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Astonjadro
Published by Universitas Ibn Khaldun Bogor
ISSN : 23024240     EISSN : 26552086     DOI : http://dx.doi.org/10.32832/astonjadro
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Astonjadro: Jurnal Rekayasa Sipil adalah jurnal ilmiah dibidang teknik sipil p-ISSN : 2302-4240 dan e-ISSN : 2655-2086. Jurnal Rekayasa Sipil Astonjadro diterbitkan untuk mengapresiasi dan memberikan informasi ilmiah bagi peneliti, dosen serta para profesional. termasuk dalamnya pengembangan model dan konsep penelitian yang mengacu secara berkesinambungan. Jurnal Astonjadro diterbitkan oleh Fakultas Teknik dan Sains Universitas Ibn Khaldun Bogor, terbit dua kali dalam satu tahun yaitu bulan Juni dan Desember.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 507 Documents
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COCONUT LEAF WASTE PROCESSING WITH BIODRYING PROCESS AS RAW MATERIAL FOR BIOMASS PELLETS IN WASTE TO ENERGY Ulhasanah, Nova; Sarwono, Ariyanti; Yosafaat, Michael; Filippi, Dennis; Sari, Mega Mutiara; Suryawan, I Wayan Koko
ASTONJADRO Vol. 11 No. 1 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i1.5853

Abstract

Coconut leaf waste is a type of waste that contains a good enough calorific value to be used as raw material for biomass pellets. The minimum standard calorific value of biomass in Indonesia according to SNI 8675:2018 is 16.05 MJ/kg. Meanwhile, based on the research results, the calorific value of coconut leaf waste has a value of 13.34 MJ/kg. The way that can be applied to increase the calorific value is by biodrying. This study aimed to determine the effectiveness of the biodrying process in processing coconut leaf waste. This study use bioactivators in the form of tempe yeast, baker's yeast, and tapai yeast. Mass loss and moisture reduction can be achieved, respectively, 8.25-17.62% and 62.4-65.6%. The calorific value can reach the minimum standard after seven days of processing with a value of 17,995-18,623 MJ/kg.
ANALYSIS OF THE EXISTING CONDITION ON PARKING BUILDING AT SULTAN HASANUDDIN INTERNATIONAL AIRPORT Rachim, Yunus; Chaerul, Muhammad; Gusty, Sri
ASTONJADRO Vol. 11 No. 1 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i1.5709

Abstract

The existing parking area at Sultan Hasanuddin Airport Makassar has 675 four-wheel parking areas, which cannot accommodate about 10 million passengers in 2013 and every year there is an increase. This study aims to analyze the characteristics of parking, especially the handling of four-wheeled vehicles in the parking building from entry, dropout, pickup, maneuver, clearance, vehicle rotation and parking slots to exiting the building. Analyze the parking area related to the level of safety and ease of use of parking buildings, especially on the semi-basement floor at Sultan Hasanuddin Airport. The method used for this research is a qualitative method, namely research that is descriptive and tends to use analysis from the data that has been collected and direct observation on the existing parking building at Sultan Hasanuddin Airport Makassar. The data collection process was carried out in two stages, namely the preliminary survey and the main survey. The results of research and observations of the existing parking building at Sultan Hasanuddin Airport, especially on the basement floor, show that the construction of a parking building that was built in terms of size, height clearance, slope, parking space layout, facilities are in accordance with the minimum standard of parking buildings, but there are some works such as sidewalks. and a stopper whose placement reduces the parking area and vehicle circulation.
FINANCING MANAGEMENT ANALYSIS OF PASIR KOPO DAM CONSTRUCTION PROJECT IN BANTEN PROVINCE Napitupulu, Reynaldo Vernandes Matheus; Rarasati, Ayomi Dita
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6066

Abstract

The strategic program of the Republic of Indonesia's Government is stated in the National Medium-Term Development Plan (RPJMN) for 2020 – 2024.One of its targetisconstruction of eighteen (18) multipurpose dams. Pasir Kopo Dam is included in the RPJMN target and its expected to provide raw water supply, irrigation water, and increase the potential for electrical energy through Micro-Hydro Power Plant (PLTMH). However, the dam construction requires a huge project costs which can't be handled solely by State Budget (APBN). There is funding gap in State Budget for financing the dam construction, so another financing alternative is needed. Public Private Partnership (PPP)is an alternative financing scheme for dam construction. PPP is influenced by economic feasibility analysis and identification of influential project risks. The selection of an investment-worthy PPP Scheme in the Pasir Kopo Dam Development Project is expected to be mutually beneficial for all parties involved in the cooperation.
IDENTIFICATION OF GREEN ARCHITECTURAL CHARACTERISTICS OF TENGANAN PEGRINGSINGAN VILLAGE, KARANGASEM, BALI Aritama, Anak Agung Ngurah; Laskara, Gede Windu; Satria, Made Wina
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6770

Abstract

Tenganan Pegringsingan village is one of most Bali Aga villages that located at Karangasem Regency, Bali. This village has a variety of vernacular buildings especially a settlement building. The settlement buildings that is a traditional houses are dwelling that still maintain pattern and shape of the building in the past. In this article will discuss about characteristics of green architecture in vernacular architecture and the genius that applied by people to response the environmental issues. Research using qualitative descriptive method by collecting data through field observations on vernacular building objects followed by a drawing of the object. The result of this research show that there four characteristics of green architecture on vernacular buildings at Tenganan village including aspects of land use, energy efficiency, water conservation, and cycles and material sources.
IMPACT OF CHANGES IN THE FUNCTION OF THE CATUSPATHA ELEMENTS ON SOCIO-ECONOMIC CONDITIONS OF UBUD TRADITIONAL VILLAGE, KELURAHAN OF UBUD Dewi, Putu Sri Agastina; Saraswati, Anak Agung Ayu Oka; Agusintadewi, Ni Ketut
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6205

Abstract

In its literal sense, catuspatha contains sacred value, function, and its own meaning. In the context of Balinese culture catuspatha as the centre of a kingdom contains four constructuve elements that are adjusted to the desa kala, patra, in the respective regions. Meanwhile in the context of Hinduism with the changes within the system it is not possible tha in this era catuspatha will undergo functional change. The purpose of this research is to know the impact of socio-economic changes in the functions of the catuspatha elements of Ubud traditional village. To achieve this goal it is done with observations and interviews related to the catuspatha element forming. Also cross-check based on the literature and results of previous research. The study used qualitative-rationalistic methods with interactive data models miles and Huberman to discuss spatial changes in the past and present. The results derived from this research are the elements of catuspatha has undergone a change both in function and physically in the last few years because it adjusts the region and needs of the community and so that the land function is the result of positive and negative impacts in terms of socio-economic.
EVALUATION OF DRAINAGE NETWORK ON GAYA MOTOR ROAD OF SUNGAI BAMBU SUB-DISTRICT TANJUNG PRIOK Riavi, Rama; Heryansyah, Arien; Chayati, Nurul
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.3240

Abstract

Drainage is a way to dispose of excess water that is not in an area. In other words, this drainage also works in controlling checked areas, puddles, and also flooding. Flooding is an event when excessive water flows overland. North Jakarta is an example of the city area in Indonesia that often experiences such flooding events with a repeated frequency every year. With low topographic conditions and also located in the northern coastal area of Java Island, resulting in a large flow of water through North Jakarta. One of the areas that always experiences flooding is Jalan Gaya Motor, Sungai Bambu Village Tanjung Priok sub-district. Flooding in this area caused major losses in economic mobility in North Jakarta because the road is the main access to an s considerable automotive factory area in the Jakarta area. Drainage systems in the area need to be designed to accommodate water discharge especially when it is raining. Drainage capacity needs to be accounted for to accommodate existing water discharge. From the results of the analysis obtained the amount of channel capacity value of 0.46 m3/s, then bulk discharge flood plan in the period of-2 Years 22.95 m3/s, for 5 Years 34.26 m3/s, for 10 Years 41.75 m3/s. With the flooded value of the plan, it was concluded that the capacity of the existing channel could not accommodate rain at the peak discharge of the plan, so the area always experienced flood events. Also, drainage channels in the area were affected by the high rise in water levels due to the influence of tides with an average increase of 0.6 m with an average elevation of water level of 0.607.
ANALYSIS OF HEAVY METAL GEOCHEMISTRY BEHAVIOR ON SOIL IN THE RIVER OF LAKE MATANO AREA, SOUTH SULAWESI Iswandi, Adnan; Irfan, Ulva Ria; Alimuddin, Ilham
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6573

Abstract

Geologically, the Lake Matano area is an area of laterite deposits, where in these deposits there are heavy metal geochemical elements that can have a negative impact on the environment. This research was conducted in three rivers that surround the area and empties into Lake Matano, with the aim of analyzing the geochemical behavior of heavy metals in soil. The method used includes a literature study and observing the results of previous studies and testing the content of heavy metals with the AAS tool. The results showed the behavior of heavy metals in the soil around Lake Matano in the three rivers where metals that exceeded the critical number were Fe, Mn, Cu, Co, Ni. and which is still below the critical number limit is Cr metal. The presence of heavy metals in the soil at the research site is caused by the results of the disposal of waste from mining activities and anthropogenic activities where the end of the disposal goes directly to the ground so that the heavy metals contained in the disposal will enter the soil and experience contamination in nature so that the existing organic compounds have undergone degradation.
IMPLICATION OF SPATIAL PATTERN OF HOUSING DISTRIBUTION TO THE EXISTENCE OF AGRICULTURAL LAND IN TABANAN URBAN AREA Noorwahyuni, Afriyanti; Dwijendra, Ngakan Ketut Acwin; Putra, I Dewa Gede Agung Diasana
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6447

Abstract

The Tabanan Urban Area functions as a buffer area (counter magnet) around the Sarbagita Metropolitan core area, namely Denpasar and Kuta. Regional development is directed as a center for government services, trade and services as well as urban settlements. The Tabanan Urban Area is currently the target of expansion of urban housing development, especially those carried out by developers. Most housing developments occur on agricultural land that functions as a buffer for the Balinese 'subak' cultural order. This study aims to see the implications of the spatial pattern of housing distribution on the existence of agricultural land in the Tabanan Urban Area. This study uses a descriptive qualitative approach with a historical spatial tracking method. Periodization of housing distribution pattern is done by map overlay analysis and nearest neighbor analysis. The findings of this study indicate that the spatial distribution pattern of housing occurs randomly and spreads with a leap-frog development pattern. This form was found to be the most offensive dispersal pattern in reducing existing agricultural land. The implication of this housing distribution pattern on the rate of land conversion was found to reach 40.39 ha or about 33.25% of the Tabanan urban area. Subak, as a subsystem of Balinese cosmic spatial planning, has experienced decadence not only at the physical level, but extends to the systemic socio-religious dimension. The intrusive pattern of Balinese culture and culture occurs due to high land use discrepancies. This is especially true for the three subak subsystems, namely parhayangan-pawongan-palemahan.
FINANCIAL FEASIBILITY STUDY OF GREEN BUILDING INVESTMENT GRAHA CIMB NIAGA JAKARTA BUILDING WITH A LIFE CYCLE COST ANALYSIS APPROACH Purnomo, Hardiyanto; Tenriajeng, Andi Tenrisukki
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6135

Abstract

Global warming and climate change are undeniable global challenges. A phenomenon that cannot be underestimated. Temperature uncertainty, environmental damage, natural disasters to diseases that may arise due to global warming can be catastrophic. Green building is here to answer these challenges. Energy consumption in buildings is quite large and has an impact. The building aspect accounts for 35% and 38% of global energy use and carbon emissions, respectively. The amount of greenhouse gases is projected to reach 42.4 billion tons by 2035. The large initial cost comparison and ignorance of the benefits of green building causes investors to be reluctant to apply the Green Building concept. There is a need for an analysis of the life cycle cost (LCC) in the Green Building investment of the CIMB Niaga Graha Building so that the benefits of the Green Building concept are known. Graha CIMB Niaga is the first existing building in Indonesia to have a Green Building predicate with a Platinum level by BCAI Singapore. LCC analysis is expressed by Net Present Value of Savings (NPV), Savings Investment Ratio (SIR), Discounted Payback Period (DPP), Adjusted Internal Rate of Return (AIRR) and Sensitivity Analysis. Environmental gains are also expressed by NPV per 1 Greenhouse Gas (GHG) savings. The results showed that the investment was profitable and feasible. The profit is shown by the NPV parameter of Rp. 8,930,649,864 > 0, SIR of 2.69 > 1, DPP of 4.4 < 20, and AIRR of 43.88% greater than MARR of 11.72%. Investment is still profitable if the rate of increase in investment is below 163.44% or a decrease in electricity savings is below 61.58%. The results of the study also show that the investment is profitable and feasible in terms of environmental impact of Rp.410.039 per 1 GHG Savings.
HIGH STRENGTH CONCRETE USING FLY ASH A CEMENT AND FINE AGGREGATE Bachtiar, Erniati; Setiawan, Arman; Musahir, Fajar
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6725

Abstract

At the moment, the cost of concrete is quickly increasing as the cost of cement and aggregates continues to rise. As a result, a replacement for fine aggregate as well as a substitute for cement is required to decrease the cost of concrete production. In general, concrete is composed of cement as a base material that is workable and satisfies specified performance, durability, and strength criteria, aggregate, and water. In the field of engineering constructions, reinforced high-strength concrete has a significant impact on development. Apart from its exceptional strength, this kind of concrete must exhibit workability, minimal shrinkage, release characteristics, and self-compaction. The authors of this research performed a literature review to explore high-quality concrete made using fly ash as a replacement for cement and fine particles. Fly Ash is a waste product or byproduct of the coal-fired power plant's combustion process. Fresh concrete made using fly ash as cement and fine aggregate has an average slump value of 90-200 mm. The compressive strength of concrete made with fly ash ranges between 35 and 60 MPa after a 28-day curing period. The optimal percentage of fly ash in high-strength concrete is between 10% and 30%.

Page 17 of 51 | Total Record : 507

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