PROJECT PLANNING AND CONTROLLING THE CONSTRUCTION PROJECT OF A HOSPITAL HEMODIALYSIS UNIT LOCATED IN TANGERANG USING THE CRASHING METHOD

: The research was carried out by project planning and controlling to analyze the time duration and cost of adding labor and overtime hours at work on amendments to the construction of a hospital Hemodialysis unit located in Tangerang with the accelerated crashing method. Research analysis to see project planning and project control of amendments to the work of building a Hemodialysis unit for Crashing analysis work carried out by the accelerated method of adding working hours, adding labor and the combination of time duration to find the most optimal value


Research Background
In the implementation of the Hemodialysis Development project at the Tanggerang Regional Hospital, it experienced several obstacles which led to amendments that affected the implementation of the planned duration of work (Balderrama & Rodríguez, 2006).Increasing the number of workers and working hours, working with local communities and submitting additional time or contract amendments.The duration and labor equalization method is implemented in the project in order to obtain the optimum value in terms of work duration and labor.This research is to determine the optimum efficiency capacity for the amendments to the work to be implemented (Assefa Tsehayae & Robinson Fayek, 2016).A decrease in labor productivity is something that is always avoided.Lack of attention to worker productivity in a construction project can hinder construction work.

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Asian Journal of Engineering, Social and Health Volume 2, No. 8 August 2023 In the Hemodialysis development phase at the Tanggerang Regional Hospital which is planned to be completed in a duration of 13 weeks with the initial design reconstruction (Melissa & Basabih, 2023).Along with the work there is an increase in area which causes an increase in the volume and duration of the work which causes a delay in the progress of the work, (Assefa Tsehayae & Robinson Fayek, 2016).One strategy to overcome the problem of work delays is to use the project scheduling method.The Tangerang regional hospital development project carried out a network analysis consisting of several methods, namely related to labor and work duration managed with the microsft project tool so that jobs on the critical path are obtained and the value of worker needs and optimum time duration.

Research Problems
Based on the background that has been discussed above, questions arise that are used as the formulation of the problem in the research conducted, namely: 1. What is the time and cost of the project if it is accelerated (crashing) with additional work hours for the development of Hemodialysis amendments? 2. What is the time and cost of the project if it is accelerated (crashing) with the addition of working hours and labor in Hemodialysis amendments? 3. What is the optimum ratio of project time and cost with the addition of working hours and the addition of manpower

Research purposes
The purpose of the background that has been discussed above in the research conducted, namely: 1. Determining the time and cost of the project (during the transitional period of the remaining work implementation after the amendment) if crashing is carried out by adding working hours in the development of the advanced stages of the amendment to the Hemodialysis unit.2. Determine the time and cost of the project if it is carried out with the addition of labor and the duration of work time with the construction of Hemodialysis amendments? 3. Determine the optimum project time and cost by adding working hours and adding labor to the duration of the work?
After all the data that has been obtained from the field then data processing is carried out.Because the field data does not have a network diagram, both the Critical Path Method (CPM) (Tao et al., 2017).CPM or also known as AOA (Activity On Arrow) is a basic project management model in terms of planning, scheduling, and controlling organizational resources.The purpose of the analysis of the CPM method is to determine the first critical path for the project to start until the project is finished, because on this path there are activities which, if implemented late, will cause a delay in the overall project (Sakka & El-Sayegh, 2007).Preliminary deterministic analysis In this stage the implementation schedule obtained from the project will be processed, and a network that has dependencies between activities will be created, then a critical path is created using the Critical Path Method (CPM) and calculating the float value of the project.The project duration and costs generated at this stage serve as the baseline for the project Scheduling using the PDM (Precedence Diagram Network) method which aims to determine the comparison of planning duration between existing schedules (Sutrisno et al., 2018).Precedence Diagram Method (PDM), where the field only has a time schedule in the form of bar charts and S-curves.The initial step for network calculations is in the form of PDM using the Ms. Office so that jobs on the critical path are obtained (Suputra, 2011).For work that is included in the critical path, crashing (accelerated) calculations are carried out using two alternatives, namely additional working hours (overtime) for 1 and 2 hours and additional labor.From these two alternative calculations, the acceleration of a project's time and costs will be obtained as optimally as possible.hospital in the Tangerang area.2. The subject of this study is the analysis of project crashes with additional working hours (overtime) and additional manpower.

Problem Analysis
The work on the construction of a Hemodialysis unit located at a hospital in the Tanggerang area, the work has been completed 100% from the contractor, but the owner wants to add some further work that was agreed upon by the hospital team as a result of the review of the issuance of work on the procurement of isolation rooms, amendment 1 and amendment 2

Figure 1 Weigth to Work
Data consisting of S-Curve and Bar Chart scheduling with a duration of 7 days for each work item from the contractor.
The duration of 7 days for each work item determines the number of days for each work with reference to the max unit, the max unit is the maximum value of the labor available by the contractor.After getting the duration of the day using the AHSP SNI and co-contractor coefficients: From the results of the project analysis, the critical path is obtained which will be accelerated in the duration of the work implementation, the following is the critical path obtained by the MS project.The results of the critical path analysis show that the following crash duration items are crash duration work items: 1. Timeovertime can only be done for a maximum of 3 (hours) in 1 (one) day and 14 (fourteen) hours in 1 (one) week.2. Provide food and drink of at least 1,400 calories if overtime work is done for 3 hours or more 3.For the first overtime work must be paid at 1.5 times the hourly wage.
4. For each subsequent overtime hour, wages must be paid 2 times the hourly wage.
(Soeharto, 1995) Reinforced based on theory explaining that there is a decrease in worker productivity due to overtime work, what is meant is a productivity index perpendicular to the need for workers' overtime hours, if 1 hour of overtime then the productivity index is 1.1, if 2 hours of overtime the productivity index is 1.2, likewise 3 hours of overtime, the productivity index is 1.3 and the maximum index for maximum overtime hours is 4 hours where the productivity index is 1.4.

Labor productivity with overtime hours
Crashing duration or acceleration with the crashing method, for an alternative to adding working hours, a reduction in total cost is obtained.
The conclusion of the calculation of the addition of overtime wages to the workforce that is implemented on the critical path with the addition of 1 hour and 2 working hours, the following is a table of the critical path that has been implemented on the critical path in the work of amendments to Hemodialysis hospitals in the Tangerang area.

Figure 7 Acceleration Duration Against the Addition of One Hour Overtime
The concluding results in finding the value of the duration of crashing against the normal duration of work can be seen that the normal duration without a Finish to Start / Start to Start link is carried out for a total of 45 working days.

Figure 8 Duration of Acceleration Against the Addition of Two Hours of Overtime
The concluding results in finding the value of the duration of crashing against the normal duration of work can be seen that the normal duration without a Finish to Start / Start to Start link is carried out for a total of 45 working days.

Calculation of Acceleration Costs Due to Additional Overtime Hours
The calculation of the addition of overtime hours is carried out at 1 hour and 2 hours of overtime, the following is the result of the analysis of the calculation of additional working overtime hours.In connection with the addition of overtime to the workforce, the normal duration value is obtained without the addition of overtime hours of Rp. 19,822,435, the total labor wage for the 1 hour overtime duration analyzed at the critical value is Rp.21,484,500 and the total labor wage for the 2 hour overtime duration worked on the critical path is Rp.23,921,365.
Results Input duration of acceleration on the critical path to Ms Project with the addition of 1 working hour of overtime is 31.78working days.
The analysis of the number of workers implemented is the same as the normal duration, it can be seen that the level of labor productivity is the need for more workers in week 1 in September with a level of need of 14 workers, the following is a picture of the need for labor:  The results of the data analysis that has been calculated using the Ms Project and the calculation of the analysis of the number of workers needed in the duration of the week, can be seen from the following table Table 4.11, which concludes the value of the minimum workforce, the maximum workforce and the average workload implemented per week:  Fathonah & Saputrab, n.d.) From the previous calculation, the number of workers (resources) in normal work is obtained.The normal number of workers can be used as a reference in determining the number of additional workers.In order to add manpower, one must consider costs and time by finding the most optimal one.From the analysis, experiments were carried out to increase the workforce, namely by using the addition of 10%, 20%, 30%, 40% and 50% of the normal number of workers.From the addition experiment, the most optimal addition of labor will be obtained.Below is an example of increasing the workforce using an addition of 50% of the normal number of workers

Additional manpower with crashing duration of 1 hour overtime
He obtained the addition of work duration to the workforce and the calculation of the addition of 1 hour overtime which has a crashing value.The following is the crashing value for optimizing the addition of labor and 1 hour of overtime:  The stages of the combination of accelerated work are carried out by adding labor to work.It can be seen that the total duration of work with the addition of labor and the addition of 1 hour of overtime is 35.7 days.
Calculation of the value of workers' wages in the addition of 1 hour of work and additional labor:

Addition of 1 Hour of Work and Additional Labor
The results of the analysis can be seen that for a critical duration, the number of additional workers is enough to influence the increase in costs for each work item that is being accelerated.The duration of the acceleration in adding workers and the duration of 1 hour overtime is 34 working days with a total worker wage of Rp. 23,539,141.80,the

Additional manpower with a crashing duration of 2 hours overtime
Same as the quote above regarding the addition of labor with the addition of 2 hours of overtime, the calculation of the implementation of the increase in labor with the addition of 2 hours of overtime.The following is the result of calculating the duration acceleration work analysis with the addition of labor and the addition of 2 hours of overtime.

Figure 19 Duration of Acceleration Due to Additional Labor
The results of the analysis can be seen that for a critical duration, the number of additional workers is enough to influence the increase in costs for each work item that is being accelerated.The duration of the acceleration in adding workers and the duration of 2 hours of overtime is 31 working days with a total worker wage of Rp. 28,494,751, the difference between the budget value and the normal duration is Rp.8,672,315.

Cost and Time Analysis of the Project with Normal Duration, Adding 1 hour Overtime and Adding 2 Hours of Overtime to the Critical Path
The results of the Normal Duration Job Analysis are:

Comparison of Time and Cost of Work Acceleration
Acceleration of work obtained when completing the project without a combination with normal duration is 45 working days, for the duration of additional working hours the duration of 1 hour of overtime is 40.58 days and 2 hours of overtime on the critical path is 36.52 days, while the duration of additional working hours and labor on the left track is additional labor plus 1 hour of overtime is 38.78 days and additional labor plus 2 hours of overtime is 34.88 days, the following is a comparative job analysis table time and cost with acceleration duration:

Figure 20 Time and Cost With Acceleration Duration
The results of the analysis of the accelerated work implemented can be seen that there is a decrease in the number of working days that are implemented without the influence of link-days.The following is a detailed image of the table.

Figure 21 Duration Works
The following is a job analysis graph of the duration of work time that affects the acceleration of work:

Figure 22 Graph of Work Duration Effect of Job Acceleration
The results of a comparative analysis of costs reviewed with the duration of the critical value that is implemented for the duration of the project, it can be seen that the normal duration value on the critical path is Rp.22,300,240 and the 2-hour overtime on the critical path is Rp.24,778,044, and the duration of additional working hours and labor on the critical path is Rp.23,539,142 and the additional workforce with 2 hours overtime on the critical path is 31,580,834.
The following is a description table of the cost values obtained.The results of the analysis of the accelerated work implemented can be seen that there is a decrease in the number of working days that are implemented without the influence of link-days.The following is a detailed image of the table.

Figure 24 Norman Cost Comparasion with Critical Trajectory Acceleration Duration
The following is a job analysis of the cost graph of the influence of the acceleration of work:

Figure 25 Norman Cost Comparasion with Critical Trajectory Acceleration Duration
From the results of the study coupled with the work literature implemented on the researcher's work, the following is a comparative data on the analysis of the work implemented on the duration of the work, the results of the accelerated work analysis implemented can be seen that there is a decrease in the number of working day duration with the addition of working hours and additional workforce  The results of the analysis can be seen that the comparison of the decrease in normal duration to the acceleration duration is directly proportional to the acceleration value implemented by the author's analysis with the literature review, the value of work duration to normal duration if time is accelerated and the addition of bar chart workers will decrease the duration of work time.

CONCLUSION
Based on the results of the analysis of the acceleration of the addition of working hours and the addition of labor in the construction period, the amendments consist of Figure 3 Critical Path Obtained By The MS Project Figure 4 Crash Duration Items are Crash Duration Work Items Figure 5Productivity Index Figure 9Working Overtime Hours the value of labor requirements implemented for the normal duration, 1 hour overtime and 2 hours overtime are: Figure 15Average Workload Figure 16 Example of Granite Teralux 60x60 Job Analysis

Figure 17 .
Figure 17.Duration of Acceleration Due to Additional Labor Figure 18.
Figure 27 Comparison of Job Value and Job Literature Value Analysis concluded that the recap value of the amendments to the construction of hospitals in the Tangerang area is as follows:The total duration acceleration with the addition of 1 hour of overtime work and 2 hours of work on the critical path is: 1.Total Work Duration without PDM link adjustment to the work time schedule with additional working hours:The duration of the Crashing job is 1 Total Wages of Critical Path Workers : IDR 23,921,365

Figure 12 Normal Duration Labor Needs Analysis Figure 13 Analysis of Manpower Needs Overtime 1 hour Figure 14 2 Hour Overtime Labor Requirement Analysis
difference between the budget value and the normal duration isRp.3,716,706.60.

of Work Acceleration with Additional Labor 11. Analysis of Time and Cost of Adding Labor and Working Hours to the Critical Path
Crash duration work obtained in completing a project with a duration of work in one day is 8 hours of work plus a maximum of overtime in the Hemodialysis project of 1 hour of work and 2 hours of overtime work.The results of the analysis of the acceleration of the duration of work with overtime can be seen that the total work without the effect of Finish to Start -day / Start to start is 45 working days with a total wage budget of Rp.