Basic guidelines earthwork excavation street lamp solar street lamps controller

Earthwork excavation street lamp base wi 1. Earthwork excavation 1) In combination with field construction environment, we consider earthwork excavation plan used construction machinery with artificial trimming excavation earthwork. 2) The buried depth of engineering foundation in construction drawings ( Including the cushion layer) , considering the soil

earthwork excavation street lamp base wi

1. 1 earthwork excavation

1) In combination with field construction environment, our company will consider using earthwork excavation plan of construction machinery, earth excavation using artificial nap.

2) This project see embedded depth of foundation construction drawing ( Including the cushion layer) 。 Considering the soil, earth excavation using slope ratio 1:0. Method of 33, with more than 30 cm between foundation and slope of working face. In the process of mining, sand bags should be appropriate for retaining pile and pile up, in order to prevent the loose soil dump inward.

3) To prevent surface water and rain water flows into the base groove, groove top surface drainage should be set up, away from the slope shoulder line. Drain slope of not less than 1. 5%, 50 m set a sump. At the bottom of the groove on the surface is 300 mm from the slope foot also set drainage and sump, through the water pump will drain and sump pit.

4) Base trough earthwork should follow the principle of moving from far and near to export more.

1。 2 earthwork backfilling

1) Backfill soil containing no organic impurities, moisture content should be accordance with the requirements of the compaction. If the soil is not in conformity with the requirements, should consider to use stone chips backfill.

2) Thickness of backfill soil should be controlled in less than 30 cm. Vibration tamping machine is used for the street lamp foundation construction. Before backfill, measurement should be made for leveling points to drain the water in the foundation pit.

3) Backfill construction must work closely with underground pipeline construction, avoid duplication of excavation.

4) Filling construction is not suitable for a rainy day. Filling surface should be in a certain slope compaction drainage. Foundation pit backfill should prevent the lateral pressure, buildings or facilities should be damaged due to unbalanced.

1。 3 safety and quality assurance measures

1) Confirm & plusmn0. 000 the following work has been completed and concealment acceptance process has been completed.

2) Confirm the placeholder of underground pipeline embed or correct.

3) Clean up the sundry, drain pit water.

4) To do a good job of lofting level elevation.

5) Conscientiously implement the construction site temporary electricity safety technical specification, construction machinery trouble-free check again after the construction.