120 mph wind zone - impact glass windows
kritlyn
17 years ago
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oberon476
17 years agolast modified: 9 years agoRelated Discussions
Various 120mph wind building code requirements
Comments (6)Thanks all, when I get it, will put it here. And brickeyee, yes,about the "minimum", like I said "safety first". I'm going to be living in this place and like that peace of mind. Recently was in western New York,a young man out of builders tech school, told me about builders he knew using Trex for structure. Last time I knew, it's not made for that, feel free to correct me if I'm wrong. Didn't find out where in structure, but the thought scares me....See More“hurricane proof” windows.
Comments (17)okay then.... Nope, not a salesman, I don't sell a thing. I actually like "rants" like yours because they can be fun to reply too. In your case it's fun and challenging because there is just so much that is simply wrong. Not misunderstanding or misinformation of the details; nope, just wrong. "The testing standards in the U.S. also allow for products to pass a test a single time for approval. It is not uncommon for a hurricane window manufacturer to send 10 windows of identical size and simply test each on until 1 of the 10 window passes the test. Basically under U.S. testing standards their products can fail 9 out of 10 times during testing, and be approved for sale to the public." Okay, did you just make this one up for your post, come on be honest, you really did just make this one up hoping no one would notice, right? If you didn't make it up then where in the world did you ever find it? Seriously, I have never heard this one before, even from the most adamant anti-impact window advocates that I have chatted with, and I have met some serious anti-impact window folks in the past; typically shutter sales-folk in most cases of course. In reality, testing does allow for one unit in four to fail the testing and still pass the overall. Now if you want to argue the validity of a 75% pass rate, that would be a valid discussion, but your assertion is ridiculous and has no basis in reality. "The hurricane glass manufacturers are also afforded dubious help during the testing process. These companies are allowed to leave additional calking all around the glass, where it is held in the frame. This extra calk aids in passing the impact test, and the follow up test, which is called the cyclical static pressure load test, where a simulated wind load is placed on the product being tested." Come on, really? Seriously? This would be the most laughable thing that you posted if you hadn't posted the previous statement that I just commented on. I mean seriously? And btw, STATIC - lacking in movement, action, or change CYCLICAL - recurring in a repeated sequence of events In the impact window world cyclical and static loading are two different performance tests. You might have understood the differences between them if you actually understood the meaning of the terms cyclical and static before you wrote them down. "Hurricane resistant glass, constructed of a single glass panel, regularly fails on impact tests over 50 mph, and almost always when the impact is at 75 mph or half the wind velocity of a Category IV hurricane." "Much of this single pane impact resistant glass, failed during Hurricane Wilma in 2005, and Wilma was not a major hurricane. " Are you talking about single pane tempered glass or monolithic laminated glass (not IG), or do you even know the difference? I don't think you actually do know the difference based on your posts. Do you know the difference between the Miami-Dade County large missile and small missile tests? Have you even heard of the ASTM E1996 test? Not to even mention the different requirements of level A-E missile performance? Yes, there was massive failure of TEMPERED glass during Wilma and while anti-window folks were all screaming about "baffled experts", the only people who were baffled by the failures were the folks who watered-down the MDCA small missile requirement prior to Wilma. Following Wilma the small missile test requirement was changed back to a realistic level, AND if you want to discuss that specifically, such as why it was changed and why it was inadequate, we can do so at your convenience. But the LARGE missile requirement hadn't been touched and windows certified to the LARGE missile requirement didn't fail. They performed as tested and as required. Not so much for plywood and shutters btw. At the basic level, any reasonable code has to meet three basic objectives: 1) is it practical, 2) is it affordable, 3) is it effective. If it meets those three requirements it is a good code. If it doesn't its a bad code. You are clearly enamored with the Aussie code, but does it meet the three basic objectives? Australia is divided into four different wind zones - A, B, C, D. Our deficient US impact code meets the requirements of zones A and B, and it used to meet C and D. But somewhere along the way the Aussie's forgot about the three objectives and mandated an unrealistic requirement for C and D. Not unrealistic because the "glass manufacturers" couldn't meet it, but because it misses on practical and affordable. It isn't just the glass, it's the frame, and the sash, and the hardware, and the wall. And btw, I didn't have to "research" the Aussie requirements, I knew them (not that I would claim to be an expert on them, I am not). Feel free to look them up and correct me if I am wrong. As I read thru your posts why am I getting a mental image of a printed-out power point presentation laminated in a three ring binder with lots of pics of failed windows and so on? Just saying that's my impression of your posts...but whatever. And all modesty aside, Mr."expert", you are in my yard when you talk about this stuff and if you want to play on my playground bring your A-game next time. Have a good day....See MorePGT vs CWS for Impact Windows
Comments (84)DO NOT BUY PGT WINDOWS! SIX YEARS AGO WE BOUGHT OVER $47,000.00 WINDOWS AND SLIDERS (7 SLIDERS) - as of yesterday I just filed / called for replacement of our fourth sliding glass panel doors - these are the Miami Dade double insulated with all the extras - failing. The seals do not hold. The company we bought the window/sliders from does not like going thru all the trouble to replace and then reinstall....they can charge me whatever price they want for labor. PGT will replaced the windows - they will probably say "out of warranty" - it is very unclear just exaclty what their warranty is (!). Do NOT do business with PGT....I am at the point of just replacing every defective window with a different brand .....this is so unfair and unprofessional and poor business standards.......See MoreNeed advise for the impact glass windows and doors.
Comments (4)Sorry for the bad format, its phone copied from a pdf file put out by University of Florida has few sources and names. "There are testing standards set forth by the American Society for Testing & Materials (ASTM) and/or others that must be met before a window is certified as being impact-resistant. One of the most stringent testing requirements is referenced in the High Velocity Hurricane Zone (HVHZ) section of the Florida Building Code, which applies to Miami-Dade and Broward Counties. Every exterior opening, residential or commercial, must be provided with protection by shutters or impact-resistant windows against wind-borne debris caused by hurricanes in the HVHZ. The Florida Product Approval System, under the Florida Building Commission, covers products that affect the structural integrity of buildings—therefore windows are included. A company may have its products approved for local or state use. Click on “Product Approval” at www.floridabuilding.org for more information. Note that not all areas of the state require impact-resistant windows. Check with your local building official to determine if you live in such an area. However, if this is a concern, Miami-Dade County has the strictest test protocols in the country for wind-borne debris, air and water tests. The Florida Building Commission recognizes products receiving Miami-Dade NOAs as state-approved products."...See Moremiruca
17 years agolast modified: 9 years agomike35
17 years agolast modified: 9 years agooberon476
17 years agolast modified: 9 years agomominc
16 years agolast modified: 9 years agotasha_grower
16 years agolast modified: 9 years agooberon476
16 years agolast modified: 9 years agotcjohnsson
15 years agolast modified: 9 years agooberon476
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