Search results

Sustainable and resilient infrastructure projects aim to reduce flooding impacts and improve community adaptability. For instance, flood-resistant stilts elevate structures, mitigating flood damage. Comprehensive consideration is crucial when adding elements to housing projects, incurring costs for all involved parties. This study aims to assess the viability of concrete stilts for cost-effective flood mitigation in Malaysian terrace housing.

The study evaluates cost implications through a comparative 5D building information modeling (BIM) cost analysis of stilted and conventional (standard) housing models. This assesses the percentage increase in total cost. Furthermore, a survey of construction professionals was undertaken. The study used online convenience and stratified sampling techniques. Out of the 222 emails that were sent, 27 construction professionals located in Johor, Sabah and Selangor within Malaysia participated in the research survey. Their perspectives on stilt housing prospects and factors for costing such structures were analyzed through a descriptive analysis using SPSS.

The case study models revealed that the incorporation of stilts could lead to a 21.64% increase in the overall cost per unit. This cost increase was primarily attributed to the additional reinforcement required. However, the survey findings highlighted that a majority of construction professionals perceived the cost increment to fall within the range of 10%–20%. Consequently, it becomes imperative to meticulously consider cost factors such as foundational requirements, staircases, and the extended construction duration to effectively curtail expenditures. The prospect of heightened costs potentially posing a threat to profit margins and discouraging developers necessitates careful financial management. Notwithstanding these challenges, the survey's insights underscored that professionals in the construction industry indeed recognize the potential of stilt technology in the realm of flood mitigation and management, particularly within housing projects.

This research has significant practical implications. It provides a precise financial contrast between housing categories using 5D BIM and incorporates construction experts’ viewpoints on raised housing. Enhanced design considerations for raised housing can make it economically viable, offering a cost-effective, nature-based approach to flood mitigation. This approach can bring substantial benefits to residents by reducing flood-related damages and enhancing community resilience.

One of the notable aspects of this research is its originality. It uses a dual quantitative methodology involving modeling and survey techniques to address its objectives effectively. This approach contributes significantly to the relatively limited body of research focused on stilt housing and the application of 5D BIM. By combining these methodologies, the study explores a relatively uncharted area, making a valuable contribution to the field.

The feasibility and viability appraisal technique is becoming increasingly crucial in the planning systems, theory, applications and outputs for property development and project investments. This paper aims to account for the findings of the practices associated with risk in the feasibility and viability appraisal process. Also, it examines the need for a practical framework for conducting a feasibility and viability appraisal, which can be employed by estate surveyors and valuers in Nigeria

This study adopted purposive sampling techniques to administer 240 sets of questionnaires, out of which 210 sets were well-thought-out to be useable for the analysis after data screening. Statistical package for social sciences (SPSS), structural equation modelling (SEM) and analysis of movement structures (AMOS) were the main analytical tools used to carry out the reliability test, normality test, exploratory factor analysis, confirmatory factor analysis, measurement and structural model.

The analysis results indicated that the P-values of the various forms of concepts of risks in feasibility and viability appraisal process (preparation) for property development and the investment market was statistically significant: technological factor - 0.000; political factor- 0.000 and economic factor- 0.000. However, a non-significant effect was found with socio-environmental factors on the preparation of housing development appraisal with P-value 0.155, and that risk management is neither holistically implemented in the feasibility and viability appraisal process nor extensively taken into cognisance.

This paper reports the results of the practices among estate surveyors and valuers in regarding the risk associated in the preparation stages of the feasibility and viability appraisal process

There are limited studies that suggest risk management factors in the appraisal reports for property development. Although previous studies have identified the risk factors, there is a lack of emphasis on management, which entails identification, assessment, monitoring and control. This study, therefore, recommends the incorporation of risk management into the feasibility and viability appraisal process implemented by estate surveyors and valuers. It is envisaged that the process will protect investors from the potential risk factors associated with investments in property development.

The study highlighted the need for practical or empirical research to be used to assess the significant risk factors that are needed to be reflected in the preparation stages of the feasibility and viability appraisal conduct of estate surveyors and valuers in Abuja, Nigeria.