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Wind Pressures on 4∶12-Sloped Hip Roofs of L- and T-Shaped Low-Rise Buildings

Title:

Wind Pressures on 4∶12-Sloped Hip Roofs of L- and T-Shaped Low-Rise Buildings

Shao, Shuai, Stathopoulos, Ted, Yang, Qingshan and Tian, Yuji (2018) Wind Pressures on 4∶12-Sloped Hip Roofs of L- and T-Shaped Low-Rise Buildings. Journal of Structural Engineering, 144 (7).

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Official URL: https://doi.org/10.1061/(ASCE)ST.1943-541X.0002077

Abstract

A comprehensive wind tunnel experimental study for 4∶12-sloped hip roofs of L- and T-shaped low buildings was carried out in a simulated open terrain exposure to examine wind load characteristics and assess the applicability of wind provisions specified by the American wind load standard for such geometries. Results show that considering roof shape effects, hip roofs with rectangular or complex plans perform differently from rectangular gable roofs and incur smaller local and area-averaged suction. For L- and T-shaped hip roofs, distinctive pressure distributions occur, particularly along roof eaves near building re-entrant corners, where considerable suction appears for the wind blowing toward these building re-entrant corners. Furthermore, the building length-to-width aspect ratio effects are in most cases moderate. Generally, the wind load provisions of the American wind load standard are adequate for L- and T-shaped hip roofs, except for the edge zone along ridge and hip with large areas, for which measured values exceed the code-specified wind pressure coefficients. Finally, it was found more appropriate to utilize the entire L- or T-shaped roof dimensions, as opposed to the rectangular section only, to determine the least horizontal dimension of such nonrectangular hip roofs for the definition of roof zones.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Article
Refereed:Yes
Authors:Shao, Shuai and Stathopoulos, Ted and Yang, Qingshan and Tian, Yuji
Journal or Publication:Journal of Structural Engineering
Date:2018
Funders:
  • 111 Project of China
  • China Scholarship Council
Digital Object Identifier (DOI):10.1061/(ASCE)ST.1943-541X.0002077
ID Code:986037
Deposited By: THEODORE STATHOPOULOS
Deposited On:30 Oct 2019 13:17
Last Modified:30 Oct 2019 13:17
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