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IRJET- Quality Audit of Public Building Project by using Six Sigma Techniques
1.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 483 Quality Audit of Public Building Project by using Six Sigma Techniques Miss. Pandit Prachee Shrikant1, Prof. G.N. Kanade2 1M. E (Civil-Construction & Management) Student, Tatyasaheb Kore Institute of Engineering and Technology, Warananagar, India 2Prof, Tatyasaheb Kore Institute of Engineering and Technology, Warananagar, India ----------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Six Sigma is a quality program that, when all is said and done, improves your customer’s experience, lowers your costs, and builds better leaders-Jack Welch, expert in Six Sigma program. Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (drivingtoward six standarddeviationsbetweenthemeanandthenearestspecificationlimit) in any process from manufacturing to transactional and fromproducttoservice. ThisProjectdescribesthecompletion ofSix Sigma concepts in public sector Construction project to meet the quality standards and customer satisfaction. The critical objective of construction industries nowadays is to complete a project within a stipulated time and cost as per the required standards and specifications, minimization of waste and efficient use of resources. Six Sigma principles with an effective lineofattackinbuilding industry emphasizes on reducing variation and eliminating the root causes of defects. The basic theory of Six Sigma, Six Sigma principles, DMAIC (Define, Measure, Analyze, Improve, Control) methodology. And tools used in eachstageofDMAICmethodology have been going to discus in this Dissertation. We are going to conduct case study in a public sector to which Six Sigma principles are applied from start to finishing work. We will prepare a defect assessment and will find the existing sigma level of the process with corresponding yield. DMAIC methodology will be applied to enhance the quality of the existing process by analyzing the defects, their percentage of occurrence, the possible causes and effect of defects and recommendations to overcome them. The findings will suggest the proper training, management support and minor changes that is required in current work procedure which would help to improve the quality and ultimately enhancing the customer satisfaction which is of prime importance. Key Words: Six Sigma, DMAIC methodology 1. INTRODUCTION The Greek alphabet Sigmahasbecomethestatisticalsymbolandmetricofprocessvariation.Thesigmascaleofmeasurement is perfectly correlated to such characteristicsasdefects-per-unit,parts-per-milliondefectives,andtheprobabilityofafailure.Six is the number of sigma measured in a process, which has a target variation of only 3.4 per million as defects under the assumption that the process average could diverge morethanthelongtermbyasmuchas1.5standarddeviations.SixSigmacan be defined in more than a small number of ways. Six Sigma to be “a program intended at the near-elimination of defect from every item forconsumption,development and deal” Six Sigma to be “a strategic initiative to boost profitability,increasemarket share and improve customer satisfaction through statistical tools that can lead to breakthrough quantum gains in quality.” Six Sigma was launched by Motorola in 1987. As a result of a series of changes in the quality area starting in the late 1970s, with strong-minded ten-fold improvement drives. After someinternal pilot implementations, Galvin, in 1987, formulatedthegoal of “achieving Six-Sigma capability by 1992” in a memo to all Motorola employees. Six Sigma is a system which primarily can improve the quality and consequently the time management of projects. The Six Sigma system has already been implementing in different manufacturing sectors, and providentially it has brought about benefits. It has improved the time, quality and cost running in the projects, according to the Six Sigma Body of Knowledge1, which consists in the processcalled DMAIC(Define,Measure,Analyse,ImproveandControl).However,SixSigmafocusesresting on detecting the errors in the projects, with which it then can create a database to improve the process of the projects. 2. NEED OF STUDY The execution of six sigma is very less in the construction industry comparing to other industries due to lack of knowledge. The track record of the construction industry is very poor in terms of coping six sigmaimplementation,resultingintheaffection of project objectives like time, cost, quality, & scope. 3. LITERATURE REVIEW 3.1 Applying Six Sigma Principles in Construction Industry for Quality Improvement This paper describes the basic theory of Six Sigma, principles, methodology and various tools used. A case study of a residential building is taken in which the Six Sigma principles are appliedforinternalfinishingwork,theSixSigmamethodology has been adopted to improve the quality and is checked against the sigma level. The answer suggest that proper training and management supportand minor changes insidecurrent work procedurecan help improve the quality and ultimatelycustomer satisfaction which is of prime importance.
2.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 484 3.2 Analyze the current lean construction practices The purpose of this paper is to analyze the current lean construction practices amongst Abu Dhabi construction companies and to develop a practical framework for adopting lean construction techniques and measuring lean performance. An industry survey is used to collect information and data from construction companies in Abu Dhabi area. Collected data and information are organized, analyzed, andused to answer research questions.Thisstudyidentifiedandcategorized27constructionwastes in AD construction industry, specified 18 key causes of thesewastes, andestimatedtheirextentandimpactonprojectcost,quality, and speed. The study also analyzed the extent and impacts of 23 lean techniques in AD construction industry. The study found that only 32% of surveyed company are currently familiar with and/or already using lean construction techniques and concluded that the industry is in high need for a practical framework, such as the LPDS (bend over Project Delivery System) of LCI (Lean Construction Institute) for adopting lean techniques. 3.3 Implementing and Applying Six Sigma in Construction This paper states that Six Sigma is a statistical measure used to measure the performance of processes or products against customer requirements. Thispaper describedtheSixSigmaconceptasaqualityinitiativethatmaybeappliedintheconstruction industry. The principles, methodology, and metrics of Six Sigma are first discussed. The implementation phases as well as the training programs required are explained. A case study of how Six Sigma was pioneered in an organization in the building industry is presented. The findings suggest that management initiative in addition to support, relevant training, appropriate selection of pilot projects, and commitment by team members are crucial for the successful implementation of Six Sigma in the organization. The application of Six Sigma for improving the quality of internal finishes during construction is also explained. Improvement measures taken by a contractor helped to raise the sigma from 2.66s to 3.95s for quality of internal finishes. 4. NEEDS OF SIX SIGMA IN CONSTRUCTION INDUSTRY Six-Sigma can improve processes by eliminating all types of root causes through a variety of tools. Six-Sigma is a comprehensive method used to help businesses achieve and sustain a healthy level of success. The Six-Sigmasystemfocuseson customer needs, statistical analyses, continuous improvement, and business reinvention. Sigma refers to the amount of inconstancy or variance occurring in a process, and Six-Sigma equates to 3.4 Defects Per Million Opportunities (DPMO). Most defect opportunity measures are translated into the DPMO format, which indicates howmany defects,wouldariseiftherewere one million opportunities. DPMO = (No. Of X (Defects) in the data collection sheet / No. Of opportunities of defects ×m No. Of Units) × 1,000,000 Specifically, it 1) helps to identify and eliminate sources ofvariation in the process, 2) sustains success,3)setsperformance goals for all involved parties, 4) enhances value to customers, and 5) allows businesses to execute strategic change. Define, Measure, Analyze, Improve, Control (DMAIC) is a five-step Six-Sigma improvement model. DMAIC is commonly used by Six- Sigma firms to improve the current capabilities of an existing process. Anumberoftoolsandmethodscanbeusedineachstepof the DMAIC model. The DMAIC’s five phases along with examples of the tools applied in each phase are presented in Table.1. DMAIC Steps Examples of tools or methods Define: Identify the problem and the issues causing decreased customer satisfaction. Five whys and how System thinking Flowchart Measure: Collect data from the process Measurement system analysis (MSA) Benchmark Analyze: Evaluate the current process, identify the root causes of the problem. Causes & Effect Diagram Continual improvement Experiment Improve: Act on the data to change the process for improvement Pareto Chart, Design of Experiments(DOE) Failure Mode and Effects Analysis(FMEA) Process improvement Variation reduction Control: Monitor the process to sustain the gains Management Commitment Control Plan Process behavior chart. Table.1: Example of tools and methods used in Define, Measure, Analyze, Improve and Control
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 485 4.1Definitions of Six Sigma Six Sigma which started by Motorola, had received huge interest by professionals afterGeneralElectricandAlliedSignalhas achieved cultural challenges within their organizations. After these achievement, many booksand papers havebeenpublished. Some of these studies defined Six Sigma regarding their own perspectives: •“A disciplined method of using extremely rigorous data gatheringandstatistical analysistopinpointsourcesoferrorsand ways of eliminating them” •“A strategic approach that works across all processes, products, company functions and industries” •“A business strategy and a systematic methodology,use ofwhichleadstobreakthroughquantumgainsinproduct/service quality, customer satisfaction and productivity” 4.2 Six Sigma Methodologies Six Sigma has two key methods • DMAIC process (Define, measure, analyze, improve, control). • DFSS methodology (Design for Six Sigma) DMAIC is for existing processes which requires significant improvement due to falling below expected quality specification. DFSS as a systematic methodology is for designing new products and/or process at Six Sigma quality levels. DMAIC methodology and its main steps are explained by and these steps are summarized below. 1. Stage 1 - Define, first stages of DMAIC is for team forming,determiningtheresponsibilitiesofteam members,establishing team goals and review the process steps, basic steps are i. Define the problem: Problem should be based on measurable data and specific ii. Identify the customer: Identification of the customer includes the analyses of problem impacts and a detailed analysis of COPQ (Cost of poor quality). iii. Identify CTQ characteristics: Identification of CTQ (Critical to quality) is the determination of the important issues for customers. iv. Map the process: A visual representation of the existing process should be prepared in order to look beyond functional activities and core process. v. Scoping the project: Reduction of project scope is the main focus ofthisstep.Determinationofspecificprojectissues, a problem statement and brainstorm session are the purposes of scoping the project. 2. Stage 2 - Measure, second stage of DMAIC, is for having a plan for data collection, preparing a sufficient data sample and preliminary analysis of this sample. In this stage, Six Sigma team analyzes current performance through valid data in order to understand improvement opportunities and identify KPIV. i. Identify measurement and variation: Types, sources, causes and detailedimpactsof variationonprocessshouldbe defined by the establishment of measurement. ii. Determine data type: Six Sigma team should define data types that will becollected.Themainfocusistodecide what kind of data and knowledge required for process improvement. iii. Develop a data collection plan: Data collection plan provides data collection responsible and data displaying formats. iv. Perform measurement system analysis: Graphical and baseline analysis should be performed through MSA (Measurement System Analysis) in order to be sure that data collection plan works accurately and collected data are confidential. v. Collect the data: Collected data should be proper and provide enough information to Six Sigma team in order to determine root causes of the problem
4.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 486 3. Stage 3 - Analyze, thirds stages of DMAIC is for finding the root causes of defects, right approach styles to data and improvement opportunities i. Perform capability analysis: Baseline capability should be realized in order to understandperformancelevel ofthe process. ii. Select analysis tools: Six Sigma team should control the graphical analysis and decide which tools will be used in order to find the details of variation and performance. iii. Apply graphical analysis tools: A visual performance indications should be realized through graphical analysis techniques. iv. Identify sources of variation: Statistical tools are used in order to define the variations sources. The main focus in this step is to find and repair significant variations. 4. Stage 4 - Improve, fourth stages of DMAIC, is for designing, implementing and validating the improvements. This stage includes FMEA (Failure Mode and Effect Analysis), a preliminary cost/benefit analysis and preparation of necessary actions, basic steps are i. Generate improvement alternatives: Focus of this step is to define, generate and evaluate the possible improvements. ii. Create a "should be" process map: Mapping of best improvement opportunities should be realized by Six Sigma team. iii. Conduct FMEA (Failure Mode and Effect Analysis): This analysis is used in order to make the situation analysis of “before the failure”. iv. Perform a cost/benefit analysis: Cost/Benefit analysis is the comparison between expected benefits and improvements costs. v. Conduct a pilot implementation: The implementation of planned improvements should be conducted on a small scale. vi. Validate improvement: Sigma values before and after “Improve Stage” should be compared in order to understand the effect of process improvement. 5. Stage 5 - Control, last stage of DMAIC, is for the institutionalization of process/product improvements and following performance. This is a transition phase of process from Six Sigma team to original executers under detailed controlplan, basic steps are i. Mistake-proofing: Remove the error possibilities is the main focus of this step. It is important to remove errors before provoking defects in the process. ii. Long-term MSA (Measurement System Analysis): Data collectionshouldbedistributedoverthelong-terminorder to measure and monitor inputs/outputs of process improvements through Measurement System Analysis. iii. Appropriate and applicable charts (statistical process control): Graphical representation of process should be realized in order to control processes with lower and upper limits. iv. Reaction plan: That is a detailed plan of controlling issues and necessary actions if the revised process is no longer under control. v. The new or revised SOPs (standard operating procedures): Six Sigma team shouldperiodicallyrevisetheexisting documents and procedures in order to reflect improvements results. 4.3 Metrics & Belt System Six Sigma metrics measuresdefects ratewithoutconsideringthecomplexityoftheproductsandprocesses.Sigmaconceptas an international quality measurement technique was started by Motorola and better processes with few defects rates have higher sigma values.
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 487 Basic Sigma Conversion Table Yield = Percentage of items without defects Defects per million opportunities (DPMO) Sigma Level 30.9 690000 1 69.2 380000 2 93.3 66800 3 99.4 6210 4 99.98 320 5 99.9997 3.4 6 For instance; four sigma level mean that product satisfies requirements at 99, 4 % of the time and products numbers with defects are 6 210. Belt System which is a hierarchy between experts, is another challenge created by Six Sigma. Six Sigma team members are: Executive Leader, Executive Champion, Deployment Champion, Project Champion, Master Black, Black and Green Belt. The definitions of belts are, Master Black Belts (MBBs): have high level understanding of the Six Sigma projects, and DMAIC/DFSS. They can mentor Green Belts. Black Belt (BB): includes on-site project and off-site classroom activities and its training takes five months. Green Belts (GB): who have the basic knowledge of Six Sigma and DMAIC/DFSS work with Black Belts. Training of Green Belts takes approximately seven weeks. External consultants are mostly experienced trainers and take roles on establishment and management of first deployment plan. The hierarchy relations between belts are Chart - 1: Chart - 2: The Structured approach of Six Sigma & Belt Relations 5. PROBLEM STATEMENT AND METHODOLOGY 5.1 Problem Formulation Six Sigma is a system which primarily can improve the quality and consequently the time management of projects. The Six Sigma system has already been implemented in different industry sectors, and fortunately it has brought about benefits. It has improved the time, qualityand cost management in the projects, accordingtotheSixSigmaBodyofKnowledge1,whichconsists in the process called DMAIC (Define, Measure,Analyse,ImproveandControl)However,SixSigmafocusesondetectingtheerrors in the projects, with which it then can create a database to improve the process of the projects. Executive Leaders/ Sponsors Master Black Belts (also known as champions Black Belts (also known as Experts) Green Belts (also known as Agent / Advocates) Table.2: Basic Sigma Conversion Table
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 488 5.2 Methodology Six Sigma has two key methodologies: 1. DMAIC: It refers to a data-driven quality strategy for improving processes. This methodology is used to improve an existing business process. 2. DMADV: It refers to a data-driven quality strategy for designing products & processes. This methodology is used to create new product designs or process designs. 5.3 DMAIC Methodology This methodology consists of the following five steps. Define --> Measure --> Analyze --> Improve -->Control Define: Define the problem or project goal that needs to be addressed. Measure: Measure the problem and process from which it was produced. Analyze: Analyze data and process to determine root causes of defects and opportunities. Improve: Improve the process by finding solutions to fix, diminish, and prevent future problems. Control: Implement, control, and sustain the improvements solutions to keep the process on the new course. Chart - 3: Six-sigma’s structured methodology – DMAIC Define What is the process improvement opportunity? What is the scope of the problem? Who's invoed/ affected? Measure What does the process look like? How is the process performing today? What are the primary causes of failure? Analyse Where and when do defects occur? Improve How can we optimise? Control What controls can be put in place to sustain gain?
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 489 6. RESULTS AND DISCUSSION Sr. No Theory of Constraints (TOC) Total Mean SD 1 We frequently use Current Reality Tree (CRT) as problem analysis tools when looking for core problems. 69 2.76 1.42 2 We frequently use Conflict Resolution Diagram (CRD) to generate solutions to difficult problems. 75 3 1.55 3 We frequently use Future Reality Tree (FRT) to validate proposed changes. 69 2.76 1.33 4 We frequently use Prerequisite Tree (PT) to plan the implementation of changes. 71 2.84 1.37 5 We frequently use Transition Tree (TT) to implement changes. 69 2.76 1.30 6 TQM is a management philosophy and practice to ensure effective and efficient use of all available resources. 74 2.96 1.54 7 TQM aims to make customer satisfaction as the focus of a business. 71 2.84 1.46 8 Teamwork and participation are important for achieving a continuous improvement culture. 68 2.72 1.43 9 Training and education are vital elements with respect to TQM implementation. 79 3.16 1.46 10 Statistical techniques (such as Statistical Process Control, Design of Experiments, etc.)areimportantto ensure consistency of product and process quality. 76 3.04 1.34 11 Supplier involvement is vital in supporting quality improvement. 69 2.76 1.33 12 Management leadership, commitment and support determine the success of new change initiatives. 62 2.48 1.36 13 Management must provide adequate resources in every aspect of the business. 70 2.8 1.32 14 A work environment, which is conducive for improvement, is created through management-worker partnerships. 72 2.88 1.39 15 Initiatives such as Kaizen, suggestion schemes, quality circles, etc. will motivate employees to participate in quality improvement. 74 2.96 1.43 Sr. No Management Leadership Total Mean SD 1 Top management ensures that every employee knows the company’s mission and business objectives. 65 2.6 1.22 2 Top management strongly promotes staff involvementinqualitymanagementandimprovementactivities. 72 2.88 1.27 3 Managers and supervisors empower employees. 77 3.09 1.58 4 Communication links are established between employees and top management. 72 2.88 1.42 5 Top management takes care of employee well being (e.g. welfare, health and safety provision, etc.). 62 2.48 1.26 6 Company fulfils its social responsibilities (such as environment friendly operation, charity to school, etc). 77 3.08 1.50 Table.3: Theory of Constraints (TOC) Fig - 1: Theory of Constraint (TOC) Table.4: Management Leadership
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 490 Sr. No Resource Management Total Mean SD 1 Human resource ability considered in improvement activities. 66 2.64 1.15 2 Employees are given information and training they need to do the job effectively. 74 2.96 1.34 3 Employees are given tools they need to do the job effectively. 77 3.08 1.35 4 Sufficient financial resources provided to support improvement activities. 72 2.88 1.56 5 Company manages its material resources effectively. 67 2.68 1.38 Sr. No Measurement and Feedback Total Mean SD 1 Customer satisfaction level are measured and monitored. 67 2.68 1.41 2 Information on quality and customers are collected and analyzed. 72 2.88 1.30 3 Information on operational and financial performances are collected and analyzed. 77 3.08 1.44 4 Employees’ views are listened to and acted upon. 72 2.88 1.54 5 Employee performance are measured and recognized. 74 2.96 1.40 Fig - 2: Management Leadership Table.5: Resource Management Fig - 3: Resource Management Table.6: Measurement and feedback
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 491 Sr. No Continuous Improvement Total Mean SD 1 There is a quality improvement coordinating body (e.g. quality steering committee). 65 2.6 1.12 2 Improvement teams are active in all departments. 79 3.16 1.21 3 Quality improvement tools and techniques are widely used. 74 2.96 1.54 4 The company practices continuous improvement of all its products, services, and processes. 71 2.84 1.46 Sr. No Supplier Quality Management Total Mean SD 1 Suppliers are selected on the basis of quality aspects. 68 2.72 1.28 2 Company ensures that suppliers can maintain high technical standards and meeting quality specifications. 67 2.68 1.25 3 Company regularly conducts suppliers’ quality audits. 71 2.84 1.46 4 Company works closely with suppliers toward long term partnership and improvement. 69 2.76 1.51 5 Suppliers provide relevant quality records and data. 73 2.92 1.38 Fig - 4: Measurement and Feedback Table.7: Continuous Improvement Fig - 5: Continuous Improvement Table.8: Supplier Quality Management
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 492 Sr.No Systems and Processes Total Mean SD 1 Systems and procedures for quality assurances are implemented. 67 2.68 1.22 2 Internal data collection system is established. 73 2.92 1.19 3 Market information and feedback system is established. 70 2.8 1.53 4 The employees involved in different processes know how to evaluate them. 76 3.04 1.49 Fig - 7: Systems and Processes Table.10: Education and Training Sr.No Education and Training Total Mean SD 1 Top management always updates their knowledge. 71 2.84 1.37 2 Employees are trained for job related skills. 74 2.96 1.24 3 Employees are trained on total quality concepts. 76 3.04 1.40 4 Continuous learning is provided through education and training. 74 2.96 1.34 Fig - 6: Supplier Quality Management Table.9: Systems and Processes
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 493 Sr.No Work Environment and Culture Total Mean SD 1 A pleasant environment exists in all working areas. 68 2.72 1.51 2 Positive values such as trust, honesty, hardworking, are fostered by management. 70 2.8 1.38 3 Teamwork and involvement are normal practices in the company. 72 2.88 1.45 4 The company adopts ‘Employee satisfaction’ initiatives (such as suggestion schemes, profit sharing, etc.). 73 2.92 1.47 Sr. No Total Quality Management Results Total Mean SD 1 Customer satisfaction has shown improvement. 74 2.96 1.43 2 The numbers of products/service defects, errors, or failures foundbythecustomerhavedecreased. 66 2.64 1.38 3 The number of customer complaints has decreased. 80 3.2 1.47 4 Our financial results have been improving. 80 3.2 1.41 5 Our quality program has improved our business performance in general. 72 2.88 1.30 6 Our company has developed a culture that emphasizes quality. 65 2.6 1.32 7 The number of employees participating on quality teams has increased. 72 2.88 1.51 8 Employee satisfaction has increased. 69 2.76 1.39 9 Employee turnover has decreased. 73 2.92 1.44 10 Partnership with suppliers has improved quality of purchased parts. 70 2.8 1.35 11 Do you consider your TQM program successful? 77 3.08 1.47 Fig - 8: Education and Training Table.11: Work Environment and Culture Fig - 9: Work Environment and Culture Table.12: Total Quality Management Results
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 494 Sr.No Barriers to Tqm Total Mean SD 1 Lack of understanding. 73 2.92 1.44 2 Lack of preparation 66 2.64 1.32 3 Resistance to change 67 2.68 1.44 4 Lack of vision. 74 2.96 1.34 5 Lack of top management commitment. 78 3.12 1.54 6 Lack of customer focus. 67 2.68 1.44 7 Lack of resources. 68 2.72 1.43 8 Lack of systems and structures for TQM activities. 71 2.84 1.49 9 Availability to training. 74 2.96 1.46 10 Training with no purpose. 68 2.72 1.24 11 Costly consultancies, training programs. 75 3 1.29 12 Lack of rewards and recognition. 74 2.96 1.40 13 Lack of effective measurement criteria. 78 3.12 1.45 14 Lack of evaluation procedures and benchmark indices. 62 2.48 1.26 Fig - 11: Barriers to TQM Fig - 10: Total Quality Management Results Table.13: Barriers to TQM
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 495 7. CONCLUSIONS Six sigma philosophy is widely accepted by manufacturing industries and it also possible to implemented in construction industry withlittle fragment modify more research work is required in this field, so greatscopeofresearchisaccessiblefornew researchers in this field. Past case study reveal that it required team efforts involving top management and every worker in the organization to fully employ the philosophy. However, realization among consultant, engineers and employees concerning six sigma in construction shouldbe produced. From variousliteraturesconclusionauthorfeelthat,usesofsixsigmainconstruction industry under different situation plays significant role. In current years there has been a lot of attention in the request of Six Sigma principles. Several papers have been presented on this subject substantiating the meaning of adopting Six Sigma to improve process performance. One of the challenges of Six Sigma is to reach results quicker than other improvement methods. Even though some researchers evaluateSix Sigma as a new management approach, itcan be said thatadoptionofSixSigmatoconstructioncontext can be realized by combination of existing quality initiatives and Six Sigma. In this thesis, after the completion of the entire works, the following benefits will be obtained: Use replacement, Reduce or recycle, Eliminate the unnecessary things, Doing different tasks at the same time, Easy work flow, Develop collaboration, Introduce cross training, improve the level of inspection, concentrate on preventive maintenance of tools and equipment, Institutionalize, Develop accident plans, Reduce the number of components, present job site displays to publicize project information, Remove negotiator. 8. FUTURE SCOPE Six Sigma can be implemented in different types of construction projects and site environment such as: transportation, water, power plant, structure, industrial and residential projects. That’s why; this research will not focus on any special project types. Furthermore, this study will attempt to cover site and office based operations of construction projects. Considering the mentality difference between project managers, site and office engineers, it is important to reflect their ideas and perspectives about process improvement. REFERENCES [1] Meena Ahirwar, Dr. Devendra Verma, (Issue 6, June 2014) Volume 3. “A Review of Six Sigma Approach: Methodology, Implementation and Future” International Journal of Science and Research (IJSR). [2] Sneha P. Sawant1and, Smita V. Pataskar. (2014) “Applying Six Sigma Principles in Construction Industry for Quality Improvement”. [3] Francisco RibesGarc´ıa, Tutor: Dr. Javier Benlloch Marco (February 13, 2014) “Six Sigma Implementation within the Building Construction Industry”. A Case Study of the Research Building Construction. [4] Sunil V. Desale, Dr. S. V. Deodhar (Nov 12 TO Oct 13), Volume 2 “Lean Six Sigma Principal In Construction” A Literature Review Related To Abstract. [5] Raid Al-Aomar (2012) “Analysis of lean construction practices at Abu Dhabi constructionindustry” TechniquesAnalysis.
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 12 | Dec 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 496 [6] Muharrem Firat, Yilmaz (2012) “Six Sigma within Construction Context as a Quality Initiative, Performance Indicator/Improver, Management Strategy”. [7] Low Sui Pheng and Mok Sze Hui (JULY/AUGUST2004) “ImplementingandApplyingSixSigma inConstruction” Journalof Construction Engineering and Management. [8] Celep Oguz, Yong-Woo Kim, et al. Implementing Lean Six Sigma: A Case study in Concrete Panel Production. [9] John Maleyeff, Professor, Lally School of Management & Technology Rensselaer PolytechnicInstitute,HartfordCampus. “Improving Service Delivery in Government with Lean Six Sigma”. [10] S. Sriram, A. Revathi, Implementation of Six Sigma Concepts in ConstructionProjectfor EnsuringQualityImprovements, IJIRSET, An ISO 3297: 2007 Certified Organization) Vol. 5, Issue 4, April 2016 [11] Tariq S. Abdelhamidi, Six Sigma in Lean Construction Systems: Opportunities and Challenges, MichiganStateUniversity [12] Maryam Dabbaghi Tehrani, Performance Improvement in ConstructionProjectbasedonSixSigma Principles, University College of Boras, School of Engineering, 2010. [13] Hongbo Wong, ‘A Review of Six Sigma Approach: Methodology, Implementation and Future Research’, Advanced Vocational and Technical College, 2008. [14] Amitha P, Dr. T. Shanmugapriya, Implementation of Lean Six Sigma in Construction, International Journal of Science, Engineering and Technology Research (IJSETR),Volume 5, Issue 11, November 2016 [15] Snehal A. Ahire, Pranali M. Shirsath, Neha P. Ninawe, Prof. Deepali Kadam, Construction Industry Survey Awareness regarding Six Sigma, Snehal A. Ahire, Pranali M. Shirsath, Neha P. Ninawe, Prof. Deepali Kadam,Vol. No.6, Issue No.03, March 2017. [16] Susmy Michael, Sahimoleldhose, Defects reduction in High rise residential building using six sigma: A case study, International Journal of Scientific Engineering and Research, ISSN: 2347-3878, volume 4(3),(2014), 31. [17] Megan Florent Tchidi: Process and Quality Improvement Using Six Sigma in Construction Industry: Journal of Civil Engineering and Management: Vol 18, No 2, 2012
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