How Olympic Size Swimming Pools are Constructed
Swimming athletes train and compete in Olympic-size swimming pools rather than in other bodies of water such as lakes and seas. A typical Olympic-size pool follows strict specifications outlined by the Federation Internationale de Natation (FINA), an organisation recognised by the International Olympic Committee to administer the standards used in aquatic sports. The pool measures 50 metres in length and 25 metres in width, has ten lanes that measure 8 feet and 2 inches each, and a depth of 2 metres at maximum.
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An Olympic swimming pool is first made by digging an approximately sized hole in the ground. When the target depth is reached, the plumbing, filtration system, drains, and other pool systems are installed. At the same time, other crew members assemble a framework grid consisting of 3/8-inch reinforcing rods that are spaced 10 inches apart and secured together by wire. The crew then sprays or pours a heavy coating of gunite, a mixture of sand and cement, around the rebar. When the material reaches a desired thickness, the crew trowels the wet substance to smoothen it. The assembly is then left untouched for a week or two to set.
When the material sets, the crew covers the gunite with plaster, fibreglass, exposed aggregate, tiles, or a special kind of concrete. Once this layer is dry, the pool is painted, usually by powder coating. Powder coating is more durable than conventional paint and is waterproof.
Once the coating dries and all the machinery and systems are in place, the pool is slowly filled with water. Finally, when the water reaches the desired depth, pool chemicals such as chlorine, bromide, and hypochlorous acid are introduced to kill harmful pathogens.
