Purification of fresh water by gravity with the help of granular material is one of the conventional methods
of supplying potable water. In this mechanism, filter materials are placed on the reinforced concrete slabs
and water is cleaned after passing through the grains.
These slabs are classified into two patterns: thin (non-load bearing) and thick (load bearing). In thin parts,
slabs act as temporary molds and to provide the bearing capacity, cast-in-place concrete is placed on their
surface. The seamlessness of the space and joints between slabs is a special advantage that is provided
in the system of thin plates. Thin parts are made of ultra-high performance concrete reinforced with glass
fibers. The use of these parts, in addition to increasing the speed and quality, will also decrease the cost
of construction. The water organization is one of the biggest consumers of these parts.