Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Reexamination Certificate
2008-05-13
2010-02-16
Singh, Sunil (Department: 3672)
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
C405S052000, C052S169500
Reexamination Certificate
active
07661904
ABSTRACT:
Rainwater collected from roof gutters is poured into the vertical portion of an “ell” shaped perforated drainage pipe. The horizontal leaching pipe portion of the drainage pipe discharges the rainwater into a catch basin. Water from the catch basin flows into another perforated leaching pipe that is set in the bottom of a trench. In turn, the lower part of the trench is filled with crushed rock to a height of about three quarters of the trench depth. A water impermeable barrier of asphalt shingles or thirty pound asphalt roofing felt is placed over the top of the crushed rock and the balance of the trench is filled with soil up to the ground level.
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Dutkiewicz Edward
Singh Sunil
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