The 2018–2019 UK residential dwellings clay shrinkage subsidence event

IF 2.1 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Building Pathology and Adaptation Pub Date : 2023-05-22 DOI:10.1108/ijbpa-06-2022-0091

Margaret MacQueen, M. Lawson, Wenbin Ding

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引用次数: 1

Abstract

PurposeIn the UK, responses to intense weather events regarding national and regional level perils include the support of a General Insurance policy at the address level as part of private residential and other insurance policies covering the key risks of flooding, subsidence and windstorm. In respect of the subsidence peril, dry summers can lead to many thousands of properties on shrinkable clay soils suffering differential downward movement as water is abstracted from the soil by vegetation. These events are forecast to increase in frequency and severity due to climate change, with costs for a dry event year of more than £500m to UK insurers. Assessing the character of these event years can inform government, local government, insurers and their agents as to the typical characteristics of an event year and its impacts. The purpose of this paper is to provide a comprehensive overview of the 2018 UK subsidence event year as it relates to trees and low rise buildings.Design/methodology/approachThe research material is taken from claims that originated within the period commencing in the Summer of 2018, which in the UK was dry and with high levels of claim notification, and is from the private database of Property Risk Inspection Limited, one of the largest UK specialist subsidence claims handling businesses.FindingsThe data clearly illustrates the wide range of vegetative species causing or contributing to claims in the UK, their age ranges, sizes and conditions, management options and the range of land uses and statutory controls that exist in relation to title and other boundaries.Originality/valueThere have been various small-scale studies looking at individual cases of subsidence and the impacts of vegetation, but there have been no detailed investigations of large-scale claims-driven events such as the 2018 surge. The importance of this population-level investigation will only increase given the modelling for increased hot and dry summers over the coming decades.

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2018-2019年英国住宅粘土收缩沉降事件

目的在英国，对国家和地区层面的危险的强烈天气事件的反应包括在地址层面支持一般保险政策，作为私人住宅和其他保险政策的一部分，涵盖洪水，下沉和风暴等主要风险。在下沉危险方面，由于植被从土壤中吸收水分，干燥的夏季会导致收缩粘土发生数千种不同的向下运动。据预测，由于气候变化，这些事件的频率和严重程度将会增加，英国保险公司每年的干旱事件成本将超过5亿英镑。评估这些灾害年的特征可以使政府、地方政府、保险公司及其代理人了解灾害年的典型特征及其影响。本文的目的是提供2018年英国下沉事件年的全面概述，因为它与树木和低层建筑有关。设计/方法/方法研究材料取自2018年夏季开始的索赔，该时期英国干旱且索赔通知率高，并来自英国最大的专业沉降索赔处理企业之一财产风险检查有限公司的私人数据库。这些数据清楚地说明了在英国引起或促成索赔的植物物种的广泛范围，它们的年龄范围，大小和条件，管理选择以及与所有权和其他边界相关的土地使用和法定控制的范围。有各种各样的小规模研究着眼于沉降的个别案例和植被的影响，但没有对大规模索赔驱动的事件进行详细调查，如2018年的激增。考虑到未来几十年夏季炎热和干燥的增加，这种人口水平调查的重要性只会增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Building Pathology and Adaptation CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

4.80

自引率

18.20%

发文量

期刊介绍： The International Journal of Building Pathology and Adaptation publishes findings on contemporary and original research towards sustaining, maintaining and managing existing buildings. The journal provides an interdisciplinary approach to the study of buildings, their performance and adaptation in order to develop appropriate technical and management solutions. This requires an holistic understanding of the complex interactions between the materials, components, occupants, design and environment, demanding the application and development of methodologies for diagnosis, prognosis and treatment in this multidisciplinary area. With rapid technological developments, a changing climate and more extreme weather, coupled with developing societal demands, the challenges to the professions responsible are complex and varied; solutions need to be rigorously researched and tested to navigate the dynamic context in which today''s buildings are to be sustained. Within this context, the scope and coverage of the journal incorporates the following indicative topics: • Behavioural and human responses • Building defects and prognosis • Building adaptation and retrofit • Building conservation and restoration • Building Information Modelling (BIM) • Building and planning regulations and legislation • Building technology • Conflict avoidance, management and disputes resolution • Digital information and communication technologies • Education and training • Environmental performance • Energy management • Health, safety and welfare issues • Healthy enclosures • Innovations and innovative technologies • Law and practice of dilapidation • Maintenance and refurbishment • Materials testing • Policy formulation and development • Project management • Resilience • Structural considerations • Surveying methodologies and techniques • Sustainability and climate change • Valuation and financial investment

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