The wheel pressure of a car is 100 tons/m2. Parking on a common grassland will sink the ground. At the same time, the entrance and exit of the car will rub grass roots. To solve this problem, two methods can be used: 1) laying grass bricks; 2) laying grass grids.
The first is to use the cracks or holes of grass-planting bricks as grass-planting space. Its concrete structure is as follows:
According to the parking load, the crushed stone is used to make 20 cm~30 cm supporting layer on the original soil surface. Grass bricks are laid with 2-3 cm sand. Then, according to the size of the bricks, 2-4 cm of cracks are left. Finally, planting soil is placed in the cracks or holes of bricks, sprinkled with grass seeds or planted directly.
The cost of this method is low, but there are many shortcomings, such as:
To be continue……
Tomorrow we will introduce the advantages of grass grid.