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Articles 44 Documents
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COMPARISON OF CONCRETE AND MODULAR STORAGE PONDS FOR FLOOD CONTROL (CASE STUDY CATCHMENT AREA OF TAMAN RATU CHANNEL) Thalia Margaretha; Elly Kusumawati Budirahardjo; Ryobi Irfanto
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p03

Abstract

Taman Ratu Housing Area which is included in the drainage area of the Taman Ratu connecting channel is almost always flooded with a height variation of 30-60 cm at the peak of the rainy season. One solution of the flood control system according to the principle of sustainable drainage is the utilization of storage ponds. The availability of land, which is dominated by residential areas, motivates the placement of below ground pools with 2 different models, known as concrete pond and modulars. The placement of below ground ponds is also intended to fulfill public facilities into green open space areas. Therefore, this study was conducted to determine the comparison of cost budget plans related to the dimensions of the planned pond. The method that will be used through three stages of research includes hydrological analysis to calculate planned rainfall and planned runoff discharge, followed by hydraulic analysis for the design on the total land area of the development plan of 2015.88 m2, the maximum storage volume obtained with dimensions of 45×45×1.5 m is 421.84 m3 for a 5-year rain return period. The preparation of work unit prices refers to the Minister of PUPR Regulation No.8 of 2023 so that a budget value of Rp 6,256,025,595.86 for concrete pond and Rp 10,518,367,732.62 for modular pond is obtained.
COMPARATIVE ANALYSIS OF THE WEIGHT AND COSTS OF BUILDING A LIVING HOUSE USING CONVENTIONAL AND FERROCEMENT METHODS IN THE CITY OF PALANGKA RAYA Rudi Waluyo; Nor Aidi Firdaus; Veronika Happy Puspasari
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p04

Abstract

One of the latest engineering innovations, namely the ferrocement method for housing, supports the implementation of the Extreme Poverty Alleviation Program under the leadership of the President of the Republic of Indonesia. This is realized through Presidential Instruction Number 4 of 2022 which emphasizes the importance of the Ministry of Public Works and Public Housing in accelerating the eradication of extreme poverty. One step is to repair uninhabitable into habitable houses, utilizing ferrocement technology to meet structural resilience indicators in improving housing quality. This research aims to measure the weight of the house and analyze the difference cost of a livable house using the conventional method and the type 45 ferrocement method. The research was carried out from January to August 2023. The research location is in Palangka Raya City. The descriptive analysis will be used to determine the weight of the house and the planned budget for the cost of a habitable house using conventional and the ferrocement method. The results are that the weight of a type 45 habitable house using the conventional method is 87,220.56 kg and the weight of a type 45 habitable house using the ferrocement method is 82,306.52 kg. This shows a weight difference of 5,897.03 kg or 6 % and the cost of a type 45 habitable house using the conventional method is IDR. 322,696,812.10 and the cost of a habitable house type 45 using the ferrocement method is Rp. 272,539,766.29 shows a cost difference of Rp. 50,157,045.81 or amount 16 %.
OPTIMIZING PROJECT SCHEDULING USING CPM AND PERT METHODS (CASE STUDY: PEJAMBON 8-STOREY FLAT, CENTRAL JAKARTA) Dewi Fauzah; Rafiq Setyawan; Anasya Arsita Laksmi; Sigit Adi Soebakti
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p02

Abstract

Pejambon 8 Storey-Flat Construction Project is one of the annual work programs through the allocation of Government Islamic Securities (SBSN) funding for the 2023 Ministry of Finance of the Republic of Indonesia. In this research, the CPM and PERT planning methods were used to implement project time management and increase effectiveness, by making schedules empirically. The aim of applying the CPM and PERT methods is to compare expectations with actual progress and avoid delays in critical path activities so that it can shorten the project period by considering costs. This research used the PERT and CPM method approach in evaluating projects. This method begins with compiling a project network diagram and collecting information related to time variations that can occur on projects in the field. Some of the results of the processed data produced are information related to the critical path of the project, probability of project scheduling, and variations in operational costs according to the total duration of work. The data required in this research include the physical progress report of the project, Project Implementation Schedule, Curve S, and RAB.
ANALYSIS OF SOIL BEARING CAPACITY AND FOUNDATION SETTLEMENT IN THE CONSTRUCTION OF GUPUSMU PUSPALAD III JAKARTA Anasya Arsita Laksmi; Arya Maulana Kampai; Harjasa Jonathan; Nina Purwanti; Deakonius Silalahi; Dewa Ramadhan Astama Putra; Dewi Fauzah; Abdul Hadi Adriansyah; Abigail Christy; Andreas Robert Panogu Sitorus; Sigit Adi Soebekti
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p05

Abstract

The ammunition center warehouse and military equipment center are strategically important for Army operations. In the design, an analysis of soil bearing capacity and foundation settlement is required to maximize the structural load of the ammunition center building. Based on this, this study aims to analyze the soil-bearing capacity and potential deformation of the foundation in response to the structural loads applied to the construction of the Ammunition Center Warehouse and Army Equipment Center III in Jakarta. The investigation involved six lightweight sondir points, each with a capacity of 2.5 tons, to obtain a conus value of 250 kg/cm2. The information obtained from the sondir test was used to determine the bearing capacity of the soil and the amount of foundation settlement that might occur. Based on the analysis and calculations, a shallow foundation, namely a 2-meter-deep footing, was selected. The allowable soil bearing capacity is 1.18 kg/cm2, and the foundation settlement at P1 is about 2.8 cm and 1.3 cm at P2. This research is expected to be the basis for designing ammunition warehouse foundations in military institutions.
CONTRACTOR’S PERSPECTIVE ON EXECUTION METHOD IMPACT TO COST OVERRUN IN BALI’S BUILDING CONSTRUCTION Ni Made Rika Diandra Saraswati; I Putu Artama Wiguna
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p02

Abstract

Cost overruns is a common issue frequently encountered in the construction sector in Indonesia. Improper management of execution methods and project resources (equipment, materials, and labor) used can lead to cost overrun. Focusing on building construction projects in Bali from the contractor's perspective, this research employed SEM-LISREL to assess the relationship between execution methods, equipment, materials, labor, and cost overruns. The model development process involved identifying measurement items derived from existing literature regarding execution methods, equipment, materials, labor, and cost overruns. Through a questionnaire distributed to 200 contractor employees. The results show a significant impact of execution methods on cost overruns, mainly through intermediary variables such as materials and labor. In contrast, equipment has no significant influence in either the mediation or direct relationship with cost overruns. This study highlights the significant impact of materials, quantified at 4.63, on cost overruns in construction projects. Labor is found to contribute to cost overrun in construction endeavors by 2.36. Moreover, the analysis underscores that the cost overrun can be linked to various indicators associated with encompassing material delivery, material availability, manipulation of material, as well as labor productivity and quantity. By considering these aspects and implementing appropriate strategies, contractors can optimize resource efficiency, control project costs, and ultimately enhance their competitiveness and profitability in the construction industry.
MANUFACTURING FOAMED CONCRETE AS AN ALTERNATIVE MATERIAL TO REPLACE EMAS (ENGINEERED MATERIALS ARRESTING SYSTEM) Made Sukrawa; Ida Bagus Rai Widiarsa; I Nyoman Sucika
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p01

Abstract

The Engineered Material Arresting System (EMAS) serves as a solution to overrun aircraft, particularly on runways with Runway End Safety Area (RESA), thereby enhancing aviation safety. This study involves the fabrication and testing of foam concrete using local materials, including cement, fly ash, and foam, both with and without the addition of fibers. The targetdensity is set at 600 kg/m³. Materials utilized include Gresik PCC cement, Paiton fly ash, AKS brand foaming agent for foam production, and polypropylene fibers (Fosroc PPF M12). The research methodology encompasses literature of review and experimentation. The mix composition for one cubic meter of concrete comprises 300 kg cement, 111 kg fly ash, 135 liters water, and 720 liters foam. In the case of foam concrete with fibers, 2 kg of polypropylene fibers are added for 1 m3 of mix. Test specimens consist of 35 cylindrical specimens measuring 150 mm x 300 mm and 10 plates measuring 400 mm x 300 mm x 83 mm. The test results indicate a foam concrete density of 560 kg/m³ (for foam concrete with polypropylene fibers), slightly below the target of 600 kg/m³. The average compressive strength of specimens without fibers is 1.08 MPa, with a maximum deformation of 13.00 mm. Meanwhile, for foam concrete with fibers, the average compressive strength is 0.53 MPa, with a maximum deformation of 36.50 mm. The inclusion of fibers in foam concrete leads to lower compressive strength but increased ductility, as evidenced by longer deformation. This characteristic makes the addition of polypropylene fibers more suitable for use in EMAS. Consequently, Paiton fly ash, Gresik Portland cement, and foam (AKS foaming agent) can be effectively employed as local materials in the production of foam concrete for EMAS
ANALYSIS OF WATER DEMAND AND PLANNING OF MASTER PIPE IN PECATU VILLAGE, SOUTH KUTA SUBDISTRICT, BADUNG REGENCY Ida Bagus Made Baskara Andika; Kristina Marta Nainggolan
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p03

Abstract

Pecatu Village is one of the areas located in South Kuta, Badung Regency which is still experiencing an increase in drinking water demand due to the increasing population every year. The source of clean water needs in Pecatu Village is managed by Perumda Tirta Mangutama Badung Regency. The problem that occurs in Pecatu Village is the lack of clean water distribution to all residents who have subscribed or not subscribed to Perumda Tirta Mangutama. Therefore, it is necessary to analyze the need for drinking water and planning the size of the main pipe network in Pecatu Village. This research was conducted by projecting the population of Pecatu Village with a period of 10 years to 2033 using the Least Square method. The results of the analysis showed that the population of Pecatu Village in 2033 was 8839 people with a maximum day water demand is 22.10 L/s and water loss is 2,946 L/s. The main pipe planning is made into 4 segments which are placed based on the grouping of public roads based on their function with pipe diameters of 8 inch and 6 inch.
DESIGN METHOD FOR STRONG COLUMNS-WEAK BEAMS FOR RISK CATEGORY IV BUILDINGS WITH TIME HISTORY PERFORMANCE ANALYSIS P Adi Yasa; Made Hendra Prayoga; Ida Bagus Prastha Bhisama
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p06

Abstract

Collapse pattern that considers the design of strong columns-weak beams in structures located in areas prone to large earthquakes such as Indonesia is an important thing that must be considered. When a large earthquake occurs in buildings with risk category IV based on SNI 1726-2019, the flexible parts of the beam elements are allowed to experience damage, while the columns must not experience soft-story mechanisms. To obtain a more realistic picture of it, in this study Nonlinear Time History Analysis (NLTHA) was chosen because it is considered able to provide a picture of the structural behavior that is closer to reality than Pushover Analysis. The results of the 2D time history performance analysis indicate that a beam-column capacity ratio of 1.2, as specified in SNI 2847-2019, renders the structure unable to achieve the expected collapse performance. By using a trial-and-error process to obtain a safe collapse hierarchy, an increase in column capacity of 2 to 3 times the SNI 2847-2019 column design is obtained. Based on this, in designing structures with risk category IV, apart from having to meet the terms and conditions of SNI the structure also needs to be analyzed for its performance using a more realistic methods such as NLTHA (portal) or 3D to ascertain whether the planned failure pattern can occur or not. This is important considering that the beam column capacity ratio in SNI is not sufficient to reach the Collapse Prevention (CP) condition of 95%.
THE IMPACT OF RAHAYU MARKET ACTIVITY ON THE PERFORMANCE OF IMAM BONJOL STREET IN DENPASAR I Made Agus Ariawan; I Gusti Raka Purbanto; Ni Putu Delima Yogeswari Saraswati
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p07

Abstract

 Jalan Imam Bonjol is a road section located in the West Denpasar sub-district, precisely in the Pemecutan Klod area there is Rahayu Market which has activities in the morning. Activities in this market will indirectly reduce the performance of the section because there are large roadside obstacles. This study was conducted to determine how the performance of the section that occurs on the Imam Bonjol section with and without market activity followed by the impacts that occur. This research includes primary data collection to obtain road geometric values, vehicle volumes, and roadside obstacles, as well as speed (spot speed). The data obtained were analysed using the MKJI 1997 method. The results of the analysis of the performance of road sections in the presence of market activities in two conditions where the traffic volume for hourly conditions at peak times has Q of 1857.35 smp/hour, C of 2946.806 smp/hour, DS 0.63, V 23.92 km/hour with level of service F. While for the peak hour the side obstacle has Q of 690.15 smp/hour, C of 2626.501 smp/hour, DS worth 0.26, V of 19.2 km/hour with level of service F. The performance of the road section without the market obtained Q of 1846.2 smp/hour, C of 3203.05 smp/hour, DS worth 0.58, V of 36.8 km/hour with level of service C. Comparison of road section performance for traffic volume increased 1% and decreased 63% than without market, capacity decreased 8% and 18% than without market, degree of saturation increased 9% and decreased 55% than without market, speed decreased 35% and 48% than without market.
ASSESSING HYDRO-OCEANOGRAPHY CONDITIONS USING DELFT3D NUMERICAL MODEL FOR LAMPIA PORT, BONE GULF, INDONESIA Bayu Wintoro; Munawir Bintang Pratama; Alvin Yesaya; Amirah Zakiyyah
Jurnal Ilmiah Teknik Sipil Vol. 29 No. 1 (2025): Jurnal Ilmiah Teknik Sipil, Vol. 29 No. 1, Maret 2025
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2025.v29.i01.p01

Abstract

Lampia Port is part of the Coastal Area located in The Bone Gulf, Central Sulawesi, and serves as one of the docking ports for passenger and cargo loading and unloading activities in Central Sulawesi. This study was conducted to identify the tidal, current, and erosion/sedimentation characteristics in the coastal waters around the port as parameters for planning the rehabilitation and development of the port. Tidal, current, and erosion/sedimentation analyses were performed using numerical modeling on the Delft3D-FLOW and Delft3D-WAVE modules of the Delft3D software developed by Deltares. The data used in the modeling include bathymetry and local tidal elevations obtained from field surveys. The modeling was carried out using the nesting method with three levels of grid resolution, with the highest resolution at 43 x 43 m² approaching the Coastal Waters of Lampia Port. The modeling results were validated with field data in the form of tidal elevations at two points in the coastal area around the study location. The modeling results indicate that the tidal range in the Lampia Coastal Waters reaches 3,54 meters with a mixed – semi-diurnal type. The modeling results also show the current patterns in the Lampia Coastal Waters with estimated magnitudes ranging from 0.5 m/s to 1 m/s. Additionally, erosion/sedimentation patterns around Lampia Port range between 3-10 cm per year.

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