Guides to choosing and installing GRP tanks
How many litres you need, how to bury a tank, GRP versus plastic, the warranty, and tank care.
Tank sizing guide
The method, a table and examples for villas, buildings, mosques and rest houses.
Underground installation
Pit, sand bed, backfill and slab, step by step.
GRP vs plastic
Heat, sun, burial and warranty, compared plainly.
Warranty
25 years against manufacturing defects, and how to keep it.
Tank care
Cleaning, algae prevention, and checking covers and vents.
Septic tank rules
The Saudi Private Sewage Code figures, in plain words.
Sizes and dimensions
Diameters, lengths and heights for horizontal and vertical tanks.
Which guide to read first
The seven guides are written for the person buying the tank and the contractor installing it. Before asking for a quote, read the sizing guide and the size tables. Before excavation, give your contractor the underground installation guide. Once the tank is in place, keep the care guide and the warranty guide within reach.
Seven guides, one question each
| Guide | The question it answers |
|---|---|
| Tank sizing guide | How many litres does a villa, building, mosque or rest house need? |
| Sizes and dimensions | What diameter and length or height goes with each capacity? |
| Underground installation | How is a tank buried, step by step, and who does which job? |
| GRP vs plastic | Which material suits my use, and when is plastic enough? |
| Warranty | What does the 25-year warranty cover, and what voids it? |
| Tank care | How do I clean the tank, and how often? |
| Septic tank rules | What does the Saudi Private Sewage Code require of a septic tank? |
Where the figures come from
The burial steps are the conditions in the installation guide sent with the quotation. The septic figures come from the Saudi Private Sewage Code and do not replace your municipality's or engineer's requirements.
Dimensions are approximate figures from the factory's size tables; the exact dimensions of your tank are on the drawing supplied with the quotation on request.
Frequently asked questions
How do I work out the capacity for my home?
Occupants × 150 to 250 litres a day × two or three days of reserve. The tank sizing guide has a ready table and four worked examples.
My contractor is about to dig. What should I give him?
The underground installation guide: eight steps with the dimensions. Take the tank's diameter and length from the quotation first, because the pit length is set from the tank length.
Is a plastic tank enough for me?
For a small roof tank it can be a reasonable choice, and it is usually cheaper at small capacities. For a buried tank, a large capacity or a narrow plot, read the GRP vs plastic guide.
What will the municipality check on a septic tank?
The septic tank rules guide puts the code figures in one table: chambers, minimum capacity and manholes. Details vary by municipality, so check yours before ordering.
What keeps the warranty valid?
Following the installation guide and keeping the invoice with the warranty certificate. The warranty guide sets out what is covered, what is not, and whose name goes on the certificate.