Significance of Foundation in Residential Building Construction in Coastal Regions

Tamara Chowdhury

doi:10.15866/irea.v2i4.3019

Significance of Foundation in Residential Building Construction in Coastal Regions

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Abstract

Construction of foundation for residential buildings in coastal regions imposes challenges to both designer and builder for building a sustainable structure. Construction of a successful building to satisfy the design criteria would require strong, enduring and tough components. The components of the structure should not decay, stay free from termite infestation, prevent metal corrosion and deterioration of concrete and masonry, to avoid weakening of any portion of the structural system. The challenges faced by the builders in constructing residential buildings in coastal zones are not usually found in inland locations.
Building foundation in a coastal region consists of layout design, selection of foundation type and material for durability, and installation of foundation. Though pile foundations are widely used in Zone V and should also be considered for Coastal A Zones, shallow foundations, both concrete and masonry, may be adequate in another places. All coastal foundation materials – masonry, wood, concrete, or steel must be designed and installed to survive the adverse effects of high winds, wave action, moisture, and salt-laden air. This paper addresses the principles and practices of the foundation design for the construction of residential buildings in coastal regions and its challenges. Brief review of coastal building foundation practice, planning and design has been provided through literature survey of various technical papers, FEMA, ASCE 7-10, and Coastal Engineering Manuals. It is found that the most important factors for foundation design of residential buildings in coastal area are: consideration of high wind, dynamic wave action, erosion and scouring. Literature review for these factors has been provided in this paper. The significance of foundation design, planning, and permitting has been identified and discussed. The complexity, constraints, and difficulties of coastal building foundation have been analyzed compared to other geographic locations.

Keywords

Building Foundation; Coastal Region; Residential Construction; Wind Load

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