How to make EARTH WORKS properly when installing Fiberglass Pool

We have many questions about earth works before installing the pool. It's very important matter to do it properly because it influences later condition of Your fiberglass swimming pool. So in this short post I want to explain how to prepare the ground in a propper way  before installing fiberglass pool.

1. En excavation

First construct an excavation pit in order to house the swimming pool taking into consideration the depth of the foundation slab. The size of the excavation pit constitutes the diameter of the swimming pool framework increased by 60-80 cm from each side – in order to ensure the proper conveyance of installation and piping works.







The process of swimming pool foundation shall take place on the original ground not on back ll soil. The soil congestion coe cient shall amount to the swimming pool load, which amounts to 1600 kg/m2. In case of existence of ground or layer waters in non permissible soils (clay, loam) the bottom layer should be supported, by a well congested thick grain soil of the thickness 20cm as well as additional drainage belt.

2. Founadtion slab

It is recommended to manufacture a bottom layer below the level of ground and surface water deposits/streams. The hardened soil foundation has been engineered to house the reinforced concrete foundation slab of its total thickness amounting to h=12cm. The size of the slab is equal to the external upper edge of each swimming pool. Reinforced concrete class B20. The reinforcement is done with application of 8mm diameter ribbed steel bar mesh of the opening size every 20cm. Remember that layer have to be leveled perfectly .

3. Styrofoam layer

The foundation slab is a smooth mortar surface, any surface slopes shall not amount to more than 0,5%. All works should be consulted with a construction specialist well acquainted to local ground conditions. The swimming pool is to be placed upon the foundation slab, should it still possesses slight unevenness, the slab should be levelled with a styrofoam layer.