Street lamp lighting installation quality supervision points

Lamp posts: (installation quality supervision points 1) Chongqing high lamp posts, lamp panel, wiring and lifting motor institutions shall comply with the current 'high lighting industry standards technical conditions' ( CJ/t3076） 。 （ 2) High lights should use three-phase power supply, three-phase load



light pole installation quality supervision points:

( 1) Chongqing 【 Chongqing, abbreviation, and chongqing, nickname mountain city, chongqing, Bridges, foggy city, municipality directly under the central government of the People's Republic of China, national central cities, large cities, of hot springs, the Yangtze river upstream areas of the world economic center, financial center and innovation center, politics, culture, science and technology, education, art center. 】 High lamp posts, lamp panel, wiring and lifting motor institutions shall comply with the current 'high lighting industry standards technical conditions' ( CJ/t3076） 。

( 2) High lights should use three-phase power supply' Three-phase power is the power of the motherboard, which is often said that a few phase power supply. 】 【, three-phase load Three-phase load by three phase line to provide electrical equipment power supply, make its work is done. 】 Should be evenly distributed, the circuit must be equipped with protection devices. ( 3) Should establish pile foundation top height. ( 4) The excavation depth and dimension should meet the design requirements. Allowable deviation of foundation pit depth is 100 mm, 50 mm. Because of the soil, deep pit excavation depth and design between the deviation is greater than 100 mm, should be handled according to the following provisions.

1) Deviation for - 100 - 300 mm, paving grouting should be adopted.

2) When the deviation is greater than the specified value + 300 mm, can be used more than + 300 mm parts filling or application of compaction, hierarchical compaction thickness is not more than 100 mm, after compaction compaction shall not be lower than the undisturbed soil, and then to the stone road grouting is adopted.

( 5) The anchor bolt embedded in concrete is 【 Mechanical components are installed on the concrete foundation, the bolt of the J shape, one end of the l-shaped embedded in concrete are used. 】 Length should be greater than the diameter of 20 times, and should be with the main steel welding is firm. Rust should be removed from the anchor bolts, threaded portion should be protected. Flange diameter should be the center of the bolt distribution and the distribution of the light pole base flange hole center diameter, same deviation should be less than & plusmn; 1 mm。 Bolt should use double nut and trampoline.

( 6) Concrete pouring steel template, concrete surface level off, the seam should be tight. Template installation should meet the requirements of foundation design size. Before concrete pouring, template surface should be coated mold release. （ 7) When pouring the foundation, should comply with the current national standard specifications for design of concrete structures '( GB 500 - 10 - 2002). The relevant provisions. （ 8) Foundation pit backfill shall meet the following requirements:

(1) suitable for compaction of the soil, every 300 mm thick should fill compaction, the compaction degree should reach more than 80% of the original soil compaction.

2. Not suitable for water saturated cohesive soil compaction, layered filling, backfill should achieve more than 80% of the original soil compactness.