Assessment of Residential Construction due to Sea-Level Rise and Saltwater Intrusion
Publication: ASCE Inspire 2023
ABSTRACT
The changing climate is impacting society, the natural and built environment, and system processes from our global supply chain to our transportation infrastructure network. Recent events such as Hurricane Ian and the tragic building collapse in Florida have raised even more concern for the vulnerability of infrastructure and civil infrastructure systems near the coast when confronted with natural hazards. Climate change is exacerbating these effects, particularly on residential construction, roads and bridges, and the effect that saltwater intrusion has on the integrity of infrastructure. With Delaware being a low-lying state, it is no stranger to flooding and how the structural integrity of infrastructure has been compromised and, in some cases, destroyed due to relentless amounts of water due to rising tides and compound inundation. As such, there is a need to predict these new forces on structures like low-rise wood frame residential buildings, and how to quantify the effects of deterioration rates onset by saltwater intrusion on its strength resistance due to imposed loads. Specifically, saltwater intrusion can impact groundwater salinity and nearby structures, thereby weakening foundations and compromising the overall structural integrity of building materials like concrete, steel, and wood. In this study, anticipated water levels due to expected sea-level rise (SLR) and inclusion of deterioration constitutive material models defined within a suite of structural (building) models are analyzed. To represent the degradation of wood structure over time, strength reduction factors of 15% and 40% are considered for the years 2030 and 2072, respectively. The effects on the in situ structural capacity of a suite of archetypes for residential construction are explored and compared to intended design capacities. The results are used to assess the structural vulnerabilities and predict the risk of failure of these deteriorated structures when subjected to varying water forces because of SLR and compound inundation.
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Information & Authors
Information
Published In
ASCE Inspire 2023
Pages: 516 - 528
History
Published online: Nov 14, 2023
ASCE Technical Topics:
- Buildings
- Construction engineering
- Construction industry
- Construction management
- Floods
- Infrastructure
- Infrastructure construction
- Infrastructure vulnerability
- Residential buildings
- Residential construction
- Salt water
- Structural engineering
- Structures (by type)
- Water (by type)
- Water and water resources
- Water management
- Wood structures
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