Playground construction

Details Playground construction Playground construction

1986-05-27

1987-07-14

Raduazo, Henry E.

Hydraulic and earth engineering

Drainage or irrigation

521695, 52742, 47 1R, 272 3, 405 45, E02B 1300

Patent

active

046799630

ABSTRACT:
A playground construction comprises an earthen floor beneath the surface of the earth, a trough extending downwardly beneath the floor and having drainage means therein. The floor and trough are lined with a water pervious fabric and an aggregate of drainage stone is utilized to fill the trough and to cover an area of the floor. The fabric material has overlapping edges which are secured together thus providing an envelope for the aggregate stone. A second layer of aggregate wood fiber is placed above the enveloped stone aggregate and terminates at the surface of the earth.

REFERENCES:
patent: 3083542 (1963-04-01), Summers
patent: 4296884 (1981-10-01), Luebke
patent: 4366846 (1983-01-01), Curati
patent: 4538387 (1985-09-01), Barnett
patent: 4624604 (1986-11-01), Wagner

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