Level sports grass control methods

Level sports grass control methods

Level control method
       Will be handed over to the construction unit construction side of the grade level standard point point, arranged in the area near the site as a whole sports grass project level basis, taking fourth level of lead measured elevation cross sections to the construction within a more appropriate sides and medians where the level of the fixed point set point level II. Requires that the points on both sides of fabric line, two phases of not more than 100 meters is appropriate to set the elevation of the pile. When the measurement is carried out to the construction, the nearest point of the use of Class II, thus greatly improving the work efficiency and ensure the accuracy of measurement results.
Control Plane
       a. reviewing the transfer of control point is wrong.
       b. using the control point release center line of the construction control points.
       Earthwork excavation
       Respond venues compaction, when backfill backfill soil must meet the requirements, shall not contain impurities, organics. No backfill compaction roller can be directly used, construction methods and quality control can be carried out with reference to backfill compaction.
       1, square stratified filling, the thickness of each layer of loose laying with compaction machinery and methods vary, with vibrating roller compacted. Each layer of backfill density meet the requirements only after a layer of earth backfill.
       2, when the earthwork should cross the full width of filling up layer by layer into horizontal layers, each layer of filling, rolling 5  7 times, to achieve the required degree of compaction, and then fill in the floor.
       3, earth filling segment, as in the two junction is not filling the same time, first fill slope of the lot shall be 1,1 to stay level, if the two simultaneously filling should overlap each tower access whose lap length shall not be less than 2M. Finished surface should be smooth daily compaction, improve drainage measures, do not water.
       4, in the construction of prime soil compaction, attention should stay out of the site is not embedded rainwater pipes compacted, so as not to increase the workload of the pipe trench excavation.
       5, the base with heavy soil compaction standard hierarchical compaction test subject was measured, each degree of compaction shall comply with regulatory requirements.
       6, should be maintained during the construction site is always in good drainage condition and dig temporary sump to ensure that no water and from the construction site erosion damage, temporary drainage facility requirements combined with permanent facilities, taking care not affect the environment and other facilities.
       7, the filling process may not have boiling spring, peeling, waves and water and so on. Rainy season, the venue at 2 ‰ slope grading, drainage and prepare the surface layer, as far as possible will be done before rain ripper paving compaction is completed, otherwise it can return to work should be to restore moisture standard construction rolling.
       Earth backfill compaction phase, preferably in advance with the meteorological department to learn about recent changes in the weather conditions, do not touch the rainy day. Excavation control of both the excavation depth, non-super-dig and set elevation and slope excavation is completed using a vibrating roller compacted. If boiling phenomena, must all excavation mud, with the corner stone backfill. Overbreak strictly prohibited, and in the construction process to keep track of the depth, to find a good runway transverse slope and ditch drainage slope. Excavation of Yuni, side stone dump truck Sinotrans. RCC when lifted up from the lower rolling, rolling wheel tracks overlapping 20-30cm, with the pressure with a roller with watering can not afford at this stage until the waves rolling surface without wheel tracks so far.