【正文】 gn institute to provide the drawings, using the foundation steel (including pile steel mesh cage bars ) as the lightning protection and grounding, using column within 2main bar as lead, using concrete foundation beam reinforced bar as electrode connection, use of roof beam reinforcing steel bar and reinforced parapet coping as dark installed lightning protection lightning protection construction method:1straight buried metal pipes and metal top and lightning protection device.2into the building of buried metal pipeline, roof all the metal pipeline and its structure also and lightning protection device.3note that in the construction of grounding body ( line ) of the lap length must ply with the following provisions: to2 times its width ( and at least 3edge welding)。接地是避雷技術最重要的環(huán)節(jié)，不管是直擊雷、感應雷、或其他形式的雷，最終都是把雷電流送入大地。當該建筑物遭受雷擊時，電力系統(tǒng)的電壓和電子設備工作接地的電壓同時上升，保持了設備的工作電壓不變，使電子設備在雷擊時可正常工作。接地不好，所有防雷措施的防雷效果都不能發(fā)揮出來。 多分支單點接地：也就是第3種接地方式。 數字地和模擬地建議分開（除非你的低壓電氣設備電源電壓只有幾十伏），因為數字電路屬于正負5V、12V、24V級別的，很容易受干擾，而且一旦外部異常電壓一旦串入將很大可能性的造成設備損壞。 　　(6)接地網：由垂直和水平接地體組成的具有泄流和均壓作用的網狀接地裝置。附件有輔助探棒導線等，裝于附件袋內。軟銅線是否斷頭，螺絲連接處有無松動，線鉤的彈力是否正常，不符合要求應及時調換或修好后再使用。(8)嚴禁使用其它金屬線代替接地線。.6防雷工程施工質量通病及其對策措施屋面外露金屬管道及設備與構件未進行防雷連接、或連接不符合要求，存在雷電危害隱患。為了保證接地電阻值符合規(guī)范要求，施工后的接地電阻的測試工作就非常有必要。新的地線電阻測試原理， E為接地電極，金屬板為電流回歸路，測試由接地電極、大地、金屬板和測試線構成的閉合回路的阻抗，可推算出地線的接地電阻。其中E是接地電極，C是注入電流用的輔助電極，P是為了測試電位用的輔助電極假想的參考點。但是，現在已進入到光纖通信時代，連在通信網上的用戶終端，同時還要與交流電源線相連，在用戶終端上采用的大規(guī)模集成電路愈來愈多，這此新特點對雷電防護和接地，提出了新要求，我們必須設法去適應這些新特點。5防雷系統(tǒng)施工方法及技術措施防雷系統(tǒng)接地工程主要需與土建密切配合、柱鋼筋結構造型時即需跟進完成接地體（線），在每次完成防雷引上接地線（體）焊接后，均在引上的主筋上端涂上醒目標記，以利上一層接地線、網的焊接。 (5)要愛護接地線。在搖表上選好檔位然后以120轉/分的速度搖動搖表，邊搖搖表邊用搖表上可刻度盤調0，待指針正對搖表中心刻度0時，用檔位乘以刻度盤對應的數值得出此接地點的接地電阻。一、接地電阻測試要求： a. 交流工作接地，接地電阻不應大于4Ω； b. 安全工作接地，接地電阻不應大于4Ω； c. 直流工作接地，接地電阻應按計算機系統(tǒng)具體要求確定； d. 防雷保護地的接地電阻不應大于10Ω； e. 對于屏蔽系統(tǒng)如果采用聯合接地時，接地電阻不應大于1Ω。 　　(3)接地線：電氣設備、桿塔的接地端子與接地體或零線連接用的正常情況下不載流的金屬導體。但這種接地方式費時、費力而且單獨接地源不一定好取。這種接地方式的好處在于：節(jié)省人力、物力；而壞處在于：當公用的接地線出現斷路時，如果接地系統(tǒng)中有一臺設備漏電，就會引起其它設備的外殼上均出現電壓，對人員安全造成威脅。90年代以前，部隊的通信導航裝備以電子管器件為主，采用模擬通信方式，模擬通信對干擾特別敏感，為了抗干擾，所以都采取電源與通信接地分開的辦法。接地。 the connection between the flat width for2 times, three surface welding。 use of cathodic protection.One, ground resistance test requirements: a. AC grounding, grounding resistance should be less than4 ohm。 Current。 potential1 introductionIn recent years, many domestic and foreign standards do not advocate information equipment using independent grounding device, remend the use of mon earthing system. For example, the 2000 edition of the GB5005794 design code for protection of structures in point out clearly: every building itself should adopt mon earthing system to be the buildings within the various grounding are unified to buildings based on, or outdoor grounding device. When the building was hit by lightning, power system voltage and electrical equipment grounding voltage rises at the same time, keep the equipment working voltage constant, so that the electronic equipment from lightning strikes can work normally. Common earthing system usually use the building foundation grounding electrode, the grounding resistance less than 1 ohm in general, if the equipment grounding resistance requirement is lower, should take the minimum value.The ground that has been incorporated into the lightning protection system of lightning energy drain into the earth, good grounding downlead to effectively reduce the voltage on the back, to avoid the occurrence of. In the past some requirements of electronic equipment grounding alone, the purpose is to prevent stray current and transient current in power network disturbance of the normal work of equipment. Before 90 time, forces of the munication navigation equipment electronic tube device, using analog munication mode, analog munication on particularly sensitive to interference, interference, so will take power and munications grounding separate way. Now, the lightning protection engineering fields do not advocate a separate ground. In the IEC standards and ITU standards are not advocating a separate ground, American Standard IEEEStd11001992more sharply pointed out: not remended the use of any kind of socalled separate, independent, puter, electronic or other such incorrect ground as equipment grounding conductor of a connection point. Grounding is the most fundamental aspect of the lightning protection system. The ground is not good, all the measures of lightning protection effect can play. Lightning protection grounding is ground munication stationCode for construction and acceptance of the basic safety requirements, the grounding of PLC belongs to a lowvoltage electrical equipment of single point grounding modeLow voltage electrical equipment of single point grounding mode can be divided into: tandem type single point grounding, parallel type single point grounding, multiple branching of single point grounding.2 single point grounding methodTandem type single point grounding: or first grounding ways. Method : the number of low voltage electrical equipment grounding terminal equipment with the same root near the ground wire connecting, then through this grounding and grounding device. The grounding system is: save manpower, material resources。 b. Safety g