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Mohammad Imamuddin
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International Journal of Civil Engineering and Infrastructure (IJCEI)
Published by Universitas Muhammadiyah Jakarta
ISSN : -     EISSN : 27762580     DOI : -
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation
The objective of the IJCEI is to fully document advances in International research in the fields of construction and infrastructure. IJCEI welcomes submissions in the following areas: structural engineering, geotechnical engineering, transportation engineering, hydraulic engineering, management construction, management Infrastructure, and environmental engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 69 Documents
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THE INFLUENCE OF DILATATION DUE TO EARTHQUAKE LOADS ON HIGH-RISE STRUCTURES WITH AN H-SHAPED FLOOR PLAN Mujib, Sahrul; Budiman, Budiman; Hanif, Basit Al
International Journal of Civil Engineering and Infrastructure Vol 4, No 1 (2024): IJCEI Volume 4 No. 1
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.1.45-53

Abstract

Earthquakes are one of the factors in the collapse of a building structure because vibrations cause movement in the building structure above it, building structures with asymmetrical shapes tend to experience displacement or movement of structural elements higher than structures with symmetrical shapes, asymmetrical building shapes, for example, such as U, L, T and H-shaped building plans with the dilatation method aiming to separate the building to be simpler and make the building more symmetrical. In the analysis of the building structure, 5 models are modeled, a model without dilation (H-shaped plan), a two-column dilation model 1A, a two-column dilation model 1B, a cantilever dilation model 1A and a cantilever dilation model 1B. The results of the structural analysis with the two-column dilation and cantilever dilation methods affect the value of the structural period, the deviation between floors and the p-delta value because the building becomes more symmetrical and simpler.
EFFECT OF THE USE OF WOOD CHARCOAL ASH ON THE COMPRESSIVE STRENGTH OF NORMAL CONCRETE William, Martin Richardo; Sembiring, Kristina; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 3, No 2 (2023): IJCEI Volume 3 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.3.2.32-39

Abstract

Wood charcoal ash is the result of chemical changes from the burning of wood. Wood charcoal contains silica which is a good binder aggregate for concrete mixtures, it is the same as the function of cement in a concrete mixture. Wood charcoal can also be used as a mixture or addition to the manufacture of reactive concrete. Concrete is a mixture of portland cement, fine aggregate, coarse aggregate and water, with or without additives that form a solid mass. Concrete is prepared from coarse aggregate and fine aggregate. Cement and water interact chemically to bind the aggregate particles into a solid mass (George Winter, 1993). Based on the results of research that has been done, the results obtained on normal concrete of 17.98 Mpa at the age of 7 days and increased at the age of 14 days of 20.73 Mpa, and 28 days of 22.94 Mpa. At the time of normal concrete mixed with wood charcoal ash 3% compressive strength of concrete again increased by 20.43 Mpa at the age of 7 days, but at the age of 14 days of concrete with a mixture of wood charcoal ash increased by 20.82 Mpa and again increased at the age of 28 days by 27.07 Mpa. The decrease continued to occur in concrete with a mixture of wood charcoal ash 8% and 13% at the age of 7 Days, 14 days, and 28 days, the increase in the compressive strength of the optimal concrete is in the concrete mixture of wood charcoal ash 3% at the age of 28 days.
HYDRAULIC DESIGN OF SMALL EARTH CASCADE DAM FOR DRYLAND GOGO RICE PLANTATION Prakoso, Wahyu Gendam; Irawan, Pengki
International Journal of Civil Engineering and Infrastructure Vol 4, No 1 (2024): IJCEI Volume 4 No. 1
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.1.1-80

Abstract

The irrigation of gogo rice plantataion on dryland is not extensively developed in Indonesia. Design for the earthfill dam using a combination of hydrological analysis and open-channel hydraulic modeling. Hydrological modeling is conducted by transforming rainfall into runoff using the rainfall- run off model. The hydraulic design involves determining the capacity of the earthfill dam. Hydraulic models and simulations help estimate the potential inflow rates and assess the dam's ability to handle peak flows during extreme weather events. Spillway dimensions are determined based on the dam's design flood criteria, hydraulic modeling, and safety standards. The design of small-scale earthfill dams in cascade to meet the irrigation water needs for dryland paddy plantations in West Tulang Bawang, Lampung, consists of 2 dams (Dam 1: upstream; Dam 2: downstream). Dam 1 effective reservoir 74039 m3, and the inundation area reaches 10846 m2. The inflow discharge is 7.3 m3/second. Total storage volume dam 2 reaching 77023 m3, and the inundation area is 22000 m2. The inflow discharge is 14.18 m3/second. To ensure dam safety, a spillway is designed with an ogee crest using a square-section control with effective widths of 3.0 m for Dam 1 and 4.5 m for Dam 2. Flood reduction in the downstream part of Dam 2 reaches 22% with 10.99 14.18 m3/second outflow discharge and is estimated to be safe to prevent failure due to overtopping hazards. Further research is needed for extreme emergency action plans with simultaneous dam failure scenarios.
THE STRUCTURAL BEHAVIOR OF COLD-FORMED STEEL HOLLOW STRUCTURAL SECTIONS UNDER UNIAXIAL BENDING Budiman, Budiman; Al Hanif, Basit; Yuliansyah, Raka Mirza
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.67-76

Abstract

This study investigates the structural behavior of Cold-Formed Steel (CFS) Hollow Structural Sections (HSS) under uniaxial bending. Cold-formed steel is increasingly used in modern structural applications due to its material efficiency and ease of fabrication, though its bending response is not fully understood. The research combines numerical and experimental analyses to evaluate the bending performance of CFS HSS under uniaxial loading, considering various section sizes, wall thicknesses, and material properties such as yield strength and tensile strength. A finite element model was developed to simulate the bending behavior, focusing on the effects of section geometry and material characteristics. Experimental tests were conducted to validate the numerical model and provide empirical data on the bending capacity and failure modes. The results show that wall thickness and section geometry significantly influence the bending behavior, with thinner-walled sections being more susceptible to local buckling. Additionally, material strength plays a critical role in enhancing the bending capacity, with stronger materials resulting in higher load-carrying capacities. The findings of this study provide valuable insights into the design and application of CFS HSS, contributing to more accurate and reliable design codes for cold-formed steel structures.
TIME AND COST MANAGEMENT ANALYSIS OF THE FORMWORK AND REINFORCEMENT WORK (COLUMNS, BEAMS, AND SLABS) FOR THE 2ND FLOOR AMENITIES IN THE OFFICE BUILDING DEVELOPMENT PROJECT OF THE KNOWLEDGE HUB BSD CITY Nosi, Leonardus; Bangun, Sempurna; Sembiring, Kristina; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.23-36

Abstract

A project is a business activity that is complex, non-routine in nature, has limited time, budget and resources and has its own specifications for the product to be produced. With the existence of several limitations in working on a project, an organization in the project is needed to manage the resources (equipment, budget, and workforce) owned so that they can carry out synchronous activities so that the project objectives can be achieved. In construction projects every building material uses concrete material, which in practice, especially in the last 10-20 years, concrete has been increasingly used. To obtain the planned concrete shape and to harden it, we need formwork or moulds. The Knowledge Hub BSD City office building project is built on an area of 1.1 hectares covering a building area of 54,956 m2 consisting of 11 floors. This location is located on Jalan Raya BSD Barat, Sampora, Cisauk District, Tangerang Regency, Banten Province. The research objective for the analysis of these calculations starts from calculating the duration of each job based on cost and time calculations obtained from existing technical drawing data. The research method used is the calculation of formwork (columns, beams and slabs) through the Microsoft Excel application.
ANALYSIS OF THE RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND BENDING STRENGTH OF CONCRETE WITH FC 30 MEGAPASCAL (MPA) Budiarto, Rika; Azhar, Moh; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.73-81

Abstract

With the rapid development in the field of construction, various material innovations are increasingly emerging, especially in concrete. Concrete is in high demand for its durability, resistance to pressure, and low maintenance costs. Made from a growing mix of cement, coarse aggregate (split), fine aggregate (sand), water, and additives, concrete is becoming a top choice in modern infrastructure. This study aims to explore the relationship between compressive strength and flexural strength in 30 MPa quality concrete. The method used was a laboratory experiment with cylindrical and block-shaped test pieces, which were tested at the ages of 7, 14, and 28 days. The main materials used include coarse and fine aggregates, water, fly ash, and Portland type I cement. The study measured the compressive strength values of concreate, and evaluated the formula  \(fs=0.62√(fc^' ) \) as stated in SNI 2847:2013 to test its relevance to this quality concrete. The results showed that the flexural strength increased with the age of the concrete, with the largest difference between compressive strength and flexural strength at 1.3%. These findings support a deeper understanding of the performance of concrete at a given age and the relevance of the standard formula for 30 MPa quality concrete.
FLOOD INUNDATION ANALYSIS WITH 2-D HEC-RAS MODELLING (CASE STUDY: WAY UMBAN RIVER) Aprizal, Aprizal; Fitriana, Indri Rahmandhani; Ainistia, Nurul
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.37-46

Abstract

The "Way Umban River" is a river that has the potential to cause flooding during the rainy season. Floods are natural disasters that often occur and can cause losses to humans, the environment, and the economy. Flood mitigation helps overcome this problem. Flood modeling analysis is the first step in flood control to identify areas that are vulnerable to flooding. This research analyzes flood modeling using the software HEC-RAS 2-D by unsteady flow type. Three return periods are used, namely 10 years, 25 years, and 50 years. The designed flood discharge is obtained using the HSS Nakayasu method and then used as input in the HEC-RAS model. From the calculation results, the maximum designed flood discharge value for the 10-year return period is 85,03 m3/s, the 25-year return period is 98,30 m3/s, and the 50 years is 108,14 m3/s. Based on 2-D modeling, it is known that the designed discharge value for a return period of 50 years has a wider flood distribution compared to return periods of 10 and 25 years. The ten-year return period flood discharge produces an inundation area of 93,76 ha, the 25-year return period flood discharge produces an area of 98,33 ha, and the 50-year return period flood discharge produces an inundation area of 101,09 ha. Based on the analysis of areas that have the potential to flood, it was found that the locations with the potential to experience inundation are in Tanjungaman Village.
THE IMPLICATIONS OF ROAD CONDITION ON ROAD USERS AND LOCAL COMMUNITIES IN INDUSTRIAL AREAS Soerjatmodjo, Irnanda Satya; Rahayu, Tanjung; Al Kautsar, Muhammad Gibran
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.47-56

Abstract

The accelerated growth of the industrial sector demand reliable transportation infrastructure to facilitate the efficient circulation of commodities and economic progress. The road network in industrial zones is a critical infrastructure that serves as a strategic route essential for supporting surrounding industrial activity. Nonetheless, road damage, including cracks, deformations, and potholes, presents considerable issues by diminishing road capacity to support traffic loads and hastening pavement degradation. The road damage adversely affects both road users and the populations residing nearby. This study analyzes the impact of road deterioration on road users and adjacent communities. The results indicate that road damage substantially affects these groups, with average interpretation ratings of 4.05 for road users and 4.12 for adjacent communities, both classified as "good" in the assessment. These results highlight the necessity for efficient road repair and management to ensure the sustainability of industrial operations and community well-being.
ANALYSIS OF COST AND TIME CONTROL ON THE LIBRARY CONSTRUCTION PROJECT OF THE POLICE TRAINING INSTITUTE USING THE EARNED VALUE Xena S P, Canda; Bangun, Sempurna; Dewita, Hikma; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.1-12

Abstract

In a construction project, the factors that become indicators of the success of a project are that it must be cost, time and quality that can be achieved by planning, scheduling, and controlling its implementation properly. The method used to analyze data regarding cost control and project implementation time so that it can be effective and efficient is to use the concept of the value of the results (Earned Value Concept). From the data that has been obtained, the next step is to calculate the work weight for each item. Then an analysis of cost and time control is carried out using several approaches, namely: BCWS, BCWP and ACWP. The results of project data processing use the analysis calculation of the result value method. From the calculation of the Schadule Variance (SV) the work accelerates 1 week from the predetermined schedule. the total schedule/schedule 17 weeks of work and the results of the calculation on the 17th week is 2,710,716.28. Showing a positive number, this indicates that the implementation of the work is faster than the planned schedule. From the results of the calculation of Cost Variance (CV) the work has accelerated by 1 week from the predetermined schedule. week 17 is 2,011,321,591.90. Showing a positive number, this indicates that the cost to complete the project is less than the planned cost. The calculation result of the Schedule Performance Index (SPI) that the work has accelerated 1 week from the predetermined schedule. In week 1 to week 17 of 1.00, it shows that the project was carried out on time. The results of the calculation of the Cost Performance Index (CPI) of work accelerated by 1 week from the predetermined schedule. In the 1st week to the 17th week of 1.00 indicates that the work in the field costs in accordance with the planned budget
BACK ANALYSIS INVESTIGATION OF THE FACTORS CONTRIBUTING TO SETTLEMENT IN EMBANKMENTS ON SOFT SOIL Pratama, Andreas Raya; Al Hanif, Basit; Soerjatmodjo, Irnanda Satya
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.57-66

Abstract

The economic growth of a region is intricately linked to infrastructure development, especially toll highways, which augment the efficiency of products and services distribution, diminish logistical expenses, and promote access to economic hubs. The construction of toll roads, particularly embankments on soft soil foundations, encounters considerable obstacles due to the limited bearing capacity and high compressibility of soft soil, resulting in settlement issues that may threaten structural integrity and functionality. This research examines settlement behavior in embankments on soft soil by a "Back Analysis" methodology, comparing actual field settlement data with predictive modeling outcomes derived from the finite element method (FEM). Field data and FEM simulations were evaluated to determine the precision of predictive models and their capacity to represent the intricate stress-strain behavior of soft soil. The findings underscore the necessity of combining field validation with sophisticated modeling tools to enhance predictive accuracy and guide effective construction and ground improvement methodologies. This study offers significant insights for engineers and politicians to guarantee the enduring performance and sustainability of toll road infrastructure.

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