International Journal of Engineering Research and Advanced Technology (IJERAT) E-ISSN : 2454-6135 DOI: 10.31695/IJERAT.2021.3695 Volume.7, Issue 3 March -2021 www.ijerat.com Page 1 Licensed Under Creative Commons Attribution CC BY Key Success Factor Analysis in Application of Manual Pert Method in Rail Road Construction 1 Yogi Argiansyah, Budi Susetyo 2 & Fuad Fahmi 3 1-3 Department of Civil Engineering Mercu Buana University Jakarta, Indonesia _____________________________________________________________________________________________________ ABSTRACT Project success is the ultimate goal of every project. The difference in critical success factors for a project is because each project has different factors of influence. Therefore, each party involved must have a certain strategy for the success of the project, namely by knowing the factors that most influence the success (success) of the construction implementation. Methodology This research was conducted using a qualitative descriptive research method by explaining variables and processing the data at the stage of identification and factor analysis. Distributed to 40 respondents who are involved in railroad works. The purpose of this study is to describe a number of variables with respect to the problem and the unit studied between the problems being tested, and to determine the success factors. Distributed to 40 respondents who are involved in railroad works. The purpose of this study is to describe a number of variables with respect to the problem and the unit studied between the problems being tested, and to determine the success factors. And the manual method pert (X 2 ) with 14 factors consists of the distribution of activity duration, the effect of activity duration, the work must be faster, the possibility of sharing activity duration, scheduling arrangements, the final goal of project scheduling, scheduling activities that can be completed on time, break down or start. Project into activities, determine the estimated network time, network diagrams are drawn, can combine project activities, calculations can be developed manually, a higher similarity in the scheduled network, the resulting tool is accurate but not complicated. These factors, namely the Implementation Method (X 1 ) and the Manual Method Pert (X 2 ) affect the time dependent variable (Y). Keywords: PERT, M- Pert , Rail Road Construction, Time Delay. ________________________________________________________________________________________________________ 1. INTRODUCTION The Indonesian government is targeting the construction of a new railway network by 2030 to reach 13,000 km. Currently, Indonesia only has 6,000 km of railway lines. This means that within 11 years, Indonesia will build 7,000 new railroads. As a mode of land transportation in the field implementation of railroad construction projects in several countries in the world, there are delays resulting in time delays and Flyvjberg's analysis found that railroad construction projects experience cost overruns by 28 percent, bridge and tunnel projects by 34 percent, and road projects by 21 percent. Matthews's 2016 research also explains the delay in construction projects in several European, Asian and African countries with the percentage of delays ranging from 10% to 130%. Average time and cost overruns in a sample of 145 public sector construction projects in 8 countries. Time management is important in any construction project. Without proper time management, many problems will occur such as overtime or time overrun. Some researchers describe time overrun as delay and some of them describe time overrun as the effect of construction delay, whatever it is, delay is the most common problem in the construction industry worldwide (Memon, Rahman, Ismail, & Zainun, 2014). According to Taufan (2016), delay in project time is an event that always occurs in every project. In this case, especially for Service Providers, delays in the project will result in a delay which will reduce the profit that has been targeted by the contractor in charge of the project. So that the target of the planned development program is not as expected. Time delays can also be caused by the influence of the surrounding environment, unpreparedness of the land as a place to be used as a project location, poor project management implemented and also mistakes in human resources. Based on the aforementioned problems, this research is conducted to see what factors can influence the time delay on railroad construction work. So it is hoped that