Analysis and Mitigation of Delay in Construction of Multistoried Building

Any constructional project success can be realized by achieving its objectives within the planned time, budget and level of quality. One of the major problems that face the construction projects is being behind the schedule. Hence, there is a need to analyse the delays in the construction process followed by the mitigation process. This study focuses on the factor that causes a delay in the construction of multistoried residential buildings located in Kerala, India. The methodology adopted comprises data collection and analysis. Data collected include project type, duration of each activity, planned schedule and actual schedule. Time overrun of each activity was calculated, using this data. Duration Index and Delay Index was proposed and used to determine the critical activities. Delay prediction model was developed by considering its significant variables. The results from the prediction model revealed that the foundation, painting and masonry are the most influencing activities that contribute to the delay in the construction of a multistoried building. A questionnaire was developed in order to evaluate the cause of the delay in each activity. Data were gathered through the survey, ranked using Likert scale and relative importance index (RII) was found. Significant causes of delay and their severities on each activity were identified using RII. Response from the questionnaire survey concludes that the inadequacy of material and labour resources is the prominent cause of the delay in construction. This study paves a way in the construction engineering field to mitigate, analyse and overcome the overall delay in the construction of multistoried buildings.