X. Regina Mary ¹, V. Rathinakumar ¹

Affiliations
1 School of Civil Engineering, SASTRA University, Thanjavur - 613401, Tamil Nadu, IN

Abstract

Objectives/Background: Every successful construction project has to be completed within the budgeted cost and the scheduled time. Constraints affect the project success. Therefore, proper management is required to reduce the constraints. Methods: This study deals with the methods that reduce time and cost constraints and resource management. A construction of residential apartment is taken for this study which is undergoing a time and cost overrun. The constraints are reduced by using techniques interconnecting activities properly and increasing the resources, schedules are prepared by means of Primavera software. The cost constraints can also be reduced by managing labour resources of different categories. Results: The actual schedule of the project is considered as base schedule. The base schedule is compared with the modified schedule using techniques which helps to reduce constraints. Schedule made by the technique interconnecting activities properly gives a time difference for the completion of the project of about 5 months from the base schedule of the project. Schedule made by the combination of the both techniques shows the result of 7 months prior completion from the base schedule of the project. Further, with the management on the labour resource of skilled, unskilled male worker and unskilled female worker in the construction activities, the cost spent on the labour resources reduces by 5%. Conclusion: This study supports project manager to guide himself to control the constraints in the planning, execution process and shows the importance of proper allocation of labours of different categories.

Keywords

Constraints, Cost Overrun, Labour Resource Management, Primavera, Scheduling, Time Overrun

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Ajay Poreddy ¹, V. Rathinakumar ¹, Yogendra Kumar ¹

Affiliations
1 School of Civil Engineering, SASTRA University, Thanjavur – 613401, Tamil Nadu, IN

Abstract

This paper aims to assess the waste present in execution of building services i.e., Mechanical Electrical and Plumbing (MEP) and suggest possible solutions to reduce them. Four ongoing projects were taken up for identification of waste types and quantification of waste was done on them. Works sampling was done and data from planning was used. Since the implementation of results in the site is not suggestible, so a simulation model which could be the replica of actual construction process is created and waste is assessed. STROBOSCOPE was used as a simulation tool for assessing effect of implementation of suggestions. Fire Protection System (FPS), one component of MEP, was chosen to develop a simulation model which could be the replica of actual construction process. Process improvement, resource constraints, process modification are evaluated using simulation. From results of work sampling it was found that only 20-24% of total time of worker was utilised in value adding works. Majority of their time (more than 40%) were spent on non-value adding works. After applying the improvement measures to the simulation model the FPS execution for one floor was improved from 22-23 days to 14-15 days and duration of non-value added activities were found to be reducing to greater extent. Hence it was concluded that the improvement suggested to reduce waste was effective and should be implemented to actual work site to find out the actual effect of it.

Keywords

MEP, Simulation, STROBOSCOPE, Waste, Work Sampling

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