Comparison Analysis of Time and Cost of Work Implementation with Time Cost Trade of Method (Case

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VOLUME 2 │ NUMBER 1 │ FEBRUARY 2022 http://world.journal.or.id/index.php/brpm

ISSN : 2963-1491

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Comparison Analysis of Time and Cost of Work Implementation with Time Cost Trade of Method (Case

Study of Fisheries and Marine Development Project Airlangga University)

Muhammad Fahyan Synatria Putra, Julistyana Tistogondo, Diah Ayu Restuti Wulandari

Departement of Engineering & Computer Science, Civil Engineering Study Program Narotama University Surabaya

[email protected], [email protected]

Abstract

There are three aspects that need to be considered in order to meet the target on the project, namely the cost, quality and time of study in the 8-floor building construction project, Faculty of Fisheries and Marine Affairs, Airlangga University, Surabaya. This writing aims to review, analyze construction projects, to determine work using the Time Cost Trade Off method, and to determine the most effective method for the project. tradeoff is an analytical method used to speed up project completion time by using a schedule compression method in order to get a project that is more profitable in terms of time and cost. Aims to get a project with an acceptable duration and minimize costs. Types of work that can be calculated using the Time Cost Trade Off method. Jobs included in the critical trajectory of work that should not have any time delay are Column Reinforcement Work on Floor 6 Zone I, Column Formwork Work Floor 6 Zone I, Column Casting Work Floor 6 Zone I. For the contractor with the addition of the TCTO method, it can be concluded that if there is a delay in work, the results of the comparative analysis of time and cost in this development project can be known through the results of this study.

Keywords

TCTO Comparative Analysis (Time Cost Trade Off)

1. Introduction

Projects can be interpreted as activities that take place within a limited period of time by allocating certain resources and are intended to produce products or deliverables whose quality criteria have been clearly outlined

There are three aspects that need to be considered to meet the target on the project, namely cost, quality and time. In a study at the 8-floor building construction project, Faculty of Fisheries and Marine Affairs, Airlangga University, Surabaya, the author will discuss the plan for calculating the duration of the work so that it can minimize things that will happen due to time and cost factors in the project.

2. Methodology

Time cost tradeoff is a deliberate, systematic, and analytical process by testing all activities in a project centered on activities that are on the critical path.

In preparing this Final Project, the author uses several basic theories to support the issues to be discussed.

All basic theories were chosen based on their relevance to the problems in the discussion of this Final Project.

Some of the basic theories that will be used include those related to construction projects, project success measures, project schedule preparation, cost budget plans, accelerating project completion time, Cost to time relationship, Cost Trade Off analysis and project management.

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3. Result and Discussion

3.1. Result of Additional Working Hours (Overtime)

Table 1 Result of Additional Working Hours (Overtime)

Activities that

Duration

Accelerated

Duration Normal Fee Accelerated Charges

Percentage of Acceleration

No. Volume Normal Fee

accelerated (Day) (Hour/Day) (Rp.) (Rp.) 100%

1

6th Floor Column Reinforcement

Work Zone I

7918,52

Kg 7 2,5 Hours

+7 days Rp.18.349.928,74 Rp.

14.204.371,95 23%

2

6th Floor Column Formwork Work Zone I

203,52

m2 10 2,5 Hours +

10 days Rp.32.326.758,60 Rp.

24178585,64 25%

3

6th Floor Column Casting Work

Zone I

33,50

m3 2 2,5 Hours +

2 days Rp.10.137.722.06 Rp.8.345.751,27 18%

3.2. Result of Added Manpower

Table 2 Result of Added Manpower

Activities that

Duration Normal

Accelerated

Duration Normal Fee Accelerated Charges

Percentage of Acceleration

Fee

No. Volume

accelerated (Day) (Hour/Day) (Rp.) (Rp.) 100%

1

6th Floor Column Reinforcement

Work Zone I

7918,52

Kg 7 5 Days Rp.2.621.418.39 Rp.

2.778.720. 6%

2

6th Floor Column Formwork Work Zone I

203,52

m2 10 8 Days Rp.3.232.675,86 Rp.3.412.880. 6%

3

6th Floor Column Casting Work

Zone I

33,50

m3 2 1 Days Rp.5.068.861,03 Rp.5.201.400. 3%

3.3. Discussion

Types of work that can be calculated using the Time Cost Trade Off method for jobs that are included in the critical trajectory of work for which there should be no delay are as follows:

1. (Result of Additional Working Hours (Overtime)).

2. 6th Floor Column Reinforcement Work Zone IPercentage of Acceleration Fee23%

3. 6th Floor Column Formwork Work Zone IPercentage of Acceleration Fee25%

4. 6th Floor Column Casting Work Zone IPercentage of Acceleration Fee 18%

(Result of Added Manpower).

5. 6th Floor Column Reinforcement Work Zone IPercentage of Acceleration Fee 6%

6. 6th Floor Column Formwork Work Zone I Percentage of Acceleration Fee 6%

7. 6th Floor Column Casting Work Zone IPercentage of Acceleration Fee 3%

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4. Conclussion

Based on the results of the comparative analysis of the time and cost of implementing the high-rise building project using the Time Cost Trade Off (TCTO) method, a case study of the 8-storey building construction project of the Faculty of Fisheries and Marine Affairs, Airlangga University, is a building construction project at Airlangga University, Surabaya, East Java. as follows:

1. Changes in the time and cost of completing the 6th Floor Column Column I work completed before the addition of working hours (overtime) of Rp. 18,349,928.74 for 7 working days with normal working hours, while the completion of the 6th Floor Column Repair work in Zone I after the addition of overtime hours is Rp. 14,204,371.95 For 7 days with the addition of 2.5 hours of overtime work on first day of work.

2. Changes in the time and cost of completing the 6th Floor Column Formwork in Zone I before the addition of working hours (overtime) of Rp. 32,326,758.60 for 10 working days with normal working hours, while the completion of the 6th Floor Column Formwork in Zone I after the addition of overtime hours of Rp.

24,178,585.64 For 10 days with the addition of 2.5 hours of overtime work on the first 2 days of work.

3. Changes in the time and cost of completing the Concrete Casting Column Floor 6 Zone I work before the addition of working hours (overtime) of Rp. 10,137,722.06 for 2 working days with normal working hours, while the completion of the 6th Floor Column Concrete Casting work in Zone I after the addition of overtime hours is Rp. 8,345,751.27 For 2 days with the addition of 2.5 hours of overtime work on 2 days first work in progress.

5. Acknowledgements

For further research, it is suggested that the research can be done in time and cost optimization and can be used as an alternative acceleration of more than one alternative depending on the scope of the project used and the problems that are happening in the project.

References

Anonim, 2004, Decree of the Minister of Manpower and Transmigration of the Republic of Indonesia No KEP. 102/MEN/VI/2004 Overtime Working Hours and Overtime Wages, Jakarta: Department of PublicWorks.

Frederika ariany. 2010, Analysis of Acceleration of Implementation by Adding Optimum Working Hours on Construction Projects, Denpasar

Ida AyuMita Yoni, I Putu DarmaWarsika, I GustiKetutSudipta. 2013. Comparison of Additional Working Time (Overtime Hours) With the Addition of Manpower To The Cost Of Project Implementation With The Time Cost Trade Off Method. Department of Civil Engineering, Faculty of Engineering, Udayana University Denpasar, Denpasar.

Kisworo, Handayani, Sunarmasto. 2017. Project Acceleration Analysis Using the Time Cost Trade Off Method With The Addition Of Overtime Working Hours And The Number Of Tools. Faculty of Engineering, Civil Engineering Study Program, SebelasMaret University, Surakarta, Surakarta

Muhamad Raa’ufAulia, MandiyoPriyo. 2015. Application of the Time Cost Trade Off Method in Construction Projects. Department of Civil Engineering, University of Muhammadiyah Yogyakarta, Yogyakarta.

Soeharto, Iman. 1999. Project Management. Erlangga. Jakarta

YusroniyaEka Putri, Hendrawan Martha Pradikta. 2013. Time Cost Trade Off Analysis on the Expansion of the Petrokimia Gresik Hospital. Department of Civil Engineering, Faculty of Civil Engineering and Planning Sepuluh Nopember Institute of Technology Surabaya, Surabaya