International Journal of Civil Engineering and Infrastructure

ANALYSIS OF COST AND TIME CONTROL ON THE LIBRARY CONSTRUCTION PROJECT OF THE POLICE TRAINING INSTITUTE USING THE EARNED VALUE

Canda Xena S P, Sempurna Bangun, Hikma Dewita, Pio Ranap Tua Naibaho — Tue, 24 Dec 2024 00:00:00 +0000

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

DRAINAGE ANALYSIS OF JAKARTA BANDUNG HIGH SPEED TRAIN STATION AT HALIM STATION USING HEC-RASS

Mohammad Imamuddin, Diva Quinta Mahmuda — Tue, 24 Dec 2024 00:00:00 +0000

Halim Station is the main station in the Jakarta-Bandung High-Speed Train project, playing a crucial role in facilitating travel between the two metropolitan cities. The Halim Station building for the Jakarta-Bandung High-Speed Train is located on the Jakarta - Cikampek Toll Road at KM 0+800, East Jakarta City. Halim Station is the first station for departure and the last stop for journeys using the Jakarta-Bandung High-Speed Train. The area of the Halim Station building is 25,700 m2 with a roof area of 31,100 m2. Each day, the water source to meet operational needs at Halim Station comes from the Regional Water Company (PDAM) with a maximum daily clean water usage limit of 210 m3. The utilization of rainwater in the context of high-speed train stations has significant potential to meet operational sanitation and water needs around the station. With proper rainwater collection, storage, and management systems, rainwater can be processed into a safe and quality water source for various purposes around the station. If there is excess rainwater not needed for the building's operational requirements, the calculation will also include the need for infiltration wells and drainage channels. The utilization of rainwater as an alternative water source for operational needs is expected to completely replace the water source of Halim Station, which previously came from PDAM. Therefore, this could contribute to efforts to reduce environmental impacts and conserve water resources in Indonesia.

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

Leonardus Nosi, Sempurna Bangun, Kristina Sembiring, Pio Ranap Tua Naibaho — Tue, 24 Dec 2024 00:00:00 +0000

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.

FLOOD INUNDATION ANALYSIS WITH 2-D HEC-RAS MODELLING (CASE STUDY: WAY UMBAN RIVER)

Aprizal Aprizal, Indri Rahmandhani Fitriana, Nurul Ainistia — Tue, 24 Dec 2024 00:00:00 +0000

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

Irnanda Satya Soerjatmodjo, Tanjung Rahayu, Muhammad Gibran Al Kautsar — Tue, 24 Dec 2024 00:00:00 +0000

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.

BACK ANALYSIS INVESTIGATION OF THE FACTORS CONTRIBUTING TO SETTLEMENT IN EMBANKMENTS ON SOFT SOIL

Andreas Raya Pratama, Basit Al Hanif, Irnanda Satya Soerjatmodjo — Tue, 24 Dec 2024 00:00:00 +0000

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.

THE STRUCTURAL BEHAVIOR OF COLD-FORMED STEEL HOLLOW STRUCTURAL SECTIONS UNDER UNIAXIAL BENDING

Budiman Budiman, Basit Al Hanif, Raka Mirza Yuliansyah — Tue, 24 Dec 2024 00:00:00 +0000

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.

ANALYSIS OF THE RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND BENDING STRENGTH OF CONCRETE WITH FC 30 MEGAPASCAL (MPA)

Rika Budiarto, Moh Azhar, Sempurna Bangun, Pio Ranap Tua Naibaho — Mon, 28 Oct 2024 00:00:00 +0000

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.