Landscape greening design in Harbin Construction process:

1. Positioning and setting out:

After mobilization, the construction positioning drawing shall be reviewed on the drawing first. Secondly, the site coordinate points and benchmarks shall be handed over for acceptance. If the error is found to be too large, the handling method shall be jointly discussed, and the formal positioning can be carried out after confirmation.

Establish control coordinate network and benchmark on site. The bench mark is introduced from the bench mark, and protective measures shall be taken for the bench mark to ensure that the setting out, excavation and filling, foundation tamping, crushed stone (concrete) cushion surface pavement, site cleaning and maintenance of the bench mark will not be damaged.

2. Establish horizontal control network and vertical control network

The building grid shall be designed on the general layout after the site leveling is completed. The design principles are as follows:

The main axis of the grid shall be the centerline of the site area as far as possible. The end points of its vertical and horizontal axes should be extended to the edge of the site as far as possible, which can not only expand the grid but also ensure uniform accuracy.

The side length of the square grid should not be too long, generally less than 100 m. In order to facilitate calculation and memory, it is advisable to take a multiple of 10 m.

The axis control pile shall be projected on the edge of the grid as far as possible.

After the survey of the grid is completed, the accuracy of the grid is tested by positioning all buildings at one time, which is a good test method for the grid without adjustment. The setting out method of building grid is to set out the main axis first, then densify the grid, and adjust according to the traverse survey.

The elevation control network is the basic basis for the elevation survey and transmission of upper and underground buildings (structures) in the construction site area. The density of vertical control network points shall be appropriate. Leveling survey method can be adopted for the project.

When the length and width of the site area are more than 100 m, more than 4 elevation starting points can be arranged in the site area to form a closed leveling line with known elevation points for surveying.

Landscaping works mainly include:

Balance and arrangement of garden earthwork, garden civil construction, garden decoration construction, carpentry, steel structure, small landscape buildings, planting of large and small trees, shrubs, flowers, and greening maintenance works.

Construction procedure of garden works:

Surveying, positioning and setting out → earthwork excavation and transportation → block stone cushion → fine stone concrete leveling → concrete foundation pouring → surface layer pavement → earthwork backfilling → finished product curing.