Article Per Year (5 Year)
p-Index From 2020 - 2025
0.817
P-Index
This Author published in this journals
All Journal Devotion: Journal of Research and Community Service International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) Jurnal Teknik Indonesia
Wulandari , Esti
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Transportation

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
ANALYSIS OF PROJECT ENFORCEMENT DELAYS WITH THE EARNED VALUE METHOD: (Case study: Office of Bahtera Elang Perak Indonesia Surabaya) Nailufar, Linda; Witjaksana, Budi; Wulandari , Esti
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 3 No. 3 (2024): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v3i3.1167

Abstract

The construction of the Bahtera Elang Perak Indonesia (BEPI) Office is one of the ongoing projects in Surabaya City consisting of 8 floors with an area of 1,081 m² and a contract value of Rp. 13,908,226,157.00. The Bahtera Elang Perak Indonesia office construction project is planned to last for 43 weeks. In reality, when the piling work is in progress, there are several changes so that there is a need for rescheduling or re-schedulling. The length of implementation time became 54 weeks. The current condition of the progress of the construction of the Bahtera Elang Perak Indonesia Surabaya office is in week 37 at 35.67% while the planned progress is 43.619% so that there is a difference of -7.948%. In order to address this issue, an evaluation of the project's cost and time efficiency during implementation is conducted utilizing the Earned Value Method. This strategy seeks to assess the project's performance in terms of both cost and time. The analysis conducted in week 41 revealed that the performance of the project, in terms of cost, was below expectations with a CPI value of 0.945, indicating that the actual costs exceeded the budgeted costs. Additionally, the CV value of Rp. -381,606.94 further confirmed this negative deviation. In terms of time, the project also experienced delays, as indicated by an SPI value of 0.758, which is less than 1. The SV value of Rp. -2,082,524,745 further highlighted this delay, indicating that the completed work packages were fewer than planned.
Analysis of Satellite Rain Data UsageOn The Rationalization Activities of The Rain Post Network (Case Study: Rationalization of The Jelai Watershed Rain Post Network) Susanto, Ari; Oetomo, Wateno; Wulandari , Esti
Devotion : Journal of Research and Community Service Vol. 3 No. 14 (2022): Special Issue
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/dev.v3i14.327

Abstract

An alternative solution to the availability of inadequate rain data as hydrological data input is with the help of Global Precipitation Measurement (GPM) satellite rainfall data using remote sensing technology (satellite). The purpose of this study was to find correlations and corrections of data and validate GPM satellite data with rainfall data at rain stations and observation data in the Jelai watershed. The corrected GP M rain data validation results in Nash-Sutcliffe Efficiency (NSE), Root Mean Squared Error (RMSE), Correlation Coefficient (R), and Relative Error (KR). The validation results resulted in NSE values of 0.33, RMSE 48.54, Correlation Coefficient (R) of 0.75, and Relative Error of 0.19 for 2019 and yielded NSE values of -0.14, RMSE 100.24, Correlation Coefficient (R) of -0.36, and Relative Error of 0.23 for 2020. The overall analysis shows that GPM data can be used as an alternative to rain data if in a watershed there is a small number of rain posts that do not meet the WMO criteria. As a suggestion for further research, it is necessary to calibrate and validate by distinguishing between rain data in wet years and dry years
Efficiency Analysis Of Material Management On The Construction Contract Value Of School Buildings In Surabaya Nurdiyanton, Nurdiyanton; Wulandari , Esti; Purnama, Jaka
Jurnal Teknik Indonesia Vol. 4 No. 4 (2025): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v3i4.771

Abstract

The development and competition in the world of contractors is very tight, for that a real breakthrough is needed in budget efficiency, namely by managing it well. To realize the perfection and optimization of the company is done with three events, namely time management, cost management and material management. In this case, it is focused on material management, how much influence it has on the performance of the implementation of work in the construction of school buildings in Surabaya. This study was conducted on the construction of buildings, especially school buildings, because school buildings are classified as unique, namely in general the design and structure of the building are typical, starting from the first floor and so on, this can be done by saving materials so that spending can be reduced. The following regression conclusions are obtained: Y1 = 1,360+0,187 +0,425 -0,124 +0,402 -0,190 -0,097 , where the constant value is 1.360 and the variables , , have a positive (+) value, meaning that if the variable is carried out, it will have a positive impact of the value inherent in the equation, conversely , , have a negative (-) value, meaning that if the variable is not carried out, it will have a negative impact on performance of the value inherent in the variable. Thus, the value of efficiency obtained in material management against the contract value is 3% to 5% of the contract value. This can be said to be quite large considering the contract value of each project varies, it will not be felt if the contract value is small.
Analysis of Clean Water Demand in Watudiran Village, Sikka Regency Gode, Dicky; Nugroho, Laksono Djoko; Wulandari , Esti
Jurnal Teknik Indonesia Vol. 4 No. 4 (2025): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v3i4.792

Abstract

Watudiran Village in Sikka Regency is a semi-arid area experiencing limited access to clean water due to the absence of an adequate piped water network. To develop an effective and sustainable clean water pipeline project, various baseline data are needed to support technical planning and guide appropriate investment decisions. This study aims to analyze clean water demand based on projected population growth and domestic water consumption standards. The method involves population projection using a geometric growth model and water demand estimation based on government standards, assuming a daily per capita consumption of 60 liters per person. The analysis covers the period from 2024 to 2039. The results show that the population of Watudiran Village is projected to increase from 1,871 people in 2024 to 2,559 people in 2039. Based on this assumption, the average daily water demand will reach 153,522 liters by the end of the projection period. The peak flow is estimated at 3.56 liters per second, using a peak factor of 2.0. These findings provide a quantitative foundation for designing the village’s clean water distribution system and serve as a key reference for rural infrastructure development planning.
Co-Authors ARI SUSANTO Budi Witjaksana, Budi Gode, Dicky Jaka Purnama Laksono Djoko Nugroho Nailufar, Linda Nurdiyanton, Nurdiyanton Oetomo, Wateno