
• most commonly found in commercial structures

6
Types of glass Continued

• Annealed glass Single-paned, most commonly found
  in homes
• Windborne Missiles Objects that are carried into
  the air from the winds of a storm

7
Laminated Vs Tempered Glass

• Crumbles into tiny cubes when broken
• reduces large glass shards
• But, still can produce glass shards
• spontaneously break
• Must fit exact openings
• cheaper than laminated

• Reduces danger of flying glass
• resists penetration by debris
• But, it costs 30 more than tempered
• lgic.glass-info.com

8
Testing Methods

• ASTM Test
• A witness sits 9 ft. away from the blast, behind
  a piece of glass
• GSA Test puts an aluminum foil sheet 10ft. From
  the test specimen
• Glass shards go into the foil simulating
  wind-borne missiles

9
Problems with Testing

• 9-10 ft. not a safe distance (OK City Bombing)
• States have different standards
• Hawaii
• Texas
• Florida
• New York (Long Island)

10
States with Standardsfrom lgic.glass-info.com
11
Insurance Coverage

• Plate glass insurance
• Ornamentation
• glass replacement during aftermath
• boards up windows
• removal of broken glass
• Trieschmann p.187

12
Conclusions

• Laminated glass is best
• Protect your assets in the business
• employees
• operations
• All states need to have the same standards
• Laminated glass is expensive