A mezzanine building/floor is a raised platform independent of a building structure, supported by steel columns. This type of flooring can create additional space such as storage and extra-office space. These floors can create a new space very quickly without much expense and inconvenience of relocation.
A steel mezzanine building floor utilizes the overhead space in the existing premises with minimum amount of disruption and moreover in most of the cases, any planning permission is not required. It can be customized according to an organization’s own specific needs. A wide range of floor surfaces and sizes are available to maximize and improve the space in order to make the best use of the total volume of the premises. Mezzanine flooring can bear the load of both light storage and heavy machinery.
There are different types of mezzanines; including stick built, fiberglass, and rack-supported. The two most common types of mezzanines are cold rolled and structural steel. It is important to understand the difference in the ways in which the two types of mezzanines are manufactured because it helps us to choose the right product for a given job.
Structural steel mezzanine comprises of hot rolled structural I-beams which are connected in a post-and-beam manner to the I-beam columns. Open web bar joists are then used to construct the sub-floor support. While structural steel mezzanines have a higher dead load than cold rolled systems, they also offer other advantages. The most common amongst all the benefits is greater column spacing. Where the maximum achievable column spacing with the cold rolled is 10 to 15 feet, structural steel mezzanines can be used to achieve a column spacing of 25 feet and load ratings of over 125 kg/sq meter (the standard rating). This implies that by using structural steel mezzanine system, more material can be stored in a smaller area.
The finishing of these mezzanine systems can be done with the help of wet paint or power coated paint. Cold rolled systems can be pre-galvanized whereas structural steel must be hot-dipped for galvanization. Decking options for both systems include decking sheet and plywood, bar grating, and plank decking. With structural steel, there is an added option of either finishing the floor in concrete or with checker plate.