More oddities: School District budget doesn't not include security door | |
| Anonymous Coward (OP) User ID: 1280257 12/23/2012 02:51 AM Report Abusive Post Report Copyright Violation | |
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| Bowyn Aerrow User ID: 28433574 12/23/2012 06:00 AM ![]() Report Abusive Post Report Copyright Violation | If its glass and tempered it may actually shatter into a billion pieces - much like the side glass of a car does. If its 'security' rated, then it has an added layer which holds it together, like a windshield. Understand the glass still shatters (being tempered into many tiny pieces) but the plastic/rubberized layer holds it in place and that an be broken through or shot through rather easily. Security glass is to slow a person down. It is not bullet proofed, meaning having many layers and designed to stop bullets. That would make for a very thick door and would look very odd on regular doorways. Only solid steel doors for a regular door way would have prevented him from getting in before police arrived. They can't do that to a school front... There is a point where you basically turn a school into a prison while making it super secure. "My Dog, its full of fleas!" -David Bowwow “A paranoid is someone who knows a little of what's going on. A psychotic is a guy who's just found out what's going on.” - William S. Burroughs |
| Anonymous Coward (OP) User ID: 1280257 12/23/2012 02:34 PM Report Abusive Post Report Copyright Violation | If its glass and tempered it may actually shatter into a billion pieces - much like the side glass of a car does. Quoting: Bowyn Aerrow If its 'security' rated, then it has an added layer which holds it together, like a windshield. Understand the glass still shatters (being tempered into many tiny pieces) but the plastic/rubberized layer holds it in place and that an be broken through or shot through rather easily. Security glass is to slow a person down. It is not bullet proofed, meaning having many layers and designed to stop bullets. That would make for a very thick door and would look very odd on regular doorways. Only solid steel doors for a regular door way would have prevented him from getting in before police arrived. They can't do that to a school front... There is a point where you basically turn a school into a prison while making it super secure. With all due respect, all "safety glass" is "tempered" to increase its strength. In this context, there is no such thing as "security glass" as you call it...just different "grades" of safety glass. [link to en.wikipedia.org] An example...All car glass is "tempered" or "safety glass". Side & rear window glass is simply "tempered" [lowest "grade"] and, yes, as you said, it breaks into tiny pieces. All front windshield glass is "laminated, tempered glass" and, as with the side/rear glass breaks into tiny pieces, but with the added "laminated plastic layer" the tiny pieces remain together as one unit, adhered to the laminate. "security glass" as you call it, is simply multiple layers of "laminated glass" Shoot a rear/side window in a car and the whole piece of glass will shatter into tiny pieces and fall. Shoot a front windshield in a car and a hole will appear and the shattering will be localized around the hole, but the whole piece of glass will remain intact. The point being...any window, say, in a classroom, would be standard low grade, tempered glass. Stronger than regular glass, break it and it shatters into tiny pieces and falls to the ground. The newly installed security doors would have utilized a laminated safety glass material [they use to use a thin wire mesh in school door glass]. Shooting it would not have caused it to shatter & fall. To "shoot a hole big enough to walk through" would take considerable time and ammo [and incredible accuracy] to essentially "cut" a hole out of the plastic-laminated glass in the opening. Go fire some rounds into a car windshield at the junkyard...see how long it takes to create a hole you can walk through. It would seem implausible to enter the building by shooting a hole in the new security door glass and walking through it. |