In order to have the most practical RH scheme for you, the following factors need to be considered;
1. Define the category of premise
The premise can be categorised base on where the scheme intended to be located. The followings are typical category of premise that you can choose;
a. Residence up to 2 storey
b. Commercial up to 2 storey
c. Residence – multi-storey
d. Commercial – multi-storey
e. Public amenities
2. Define the main objective of having the RH system (eg. Saving water bills for home, business or workplace)
You must have a clear objective for having the RH scheme.
Objectives of the scheme normally differs base on specific scenario. Each of the above type of premise serve different category of rainwater usage, pattern and volume. Thus it will only able to fulfil very specific type of objectives for each category.
Suggested objectives for residences, commercial and public applications;
a. To have alternative water for non-consuming usage
b. To reduce water bills
c. Public awareness campaign
d. Saving community funds
3. Define the type of rainwater usage
a. Household ( car wash, gardens etc)
b. Commercial (car wash, industrial wash etc)
c. Public (amenities cleaning etc)
4. Define weekly estimated volume of rainwater usage
a. Low ( below 100 litres per week)
b. Medium ( 100 to 500 litres per week)
c. High ( more than 500 litres per week)
5. Define the averaged raining day per week at the locality
a. Low ( less than 1 day per week)
b. Medium ( 1-2 days per week)
c. High ( more than 3 days per week)
6. Locate the nearest hardware stores and check range of products offered, you should look for the followings;
a. Water storage tanks (heavy duty poly tank suitable for your volume estimated) or
b. Permanent reinforced concrete tank suitable to ground storage
c. Piping materials suitable to your location
d. Prefabricated elevated storage support system suitable to your tank type
7. Define the handyman for the assembling work, the following criteria are required;
a. Able to use spanner and wrenches
b. Able to perform minimum pipe fitting work suitable to your piping system selected
c. Able to erect tank support structure suitable to your tank system selected
8. Set your budget range, the following consideration shall be taken;
a. Simplest and cheapest for very basic objectives
b. Medium range with reasonable ecstatic appearance
c. High range with exclusive ecstatic appearance
The above budget category needed to be suited to the volume of usage category
a. Low ( below 100 litres per week)
b. Medium ( 100 to 500 litres per week)
c. High ( more than 500 litres per week)
9. Locate suitable storage area and piping route at your premise
The following criteria are required for the selection of storage area base on the volume of usage category;
a. Low ( below 100 litres per week) – typically this require less than 1.5 sq meter clearance with nominal support requirement
b. Medium ( 100 to 500 litres per week) - typically this require between 2 sq meter to 3 sq meter
c. High ( more than 500 litres per week) – typically this require 3.5 sq meter to 5 sq meter
The route for piping would typically require clearance of min 1 ft height along the chosen route for proper support and bracing. The piping route will also vary base on the type of piping selected. The following type of piping can be chosen base on your preference and suitability to the intended application;
a. Poly plastic pipe – this pipe is normally sold in rolls thus it is more suitable for underground use or to encased into concrete or plaster
b. PVC pipe – this pipe is normally sold in lengths and suitable for indoor or whether proof environment
c. Galvanised iron pipe – this pipe is also sold in length and is heavier, suitable for both indoor and outdoor but will require more support and bracing
d. Stainless steel pipe – this pipe is suitable for ecstatic appearance and lighter in weight, thus require less support and bracing.
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