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Gedung Ir. Prijono Hardjosentono Universitas Ibn Khaldun Bogor Jl. KH. Sholeh Iskandar KM 2 Kedung Badak Tanah Sareal Kota Bogor 16161
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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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Factors Influencing Cost Performance Improvement on the Concept Of Green Retrofitting High-Rise Offices Using Structural Equationg Modelling-Part Least Square (SEM-PLS) Wahyudi, Muhamad Aziz; Husin, Albert Eddy; Amalia, Nur
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9000

Abstract

The increase in energy consumption in the operation of the building construction industry globally has increased by a percentage of 35%, so that this increase can lead to an increase in carbon emissions which was originally at a percentage of 28% to 38%. The concepts of Green Retrofitting, Dynamic Systems and Value Engineering can be researched based on the influence on improving the cost performance of Green Retrofitting in high-rise (existing) office buildings and connected with the Structural Equation Modelling-Partial Least Square (SEM-PLS) analysis model. PLS-SEM is very appropriate to be used in research aimed at developing theories. The results of this study show that in the application of the Green Retrofitting concept in high-rise office buildings using Dynamic Systems and Value Engineering has a significant effect on improving the cost performance of Green Retrofitting and get the most influential factors are Top Management Support, Energy Efficiency, Water Efficiency, Indoor Air Quality, Retrofitting Planning, Retrofitting Initial Costs, Bill Of Quantity,  Dynamic System Model Generation, Alternative Material Selection, and Material Cost Reduction
Analysis of the Dominant Internal and External Factors in the Performance of Human Resources in the Precast Company Rachmawati, Dyah; Wijatmiko, Indradi; Devia, Yatnanta Padma
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9089

Abstract

The performance of human resources (HR) in a company is one of the determinants of the company's condition in the industry. This can be analyzed based on the dominant factors that support or become the foundation of the company. This study reviews the dominant internal and external factors in PT.BEP company. The research method used is descriptive qualitative with analysis using IPA, Pareto Chart, IFAS-EFAS Matrix, and SWOT. The results showed that internal factors were dominated by ability factors with a processing value of 13.49%, while external factors were dominated by reward factors with a percentage of 16.42%. The results of the SWOT analysis recommend that the strategy that should be implemented is Strength-Opportunity (SO) with IFAS EFAS results in quadrant I with coordinates 1.67;2.34. then PT. BEP is in an advantageous situation because it has good strengths and opportunities and can be optimized by minimizing all weaknesses and threats.
Reinvigorating a Traditional Balinese House: Managing Tourist Facilities and Maintaining Architectural Traditions Adhika, I Made; Putra, I Dewa Gede Agung Diasana
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9222

Abstract

Traditional Balinese houses in tourist areas are transforming, whereas, on the other hand, Balinese have tried to maintain the identity of the traditional houses to attract tourists. This transformation is a paradoxical phenomenon in which people have transformed their houses to gain economic benefits from tourism. The absence of an appropriate transformation model, which can be used as a guide for the community in utilizing houses in tourism economic activities, allows for the filtration of the tourism function into traditional spatial and cultural spaces. Therefore, this study is urgent to be carried out to maintain the potential of the house as a cultural tourist attraction while at the same time gaining economic benefits. To achieve this goal, a tiered method was developed starting from baseline data collection, an inventory of the texture and character of changes in traditional houses. A more in-depth exploration of traditional house changes using samples based on stratified random sampling and interviews will reveal and create traditional house change innovations. It is continued with the creation of design innovations in the traditional house transformation model. Finally, an analysis was carried out on creating design innovations to transform traditional houses into tourist facilities without abandoning the meaning and values of a traditional house.
The Effect of Variation in the Length of Water Hyacinth Fiber Twisted on Split Tensile Strength High-Performance Fiber Concrete Verdian, Riki; Muin, Resmi Bestari
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9346

Abstract

One of the weaknesses of concrete is that it has a very small tensile strength, which makes it brittle. Normal concrete has a tensile strength of 9-15% of its compressive strength. To increase the tensile strength of concrete, it is necessary to add fiber. The types of fibers that can be used in concrete can be either natural fibers or non-natural fibers. Various alternatives can be made as an effort to improve the quality of concrete. One of them is by utilizing weeds or weeds into useful materials. One of these disturbing plants is the water hyacinth plant, which is quite abundant and grows very fast. Water hyacinth plants consist of stems, leaf petals, which are rich in fiber, which allows it to be used as an alternative additive in concrete mixtures for construction. The purpose of this research is to try to apply water hyacinth fiber (SEG) 0,75% in high performance concrete (HPC) to determine the effect of the ratio of water hyacinth fiber twisted length on the compressive strength and split tensile strength of high performance concrete with several variants fiber lengths of 2 cm, 1,5 cm and 1 cm. The results showed that the decrease in the compressive strength of water hyacinth fiber-rolled concrete for variations of 2 cm, 1,5 cm and 1 cm were respectively 10,76%, 14,16%, and 18,76% of the reference concrete compressive strength of 45,42 MPa and the highest splitting tensile strength of concrete is in the 1 cm fiber length variation of 3,65 MPa which is 9.89% of the concrete compressive strength of 36,90 MPa. The modulus value decreases with the variation in the length of the fiber strand.
Asphalt 60/70 Penetration Analysis of AC/BC Mixture With the Addition of Ethylene Vinyl Acetate (EVA) As Asphalt Raw Material Siregar, Zulkifli; Asfiati, Sri; Gultom, Mhd. Husin
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9424

Abstract

This study was conducted to determine how much influence EVA (Ethylene Vinyl Acetate) added to Laston AC-BC has on Marshall characteristic values. The Marshall test carried out will produce stability values at the optimum asphalt conditions that meet the 2018 Highways specifications. The stability value will be used to analyze changes in the characteristics of the Laston AC-BC (Asphalt Concrate – Binder Course) mixture after adding a mixture of EVA (Ethylene Vinyl Acetate) . To determine an aggregate gradation in the AC-BC mixed layer, coarse aggregate is used in the form of crushed stone with a maximum size of ” while for fine aggregate it is a mixture of crushed stone, stone ash and sand. The additive or modifier used is EVA (Ethylene Vinyl Acetate) polymer. Next, to obtain good asphalt concrete, the gradation of the aggregate must meet the general specifications of Bina Marga 2018 which have been determined through SNI-ASTM-C136-2012. In making the test object, ± 1200 gram of aggregate and asphalt are needed so that the specified height of the test object will be produced. Through the analysis of the aggregate sieve, the weight of the aggregate required for the test object can be calculated. Modification of asphalt with EVA aims to determine the stiffness and properties of asphalt in resisting loading with a certain penetration value so as to produce a Penetration Index value which will affect the characteristics of asphalt against weather changes. Research and knowledge related to the addition of a mixture of EVA (Ethylene Vinyl Acetate) to asphalt can be further developed so that it can be implemented on types of road pavements with higher traffic density conditions.
Analysis of the Selection of Land Transportation Modes in Serang City Fahrizal, Irfan; Dwiatmoko, Hermanto
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.9781

Abstract

The role of urban transportation is vast in supporting the mobility of city residents because, after all, urban people need city transportation, and most community groups depend on city transportation to meet their mobility needs. Along with the development of the era of online application-based transit, they are becoming newcomers as a service that makes it easier for people to carry out travel mobility, such as online motorcycle taxis. This study aims to determine the mode selection model between city transportation and online motorcycle in Serang City. The research approach is quantitative, with primary data sources obtained from distributing closed questionnaires to 43 city transportation travelers and 57 respondents to online motorcycle drivers. The data analysis used is the difference binomial logit model to determine the probability model of the traveler in choosing the mode. The results of modeling the choice of the way with the difference in binomial logit results in city transportation having the opportunity/probability of being chosen by travelers in Serang City at 45.64% while the probability/chance of selecting an online motorcycle is 54.36%.
Environmental Valuation of Raya Lati Petangis Park Using the Travel Cost Method in Paser District, East Kalimantan Anshary, Syafruddin; Munawir, Abdillah; Nurhasanah, Nurhasanah
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.12261

Abstract

The Lati Petangis Forest Park is a forest area that was previously a mining concession area of PT BHP Kendilo Coal which has ended its operations and was later developed into a tourism area. The purpose of this study was to determine the aspects that influence the level of visits to the Lati Petangis Grand Forest Park, Paser Regency, East Kalimantan and to analyze the Willingness to Pay (WTP) value of the Lati Petangis Grand Forest Park. The method used is the Travel Cost Method and Consumer Surplus. The results of the calculation of the environmental valuation of Nature Tourism Forest Park Raya Lati Petangis, Batu Engau District, Paser Regency, East Kalimantan using the Travel Cost Method can be concluded that the average WTP value is known to be Rp. 247,959, so that the economic value of the Lati Petangis Grand Forest Park is Rp. Rp. 725,614,497.06 per year, the consumer surplus value is Rp. Rp. 1,820,671,342.3. From the regression analysis it was found that the independent variables in the form of travel costs (X1), Age (X2), Education (X3), Income Level (X4), Cleanliness Quality (X5), and Visitor Satisfaction Level (X6) have a significant effect on the economic value of Tahura Lati Petangis which can be characterized by the high number of visits.  
Crop Insurance Model Based on Maximum Daily Rainfall and Maximum Daily Temperature Index Muna, Siti Umamah Naili
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.13207

Abstract

A loss insurance model of risk for agricultural commodities that considers maximum daily rainfall and maximum daily temperature is introduced in this paper. This model requires bivariate distribution of maximum daily rainfall and maximum daily temperature in a specific region. Characteristics of particular agricultural commodity is also needed in the region where the two variables are being insured. The bivariate distribution and commodity characteristics are combined to obtain exit. exit is a benchmark value that causes the total crop failure and gives full benefit claim to policyholder. The case study was demonstrated by using data on maximum daily rainfall and temperature in Dramaga Bogor from September to December during 38 years (1984-2021) . Data was collected from Jawa Barat Climatology Station. Frank Copula is better to represent the bivariate distribution of data. Furthermore, two scenarios had given the premiums as IDR 2 482 925 per hectare and IDR 1 495 660 per hectare. This crop insurance model based on maximum daily rainfall and maximum daily temperature index could be the basis for the next developing of crop insurance model.
Willingness to Pay Farmers on Turmeric Extract to Reduce Health Impacts Due to Pesticide Muslim, Azhari; Dadang, Dadang; Indrasti, Nastiti Siswi; Syaukat, Yusman
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pesticide exposure has been shown to cause various diseases such as acute neurotoxicity, cardiovascular disease, cancer, allergies and nervous disorders. Economic assessment of the health costs of using pesticides is necessary to design effective policies and reduce poisoning in farming populations The herbal medicines used have the efficacy of preventing and treating chronic non-communicable diseases. The most widely consumed herbal medicine is turmeric. This study aimed to analyze the willingness to pay value of turmeric extract and the factors that influence the willingness to pay of turmeric extract. All shallot farmers have turmeric extract WTP as a herbal medicine to reduce the risk of pesticide poisoning. The average WTP of turmeric extract reaches IDR 625,777 per year.
Literature Study of the Sustainability Model of Transportation Facilities and Infrastructure in the Management of Public Transportation with the Concept of Inter-Regional Cooperation (Case in the City and District of Bogor) Syaiful, Syaiful; Pratikso, Pratikso; Wiwoho Mudjanarko, Sri
ASTONJADRO Vol. 12 No. 2 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i2.14114

Abstract

Traffic in the city of Bogor is relatively high. With this level of density, the city of Bogor is classified as the second most congested city after DKI Jakarta. Achieving the process of transporting passengers and goods as optimally as possible in a certain space and time taking into account several factors such as safety, comfort, smoothness, time efficiency and costs according to these needs. The balance and needs of transportation facilities and infrastructure in achieving its goals is the real movement of each user. The main objective of this study is to formulate a model for the sustainability of transportation facilities and infrastructure in the management of public transport with the concept of inter-regional cooperation. The originality/novelty in the research is a) the handling of the model of sustainability of transportation facilities and public transport transportation infrastructure in the two regions of Bogor regency and Bogor city, b) the sustainability of the public transport management model with the concept of inter-regional cooperation, namely Bogor regency and Bogor city in reducing congestion between the two buffer city. The methods used are survey methods, interviews and studies of expert opinions. This concept is called MODEL SUSTAIN-SARPRASKOKABO_2023. By referring to this initial concept, it is hoped that a balanced and sustainable traffic pattern in Indonesia will soon be realized.

Page 27 of 51 | Total Record : 507

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