|Cisterns & Rain Barrels|
CisternsRainwater coming off the dome can be caught in troughs and carried to your cistern. You can use the excess concrete left over when the panel seams are getting filled with concrete and make a trough around the outside edge of the slab at ground level to carry the water to the cistern.
One of American Ingenuity's clients is about to finish his cistern design for his dome to be built in Tortolla British Virgin Islands.
Rainwater can be harvested from rooftop catchments.
The following information came from their web site www.oas.org
The application of an appropriate rainwater harvesting technology can make possible the utilization of rainwater as a valuable and, in many cases, necessary water resource. Rainwater harvesting has been practiced for more than 4, 000 years, and, in most developing countries, is becoming essential owing to the temporal and spatial variability of rainfall. Rainwater harvesting is necessary in areas having significant rainfall but lacking any kind of conventional, centralized government supply system, and also in areas where good quality fresh surface water or groundwater is lacking.
Annual rainfall ranging from less than 500 to more than 1,500 mm can be found in most Latin American countries and the Caribbean. Very frequently most of the rain falls during a few months of the year, with little or no precipitation during the remaining months. There are countries in which the annual and regional distribution of rainfall also differ significantly.
For more than three centuries, rooftop catchments and cistern storage have been the basis of domestic water supply on many small islands in the Caribbean. During World War II, several airfields were also turned into catchments. Although the use of rooftop catchment systems has declined in some countries, it is estimated that more than 500 000 people in the Caribbean islands depend at least in part on such supplies. Further, large areas of some countries in Central and South America, such as Honduras, Brazil, and Paraguay, use rainwater harvesting as an important source of water supply for domestic purposes, especially in rural areas.
A rainwater harvesting system consists of three basic elements: a collection area, a conveyance system, and storage facilities. The collection area in most cases is the roof of a house or a building. The effective roof area and the material used in constructing the roof influence the efficiency of collection and the water quality.
A conveyance system usually consists of gutters or pipes that deliver rainwater falling on the rooftop to cisterns or other storage vessels. Both drainpipes and roof surfaces should be constructed of chemically inert materials such as wood, plastic, aluminum, or fiberglass, in order to avoid adverse effects on water quality.
The water ultimately is stored in a storage tank or cistern, which should also be constructed of an inert material. Reinforced concrete, fiberglass, or stainless steel are suitable materials. Storage tanks may be constructed as part of the building, or may be built as a separate unit located some distance away from the building. Figure 1 shows a schematic of a rooftop catchment system in the Dominican Republic.
All rainwater tank designs (see Figures 2a and 2b) should include as a minimum requirement:
Additional features might include:
The following questions need to be considered in areas where a rainwater cistern system project is being considered, to establish whether or not rainwater catchment warrants further investigation:
If the answer to these five questions is yes, it is a clear indication that rainwater collection might be a feasible water supply option. Further questions, however, also need to be considered:
The following information came from Aaron's Rain Barrels web site http://www.ne-design.net/
A rain barrel is a rainwater harvesting system that is connected to a down spout tube from a house or building. We make quality rain water barrels that collect, store and divert rooftop runoff during a rain shower.
An Aaron's Rain Barrels is a better designed rain barrel. We offer you our #1 selling recycled plastic barrel or a traditional whiskey barrel. Our preferred rain collection barrel connects directly to your rain gutters down spout tube, has an overflow valve and is only made from the best quality parts so they last a lifetime.
There is more to making rain barrels then just adding a spigot to a barrel. If things are not done just right your rain barrel will leak within a few weeks.