I hadn't seen this post when writing previously. The window tint film is=20 similar to the film I refereed to. Wind resistance of structures is a=20 very active topic in the structural engineering/architecture community.=20 The topic continues from just the glass that receives the load from the=20 wind, continues to anchoring the film and or glass to the frame, the=20 frame anchorage to the structure, and the structure able to resist the=20 forces. Most of this is fine details, and retrofit to existing buildings=20 is difficult. The retrofit is mainly driven by insurance companies that=20 either will not cover or at high rates the buildings that do not meet=20 current standards. Building are not alone in resistance to wind damage, one of the more=20 noted is the Kinzua railroad bridge on Pennsylvania, USA. This was once=20 one of the longest, highest bridges in the world, in daily use, until a=20 tornado took down (to the ground) a large part of it. It was very sad. :( See: http://www.dcnr.state.pa.us/stateparks/parks/kinzuabridge.aspx http://www.pennsylvania-mountains-of-attractions.com/kinzua-bridge.html > Quoting cdb: > I really can't see a few stripes of masking > tape doing much to stop shards flying, and thinking that perhaps > window tint (would be far more effective at that). > > Cheers, > -Neil. > > > =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .