sports grass-based field measurement of the flatness of the slope

the basis of requirements for sports grass

1, sports grass-based field measurement of the flatness of the slope. Sports grass straight curved boundaries baseline, straight along the horizontal and vertical 3m standard one point, the curve reference point to the center, with a theodolite do every 5 degrees Actinobacillus every three meters marked a point, the 3m straight put in feet between any two adjacent with a feeler the local maximum depression of no more than 3 mm for qualified,> 3 mm as unqualified point, audience measurement point pass rate of 85% for qualified,> 94% of benign , ≥ 95% as excellent. Control the elevation of the reference point (relative) elevation of each on the axis of the water level detection whether IAAF Manual requirements, sports grass transverse slope shall not be greater than 1%, and the longitudinal slope of not greater than 0.1%.

2, the cement foundation strength of structural concrete above the C20 intensity sports the grass concrete foundation of thickness recommended 8 cm -10 cm thick, not the surface of the concrete cast cement concrete the spilled cement gray closing light, vibration received light puree on ;