Steel-structure-curtain-wall



Steel Structure Curtain Wall

Curtain wall systems are factory pre casted systems. They are bought to the site and assembled. These are of two types based on the way each component is assembled.

Stick Curtain Wall System

Unitized Curtain Wall System

Stick Curtain Wall System involves its components to be assembled piece by piece on the building at the site. These are mainly installed in low rise building or small regions. This is because, to reach higher elevations exterior access is essential. For this additional requirements like scaffolding, cranes etc. will be required.

The above system gains the advantage of low shipping cost as onsite adjustments are possible. But the time and labor consumption is recorded to be high.

Transom or horizontal rails are horizontal members on the curtain wall panel. The mullions or vertical rails are anchored to the edge slab or beam. These are mainly involved in supporting the dead weight of the curtain wall. In conventional or sticky curtain wall system each system has to be placed one after the other. High quality check and precision in required for the installation. But in unitized system the factory product comes as two units alone which has to connected.

Past studies have showed that curtain walls seem to be resistant against lateral forces mainly earthquake, but there is measurable amount of damage caused. Even though damage can be repaired, there is economy loss and delay in business activity.

Curtain walls are considered as structural elements of a building. As it acts as a partition between exterior and interior environment of the building, it has a role in transmission of loads acting for structural stability.

It transmits wind induced loads to the primary structure. It also resists the seismic accelerations keeping the occupants comfortable. Other than this it has to resist gravity loads coming over it.

When considering the durability of the building, curtain walls play an efficient role in adapting to different temperature ranges. This is because of the case in high rise building, as the number of floors the temperature seems high and would be a risk factor for the occupants working in those floors. It is also required to have resistance against water penetration and hence stop corrosion.

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