www.188金宝搏ios官方app下载www.bussiapp.com

[B.V.Harsoda]

哈利法塔,闪电Prevantion系统
链接:
http://burj-khalifa.eu/tourist-attractions/unique-sensor-system-deflects-lightning-from-burj-khalifa

http://gulfnews.com/business/general/unique -传感器-系统-偏转闪电- - burj khalifa - 1.580777

问候,
Er。b . v . Harsoda

[B.V.Harsoda]

雷电防护研究所

防雷协会是一个非营利组织,致力于确保今天的防雷系统质量最好的�在设计、材料和安装�可以免受这宝贵的生命和财产带来的损害和昂贵的一个自然的最令人兴奋的现象:闪电。

链接:
http://www.lightning.org/?page=home



关于防雷有趣FAQ从上面链接:

我有一个扶手,六层楼的四周。扶手栏杆上方1�4”。铁路的顶部是6“宽,3/4”厚的扁铁。我可以用它来防雷吗?我能添加短杆点的顶端铁路?


NFPA 780允许使用金属3/16”厚作为罢工终止设备和电缆导体在防雷系统的替代品。3/16“厚金属不会消耗闪电高度时,它有足够的空闲可用电子路线闪电接地系统。你的扶手,哪些项目在至少10“空气终端,将保护整个周长这周围没有添加终端和一个电路。这可能不足以保护整个mid-roof区域,因为开放区域超过50英尺50英尺可能需要额外的保护。空调单位或者其他屋顶安装机构可能扩展到一个高度,需要他们的保护或互连系统。你的扶手可能连续与附近建筑钢结构,扩展了系统级防雷接地系统可以添加的,或如果这是灌浇混凝土结构可能需要延长天线馈线电缆从扶手到接地系统。当然,结合其他建筑接地系统的防雷系统和浪涌抑制输入能量线是一个完整的保护要求。请参考我们的成员公司之一,一个完整的设计和定价信息。



架构师需要考虑雷电安全当设计一个结构?

是否需要在建筑标准取决于有管辖权的地方当局的要求。在许多情况下,这是一个实体如市、县政府和它完全依赖于代码或标准,身体所采用。没有“国家”法律要求防雷。有一些州法律对特殊类型的入住率——例如,佛罗里达需要防雷在卫生保健设施。全国防火协会。NFPA出版标准的安装防雷系统# 780可以采用任何管辖权就像任何其他代码或标准的练习。美国国家电气规程(NEC或NFPA # 70)和生命安全代码(NFPA # 100)发布的几个比较知名的文档NFPA连同上百消防安全领域的其他文件。这些是必需的,除非他们权威采用了一些专门为当地法律。NFPA 780年防雷文档是一个独立的文档,不需要其他建筑规范,但留给地方选择。这并不意味着这些代码的工作知识和标准并不是一个好主意如果你是一个专业。 Architects have a code of ethics just like any other professional which should require them to make clients aware of any product, service or system that may be to their benefit. In many cases an architectural firm may have a list of various items to review with prospective clients early on in the planning stage of a project. Based on this type consultation any system not covered automatically by law may be valued in or out of a project to the satisfaction of the customer. In areas of the country subject to high lightning activity, or in construction occupancies where evacuation is difficult, lightning protection would be an important consideration on any project.



国家电气代码(NEC)怎么说雷电对建筑物的保护呢?所需的只是某些类型的设施吗?

美国国家电气规程NFPA文档# 70,防雷标准NFPA # 780。这些是单独的文档可供采用的“地方当局有管辖权”地区的建筑工程。在很多地方NFPA 70 (NEC)被采用,但# 780不是——它是一种选择。NEC不需要防雷,尽管它引用780年的几个部分。协调委员会负责保持文件之间存在一般更新。NEC引用这一事实电动服务应当有一个接地和防雷系统应当有独立的理由。NEC引用的事实,当有780防雷系统理由应当与电气互连。NEC地址飙升抑制作为一个选项,但措辞添加澄清,当780年防雷系统安装,增兵是标准要求。地面终端设备等项目文档之间的协调,因此,同样的产品中使用类似的土壤类型。我们将假定由于雷电风险评估是通过附件L的# 780文档,还有位置没有多少闪电活动,很难要求防雷无处不在,甚至在特定结构在NEC这样的文档。 This would make the NEC document not as useful in certain areas.

防雷所需金属看台位于一个高中足球体育场吗?有大小高照明标准,三个球场的每一边80的高。有一个新闻框一套看台,上面是+ / - 33以上年级完成。

他是否防雷“required”与否取决于当地的选项。防雷标准是一种建筑规范,并将采用“地方当局有管辖权”。Since lightning protection is a separate Standard, not a part of the Life Safety Code or the National Electrical Code, it would have to be specifically identified, and in most jurisdictions it is not. It is the reference source if someone chooses the option of providing lightning protection for a structure. In the case of metallic bleachers, it is normally appropriate if you choose protection to provide lightning attachment points above and around the bleachers, and then ground the bleachers. Zones of protection are defined in the Standards based on a 150 ft. radius sphere model. For example, when you place a 150 ft. radius arc tangent with the top of a protected light standard, and tangent with the ground - the area under the arc is considered protected from lightning strikes. Any area breaking this arc is still subject to a direct strike. Therefore, it makes a difference what the relative heights of objects, their proximity, and their total extension away from a protected body may be. You may find that by protecting the light standards and the press box, you have created a protected zone inclusive of the bleachers. Or, you may need to add additional protected light standards (or equivalent protected masts) to provide full protection. There are stadiums with seating areas so extensive that it becomes impossible to provide protection from this "mast-style" configuration. In those instances, an overhead ground conductor, similar to the protection provided over power transmission lines, run between the masts over the bleacher area may provide a more inclusive protected area. Obviously this is something that needs to be reviewed and designed to meet the site conditions. We do not have that engineering capability in this office. You may wish to contact one of our member companies for a design and price structure on the necessary system components for protection. Please click here to search for installers by state.

问候,
b . V.Harsoda

[B.V.Harsoda]

关于卡被闪电击中更有用的链接:-

http://www.struckbylightning.org/

问候,
b . v . Harsoda