Since the time, people engaged in the construction of their dwellings and other buildings, the front ones arose the question of the rise and move building materials. After all, without this work, it is practically impossible to build anything. At first, when the houses were small in size, the task of raising the materials was solved with the lowest cost of force. Several people calmly coped with such work. But when they began to erect large cult buildings, and from stone, people had to think about how to raise heavy stones to a height.
The easiest way to solve this problem was to attract a huge number of auxiliary workers, which lifted the goods to a significant height. However, this did not satisfy the long -standing builders, and they constantly invented various lifting devices. Scientists were actively engaged in solving this issue, it is enough to recall the mechanisms that the famous ancient Greek mathematician, physicist and engineer Archimedes, inventor of the Middle Ages Leonardo da Vinci proposed enough. In addition, there were many simple builders, whose names were lost in history, who did a lot to simplify the work on construction.
Bridge cranes are produced various carrying capacity, which means that there is an opportunity to choose exactly the one that is ideal for this enterprise. It is very convenient to use bridge taps for working in storage rooms. This makes it possible with a minimum number of workers, quickly move a large number of cargo through the warehouse, and load and unloading vehicles