>tunnel train plan
>tunnel
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>tensile membrane structures
>Tension fabric buildings are constructed using a rigid frame—which can consist of timber, steel, rigid plastic, or aluminum—and a sturdy fabric outer membrane.
>Compared to traditional or conventional buildings, tension fabric buildings may have lower operational costs due the daylight that comes through the fabric roof when light-coloured fabrics are used. This natural lighting process is known as daylighting and can improve both energy use and life-cycle costs, as well as occupant health.