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Comparing flat and dome shaped drain covers.Featured science projectScience project video

Abstract

This science fair project was done to compare the performance of a flat drain cover and a dome shaped drain cover. The tests were conducted using leaves, grass, soil and plastic wrappers.

Hypothesis

The dome shaped drain cover will be less likely to become clogged by debris.
 

Scientific Terms

drain hole, storm drains

Background

Drain hole cover

During heavy rain, water accumulates on the surface of roofs, roads and turfs. All this water needs to be channeled into proper drains in order for the water to find its way into the larger drainage system. If this is not achieved quickly or the passage for water to escape is blocked, water will accumulate and floods result.

During heavy rains, when the water levels rise, water flows into drain holes and fill up the larger storm drains underneath. However, flowing rain water carries with it, debris such as dried leaves, grass, paper, plastic wrappers into these very same drain holes. Drain hole covers are used to prevent debris from entering the holes and causing blockages. These drain holes trap larger debris, while allowing water to flow through gaps or holes into the storm drains. These covers need to be cleared regularly otherwise, eventually the surface of the drain hole covers will be completed blocked by debris.

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Complexity level:
6
Project cost ($):
30
Time required:
1 day to prepare, 1 hour for experiment
Material availability:
May be obtained from a hardware store
Safety concerns:

None