Application Area

Tensile Structure for Auditorium

Tensile structures create unprecedented opportunities for large, clear-span interiors in contemporary auditoriums and performance stages that aren’t viable in heavy building methods. For most of the buildings, high-tension membranes that are held up by perimeter masts or a cable-net system eliminate the need for internal columns, permitting people to view the stage from every seat in the building without obstruction. This gives us a striking and monumental feeling, as well as providing a high-performance space to serve as a venue for all things that are a concert, show-day and live. Acoustics are one of the major issues of design of auditorium, and tensile structures can provide valuable information on this domain.

And although hard surfaces such as concrete can produce harsh echoes, the pliability of tensile membranes can be fine-tuned in order to manage sound reflections more efficiently. Permanent venues often maintain a double membrane system, consisting of an outer weather-proof surface and an inner acoustic liner with a barrier air gap or sound-absorbent material between the two. The arrangement dramatically enhances sound quality internally, as well as contributes to better thermal insulation and noise mitigation from external conditions such as rain or wind.

Similarly, the visual versatility of the fabric is an important part of the “show” itself. In its interior area, a white PVC or PTFE membrane can be seen as a gigantic 360-degree projection screen that facilitates immersive light shows, as well as visual effects, crossing the ceiling. Structurally, there are typical shapes of auditoriums that consist of barrel vaults for linear seating or conical peaks for radial, arena-style designs. Not only are such structures quicker to construct than traditional auditoriums, they provide an aspirational silhouette that makes the gathering a reference for the arts.