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Faulty Components Detected During Construction Cost

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6-15% of construction cost is found to be wasted due to rework of defective components detected late during construction and 5% of construction cost is wasted due to rework of defective components detected during maintenance.[i] Within the current drywall processes, we have found multiple operational issues which may be leading to increased quality problems and project costs. Some of the areas that need to be addressed are forecasting, process flow, and inventory management and supply chain problems.
The current quality issues within the drywall processes are having a direct impact on the estimator’s ability to forecast the inventory needs for the projects as well as overall cost of the work. The re-work necessary to address the quality concerns of the customers is having a direct impact on the ability to forecast the amount of supplies (drywall sheets, screws, etc.), labor, and process time needed to complete the job. The uncertain demand created by the need for rework is having a direct impact on the cost efficiency and an increase of forecasting errors by the estimators.
In addition to the forecasting issues there are operational issues throughout the drywall process that are of concern. During the process there is a bottleneck of up to 24 hours where the workers need to wait for the joint compound to dry. This wait time creates a flow stoppage for the entire process and may need to be addressed to help improve the time and cost efficiency of the drywall process. It

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