artificial lawn laying small knowledge

For artificial lawn is more and more widely useful? Artificial lawn looks bright green seasons, lively, good drainage performance, long life, low maintenance costs. artificial lawn motion systems mainly based on quality requirements in three areas: hardness, flatness and drainage slope.
   
Artificial lawn base three categories: asphalt base, cement foundation, gravel base, Which type of the decision by the local climate and environment and budget time use, particularly suitable for large temperature difference between the north and low winter temperatures, climate and environment, also because it is expensive, for a warm and humid environment is not the most suitable foundation type, gravel foundation because of its simple construction, low cost, rapid drainage, more common in the South, but because of its rigidity and stability, long easy to use foundation loose, resulting in an uneven foundation; therefore, the underlying type of artificial grass in most regions of the domestic cement concrete foundation became economic cost is very high. On the basis of surface flatness requirements, to ensure that the artificial turf surface layer thickness and uniform elastic. Flatness pass rate above 95%, and 5 m ruler error 3MM, slope: horizontal 8 ‰, vertical 5 ‰, the semicircle area 5 ‰, the surface should be flat, smooth, to ensure drainage. The foundation should have a certain strength and stability. Surface is uniformly solid, no cracks, no bad side pockmarked face, seams straight and smooth, about 6000mm × 6000mm cuts as well. Cushion compaction, density of greater than 95%, after the pressure of the medium-sized rolling machine, no significant round track, no surface dust loose waves and other phenomena. Cement foundation necessary aquifuge, the new PVC aquifuge thickened impermeable film, the junction should be greater than 300mm edge margin greater than 150mm. Need to consider leaving the expansion joints, width of 5 mm. The basis of the maintenance period of 2-3 weeks. Best week maintenance time, which can effectively increase the lawn's appearance and its life.