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International Journal of Sustainable Building, Infrastructure and Environment
Published by Universitas PGRI Semarang
ISSN : -     EISSN : 27164829     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
International Journal of Sustainable Building, Infrastructure, and Environment (IJOSBIE) is a peer-reviewed open-access international scientific journal who aims to provide an international platform for researchers, professionals, lecturer, and educational practitioners on all topics related to sustainable building, infrastructure, and environment issues, insight by leading scholars, theorists, and practitioners worldwide. IJOSBIE papers will be published twice a year on January and July by Universitas PGRI Semarang, Jawa Tengah, Indonesia.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 53 Documents
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Analysis of Impact Contract Change Order (CCO) on Time & Cost (Case Study : Counterweight and Tano Ponggol’s Channel Project in Samosir Regency) LARASATI, ENDAH; SHOLIKIN, YUDHA ALFANDA MUHAMMAD; KRISTIAWAN, AGUNG
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 1 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i1.22423

Abstract

In many projects, changes often occur due to on-site conditions. These changes are made to ensure that the work can be carried out properly and in accordance with actual field requirements. Typically, such changes—whether additions, reductions, or replacements—lead to modifications in the contract documents. These modifications result in a Contract Change Order (CCO), which can affect several aspects of the project.This study aims to analyze the impact of Contract Change Orders (CCOs) on project duration and cost, using the Counterweight and Tano Ponggol Channel Project in Samosir Regency as a case study. The results of the study indicate an increase in project duration by 175 days. In terms of cost, the CCO led to a reduction in the counterweight work budget from IDR 25,018,491,000 to IDR 18,768,883,000.
Banger Retention Pool As Alternative Control Flood Yudaningrum, Farida; Ikhwanudin, Ikhwanudin
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 1, No 1 (2020)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v1i1.19893

Abstract

Abstract. Semarang Utara is a lowland where the water level is approximately 2m above sea level so that if the weather is bad, waves or tidal waves occur, sea water will intrude onto the land . This happens almost every day, so a barrier is needed to prevent sea water intrusion into land . Before there was handling then It would be best to create an alternative retention pool simulation in the Banger chatment area . The method used uses primary data and secondary data taken from rainfall data closest to the B anger location, namely BMKG Mariti m. Retention pool simulation results and alternative pump capacities 1 with a pond area of 3.8 ha, input volume 1,199,070 m3 and output volume 432,000 m3, alternative 2 with a pond area of 4.7 ha, input volume 1,198,800 m3 and output volume 432,000 m3, alternative 3 with extensive 5 ha pond, input volume 1,199,070 m3 and output volume 432,000 m3 .Keyword : Pool Retention, Pumps, Channels
Design approach for Revitalization of The Cultural Heritage Johar Market Area Saraswati, Ratri Septina
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 1, No 1 (2020)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v1i1.19906

Abstract

Johar Market and surrounding area as historical value suffered decaying process during the economic growth of that area. The mismanagement and uncontrolled growth caused high density of stall, break in public spaces such as roads and open spaces (aloon aloon). The Johar Market fired in 2015 Based on this tragedy, the Semarang City Government revitalized Johar Market also the surrounding area as a modern economic center that still adheres to the principle of preserving cultural heritage. Pasar Johar experienced a major fire that not only damaged the market building, but also the surrounding area. This article is part of the results of research conducted for Masterplan for the Revitalization of the Johar Cultural Heritage Area in 2016 that initiated by the Semarang City Planning Agency. Revitalization process include analysis of reorganizing the original imaginary axis between Johar and the Great Mosque Kauman. Another axis between former Regent House and  the Dutch Government. Rebuilt the open space aloon aloon as public space, and revitalizing the community kampong around the area. The benefits of this plan should be give positive impact for the public community, the merchants,  and Semarang as the valuable historical part of  the city.

Page 6 of 6 | Total Record : 53

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