According to the construction site provided by the owner, the site is refined according to the design and construction drawing.
1, the terrain requires that the slope curve of the whole terrain should be kept clear of drainage. When stacking the terrain, it should be constructed from the inside out according to the lofting elevation, while molding and compacting. During the construction, the terrain skeleton should be mastered at any time, and the soil should be loosened and rolled, and the soil should be solidified. Mechanical equipment should not be constructed on the planting topsoil.
2. After the micro-topography rough shaping is completed, cover the surface layer manually to keep the surface soil loose and clean up the sundries. When leveling artificially, it will gradually gather from the edge to the middle, so that the gradient curve of the whole terrain is gentle and the drainage is smooth. The moisture content of backfill soil should be controlled at about 23%, and stones with particle size greater than 10cm are not allowed to be used. Stop working in rainy days, and trim and beat the slope in time after the rain. There is garbage, muck and construction waste on the construction site, which should be cleaned up.
3, must make the site and the surrounding roads, site elevation reasonable cohesion, make green drainage unobstructed.
4. The minimum thickness of planting soil in the planting site must meet the following requirements.
Minimum soil thickness required for planting garden plants, vegetation type soil thickness (cm) herbaceous flowers 20; 20 kinds of ground cover flowers; ? Sow 20 seeds;
5. When arranging the site, the relationship between the compactness of soil and the design elevation should be considered. After compaction, the compactness of soil should reach more than 80%, so as to avoid the uneven site caused by serious watering and sinking after planting. ?
6. Dig the site, loosen the soil, uproot weeds with hoes and shovels, and use herbicides to eliminate weeds when there are many weeds to meet the plant and design requirements.
7. If the terrain adopts mechanical layout, you should contact the construction unit or relevant units in advance to find out whether there are underground pipelines to avoid damaging the pipelines during mechanical construction.
Construction process steps of Erhuahai project
1. After receiving the design drawings, the construction personnel go to the site to check the drawings, understand the terrain and obstacles, and find the basis and method of fixed-point setting-out.
2. First, mark the outline, planting position and variety of the planting area according to the engineering layout, and set out.
3. List the planting positions of Huahai seedlings respectively. After each pay-off, report to the supervision engineer for review. After approval, proceed to the next process.
4, planting area should be trimmed to conform to the linear and slope indicated by the supervision engineer, should have a comfortable appearance. All clods, stones, hard soil and other sundries and materials unsuitable for planting shall be removed by the contractor himself. The treated topsoil and subsoil shall be separated and approved by the supervision engineer.
5, cross construction lofting damage should be repeated in time, to ensure the construction accuracy and progress.
The whole lofting process is carried out in the following ways: determination of reference point → control network lofting → lofting → verification → use → double track → use.
Thirdly, transportation and planting of flower seedlings.
1, the flower seedlings are transported to the construction site in batches according to the dosage. In principle, transport as little as possible, and plant in time after arriving at the site.
2. Take necessary measures to protect the seedlings from damage during loading and unloading.
Fourth, the construction progress plan
In the construction steps of Huahai project, the construction progress of the whole project can be monitored and adjusted at any time, which can help the project manager grasp the current progress focus and overall difficulties to the greatest extent.