SPORT PLAYING FIELD
First Claim
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1. An engineered turf management system for managing a playing field, comprising:
- a hydroponic turf bed extending from ground level to a sub grade interface, comprised of a sand layer, a turf grass layer, with said turf grass layer at ground level and comprised of living turf growing in sand, and a gravel layer below said sand layer;
a waterproof membrane underlying said gravel layer of said hydroponic turf bed;
a water level control system comprising;
a water application system that delivers irrigation water to said sand layer via subsurface pipes, with said water application system further including a fertilizer injection station;
a water removal system for removing excess water from said turf bed; and
a water level sensor for determining the height of a water table in the hydroponic turf bed.
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Abstract
An engineered turf management system utilizing a sand layer over a gravel layer, with irrigation by sub grade application of water and nutrients. A drainage system removes excess water, and an irrigation system applies water and nutrients to the bottom of the sand layer for distribution by capillary action.
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Citations
20 Claims
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1. An engineered turf management system for managing a playing field, comprising:
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a hydroponic turf bed extending from ground level to a sub grade interface, comprised of a sand layer, a turf grass layer, with said turf grass layer at ground level and comprised of living turf growing in sand, and a gravel layer below said sand layer; a waterproof membrane underlying said gravel layer of said hydroponic turf bed; a water level control system comprising; a water application system that delivers irrigation water to said sand layer via subsurface pipes, with said water application system further including a fertilizer injection station; a water removal system for removing excess water from said turf bed; and a water level sensor for determining the height of a water table in the hydroponic turf bed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20)
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17. An engineered turf management system for managing a playing field, comprising:
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a hydroponic turf bed extending from ground level to a sub grade interface, comprised of a sand layer, a turf grass layer, with said turf grass layer at ground level and comprised of living turf growing in sand, and a gravel layer below said sand layer; a waterproof membrane underlying said gravel layer of said hydroponic turf bed; a water level control system comprising a plurality of zones in said playing field, with each zone comprising; a generally U-shaped water level tube with a first end positioned in said sand layer of said hydroponic turf bed, and a second end located in a water level control unit with said second end configured to reflect the height of a water table in said turf bed; a water level sensor for determining the height of a water table in the hydroponic turf bed by sensing the water level in said second end of said U-shaped tube; with water level sensor configured for activating one or more water filling valves at said minimum, water table level, and for deactivating said water filling mechanisms when a nominal water table level is reached, and for activating one or more water draining valves at a maximum water table level, and for deactivating said draining valves at a nominal water table level a water application system that delivers irrigation water to said sand layer via subsurface pipes, including transfer pipes connected to perforated water distribution pipes, with said water distribution pipes positioned at or below an interface between said sand and said gravel layers with said water application system further including a fertilizer injection station a water removal system which comprises one or more drain pipes connected to perforated water inlet pipes, for conducting water from said hydroponic turf bed. - View Dependent Claims (18, 19)
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Specification