By Cora Sayre | Project Leader
Dear Friends,
Greetings of Peace. We are happy to inform you that this reporting period we are able to construct our first rainwater harvester in Villahermosa, Polanco, Zamboanga del Norte. The water coming from this tank will serve 35 families living near the area where the tank is constructed.
Our choice of ferro-cement tanks is that these favour the use of closely-spaced mortar and small diameter tie wire reinforcement. The traditional gravelled concrete will not be effective because it has less bonding area and will crack easily. The cost of ferro-cement tanks is also lesser compared to conventional concrete.
Constructing the rainwater harvesters begin with the making of a re-usable iron mould made of iron rebars welded together and sectioned into 8 sections. When the sections are joined they form a jar. This is plastered with two coats grade A concrete after the base also of concrete is prepared. Then vertical tie wire reinforcements closely spaced together is placed around the jar after which this is again plastered with mortar. Then horizontal tie wire reinforcement is placed and this is designed to resist water pressure when the tanks are in use. After 3 more mortar plastering a lip mold is set atop the tank serving as manhole tank cover. When all is done, the molds are de-sectioned and taken out one by one.
Again thank you very much for your kind assistance.
Very sincerely yours,
Cora Sayre
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