The removal of any surface water from sports areas by means of a drainage system is vital.
Surface Drainage
GENERAL REMARKS
The removal of any surface water from sports areas by means of a drainage system is vital.
Surface water mainly accumulates from precipitation,such as rain,mistdew and snow. In rare cases which are mostly attributable to planning error,surface water may also be derived from extraneous sources originating from surface or ground and stratum water, which develops from outside areas and has a hydraulic slope to the sports area. In this case, special measures have to be considered.
the surface water which has to be removed. accumulates not only on the sports surface, but also in the spectator areas, adjacent traffic areas and on other neighbouring sports surfaces and ancillaryareas
Surface Water Drainage Systems Running Track
Figure 3.3.2.3a shows the slope and the direction of drainage from the outer edge of the track to the drainage qutters on the inside.
Segment
The discharge of the surface water from the seaments to the inside of the track can be seen in Figure 3.3.2.3b.In this fiqure, a, b, and c refer to the qutter types described in Section 3.3.2.1.Gutter type b is used when there is a synthetic surface on the adjoining part of the segment.
Water Jump
Figure 3.3.2.3c shows the connection of the water jump to the drainage system. The outlet made of cast iron or plastic pipe(diameter 100mm) is controlled by a slide valve.
Landing Areas for Long and Triple Jump
The drain situated in the middle of the landing area receives,via the drainage layer beneath, the surface water from the surrounding grid(Figure 3.3.2.3d).
Landing Areas for Field Events
