1. The density of compacted soil layer should be at least 85%. 2. The thickness of the compacted gravel layer should be about 350mm. Spread and make it flat, laminate until it becomes dense. 3. Lay a 70mm thick layer of small gravel (20% soil, 20% sand and 60% small gravel mix) as a leveling layer. 4. Lay grass lattice, you can also use saw to cut the grass lattice into a suitable shape, leaving a little mm between the lattice. 5. After the grass lattice is laid, if necessary, use fixing nails to further strengthen the grass lattice. 6. Fill the grass grid with planting soil , start from one centimeter of the upper mouth, sow the grass seed, and then sprinkle a thin layer of soil. 7. When laying sod, fill the grass grid with planting soil first, and make the surface flat with scraping straightedge. Lay sod, leaving about 2cm gap staggered paving. Water until floating slurry, use small roller or plate vibrator to repeatedly press the turf into grass grid 8. The parking space can be m