Structural Expression in Wind Sensitive Structures

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by Leighton Cochran,

Document Type: Proceeding Paper

Part of: Structures 2004: Building on the Past, Securing the Future

Abstract: Architectural details can impact both the local cladding pressures on a structure as well as the overall structural response. Figure 1 shows a pair of roof corner vortices on the upper surface of a nearly flat roof overhang. This mechanism typically results in the largest peak uplift forces on a roof. The elimination of these vortices, by some physical mechanism, will reduce the local cladding loads to be resisted by the design. Figure 2 shows one of many possible porous barrier geometries explored in the wind tunnel on a 1:100 model of the Texas Tech University Test Building at Colorado State University (Cochran and English, 1997).

Subject Headings: Roofs | Cladding | Vortices | Model tests | Colleges and universities | Architecture | Dynamic pressure | Structural response |

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