A Brief Overview Of Swimming Pools
A swimming pool, swimming bath, wading pool, paddling pool, or simply a pool, is a man-made container filled with water intended for swimming or other water-based recreation. A pool can be built either above or in-ground, and be constructed from materials such as concrete (also known as gunite), metal, plastic or fibreglass. Pools can be decorative or custom shaped and numerous sizes, or they may be standard sizes, the largest of which is often referred to as an “Olympic-Size” swimming pool.
Most pools in the world are measured (length, width and depth) in metres but in the United States pools are often measured in feet and yards.
In the United Kingdom most pools are in metres but older pools measured in yards still exist.
There also exists pools 33⅓ m long so that 3 lengths = 100 m. This pool dimension is commonly used to accommodate water polo.
The international standard is measured in metres and world records are only recognised when swum in 50m pools (or 25m for short course).
In general, the shorter the pool, the faster the time for the same distance, since the swimmer gains speed from pushing off the wall after each turn at the end of the pool.
Pools that may be used by many people or by the general public are called “Public Pools” whilst pools used exclusively by a few people or in a home are called “Private Pools”.
Many health clubs / fitness centres and private clubs have large pools used mostly for exercise whilst large hotels may have pools available for their guests.
Educational facilities such as schools and universities occasionally have pools for swimming or physical education classes, or competitive athletics such as a swimming team.
Swimming pools are also used for diving and other water sports as well as for the training of lifeguards and astronauts.