When designing a PP (polypropylene) pool, one common question is whether to choose a flat bottom or a slight slope towards the drain. Both options have their merits, and the right choice depends on the intended use of the pool, usage patterns, and the owner's priorities.
Flat pool bottom
A flat bottom is the most common choice for private PP pools. It provides a uniform depth throughout the pool and straightforward everyday use.
consistent depth and a reassuring sense of safety,
easier movement and standing in the water,
simpler maintenance and cleaning,
well suited to families and recreational swimming.
Slight slope towards the drain
A slight slope (typically 1–2 cm per metre) allows debris and sediment to flow more naturally towards the floor drain.
improved collection of dirt and sediment,
more efficient draining of the pool,
more frequently chosen for larger or sports pools.
Impact on structural design and construction
In PP pools, both a flat bottom and a slight slope can be entirely safe provided they are correctly designed and reinforced. A slight slope requires somewhat more precise construction, but this presents no difficulty for an experienced manufacturer.
Conclusion
The choice between a flat bottom and a slight slope is not a matter of quality but of functionality. When matched to the way the pool is used, either option can deliver a long-lasting and safe PP pool.