A retractable roof system is the architectural elements used in many sports venues, where the roof is made of the right materials can bravely automatically deployed from several positions withdrawn or open to a closed position or comprehensive entirely covers the field of play areas and audiences. They are commonly used on premises where the weather is windy, extreme hot or extreme cold.
Another reason for the roof is to allow the enlargement of the natural grass playing field in environments where heat and cold are outstanding that will not make the installation and maintenance of fields such as high cost-price. Not only limited to this usage, but the roof is also used in residences, commercial buildings, swimming centre, and other places. If you want to install a retractable roof, you can refer to http://www.poolenclosures-poolcovers.co.uk/
Image Source: Google
Guidelines and recommendations for the design of the roof structure are of the following types:
1) Non-rigid collapsible type frame structure with a rigid or elastic material extended between the frame
2) The folding casing as tents.
Pool enclosure types are basically made of polycarbonate and profiles aluminium and have a supply of 'fresh air system'. It has an automatic locking system including security locking.