Preparation, Proposal, and Approval Process for the Project Proposal of Lawn Quartz Sand and Specialized Lawn Quartz Sand; Overview of the Development of the Lawn Quartz Sand Project. In light of the current market demand for lawn quartz sand materials, continuously improve the production technology level of the product. What is the laying thickness of quartz sand for artificial turf? The laying thickness of quartz sand is related to the height and density of the grass. For sports turf with a grass height of 5CM, the quartz sand height is approximately 22MM.