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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 58 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.
Parking Analysis at Banyumanik 2 General Hospital, Semarang City Khoir, Muhamad Walidul; Setiawan, Muhammad Agus; Suwandi, Putri Anggi Permata; Yudaningrum, Farida
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 2 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i2.21020

Abstract

Vehicle movement will be hampered if the available parking space is insufficient to meet the needs of the facility itselfThe method taken in making this final assignment is to use quantitative methods.the total parking revenue in the Banyumanik 2 Hospital area, Semarang City at the time of the research, based on predetermined parking planning, resulted in an estimated parking levy of Rp. 888,000.00,- per 2 hours.This planning results in a total parking pattern of 46 cars and 153 motorcycles. total income during the research was IDR 668,000.00 per 2 hours. Based on parking planning during research with 46 car lots and 153 motorbikes, there is a total planned levy of IDR 888,000.00 per 2 hours.
ANALYSIS OF ROAD SURFACE DISTRESS USING PAVEMENT CONDITION INDEX (PCI) AND BINA MARGA METHOD (Case Study: Jalan KH. Abdurahman Wahid, STA. 0+000 – STA. 1+950, Wonosobo Subdistrict) Nugroho, Galang -; Saputra, Vian Guntur; Wardani, Agustina; Budirahardjo, Slamet
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 2 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i2.25079

Abstract

Wonosobo is one of the tourist destinations in Central Java, making highways a vital element in supporting the mobility of both residents and visitors. One of the strategic roads is Jalan KH. Abdurahman Wahid, which connects the center of Wonosobo City with the Dieng Tourism Area. The surface condition of this road segment shows various types of damage that have the potential to disrupt transportation flow. This study aims to analyze the surface layer damage on Jalan KH. Abdurahman Wahid from STA. 0+000 to STA. 1+950 in Wonosobo District using two approaches: the Pavement Condition Index (PCI) method and the Bina Marga Method. The PCI method is used to evaluate the extent of damage based on visual inspection results, while the Bina Marga Method is employed to identify types of damage and determine their handling priority levels through the calculation of Priority Order (Urutan Prioritas/UP). The survey and analysis results indicate eight types of damage based on the Pavement Condition Index (PCI), with an average PCI score of 35.62 (categorized as Very Poor), and the lowest score of 20 (categorized as Serious) found in sample units 3, 10, and 13. According to the Bina Marga Method, six types of damage were identified with a Priority Order (UP) value of 6, indicating that the road segment falls into the priority category for Periodic Maintenance. It can be concluded that this road segment requires immediate treatment either in specific sections or along the entire stretch. The analysis results are expected to serve as a consideration for relevant agencies in managing road infrastructure effectively and sustainably.
Implementation of Reinforced Concrete Floor Beams and Plates in a 5-Storey Hospital Building Construction Project Rosiyani, Tissa Rahayu; Kristiawan, Agung; Suwandi, Putri Anggi Permata
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 2 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i2.22425

Abstract

Hospitals are health care institutions that provide a full range of individual health services and provide inpatient, outpatient and emergency services. The comprehensive health services referred to in this case include promotive, preventive, curative and rehabilitative.[1] The construction of the new building at PKU Muhammadiyah Blora Hospital will be the center of the physiotherapy clinic, pharmaceutical satellite, commercial area, drop off, ICU, inpatient, office. The existence of the new building is a step to improve the quality of health services for patients. The new hospital building is located to the east of the main building in the PKU Muhammadiyah Blora Hospital complex. The work observed is the work of beams and reinforced concrete floor slabs. This work has several steps of workmanship. The work on the beams and floor slabs must complete the reinforcement and formwork simultaneously first, then the casting can be done.
Analysis of the Bearing Capacity of Bore Pile Foundation on the C83 Suites Building Countruction Project in Cirebon Zuliyanto, Muhammad Dwi; Budirahardjo, Slamet; Rizani, Mohammad Debby
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 2 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i2.24614

Abstract

In soil testing using sondir in the C83 Suites building construction project in Cirebon City, the lowest soil carrying capacity was found at the S-1 point. In this study, an analysis of the carrying capacity of a bore pile with a diameter of 40 centimeters with a depth of 12 meters was carried out to obtain a comparison of calculation results using three methods, namely the LCPC (Bustamante Gianeselli) method, the Schmertmann Nottingham method, and the Direct method. The results of the calculation using the LCPC method (Bustamante Gianselli) obtained Qu= 232,001 tons, Qa = 92,800 tons. Then using the Schmertmann Nottingham method, Qu= 301,764 tons was obtained, Qa = 120,705 tons. Meanwhile, using the Direct method, it was obtained at the S-1 point with Qu= 115,158 tons, Qa = 46,063 tons.
Six Sigma-DMAIC (Define, Measure, Analyze, Improve, And Control) Analysis in Reducing Building Structural Defects (Case Study: Emirates Indonesia Cardiology Hospital Project) Mustika, Risti; Suwandi, Putri Anggi Permata; Kristiawan, Agung
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 6, No 2 (2025)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v6i2.24619

Abstract

Abstract. Construction projects often face challenges in maintaining quality, one of which is structural defects that can affect the quality and safety of the building. This study aims to analyze the level of defects in column, beam, and slab structures using the Six Sigma DMAIC method and provide solutions to improve these defects. The study was conducted on the Emirates Indonesia Cardiology Hospital Building Construction Project in Surakarta. The method used is a quantitative descriptive approach with the stages of Define, Measure, Analyze, Improve, and Control. Data were obtained through field observations, interviews, documentation, and secondary project data. The analysis results show that the average sigma level value is above 3, with the highest level in the column structure reaching 4.3 sigma for the type of concrete flow defect. The main causes of defects come from human factors, work methods, materials, and supervision. Improvement solutions are formulated using a fishbone diagram analysis approach and the assistance of NVIVO software for qualitative data analysis. This study shows that the Six Sigma DMAIC method is effective in identifying and reducing defects in concrete structure work and can be used as a quality control strategy in construction projects.Keywords: Six Sigma, DMAIC, Structural Defects, Construction Quality, NVIVO

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