Effect of Wind on Soil-Structure Interaction: A Study on Hoarding Structure

  • Unique Paper ID: 207485
  • Volume: 13
  • Issue: 3
  • PageNo: 1100-1104
  • Abstract:
  • Hoarding structures are tall, wind sensitive lattice structures carried on a slender mast with a comparatively small foundation footprint, and are conventionally analysed assuming a rigid, fixed base support, an assumption that ignores the flexibility of the founding soil. This study evaluates the effect of Soil Structure Interaction (SSI) on a 19-metre wide, about 18-metre-tall lattice hoarding supported on a 4 column Circular Hollow Section (CHS) mast, by comparing a conventional fixed base STAAD.Pro model against a spring supported model in which the footing stiffness is represented explicitly using the NIST GCR 12-917-21 and Pais-Kausel embedded footing impedance method. The founding soil, a silty sand with governing SPT N value of 13, was assessed per IS 6403 for a 6.7 metre square footing at 2.0 metre embedment. The results show that allowing the footing to translate and rotate redistributes load away from the axial force couple between legs, with maximum leg compression falling by 57 percent and maximum uplift by 66 percent relative to the fixed base case, while the governing leg moment rises by 204 percent. An independent ETABS check confirms the top of mast displacement more than doubles under the spring supported condition. The base plate and RCC pedestal, designed for the conservative fixed base reactions, are both found adequate, with the manual pedestal design corroborated by an independent RCDC check within one percentage point.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{207485,
        author = {Sahil Abdulgani Shaikh},
        title = {Effect of Wind on Soil-Structure Interaction: A Study on Hoarding Structure},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {3},
        pages = {1100-1104},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=207485},
        abstract = {Hoarding structures are tall, wind sensitive lattice structures carried on a slender mast with a comparatively small foundation footprint, and are conventionally analysed assuming a rigid, fixed base support, an assumption that ignores the flexibility of the founding soil. This study evaluates the effect of Soil Structure Interaction (SSI) on a 19-metre wide, about 18-metre-tall lattice hoarding supported on a 4 column Circular Hollow Section (CHS) mast, by comparing a conventional fixed base STAAD.Pro model against a spring supported model in which the footing stiffness is represented explicitly using the NIST GCR 12-917-21 and Pais-Kausel embedded footing impedance method. The founding soil, a silty sand with governing SPT N value of 13, was assessed per IS 6403 for a 6.7 metre square footing at 2.0 metre embedment. The results show that allowing the footing to translate and rotate redistributes load away from the axial force couple between legs, with maximum leg compression falling by 57 percent and maximum uplift by 66 percent relative to the fixed base case, while the governing leg moment rises by 204 percent. An independent ETABS check confirms the top of mast displacement more than doubles under the spring supported condition. The base plate and RCC pedestal, designed for the conservative fixed base reactions, are both found adequate, with the manual pedestal design corroborated by an independent RCDC check within one percentage point.},
        keywords = {bearing capacity, ETABS, foundation stiffness, hoarding structure, RCDC, soil-structure interaction, STAAD. Pro, wind load},
        month = {August},
        }

Cite This Article

Shaikh, S. A. (2026). Effect of Wind on Soil-Structure Interaction: A Study on Hoarding Structure. International Journal of Innovative Research in Technology (IJIRT), 13(3), 1100–1104.

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