Landscape greening design in Harbin Treatment methods and requirements of garden water system

1： All kinds of embedded parts shall be embedded in the water system pool according to the design requirements. Anti leakage measures shall be taken for the pipes passing through the pool wall and bottom. After the construction of the pool body is completed, water filling test shall be carried out. The closed water test method shall comply with the provisions of the current national standard Code for Construction and Acceptance of Water Supply and Drainage Structures GB50141.

2： The installation of water system pipes shall meet the following requirements:

1. The main pipe should be installed first, and then the branch pipe. The position and elevation of the pipe should meet the design requirements.

2. When the water distribution pipe network is installed horizontally, it shall have a slope of 2 ‰~5 ‰ towards the drainage point.

3. During pipe blanking, the pipe cut shall be flat and perpendicular to the pipe center.

4. The connection of pipes made of various materials shall ensure no leakage.

3： The specification of the water system submersible pump shall comply with the design regulations, and the installation shall comply with the following regulations:

1. Submersible pumps shall be connected by flanges.

2. Submersible water pumps for fountains of the same group shall be installed at the same elevation.

3. The axis of submersible pump shall be parallel or vertical to the axis of main pipe.

4. When the submergence depth of submersible pump is less than 1250px, a protective screen shall be installed at the pump suction.

5. The submersible pump cable shall be waterproof, and the control switch shall be leakage protection switch.

4： The water system fountain project shall meet the requirements for safe use, and the specifications and range of the nozzle and the artistic effect of the system shall meet the design requirements.

5： The cable immersed in water shall be 24V low-voltage underwater cable, and the underwater lamp and junction box shall meet the requirements of sealing and seepage prevention.

6： The water yield of waterfall and drop works shall meet the design requirements. The water shall form a waterfall shape, and the water shall be evenly distributed around the water outlet. The water flow shall not leak to other stacked stone parts, and shall not impact the plants in the planting trough, and shall meet the design artistic effect.

7： The nozzle installation of water system fountain shall meet the following requirements:

1. The nozzle can be installed only after the pipe network is installed and pressure test is qualified and washed.

2. A straight pipe section with a length not less than 10 times the nominal size of the nozzle or a rectifier device shall be provided in front of the nozzle.

3. Determine the reasonable distance between the sprinkler and the edge of the pool, and the splashed water shall not splash on the ground outside the pool or within the water collection line.

4. The installation form of nozzles for fountains in the same group should be the same.

5. There should be no obstacles on the flow path of the concealed sprinkler in the outlet direction.