The course also offers opportunities to discuss specific design considerations that individuals may be facing in the near future. When properly designed, framed, and anchored, blast resistant laminates are capable of maintaining the integrity of the building envelope following an explosion and reducing interior damage. May 05, 2019 blast resistant anchor design software blastresistant window anchor design software brads is a windowsbased tool for the analysis and design of anchoring systems used in blastresistant window glazing. A comparison of existing standards for testing blast. Typical example design problems and their solutions will be presented. Dec, 2017 the gpx blast system uses custom astm e119 rated, fire resistive superlite iixl glazing with one tempered and laminated lite with a minimum interlayer of 0. Blast resistant design martinmartin consulting engineers. As this trend continues to develop, blast resistant glazing will need to deliver both security and energy performance. The software is intended to aid engineers, architects, and manufacturers enhance the resilience of critical infrastructure. Isc security design criteria blast protection levels for windows. Many facilities require enhanced evaluation and design addressing blast resistance and extreme loading effects.
Blast design entails not only building and window design but also the surrounding environment and landscaping, as well as the distance away from the building that a vehicle is allowed i. A bomb blast turns unprotected glass into dangerous flying shards. Electronic reference library as well as establishedpractical design software related to blast resistant design is provided to attendees. The european committee for standardization cen published the first standards for testing blastresistant glazing in 2001. Blast resistant doors are available with glazing that is factory preinstalled. American society of civil engineers, design of blast resistant buildings in petrochemical facilities. The selection and application of blast resistant glass needs specialist advice and there are consultancies who offer advice in this area. The software is intended to aid engineers, architects, and manufacturers to enhance the resilience of critical infrastructure against terrorist bomb. The design purpose for these blast resistant glazed units is to absorb energy and debris from a blast event by deforming in its framing, instead of being rigid in an attempt to deflect the energy. Winlac window lite analysis code is a computer program available from the us.
Blast wave interaction 16 blast waves act on a structure for a short duration blast duration of a large explosive device is 41 milliseconds rouggy hly 18 the time it takes for an eye to blink results typyp y y gically vary for differing materials and construction, according to. The software is intended to aid engineers, architects, and manufacturers to enhance the resilience of critical infrastructure against terrorist bomb attacks and industrial explosions. Whether retrofitting an existing building or building a new one there are minimum blast. By using innovative software approved by most of well known internationally glass producers like pilkington, saint gobain, agc and others we are able to engineer specific glazing applications such as glass stairs and slabs, point supported glass, glass fins, glass canopies, elevators enclosures, blast resistant glazing. How to trasform blast load to static load structural. It works with astm e 0 to help specifiers select the thickness and type of blastresistant laminated glass for fenestration glazing. Offering a full line of blast resistant ballistic products including glass, doors, windows and barriers. Access content please select your options to get access.
Ambico blast resistant windows combine outstanding performance characteristics with the appearance of standard metal window products. Nov 15, 2016 blast resistant windows can present an obstacle to fire fighters who may need to vent buildings for smoke or gain emergency access through windows. The peak pressure value and velocity of the blast wave, which were described earlier, decrease rapidly by increasing the distance between the blast source and the target surface, as shown in figure 2. Glazing hazard mitigation wbdg whole building design guide. Software simulation programs wingard atblast 3dblast blast resistant glazing design astm f2248 standard practice for specifying an equivalent 3. Blast bomb proof partition system wsl firesystem 100 series bomb resistant, bomb proof, blast resistant, antiterrorist, security enhancement there is a vast range of expressions used but it all boils down to the same thing. Our entire range of blast resistant window products is engineered to meet the unique requirements of building projects in a variety of demanding environments. It works with astm e 0 to help specifiers select the thickness and type of blast resistant laminated glass for fenestration glazing. Designed in accordance with astm f2248 standard practice for specifying an equivalent 3second duration design loading for blast resistant glazing fabricated with laminated glass. As commented by norville and conrath norville and conrath, 2006 that no general guideline for blast resistant glazing design is available yet, the current blast resistant glazing design remains.
Blast mitigation design blast resistant products and installation. The authors offer a relatively simple approach to facilitate blast resistant glazing design in terms of traditional window glass design methodologies for laminated glass and insulating glass fabricated with laminated glass. Dod ufc 401001 jan 07, atfp, isc security design criteria for blast protection for windows, astm f 1642. We provide practical, economical solutions, integrated with building architecture, based on sophisticated understanding of dynamic behavior. Fullscale blast tests are used to validate the design development process. Blast resistant glazing systems typically use laminated glass to reduce the risk of flying glass debris in the event of an explosion. On the blast resistance of laminated glass sciencedirect. Blast resistant design is a challenge due to the complexity of not knowing the source or its resulting power. Blast resistant windows products construction materials. Stormglass in independent testing, stormglass met test requirements for large glass sizes up to 50 square feet. Blast resistant glazing in blast enhanced frames or fixed point glazing. The majority of injuries sustained after an explosive attack on a building are caused by flying glass or falling glass, this is known as spawl.
Laws and building and safety codes governing the design and use of kawneer products, such as glazed entrance, window, and curtain wall products, vary widely. Aama impact and blast protection aama aluminum resources. Wingard window glazing analysis response and esign is a computer program d available from the us general services administration. A host of government and nongovernment agencies have addressed the issue of blast mitigation for facilities. The conflicting objectives of fire safety and blast resistance require a balanced design that provides the weakest acceptable laminated glass within the most flexible frame. Bureau of alcohol, tobacco, firearms, and explosives table of distances for storage of explosive materials high council on tall buildings and urban habitat, building safety enhancement guidebook, 2002. Glazing system that utilises mullion and transom sections to form a glazing support structure, or where clear glazing lines are required, glass bonded to an internal frame or utilising a fixed point. That means the freedom to design larger glazed openings while meeting the most stringent building codes for hurricane resistance. As the threat of terrorist attacks with explosive devices increases we have become much more aware of. Laminated glass interlayers laminated glass is made with two pieces of glass bonded together by an interlayer, typically polyvinyl butyral pvb. A host of government and nongovernment agencies have. The maximum displacement is a function of the ratio of applied load to yield load and duration of loading to natural period. The gpx blast system uses custom astm e119 rated, fire resistive superlite iixl glazing with one tempered and laminated lite with a minimum interlayer of 0.
The series bt601 has been engineered and tested to perform in accordance with ufc 401001 jan 07 protocols, allowing the system to be specified for dod, gsa, and private sector projects. Blast resistant ballistic glass insgulard security products. These include a european standard en for testing security glazing alone en 541. Blast resistant glazing design role of interlayer type. Blast resistant glazing with blast enhanced frames where a greater level of blast resistance is required these should be designed in accordance with the agreed threat and acceptable hazard level. Blast resistant glazing can substantially reduce injury from flying glass resulting from direct blast shock waves overpressures. Blast bomb proof bomb resistant, bomb proof, blast resistant, antiterrorist, security enhancement there is a vast range of expressions used but it all boils down to the same thing. Lacerations due to highvelocity flying glass fragments have been responsible for a significant portion of the injuries received in explosion incidents. Laminated glass has one or more bonded polymer interlayers to retain glass fragments upon fracture. The glass association of north america is a registered. Both methods address all facets of blast resistant glazing design, including attachment of the glazing to the framing members and an estimate of the forces necessary for designing framing members and connections. Government facilities that integrate blastresistant glazing include courthouses, prisons, embassies, military hospitals and federal office complexes to create welcoming, yet highly secure facilities. Army hospital features firstever fire resistive, blast. Mar 02, 2012 blast resistant glazing design is one part of a set of design strategies that are aimed at reducing injuries from flying glass.
Both methods address all facets of blastresistant glazing design, including attachment of the glazing to the framing members and an estimate of the forces necessary for designing framing members and connections. Astm f 224803, standard practice for specifying an equivalent 3second duration design loading for blast resistant glazing fabricated with laminated glass, offers guidance in the selection of laminated glass. Calculation of blast loads for application to structural. Aluminum blast resistant systems are engineered and successfully tested to withstand explosions from pressure levels of one to six pounds per square inch. Introduction to designing fenestration for blast mitigation.
Crawford international journal of protective structures 2015 6. Gpx blast system fire rated blast walls and windows. In addition to increased security concerns, government agencies and private clients are also seeking enhanced energy performance. Whether the glass is tested alone or in a system, or modeled with blast software, the final glazing configuration will be based on design input coming from the blast consultant. In each window the position and strain of the entire rear surface was calculated using the aramis image correlation software produced by gom mbh. Architectural window film blast mitigation solar gard. Army hospital features firstever fire resistive, blast rated.
Oldcastle buildingenvelope offers hurricaneresistant products that answer these problems. Simplified design procedure for blast resistant glazing. Designed as a primary protection system to prevent integrity failure of the glazing and framing support from bomb blasts. The series br7500 blast resistant concealed vent is a minimal sightline window perfect for use in blast mitigation storefront and curtain wall openings. Blast resistant glazing design 2007 finds its basis in the astm f 2248 design standard. One of the most critical parameters for blast loading computations is the distance of the detonation point from the structure of interest. The software enables the user to size rectangular laminated glass and insulating glass constructed with at least one laminated glass lite to resist userspecified explosive threats. Blast safety of the building envelope whole building design. Software for every scenario blast resistant glazing design 2007 enables the user to size rectangular laminated glass and insulating glass constructed with at least one laminated glass lite to resist userspecified explosive threats. Blast bomb proof wrightstyle steel glazing systems. Blastresistant design of structures practice periodical. Blast resistant anchor design software blast resistant window anchor design software brads is a windowsbased tool for the analysis and design of anchoring systems used in blast resistant window glazing. Kawneer does not control the selection of product configurations, operating hardware, or glazing materials, and assumes no responsibility therefor. A new kind of blastresistant curtain wall facade timothy r.
Download blast resistant standards criteria overview pdf 107kb threat assessment information. As such it is a useful design tool for optimising blast. Standard practice for specifying an equivalent 3second duration design loading for blast resistant glazing fabricated with laminated glass. This illustration shows a cross section of a test structure defining the protection levels correlated in table 1. Manufacturers of blast resistant windows with architectural information on building materials, manufacturers, specifications, bim families and cad details. The bw8200 horizontal sliding window offers that rare combination of smooth operation, durability, and toughness to meet blast mitigation requirements.
Blast mitigation information graham architectural products. Blast resistant building design with finite element analysis. Summary blast resistance of glazing materials and systems utilize laminated glass to reduce the hazards associated with an explosion. Fire resistive, blast resistant glazing saftifirst. Our inhouse engineering teams have developed an analytical process for blast design that includes the use of commercial analytical tools as well as our own proprietary software developed specifically to facilitate blast analysis. The gsa guideline for glazing system performance, the gsats012003, outlines approved methods for shock tube testing, arena testing and test modeling with software. The channelling effect of other buildings and street architecture can change the way the pressure. Blast resistant glass laminates can substantially reduce or prevent injuries caused by explosive devices. Blast resistant glass blast resistant glass is a range of glass constructions aimed at preventing and reducing injury in the event of a bomb or similar explosive attack. The dod minimum antiterrorism standards for buildings is designed to protect dod personnel from terrorist attacks. Blastresistant glazing design journal of architectural. Blast resistant dlubak specialty glass corporation. This paper discusses factors pertinent to the design of blast resistant glazing.
The ductility ratio, in a sdof system is defined as the ratio of maximum deflection, to equivalent elastic deflection, this can be determined from elastoplastic response graphs. Unfortunately we live in a world where bomb blast is a real danger to our safety and security. Can be engineered to meet all levels of blast protection depending on the project, with static and dynamic analysis using wingard software, which is standard industry. Both of these methods rely on laminated glass as the blast resistant glazing material. Also, validation testing of the design procedure must be done in actual frames connected in a realistic way to the structure. The european committee for standardization cen published the first standards for testing blast resistant glazing in 2001. The blast resistant glazing is designed to meet the secondhighest design criteria for blast resistance performance condition 2 established by the general services administration see table. Designed and installed by window contractor masonry arts, bessemer, ala. The blastresistant glazing is designed to meet the secondhighest design criteria for blast resistance performance condition 2 established by the general services administration see table.
This program is the gsa and isc standard for the analysis and design of windows subjected to blast loads. Blastresistant design is also a growing trend at airports and in the commercial and residential sectors. In the worst scenarios, the shards flying and falling from fractured window. The sg blast resistant curtain wall facade system offers a significant development in the design of blast mitigation glazing systems.
Material flexibility material ductility material strength. Like most threats it can be hard to determine the size of the explosion and the proximity to your location. Aluminum defender series bw8200 blast resistant horizontal sliding window description. Both of these methods rely on laminated glass as the blastresistant glazing material. The purpose of blast resistant glazing design when explosions occur in populated areas, air blast pressure typically fractures windows, causing catastrophic results.
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