General Category => Training & Seminars => Topic started by: 68jk09 on December 31, 2016, 12:05:14 AM

Post by: 68jk09 on December 31, 2016, 12:05:14 AM
I recently noticed during renovations of the NYCHA Pomonok Houses near QNS College that all the windows were being replaced......subsequently i came across some info on this which may or may not impact FD ops (i would think that what was done here could be expected Citywide in NYCHA Projects) addition to replacing deteriorating frames & sills the focus was placed on the large number of broken windows in the bldgs so the former typical 1/8" glass in the double hung replacements was upgraded to 3/16" .....the manufacturer stated.... "Whether something is thrown at the window from the interior or exterior the thicker glass would be very difficult to break".....they also state that w/the thicker window (oddly) there is a decrease in thermal efficiency so they double the amount of low-e coating a product aimed at refracting the sun back to the exterior to protect residents from the suns harmful rays" from a FD prospect will the thicker glass hinder us ? ....& will the doubling of the low-e coating mean anything to us ?

Title: Re: WINDOWS.
Post by: tperez102 on January 06, 2017, 07:48:46 PM
Hello 68JK09 ,

It took me awhile find this but it is an important issue that firefighter's now have to adapt too. I found it on Firehouse mag website. I hope it answers the approach and procedures in place and why.

Firefighters in Florida had their hands full with the weather in 2004. First it was Hurricane Charley, then Hurricane Frances, followed by Hurricanes Ivan and Jeanne, all within two months.
 Many of the homes in Florida that withstood the hurricane-force winds have what are called “hurricane windows.” Hurricane windows can be of a variety of types and sizes, including double-hung, casement, patio, sliding-door and fixed types. The windows made with at least two layers of glass and plastic between the layers of glass. The glass is heated in an oven and pressurized at the same time, creating a glass that can withstand impacts. The glass is similar to the safety glass found in automobile windshields. A hurricane window can have as many as three layers of glass, and argon gas may be pumped between the third pane of glass and the two pieces that are joined together.

 Hurricane windows are now required by every state along the Eastern Seaboard from Florida to New York, with new Connecticut and Massachusetts building codes taking effect by 2005. These windows are required by local building codes according to the force of the winds that may be encountered.

 Does that mean firefighters in Chicago, Dallas and San Diego – and everywhere in between – do not have to worry about hurricane windows, since usually they don’t have hurricanes? No! These windows are being sold in many locations as “impact-resistant windows” and “vandal-resistant windows.” For example, at a recent fire in New Jersey, firefighters found hurricane windows in a mansion.

 Suburban homeowners are being sold these windows to better protect their homes from intruders. Urban builders are even installing these windows in new construction and renovations to address possible terrorist concerns. They also have been found in public buildings such as housing projects because they resist vandalism. Another place they may be found is in hospitals and other institutions so that people who are being treated inside cannot break windows and get out.

 Hurricane windows are tested through the use of large and small missiles. The large missile test involves a beam that measures two inches by four inches by six feet and weighing approximately nine pounds that is fired at a window by an air cannon at 50 feet per second, or 34 mph. This is done twice and then the glass is subjected to 100-mph winds 9,000 times. If the window does not allow a hole larger than 1/16 by five inches to be made in the inner layer of glass, then the window is approved.

 In the small missile test, 10 ball bearings are fired at a window at 80 feet per second, or 50 mph, and then it is subjected to a wind test. If it passes, it is certified as a hurricane window.

 Hurricane windows being installed in new construction.

 Hurricane windows impact firefighting operations in a variety of ways. First and foremost, if the interior search team advances beyond the fire for a search and becomes trapped, the firefighters may not be able to exit the structure from the interior. In test done by a fire department in Florida, it took a firefighter equipped with the usual hand tools over five minutes to exit a hurricane window. If these windows are found, interior operations must be adjusted.

 Second, ventilation from the interior and exterior will be affected, as a firefighter on the exterior may try to vent the windows and find it difficult to do with the usual tools. The Florida test found that a power saw is the fastest and most complete tool to use on hurricane windows, although such a saw may not be available on the interior and hand tools would be a firefighter’s only option.

 A firefighter performing exterior ventilation may be the first responder to determine the presence of hurricane windows. If the firefighter hits a window and the tool bounces off the glass, it may be impact-resistant glass. This member should call for a saw or obtain one from an apparatus, since using a power saw is the best way to take the glass out of these windows from the exterior. Cut the top and two sides and lay the glass over to create an exit. Three cuts are required and the glass will remain in place as the firefighter exits.

 Members with hand tools must make a hole in the glass. The halligan and axe are the best hand tools to use in this situation. As with a saw, the axe is used to cut the top and two sides. If a firefighter is using a halligan, the fork end is recommended as the best way to get through a hurricane window, since the point can become lodged in the plastic inner layer. Use the fork to cut and rip the window on the top and both sides. This, however, requires time and energy, which a trapped firefighter may not have.
 A window sticker indicates the type of window used in a structure. Any firefighter who sees such a sticker should note the type of window and document the address.

 The best way to overcome these windows is to be aware of their presence before you enter a structure. This can be accomplished by visiting construction sites and finding out what kind of windows are being installed. If you know that hurricane windows have been or are being installed in a particular occupancy, enter that information into your fire department’s database and pass it on to all firefighters who may respond to that address.
Title: Re: WINDOWS.
Post by: 68jk09 on January 06, 2017, 07:59:22 PM
tperez102..... Thanks very much for this informative post.
Title: Re: WINDOWS.
Post by: tperez102 on January 06, 2017, 08:22:40 PM
No problem i know the truck guys have already come up with a fix for entry. They're really good at coming up with in house solutions. 
Title: Re: WINDOWS.
Post by: jking7 on January 06, 2017, 10:52:30 PM
I had a fire in a low income townhouse in New Haven. Hurricane windows and screens were installed for security.
Interior companies attempted to ventilator but could not break the window. Screens could not be compromised from the exterior.
We decided to treat these as window bars and to special call additional companies to manage the issue.
VES is nearly impossible except for power tools but more importantly a brother forced to attempt a bail out will likely face a bad outcome.
Pre incident recognition is our best defense.
Title: Re: WINDOWS.
Post by: 68jk09 on January 06, 2017, 11:26:29 PM
In a low rise project i don't think the window/frame would stand up to the tip of an Aerial.
Title: Re: WINDOWS.
Post by: jking7 on January 07, 2017, 12:33:10 AM
Due to the set back, trees and parking an aerial wouldn't have access to many of the units.
Title: Re: WINDOWS.
Post by: 68jk09 on January 07, 2017, 01:30:09 AM
There is access in many parts of NYC.
Title: Re: WINDOWS.
Post by: tperez102 on January 07, 2017, 05:57:36 PM
A quick fix would be a exterior frame key or pull latch that would shatter the glass like a spring loaded hammer. Install them on the upper floors 3rd and above I guess . Truck companies will locate these maybe florescent markers once they're located it has to be uniform placement , break the window when it's safe. Sounds simple enough.