利用基礎鋼筋做接地極施工工藝流程框圖.doc

將檢驗項目：
1、熟悉圖紙，找出圖紙所示的各個避雷接地的接地體的位置，需要焊接的部位等；
2、在土建施工無防水要求的基礎或深基礎時，根據圖紙和設計的要求部位，彈線定位所需要焊接鋼筋的位置；
3、根據圖紙要求，將底板筋搭接焊好，鋼筋的搭接尺寸應不小于直徑的6倍。且應雙面施焊，焊接牢固，并應清除焊渣。
4、在將主筋與底板筋進行搭接焊，檢查不應有漏焊，且主筋的根數不少于2根，并在地面以下焊接接地連接板，并應及時清理焊渣。
5、在回填土完畢后，應測試接地電阻，若不滿足，可從接地連接板做人工接地體，達到滿足設計要求為止。
6、避雷帶施工：避雷卡子的間距應控制在1m，且應生根于女兒墻的圈梁，避雷帶的搭接焊，應在鍍鋅圓鋼的6倍以上（即100mm左右），在陰陽角等部位應做成圓弧狀，避雷帶應與屋頂所有鐵質器件可靠連接，保證接地連續性，最后將引下線（不少于2根主筋）分別與避雷帶可靠焊接。

The test items:
1, familiar with the drawings, as shown in the drawings to identify the various lightning grounding of grounding position, need to weld the parts, etc.;
2, no water required in the civil construction of deep foundation or basis, in accordance with the requirements of design drawings and parts, playing the line needed to locate the location of welded steel;
3, according to drawings, the bottom bar lap weld, lap steel bar size shall be not less than 6 times the diameter. And facilities should be double-sided welding, welding firm, and should remove welding slag.
4, longitudinal bars and floor in the bar for lap welding, welding inspection should not be tainted, and the root of the number of longitudinal bars of not less than two, and welding in the ground below ground interconnect, and should promptly clean up welding slag.
5, in the backfill has been completed, ground resistance should be tested, if met, can be done manually from the ground interconnect grounding, to meet the design requirement.
6, with construction of lightning: lightning fastener spacing should be controlled at 1m, and should be rooted in the parapet of the ring beam, lightning with the lap welding, galvanized round steel should be more than 6 times (that is 100mm or so), the Yin and Yang angle were to be made arc-shaped, with lightning all the iron roof of the device should be reliable connection, to ensure ground continuity, and finally deflectors (not less than two longitudinal bars) were reliable and lightning with welding.

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