Garden knowledge is urgent. . . Please help.

1. In the vertical design of garden land, in the north, for safety reasons, the longitudinal slope of the square should be small 1%, the transverse slope should not be greater than 0.3%, and the maximum slope of the parking lot should be less than 1%, and the direction perpendicular to the passage should be 3%. Generally, the slope of the garden road should not exceed 8%. If this value is exceeded, steps should be set.

2. Buried depth of trench pipe The pipe top must have a certain buried depth of covering soil, which is 0.7-0.8m； under the roadway; 0.4-0.6m； under the sidewalk; The green belt depends on the specific situation.

3. The tread height of the steps should be between 10 and 15 cm, and the long steps should be around 12cm. The tread width of the steps shall be not less than 30cm, and the step sequence shall be between 10 and 12, with the maximum of 15.

4. The revetment in the garden consists of four parts: foundation, wall, roof and surface.

5. Pools are widely used in urban gardens to beautify the city, with emphasis on decorating the environment. The design of the swimming pool includes

Four parts design: bottom, wall, entrance and exit, waterproof method.

6. Our common indoor waterfalls are: water curtain, water curtain, overlapping water and spraying.

7. The size of the longitudinal slope of the road has a great influence on sightseeing activities. Generally speaking, keep a certain garden.

The longitudinal slope of the road is beneficial to road drainage and enriches the road landscape. In order to smooth drainage, the minimum longitudinal slope should be ensured.

Not less than 0.5%, the slope should not be too large, which is not conducive to tourists' sightseeing and vehicle traffic, and is suitable for traffic.

Control within 8%, while the longitudinal slope of park roads and bicycles should be within 0.2%, the largest.

Not more than 3.0%, wheelchair and tricycle should be 0.3%, not more than 2.5%. Be locked up

If the slope is above 18%, the maximum longitudinal slope of the pedestrian sightseeing lane of the vehicle shall not exceed 8.0%.

Must be designed as a ladder road.

(Note: Questions 4, 5 and 6 are inaccurate. For the rest, please refer to the Code for Vertical Planning of Urban Land.

Code for Design of Parks and Code for Planning and Design of Urban Residential Areas)