Development of Risk Based Standardized WBS Work Breakdown

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Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018, by all parties involved in the construction of a construction project for planners project leaders. construction managers and contractors One of the most important things to be done in the early. stages of planning a construction project is to plan the resources to be used based on the Work. Breakdown Structure 2, Due to its complexity the successful management of construction projects from the perspective of. the contractor or project implementer depends on the maturation of the planning 3 Significance. of the importance of Work Breakdown Structure as follows 4. 1 The description of the program as a summary of the small parts. 2 Planning,3 Networking and supervision planning,4 Division of responsibilities. The need for standardized WBS is critical as it will present an integrated approach to project. management and present the basis for performance measurement 5 Therefore the development. of a standard WBS risk based standard flyover work designed for quality planning is proposed. The purpose of this research to the following,1 Make WBS Standards in flyover work. 2 Identify the implementation methods and technologies used of each flyover work package. 3 Identify activities based on the WBS based method of implementing flyover work. 4 Identify resources based on activities on flyover work packages. 5 Identify risk based activities and resources that affect the quality performance of each. flyover package, The scope of the study is limited to the following.
1 The research is done from the internal side of the contractor. 2 The project under study is a project that has been implemented from 2010 to 2017. 3 Research location in Jabodetabek Indonesia, 4 WBS developed standards are items that have a high risk on flyover work. 5 This flyover work using the box girder, 6 Quality planning referred to in the research is planning on flyover work. 2 WBS Flyover Risk Based for Quality Planning,2 1 Standard WBS Flyover. As a technical reference for the implementation of road and bridge project works within the. Directorate General of Binamargayang applicable in Indonesia there is a document of the general. specification of road and bridge construction works as part of contract documents of road and. bridge construction work used to achieve a product of work from the preparation process. methods of implementation materials equipment quality control and payment procedures. The General Specification of Binamarga 2010 has its third revision valid since November 12. 2014 since the issuance of the Director General of Highways No 10 SE Db 2014 regarding. IEOM Society International 2695, Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018, the Submission of Standard Procurement Document and General Specification 2010 Revision 3.
for Road and Bridges Construction Works, The General Specification Binamarga 2010 consists of 10 divisions to the following. 1 Division 1 General,2 Division 2 Drainage,3 Division 3 Land Works. 4 Division 4 Widening of Pavement and Shoulders, 5 Division 5 Concrete Pavement and Concrete Pavement Pavement. 6 Division 6 Asphalt pavement,7 Division 7 Structure. 8 Division 8 Refund conditions and Minor works,9 Division 9 Daily Jobs.
10 Division 10 Routine Maintenance, Meanwhile as a technical reference for the implementation of freeway and toll road projects. within the Directorate General of Binamarga both for the National Road Implementing Agency. BPPN BPJN and Toll Road Enterprises BUJT applicable in Indonesia there is a Special. Specification of Road Frequency and Toll Roads that have been in force since March 13 2017. since the issuance of the Director General of Highways No 02 SE Db 2017 concerning the. Submission of Technical Specifications and Special Specifications of Highway and Toll Road. 2017 in the Directorate General of Highways, The Special Specification of Freeway and Toll Road consists of 17 general divisions and 3 special. divisions to the following,1 Division 1 General,2 Division 2 Cleaning the Workplace. 3 Division 3 Demolition,4 Division 4 Land Works,5 Division 5 Galian Structure. 6 Division 6 Drainage,7 Division 7 Preparation of Ground.
8 Division 8 Aggregate Base,9 Division 9 Pavement,10 Division 10 Concrete Structure. 11 Division 11 STr structural Steel Works,12 Division 12 Other Jobs. 13 Division 13 Lighting Traffic Light and Electrical Works. 14 Division 14 Plaza Tol, 15 Division 15 Transfer and Protection of Existing Equipment. 16 Division 16 Toll Offices and Facilities,17 Division 17 Daily Jobs. 18 Division of SKh 1 09 Office and Field Facilities. 19 Division of SKh 1 16 Traffic Management,20 Division of SKh 1 20 Mobilization.
IEOM Society International 2696, Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018,2 2 WBS Risk Based Official Standards. Project risk is the possibility of events that bring undesirable consequences for the project. objectives If an event occurs then it may affect the scope of the project schedule cost or quality. Risk can be prioritized by assessing the probability of occurrence and its impact through. qualitative risk analysis 6 Since WBS ordinary standards may not consider the project risk. response standards based WBS based risk is the improvement of WBS standards coupled with. the risk response associated with the project objectives and targets in this study is the risk. response to quality performance,2 3 WBS Benefits for Quality Planning. The quality plan should determine the size and procedure tests inspections reviews etc. to assess the conditions and progress towards the preconditions to be achieved 7 To produce. the output there are several inputs in conducting the quality planning process according to. PMBOK as follows,Figure 1 Stage Research Process,Source PMBOK 2013 6. 3 Research Methodology, This study used a qualitative approach to achieve the formulation of WBS standards for flyover.
projects Secondary data analysis was conducted using Bill of Quantity of 7 flyover projects. Surveys and interviews were also conducted using structured questionnaires for experts with more. than 10 years of experience in the flyover project Risk identification was derived from the. standard WBS category and the variables were obtained from literature analysis archival analysis. then questionnaires distributed to respondents such as engineers supervisors and the project. manager of the ongoing flyover project Of the 42 returned questionnaires qualitative risk. analyzes were performed using the risk probabilities of PMBOK and the impact matrix to find the. dominant risk variable, Level 1 is the name of the project itself level 2 is a clump of work Level 3 is for the type of. work Level 4 is the work package Decomposition continues with activity and resources for the. next level After obtaining the wbs standard the next process is to identify risks based on the. work plan and its activities from WBS standards An extensive literature review was conducted to. identify common risk factors that may occur in construction projects that affect costs. performance The category or group of risk factors is the work package including its activities. and resources This resulted in the identification of 42 factors categorized in the group as 1 Work. IEOM Society International 2697, Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018, Package 2 Alternative Method Design 3 Activity 4 Material 5 Equipment 6 Labor 7. Environment Risk Based Above the risk variables used in this study are as follows. Risk Variables That Influence The Performance Of Flyover Projects. RISK VARIABLES THAT INFLUENCE THE PERFORMANCE OF,WBS CATEGORY. FLYOVER PROJECTS, The realization of unit price of each work package is not as.
WORK PACKAGE, The realization of the volume of the work pack does not fit the. The results of the work are not in accordance with the. requirements,X4 Work is not on schedule,X5 Subcontract productivity is not as planned. Aspects or methods aspects or methods can not be applied in the. Installation is not in accordance with the specifications or images. 5 The erection precast activity does not match the specification or. the planned image,X9 Identify incomplete project activity. X10 Changes in specifications and material types, X11 The scarcity of materials as per the job planning specifications. X12 Changes in the condition of the material source to the project site. 6 X13 Material quality does not match job planning specifications. X14 The use of materials in the field exceeds the planned volume. Substitution replacement material that does not comply with. specifications,X16 Bad tool condition,X17 Faulty equipment.
X18 The equipment is not working properly, X19 The productivity of the planned equipment is not as needed. The equipment used is not in accordance with the planned. implementation method, X21 Equipment specifications are not in accordance with the planning. X22 Equipment quality is low,X23 Work area is limited. X24 Number of manpower not according to plan,X25 Job quality tolerance is exceeded. RESOURCES LABOR,X26 Lack of communication lack of communication.
X27 False perception in reading of Fig,X28 Poor quality control qc qa. X29 Reworking, X30 Lack of major equipment maintenance by workers. X31 Realization of labor productivity is not in accordance with the plan. X32 The type and amount of labor required is not available. X33 Lack of field workers,X34 Labor Disputes,X35 Worker productivity is less than planned. X36 Labor accidents,IEOM Society International 2698. Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018,RISK VARIABLES THAT INFLUENCE THE PERFORMANCE OF.
WBS CATEGORY,FLYOVER PROJECTS, X37 The quality of the workforce is not as planned. The division of duties and authority is not understood by the. X39 There is no working procedure,ENVIRONMENT X40 No WI work instruction. X41 Changes in work schedules do not take into account the weather. X42 No waste management is planned, 6 Documents of subsurface geological conditions are incompatible. with actual field conditions, Document The subsurface hydrological conditions are not in. accordance with actual field conditions,X45 Natural disasters.
Source Self processed 2017, The data were collected using a questionnaire survey to find out the practitioners perceptions of. risk factors The target respondent is an experienced practitioner in the apartment construction. project Five likert scale points were selected to obtain the probability of risk factors in the. construction project identified in the literature review The 5 point Likert scale is adopted where. 1 represents rare 2 occasionally 3 rather often 4 often and 5 very often Likewise. likert scale is also chosen to get the impact of risk factors where 1 is represented very low 2. low 3 Medium 4 high and 5 very high Once the probability and impact are determined. the risk score can be calculated by the following expression. Where R risk factor P probability and I impact The probability matrix and the impact or. risk level matrix Table 2 illustrate risk ranking for risk factors The risk matrix represents a. combination of impact and probability as shown below. Risk Level Matrix,Low Low Med High High,5 5 10 15 20 25. Frequent 4 4 8 12 16 20,Probability,3 3 6 9 12 15,Occasionally 2 2 4 6 8 10. Rare 1 1 2 3 4 5,Source PMBOK 2013 6,IEOM Society International 2699. Proceedings of the International Conference on Industrial Engineering and Operations Management. Bandung Indonesia March 6 8 2018, Each of the risks placed on the table will fall under one of the categories in different colors Here.
are some details about each category, 1 Height the risk of falling on a cell is marked in red is the most critical risk and it is should be. handled on a high priority basis The Project team must be prepared to act immediately to. eliminate the risk completely, 2 Medium the risk of falling in one yellow cell may affect cost performance is handled. directly at the project level project manager, 3 Low risk the risk of falling in a little blue cell effect on cost performance and handled. directly by engineers or related parties, To develop risk based WBS the highest ranking risk variables are analyzed for their preventive. and corrective actions through pattern recognition as well as through the RBSxWBS matrix The. RBSxWBS matrix is a Risk Breakdown Structure mapping that affects WBS items The matrix. uses the dominant risk variable for RBS input and the Pareto method as the approach to selecting. a particular job is dominant at 80 of project cost for WBS item input The result of the risk. responses from interviews 7 experts from construction practitioners and academics with more. than 10 years of experience used to develop WBS standards. 4 Results and Discussion,4 1 Demography Result, There are 42 respondents have been re received Profile of respond.
various types especially in the field of infrastructure such as the construction of toll roads flyovers Flyover and tunnels Construction of the construction project requires knowledge expertise insight and experience in the construction world is not small This should all be owned 2694

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