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INDONESIA
LEADER: Civil Engineering and Architecture Journal
Published by Universitas Internasional Batam
ISSN : -     EISSN : 3026622X     DOI : https://doi.org/10.37253/leader
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The journal covers topics in civil engineering and architecture, including structures, geotechnics, transportation, water resources, construction management, environment, urban planning, materials, and regional development. LEADER serves as a multidisciplinary platform for academics and professionals interested in development transformation in emerging countries.
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Articles 176 Documents
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Directions for The Development of The Aek Sipitu DAI Tourism Area Jehezkiel Purba; Andi Sahputra Depari; Elin Diyah Syafitri; Rulliannor Syah Putra
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 5 (2025): October
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i5.11060

Abstract

Samosir Regency is an area that is considered one of the tourist destinations located in North Sumatra Province. Its tourism assets are diverse, one of which is the Aek Sipitu Dai tourist attraction located in Sianjur Mula-mula District, Samosir Regency. Aek Sipitu Dai is one of the tourist sites that needs to be developed due to its lack of appeal to tourists, resulting in a low number of visits to this destination. The purpose of this research is to formulate directions for the development of Aek Sipitu Dai Tourism. To achieve this goal, specific objectives need to be established, namely evaluating the physical and environmental conditions using the scoring analysis method, and then formulating development directions for tourism in the Aek Sipitu Dai area using triangulation analysis. After the research was conducted, the results consisted of analysis values of the physical and environmental conditions, each with their respective assessment scales for each variable. To formulate directions for the development of the Aek Sipitu Dai tourism area, the results of the physical and environmental condition analyses are compared using the data source triangulation analysis technique.
ANALYSIS OF THE CAUSES OF TRAFFIC CONGESTION (CASE STUDY OF JATIWANGI—LIGUNG ROAD) Mushthofa; Joewono Prasetijo; Muhammad Taufik
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11256

Abstract

Traffic congestion on Jatiwangi-Ligung Road in Majalengka Regency has become a major problem. The purpose of this study is to find out the causes of congestion and find the best way to solve it. This study found through field observations, traffic data analysis, and literature studies that the main causes of congestion are the increasing number of private vehicles, limited road capacity, and lack of public transportation integration. In addition, conventional markets and non-ideal intersections worsen traffic conditions. Based on these findings, this study recommends several strategies to overcome congestion, including: increasing road capacity, developing an integrated public transportation system, implementing a technology-based traffic management system, and consistent law enforcement. In addition, active community participation in efforts to reduce congestion is also very important. The results of this study are expected to be a basis for local governments in formulating more comprehensive and sustainable transportation policies, so that they can improve the quality of life of the community and reduce the negative impact of congestion on the local economy.
EVALUATION OF UNSIGNALIZED INTERSECTION: CASE STUDY INTERSECTION ROUNDABOUT MUNJUL JL KH. ABDUL HALIM-JL PEMUDA-JL SITI ARMILAH MAJALENGKA Silpi Naskah Lasti; Joewono Prasetijo; Muhammad Taufik
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11258

Abstract

An unsignalized intersection is defined as a meeting of two or more roads not equipped with red lights or traffic signs to control traffic. Traffic problems in Majalengka Regency must be fixed or resolved in an orderly manner. The survey method was used. The research was carried out for two days in one week, and the calculations used MKJI and PKJI. Based on the results of calculations and research conducted at the unsignalized intersection at the Parapatan Munjul Roundabout connecting the road from the East and West of Jalan KH. Abdul Halim from the South of Jalan Pemuda and the North of Jalan Siti Armilah, it was concluded that the total traffic volume during peak hours, namely on Monday, December 23, 2024, at 07.00 - 08.00 with a value of 1562.35 / hour, therefore indicating a poor level of service. The results of the LOS service level have poor information from the East and West, and South and North have good information. Of the population in Majlengka Regency of less than 1.36 million, it will increase over time and traffic volume will increase.
Boosting Boosting Rigid Pavement Productivity: Lessons from Experience and Working Hours on the Bengkulu Toll Road Project Akhmad Mujiburrokhman; Danang Purwanto; Fadhil Muhammad
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11260

Abstract

Rigid pavement work was a key component in toll road construction that played a strategic role in the speed of project completion. Two important internal factors that affected productivity were experience and working hours. Mismanagement of either of these factors could cause project delays. This study aimed to analyze the significance of the influence of work experience and working hours on the productivity of rigid pavement work in the Trans-Sumatra Toll Road project, Bengkulu–Lubuklinggau Section 3. The research method used was a quantitative approach with multiple linear regression analysis. Primary data were obtained from daily work reports that recorded the area of concrete coverage, working hours, and worker experience. The results of the classical assumption tests showed that the regression model met the requirements of normality, multicollinearity, and heteroscedasticity. The partial test (t-test) showed that experience had a significant positive effect on productivity (Sig. = 0.000), while working hours had a significant negative effect (Sig. = 0.021). The simultaneous test (F-test) yielded Sig. = 0.000 with an R value of 0.608, meaning that the variables of experience and working hours together influenced productivity by 60.8%. The average productivity value was recorded at 91.05 m²/hour with a high variance (variance = 391.545), which reflected the actual conditions on-site and indicated the significant influence of both external and internal factors. This finding underscored the importance of effective human resource management and optimal work schedule arrangements to enhance the performance of rigid pavement construction on toll road projects.
Analysis of Natural and Artificial Lighting Assessment for SNI Compliance in Physics Laboratories Danang Purwanto; Fadhil Muhammad; Akhmad Mujiburrokhman
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 4 (2025): August
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i4.11266

Abstract

Lighting quality in educational laboratories plays a crucial role in supporting visual comfort, health, and accuracy during practical activities. According to the Indonesian National Standard (SNI 03-7062-2004), the minimum required illuminance for laboratories is 500 lux. This study aims to evaluate the lighting level in the Physics Laboratory at Universitas Negeri Yogyakarta by comparing natural lighting (lamps off) and combined natural–artificial lighting (lamps on). Measurements were conducted using a digital lux meter at a working plane of 0.80 m across 25 grid points. Data collection was carried out at three time intervals—morning (09.00–10.00), noon (12.00–13.00), and afternoon (15.00–16.00)—with three replications each. Results show that natural lighting alone cannot meet the standard, with maximum values of only 217.89 lux at noon and as low as 33.15 lux in the afternoon. In contrast, artificial lighting significantly increased illuminance, reaching 568 lux in the morning, 620.1 lux at noon, and 500.46 lux in the afternoon—all above the required minimum. It is concluded that artificial lighting is essential to maintain adequate and stable illuminance in the laboratory. Regular maintenance and energy-efficient lamp systems are recommended to ensure both compliance and sustainability.
Planning for a 5-Story Hotel in Subarang Batuang Village, Payakumbuh City Puja Maike; Elvi Syamsuir; Fatma Ira Wahyuni
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 6 (2025): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i6.11964

Abstract

Planning of a Hotel Building in Payakumbuh City. The project is located on Diponegoro Street, Subarang Batuang Subdistrict, West Payakumbuh District, Payakumbuh City. The building consists of 5 floors and is equipped with stairs and an elevator. The superstructure uses reinforced concrete construction with a concrete strength of 25, deformed reinforcing steel with a yield strength of 420, and plain reinforcing steel with a yield strength of 280. The substructure uses bored pile foundations with a depth of 7.2 m. The structural design of the building refers to the following standards: SNI 2847-2019 Structural Concrete Requirements for Buildings and Commentary, SNI 1727-2020 Minimum Design Loads and Associated Criteria for Buildings and Other Structures, SNI 1726-2019 Seismic Design Requirements for Buildings and Non-Building Structures, SNI 2052-2017 Steel Reinforcement for Concrete, Load Design Guidelines for Houses and Buildings (1987), and SNI 8900-2020 Simplified Design Guidelines for Reinforced Concrete Buildings. Based on the structural analysis, the following dimensions were obtained: slab thickness of 12, roof slab thickness of 10 cm, main beam dimensions 30/60 cm, primary main beam dimensions 35/70 cm, secondary beam dimensions in the 25/40 cm, column dimensions 60/60 cm, bored pile foundation diameter 80 cm.
Perencanaan Ulang Drainase Perumahan Griya Jean Tiakar Balai Batimah, Kecamatan Payakumbuh Timur, Kota Payakumbuh Ezi Juniza; Sutria Desman; Ridha Sari
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 6 (2025): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i6.11970

Abstract

The population growth in Payakumbuh City, which reaches 6,79 % per year, increases the demand for housing and reduces green infiltration areas. This condition leads to waterlogging and decreases the performance of the existing drainage system in Griya Jean Tiakar Housing, East Payakumbuh District. This research aims to redesign the drainage system to effectively accommodate stormwater runoff and domestic wastewater. The theoretical framework is based on hydrology and hydraulics principles by Suripin (2010) and Triatmodjo (2008), as well as the drainage planning standards of SNI and the Directorate General of Human Settlements. The study applied a quantitative approach, including hydrological analysis, design flood discharge calculation using the rational method, and channel capacity analysis using Manning’s equation. Primary data were obtained from field observations of existing conditions, while secondary data included 10-year rainfall records from the Tanjung Pati station. The results show that the planned discharge is 0,0373 m3/s, with an optimal channel dimension of 0,45 m height and 0,45 m width. The redesigned channel can adequately accommodate runoff and domestic wastewater without causing flooding. Therefore, this drainage redesign is expected to improve the residential drainage performance and support sustainable urban environmental management.
Use of fly Ash a Substitute For Part Cement In Wall Plaster: An Effective Study on The Quality Tests of Plastering Azizah Wardani; Sutria Desman; Fatma Ira Wahyuni
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 6 (2025): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i6.11971

Abstract

Cement production in the construction industry generates a significant amount of carbon dioxide (CO2) emissions, which negatively impact the environment. One of the efforts to reduce this impact is by utilizing coal combustion waste (fly ash) as a partial replacement for cement. This study aims to determine the effect of using fly ash on the compressive strength of wall plaster and to identify the optimum percentage of fly ash substitution that still meets plaster quality standards. The research method used was a laboratory experiment with a quantitative approach. The variations of fly ash used were 20%, 30%, and 40% of the cement weight. Test specimens were cube - shaped with dimensions of 5 x 5 x 5 cm, and compressive strength tests were conducted at 7 and 21 days. The fly ash used in this study was obtained from the Sawah Lunto stream power plant PLTU Sawah Lunto). The results showed that the addition of fly ash affected the mechanical properties of the plaster, particularly its compressive strength. The highest compressive strength value was obtained from the mixture containing 20% fly ash, reaching 18.24 Mpa at 28 days of age.
The Influence of Optimum Water Content (Wopt) and Maximum Dry Density (γd) on Laboratory CBR Values at Grand Madinah Regency Housing, Balai Gurun Koto Nan Gadang, Payakumbuh City Rivaldi Harianto; Hanifah Asnur; Sutria Desman
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 6 (2025): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i6.11972

Abstract

Soil is a fundamental element in road construction, serving as the subgrade layer that supports vehicular loads, therefore, its charateristics  particularly  moisture  content  and  soil compaction significantly affect bearing capacity, this study aims to analyze the effect of optimum moisture content and maximum dry density on the California Bearing Ratio (CBR) value obtained from laboratory test on soil from Grand Madinah Regency Housing area, Balai Gurun Koto Nan Gadang, Payakumbuh City. The theoretical foundation includes the concept of soil compaction based on the Standard Proctor Test and the CBR test as an indicator of subrage strength in pavement design. The research employed a quantitative experimental method, with soil samples collected directly from the field and tested at the Laboratory of Sekolah Tinggi Teknologi Payakumbuh using 10, 25, and 56 blows of compaction to analyze the relationship between moisture content, dry density, and CBR value. The results showed that the optimum moisture content was 38,08% and the maximum dry density was 0,73 gr/cm3. The laboratory CBR values obtained were 0,67%, 0,70%, and 0,72%, with a design CBR value of 0,69%. According to the CBR classification, the soil is categorized as very poor subrgrade, indicating that it is unsuitable as a subgrade layer without stabilization. In conclusion, an increase in moisture content reduces both density and CBR value, while optimal compaction significantly enhances the soil’s bearing capacity.
The Effect Of Straw Bagasse Dust Mixture On Improving The Density (Γd) Of Silt Soil In Jorong Indobaleh Timur, Mungo, Luak District, Lima Puluh Kota Regency Chitra Ikhwan Gani; Hanifah Asnur; Sutria Desman
LEADER: Civil Engineering and Architecture Journal Vol. 3 No. 6 (2025): December
Publisher : Fakultas Teknik Sipil dan Perencanaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/leader.v3i6.11973

Abstract

Silt soil has low bearing capacity and is unstable, making it unsuitable as a foundation for construction without improvement efforts. One potential soil stabilization method is by untilizing rice husk ash, wich is an agricultural waste rich in silica and possesses pozzolanic properties. This study aims to determine how the addition of rice husk ash affect the density of silt soil in Jorong Indobaleh Timur, Luak District, Lima Puluh Kota Regency. The literature review refers to soil compaction theory, soil classification according to AASTHO and USCS, and  previous studies related to the utilization of local materials for soil stabilization. The research method employs an experimental approach in the laboratory of Sekolah Tinggi Teknologi Payakumbuh. Testing was conducted on original soil and soil mixtures with variations of rice husk ash at 2%, 4%, 6%, 8%, and 10% using the Standard Proctor test. The tested parameters included moisture content, maximum dry unit weight (γd max), and optimum moisture content. The result show that the original soil has a γd max of 1.07 gr/cc and an optimum moisture content of 32.55% The 4% rice husk ash mixture provides optimal results with a γd max of 1.13 gr/cc and an optimum moisture content of 34.33%, while additions beyond 4% do not significant improvement. In conclusion, the addition of 4% rice husk ash is most effective in increasing the density (γd) of silt soil, making it applicable as a local stabilization material for road construction ang light foundations.

Page 17 of 18 | Total Record : 176

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