To provide a water feed structure for the ground surface layer capable of always maintaining the surface layer of the ground in an appropriate moistened state.
An artificial lawn 26 is laid on the lower layer ground 8 of the ground 1, and this is a water feed structure for feeding water to the surface layer 20 of the ground 1 spreading a fine particle member 28 such as sand on the base material 22 of the artificial lawn 26 to maintain in a moistened state. A sheet-like member such as nonwoven fabric 24 having rich water permeability is provided on the upper face of the base material 22 of the artificial lawn 26, a plurality of water feed means permeably feeding water to the sheet- like member on the proper places of the ground 1, and while diffusing water fed by the water feed means on the whole surface of the ground 1 through the sheet-like member, the fine particle member 28 such as sand is impregnated with water to moisten the ground surface layer 20.
AKAGAWA HIROYUKI
OSHIMA TAKESHI
OBAYASHI ROAD CORP
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