Every bathroom needs some kind of sink, and bathroom sinks come in many styles from the simplest to the most luxurious and fancy. In many parts of the world, the bathroom sink is just a bowl, basin, hollowed out gourd, discarded kitchen sauce pan, or a bucket, with a source of water nearby. Sometimes the water is kept in a pitcher, a pan, or a barrel with a ladle. Other times, there is running water, if only from a barrel or cistern than has a valve or faucet attached to it, and this kind of container is either refilled by hand or when it rains, by collecting the rainwater. Some homes have special piping on the roofs or gutters, that helps to divert rainwater into the containers, so that it is easily available. And some sinks are natural, such as those found in old remnants of Indian encampments, where a hollow in a stone was used as a sink.
But for most of use in the world, bathroom sinks are basic plumbing fixtures that come prefabricated from a factury. These are either attached to the wall and hand from it by brackets and braces, or they are mounted on top of a pillar or pedestal, as a free standing sink that is not attached to a wall for support. The advantage of a wall mounted sink is that it takes up less space, especially on the floor. Most of the sinks that we see in the public restrooms of gas stations for example, are wall mounted sinks, and the drain pipe under them is also attached through the wall behind the sink. These do not touch the floor for any kind of support, and then that leaves room for putting a trashcan or other objects on the floor where a pedestal sink would take up the extra room. The weakness of a wall mounted sink is that sometimes, especially if people lean on the sink or sit on it, the brackets loosen and the sink will become unstable, wobbly, and eventually the plumbing and the sink will pull away from the wall and fall.
The most sturdy of all the designs for bathroom sinks is probably the ones that are mounted like kitchen sinks, on top of counters and cabinets. These sinks are very stable, because the wieght of the sink rests on the furniture or cabinetry, and the cabinets are usually firmly attached to both the walls and the floor, providing an excellent base with the ability to support a great deal of weight, sometimes hundreds of pounds at once.
To see bathroom sinks, and to see how to mount them in a variety of ways, visit any plumbing retail or wholesale center, where you can see not only pictures and designs, but actual models of the various types of sinks and mounting ideas.
For lots of information on bathroom light fixtures and other bathroom related topics, visit Bathroom Info at http://www.bathroom-info.com