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<p>The impact of wind on low-rise buildings is sometimes undervalued, despite the fact that these structures can undergo significant aerodynamic effects that may dictate roof design. Existing international wind standards predominantly offer pressure coefficients for singular domical roofs, however information regarding structures with many domes is limited. This experimental study examines wind pressure distribution on low-rise building models using four domes configured in square and T-shaped layouts, assessed in a boundary layer wind tunnel at different wind incidence angles. The square-plan model was analyzed at 0° and 45°, while the T-shaped model was assessed at 0°, 45°, 90°, and 180°. In all incidence situations, the domical roofs mostly experienced suction, with minimal positive pressure zones on the windward surfaces. The suction intensified from the windward base to the apex and diminished along the leeward side. In the square configuration, the leeward domes encountered less suction owing to the protection afforded by the windward domes, whereas in the T-shaped plan, the lateral domes demonstrated increased suction relative to the central and windward domes. The study concludes that the design of low-rise buildings including many domical roofs must consider aerodynamic interference among the domes, since shielding effects can markedly diminish roof suction. The findings offer crucial experimental data for structural engineers and may aid in the future enhancement of international code standards for multiple-domed roof systems.</p>

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Experimental Investigation of Wind Loads on Domical shapes for Low-Rise Buildings

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • Astha Verma,
  • Deepak Sharma,
  • Saba Rahman,
  • Rahul Kumar Meena,
  • Ashok K. Ahuja,
  • Ritu Raj

摘要

The impact of wind on low-rise buildings is sometimes undervalued, despite the fact that these structures can undergo significant aerodynamic effects that may dictate roof design. Existing international wind standards predominantly offer pressure coefficients for singular domical roofs, however information regarding structures with many domes is limited. This experimental study examines wind pressure distribution on low-rise building models using four domes configured in square and T-shaped layouts, assessed in a boundary layer wind tunnel at different wind incidence angles. The square-plan model was analyzed at 0° and 45°, while the T-shaped model was assessed at 0°, 45°, 90°, and 180°. In all incidence situations, the domical roofs mostly experienced suction, with minimal positive pressure zones on the windward surfaces. The suction intensified from the windward base to the apex and diminished along the leeward side. In the square configuration, the leeward domes encountered less suction owing to the protection afforded by the windward domes, whereas in the T-shaped plan, the lateral domes demonstrated increased suction relative to the central and windward domes. The study concludes that the design of low-rise buildings including many domical roofs must consider aerodynamic interference among the domes, since shielding effects can markedly diminish roof suction. The findings offer crucial experimental data for structural engineers and may aid in the future enhancement of international code standards for multiple-domed roof systems.