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  Does Arpal Defender offer Blast window solutions for historic buildings that will allow us to maintain the existing windows?


If we decide to replace the existing windows, can Arpal Defender design and manufacture a Blast window which looks similar to the existing window?
 

How do we know what Blast levels we need? What are the current standards and codes being enforced?

How heavy are your windows?

Do I need to install additional steel reinforcement in the building to accommodate Arpal Defender's window solutions?

In the event of a fire inside the building, can the windows serve as an egress option?

Have Arpal Defender's products been tested for performance for GSA standards?

Have Arpal Defender's products been tested for performance for the Department of Defense Anti Terrorism Construction Standard?

Have Arpal Defender's products been tested for performance for the Department of State standards?

Do Arpal Defender's products meet the "Buy American Act" requirements?

What are the hazards that a Blast protecting window should eliminate? Do Arpal Defender products eliminate these hazards?

I noticed that some of Arpal Defender's products have a cable and others do not. Why is this?

How do your products anchor to the window opening? Who handles installation of Arpal Defender's windows? Is training required?

  Q. Does Arpal Defender offer Blast window solutions for historic buildings that will
allow us to maintain the existing windows?


Yes. Arpal Defender offers seven types of solutions:

1. Arpal Defender 9.83S: An Energy Absorbing Blast window, specially engineered to meet the highest Blast protection requirements. The nature of the glass allows for egress after Blast event, even if the window has deformed and can not properly open.
2.Arpal Defender 9.83: An Energy Absorbing Blast window, specially engineered to meet the lower Blast protection requirements. 3.Arpal Defender 9.38A: A horizontal sliding Blast window, enables the window to absorb most of the Blast pressure, transferring only minimal loads to the wall structure. Well suited for installation in facilities where energy efficiency, low maintenance and durability are required.
4. Arpal Defender 9.35A: a single/double hung window that allows for direct installation into the soft & brittle masonry. It's Energy Absorbing System enables the window to absorb most of the Blast pressure.
5. Arpal Defender 9.55: A Blast Curtain Wall can be designed for any required architectural shape. Allows for use in a weak wall without the need for costly structural reinforcement.
6. Arpal Defender 9.85: A combined protection window against Ballistic and Forced Entry. Withstands a 15 minutes Forced Entry attempt.
7. Arpal Defender 9.48: A hinged window that allows maintenance personnel to operate the window by a removable handle.
8. Arpal Defender 9.46: A demountable window that allows the maintenance personnel to remove the entire glazed panel and to reassemble it without affecting the blast capacity of the window.
9. Arpal Defender 9.10: A cable catch system incorporated with anti-shatter film or laminated glass. The cable does not interfere with the window maintenance. This is a simple system that is installed behind the existing window to enhance, the protection of the window.

Q.If we decide to replace the existing windows, can Arpal Defender design and manufacture a Blast window which looks similar to our existing window?
Yes, Arpal Defender can redesign each one of its existing window models to have a similar look to the existing or historic window.

Q.How do we know what Blast levels we should be designing for? What are the current standards and codes being enforced?
There are various ways to approach this issue:

1.Hire a Blast consultant who will prepare a detailed study of the building and the relevant threats.

2.Apply the requirements of the relevant standard according to the agency that controls/operates the building, whether GSA, Department of Defense, or Department of State.

Arpal Defender will be happy to consult and direct you to the right approach according to your type of building and specific threat environment.

Q.How heavy are your windows?
The weight of the window is according to the protection type and level. For instance, a Blast window in some cases can be similar to that of any other architectural window.

Q.Do I need to install additional steel reinforcement in the building to accommodate Arpal Defender's Blast window solutions?
Arpal Defender's
product family, are energy absorbing, which means that they are designed and built to absorb the Blast energy and transmit only limited loads to the surrounding structure. Hence, in most cases, even where extremely vulnerable walls are involved, there isn't any need for structural steel reinforcement. Arpal Defender will design the proper installation method for your specific project situation.

Q.In the event of a fire inside the building, can the Blast windows serve as an egress option?
Yes. Arpal Defender's windows are glazed with laminated glass with a PVB interlayer. This glass make up can be easily overcome by a firefighterís axe or any other metal tool. An additional option is the installation of an operable window that can be opened either for smoke evacuation or for egress. It is also possible to equip the window with a removable handle that will be kept in a small glass box near the window. This will allow any person in the building to open the window in the event of emergency but will disallow opening the window on a daily basis.

Q.Have Arpal Defender's products been tested for performance for GSA standards?
Yes. Several of Arpal Defender products have been
tested and proven to meet the GSA Performance Condition up to level 2; Protection Level: Very High& Hazard Level: None.

Q.Have Arpal Defender's products been tested for performance for the US Department of Defense Anti-Terrorism Construction Standard?
Yes. Several of Arpal Defenderís products have been tested and proven to protect against all types of relevant threats according to the DOD AT Construction Standard.

Q.Have Arpal Defender's products been tested for performance for the US Department of State standards?
Yes. Several of Arpal Defenderís products have been tested for performance against some of the DOS typical threats.

Q.Do Arpal Defender's products meet the "Buy American Act" requirements?
Yes - Arpal Defender's products are manufactured both in Israel and in the United States. Israel is exempt from the "Buy American Act". Contact Arpal Defender for the details of the legal opinion.

Q.What are the hazards that a Blast protection window should eliminate?
There are three types of hazards that should be reduced by using a protective glazing system:
1. Fragmentation of the window's glass and frames.
2. Secondary fragmentation of objects located in the room (such as furniture, computer screens, light fixtures, and vases) created by blast infiltration into the building.
3. High infiltrating blast pressures cause irreversible damage and injuries to people inside the building.

Arpal Defender's products eliminate or greatly reduce all three of these hazards. Windows are designed to partially collapse at a blast event. The window deformation may create some openings between the window frame and the wall or between the glass and the frame; however, the Blast infiltration through these openings is minimal and not sufficient to create the aforementioned hazards. This is due to the slow reaction time of the window in comparison with the duration of the blast. Arpal Defender has proven this through measurements in many blast tests.

Q.How do your products anchor to the window opening?
The basic installation technology for Arpal Defender products is simple and reliable. This technology has been tested hundreds of times in full scale live blast tests and has been applied successfully in thousands of installations. Arpal Defender designs the installation specifically for each project according to the type of wall, the window model and the architectural requirements. The anchoring requirements do not differ much from those of regular commercial windows.

Q.Who handles installation of Arpal Defender's windows? Is special training required?
Arpal Defender custom designs the installation to meet the exact requirements for every project. The installation may be performed by any experienced window installer. Arpal Defender consults with and trains window installers on each installation.

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