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INDONESIA
Jurnal Konstruksi
Published by Institut Teknologi Garut
ISSN : 14123614     EISSN : 23027320     DOI : https://doi.org/10.33364/konstruksi
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Kosntruksi yang dapat menampung dan mempublikasikan hasil karya penelitian, karya tulis dan pengabdian masyarakat baik mahasiswa dan dosen-dosen intern maupun dari pihak luar. Jurnal Konstruksi memberikan informasi yang diperoleh dari laboratorium dan workshop penelitian maupun dari lapangan/ studi kasus di dunia nyata dengan cakupan (Scope of Journals) bidang meliputi struktur transportasi/ infrastruktur, air, geoteknik, manajemen konstruksi, dan lingkungan. Melalui jurnal konstruksi diharapkan dapat menampung semua inspirasi bidang teknik sipil sehingga didapatkan pemecahan masalah yang dihadapi dan mampu melahirkan inovasi baru dibidangnya.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 417 Documents
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Analisis Pemodelan Hidrologi Dan Hidraulika Sistem Drainase Menggunakan SWMM: Studi Kasus: Kecamatan Cisurupan, Garut Sulwan Permana; Fajar Abdul Aziz
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3042

Abstract

This study evaluates the performance of the drainage system in Cisurupan Subdistrict, Garut Regency, which often experiences flooding due to limited channel capacity. The main objective is to assess the effectiveness of the existing drainage system and formulate improvement alternatives through modeling using the Storm Water Management Model (SWMM) version 5.2. The study uses a descriptive-quantitative approach based on case studies with 10 years of rainfall data, topography, and channel conditions. Hydrological analysis produced a 5-10 year return period rainfall and a maximum intensity of 23.96 mm/hour. SWMM simulation results showed that some channel segments were only able to accommodate 85% of their full capacity, with potential overflow in the JN2–JN3 segment and a peak discharge of 0.21 m³/s. These conditions indicate that the channel capacity is inadequate for high rainfall intensity. Therefore, it is recommended to increase the channel dimensions and construct retention ponds to reduce the risk of flooding. The development of a drainage system, especially in areas that are prone to flooding during rainfall, requires attention, particularly the maintenance of the drainage network.
Analisis Kehilangan Air pada Daerah Irigasi Lagadar Kabupaten Bandung Muhammad Nur Azmi; Sulwan Permana
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3056

Abstract

Irrigation water plays an important role in supporting the agricultural sector, particularly in Indonesia as an agrarian country. Adequate water availability and proper distribution are key factors in increasing agricultural productivity and ensuring food security. However, water losses due to seepage, leakage, sedimentation, and illegal structures frequently occur in irrigation networks, including the Lagadar Irrigation Area in Bandung Regency, which serves an area of approximately 325 ha. This study aims to analyze the magnitude of water losses and identify the factors causing them. The research adopts a quantitative approach through field studies, involving measurements of inflow and outflow discharge at several channel sections using the float method, as well as analysis of losses due to leakage and seepage using the Moritz equation. Based on discharge measurements conducted over seven consecutive days, the largest water loss was recorded on day 5 at 0.1273 m³/s, while the smallest loss occurred on day 3 at 0.1055 m³/s, with an average water loss of 0.1156 m³/s. These values indicate fluctuations in water losses influenced by the physical condition of the channel and environmental factors. The main factors contributing to water loss are leakage and sedimentation, particularly in the overcrossing sections, which are difficult to maintain, leading to sediment accumulation and a reduction in the effective wetted cross-sectional area. The results of this study are expected to serve as an evaluation reference for irrigation network managers in improving water distribution efficiency and supporting more sustainable water resource management in areas with similar elevation characteristics.
Evaluasi Kapasitas Hidraulik Saluran Irigasi Menggunakan Metode Manning Siti Ulpah Nurazizah; Sulwan Permana; Dendi Yogaswara
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3057

Abstract

Garut Regency is one of the regions in West Java Province with significant potential in the agricultural sector. One of the key infrastructures supporting these activities is the Cimaragas Irrigation Canal, located in Karangpawitan District. In recent years, this area has frequently experienced flooding due to overtopping of the irrigation canal, which is no longer capable of conveying the flow discharge, particularly during the rainy season. In addition, siltation and the accumulation of sediment and solid waste have further exacerbated the reduction in channel capacity. This study aims to assess water demand and water availability within the Cimaragas irrigation system, as well as to determine the ideal dimensions of the irrigation canal capable of conveying the planned discharge. The research employs a quantitative and descriptive approach, with hydrological and hydraulic analyses using the Manning equation and a trial-and-error method to determine the optimal cross-sectional dimensions. The analysis results indicate that the highest water demand occurs in April, amounting to 413.90 L/s, while the highest water availability also occurs in the same month at 639 L/s, indicating that the study area generally experiences a water surplus. Based on the capacity analysis of a trapezoidal channel section, the optimal dimensions obtained are a bottom width (b) of 5 m, a flow depth (y) of 1.8 m, a side slope (x) of 1.5, and a channel bed slope (S) of 0.005, resulting in an actual discharge of 254.285 L/s, which closely matches the irrigation discharge requirement of 245 L/s. From these results, it can be concluded that the existing irrigation canal is no longer adequate to convey the actual discharge, and therefore improvements and dimensional modifications are required by the Government of Garut Regency. This study provides technical recommendations for increasing the capacity and efficiency of the irrigation network to support the sustainability of the agricultural sector. The findings may serve as a basis for planning canal rehabilitation by local authorities to minimize flood risk and optimize irrigation water distribution.
Optimasi Pemanfaatan Sumber Air Untuk Irigasi Berkelanjutan Menggunakan Metode F.J. Mock dan CROPWAT 8.0. Sulwan Permana; Muhammad Diki Paris
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3060

Abstract

The Indralayang area, Garut Regency, has high agricultural potential but often faces challenges in managing water resources due to fluctuations in availability and irrigation demand. This study aims to analyze water resource availability, irrigation water requirements, and determine the most efficient irrigation techniques to support sustainable agriculture systems. The analysis was conducted using the F.J. Mock water balance method to estimate water availability and CROPWAT 8.0 simulations to calculate evapotranspiration, effective rainfall, and crop water requirements.The results show that irrigation water demand amounts to 27,090.83 liters/second, while water availability reaches 29,477.35 liters/second. This indicates a water surplus of 2,386.52 liters/second, with a demand-to-availability ratio of approximately 91.9%, meaning that water resources are sufficient to meet the irrigation needs of 696 hectares of farmland. Given the relatively abundant water supply, the most appropriate irrigation technique is surface irrigation (gravity surface irrigation), complemented by land leveling, channel improvements to reduce water loss, and the application of the Alternate Wetting and Drying (AWD) method in rice fields to enhance water use efficiency.This study contributes to the planning of sustainable irrigation systems in lowland agricultural areas.  
Pengaruh Penambahan Serbuk Kulit Pisang Pada Semen Portland Dalam Berbagai Persentase Terhadap Kuat Tekan Beton Ilham Setiawan; Yudi Setio Prabowo
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3063

Abstract

Concrete is a commonly used construction material due to its high strength and durability. However, the use of cement as the primary component of concrete results in significant carbon emissions. This study aims to examine the effect of adding banana peel powder as an additive and partial cement substitute on the compressive strength of concrete. The method used was an experiment with variations in banana peel powder content of 0%, 1%, and 5%. Cube-shaped test specimens measuring 15 cm × 15 cm × 15 cm were tested for compressive strength at 7 and 14 days of age. The results showed that adding 1% banana peel powder significantly increased the compressive strength of the concrete compared to normal concrete, reaching 15.7 MPa at 7 days and 18.85 MPa at 14 days. However, the addition of 5% actually reduced the compressive strength. Meanwhile, partially replacing cement with banana peel powder tended to reduce concrete strength in all variations. In conclusion, the use of 1% banana peel powder as an additive is the most optimal variation for increasing concrete compressive strength, whereas its use as a cement substitute is not recommended
Perubahan Lendutan Perkerasan Kaku Akibat Modifikasi Tanah Dasar Menggunakan Abu Daun Bambu dan Semen Athaya Zhafirah; Izwan Gunawan; Greece Maria Lawalata
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3069

Abstract

The addition of a mixture consisting of native soil with 5 percent bamboo leaf ash and 5 percent cement has been shown to improve the California Bearing Ratio (CBR) and the strength of subgrade soil; however, its effect on rigid concrete slab deflection has not yet been explored. This study aims to analyze the influence of soil mixtures containing bamboo leaf ash and cement on rigid pavement deflection values using the finite element method through ETABS 21 software, with variations in CBR values, slab thickness, and central loading positions. The CBR data were obtained from previous studies, where the CBR value of untreated soil was 8,94 percent, while the CBR values of soil mixed with bamboo leaf ash and cement were 14,89 percent, 18.41 percent, 31.84 percent, and 41.43 percent. These CBR values were then converted into the modulus of subgrade reaction (k) using an empirical CBR–k equation. Subsequently, the rigid pavement was modeled in ETABS 21 and subjected to concentrated loads according to Class I road specifications (MST) at the center loading position in the longitudinal direction, transverse direction, and maximum deflection condition, with rigid pavement slab thickness variations of 265 mm, 275 mm, 285 mm, 295 mm, and 305 mm. The analysis results indicate that increasing the CBR value through the addition of bamboo leaf ash and cement, along with increasing the concrete slab thickness, consistently reduced rigid pavement deflection. At a CBR value of 8,94 percent with a slab thickness of 265 mm, the longitudinal deflection was recorded at -0,172 mm, whereas at a CBR value of 41,43 percent with a slab thickness of 305 mm, the deflection decreased to -0,089 mm. Similar reduction patterns were also observed in transverse deflection and maximum deflection values. The contribution of this study lies in demonstrating the effectiveness of bamboo leaf ash and cement as subgrade stabilization materials in enhancing subgrade stiffness and reducing rigid pavement deformation. The implication is that the use of these local materials has the potential to become a more efficient and sustainable alternative for subgrade improvement in rigid pavement design.
Pengaruh Substitusi Limbah Keramik dan Superplasticizer terhadap Peningkatan Kuat Tekan Beton Englan Agung Gumelar; Yudi Setio Prabowo
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3096

Abstract

This study aims to analyze the effect of using ceramic waste as a partial substitute for coarse aggregate on the compressive strength of concrete, as well as the role of superplasticizer addition in improving concrete quality. A laboratory experimental method was conducted using ceramic waste variations of 5% and 10% of the total coarse aggregate weight, both without and with superplasticizer. Cube-shaped specimens measuring 15 × 15 × 15 cm were produced with a planned concrete strength of fc = 20 MPa and tested at the ages of 7, 14, 21, and 28 days using a Compression Testing Machine. The test results indicate that the substitution of ceramic waste without additives reduced the compressive strength of concrete, whereas the combination of ceramic waste and superplasticizer significantly improved compressive strength. The variation containing 10% ceramic waste combined with superplasticizer achieved the highest compressive strength of 22.4 MPa at 28 days, surpassing normal concrete. Practically, this study provides a potential alternative for utilizing ceramic waste in the construction industry to reduce solid waste volume while producing more efficient and environmentally friendly concrete mixtures. Theoretically, these findings enrich the study of the interaction between ceramic-based recycled aggregates and superplasticizers in enhancing the density and mechanical performance of concrete. Therefore, ceramic waste can be recommended as a substitute for coarse aggregate up to 10% when combined with superplasticizer to produce concrete that is strong, economical, and supportive of sustainable construction principles.
Analisis Intensitas Hujan dan Estimasi Debit Puncak Menggunakan Metode Mononobe Sherman dan Rasional di Kabupaten Kediri Muhammad Vicxi Pakurohtul Rohman; Eko Siswanto
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3107

Abstract

Kabupaten Kediri termasuk wilayah di Provinsi Jawa Timur yang memiliki iklim monsun tropis dengan dua musim yang jelas, yakni musim hujan dan musim kemarau. Fluktuasi curah hujan yang tinggi pada tahun 2023, dengan total tahunan sebesar 1.330 mm dan puncak tertinggi pada bulan Februari sebesar 391 mm, berpotensi menimbulkan genangan dan banjir lokal. Penelitian ini bertujuan untuk menganalisis pola curah hujan bulanan serta menghitung intensitas hujan jangka pendek (1, 2, 6, dan 24 jam) menggunakan metode empiris Mononobe dan Sherman, kemudian mengevaluasi potensi banjir melalui metode Rasional. Hasil perhitungan menunjukkan bahwa intensitas hujan tertinggi terjadi pada Februari dengan nilai 4,842 mm/jam (durasi 1 jam), sedangkan debit puncak hasil estimasi mencapai 0,121 m³/s untuk area seluas 10 ha dengan koefisien limpasan 0,9. Kondisi ini menunjukkan bahwa meskipun intensitas hujan tidak tergolong ekstrem, akumulasi hujan dan rendahnya kapasitas drainase dapat menimbulkan genangan pada kawasan perkotaan Kediri. Temuan ini menjadi dasar penting dalam perencanaan sistem drainase, mitigasi banjir, serta penyusunan kurva Intensitas–Durasi–Frekuensi (IDF) lokal sebagai acuan desain hidrologi wilayah.
Analisis Clash Detection Pekerjaan Struktur Menggunakan Building Information Modelling Pada Proyek Konstruksi X Nofriadi; Mizanuddin Sitompul; Rhini Wulan Dary; Citra Utami; Harfa Sakri
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3132

Abstract

Conventional Quantity Take-Off (QTO) methods face several significant challenges, particularly in structural projects with complex details and a high variety of elements (columns, beams, slabs, foundations). The limitations of 2D drawing visualization make it difficult to interpret structural details and ensure that no elements are omitted or double-counted. One of the common issues in construction projects is the occurrence of clashes between different work elements, such as structural, architectural, mechanical, electrical, and plumbing (MEP) systems. If not detected early, these clashes can lead to project delays, cost overruns (rework), and even a decline in building quality. The construction project under study is a two-story building designed as an office building. As a case study in this research, this building is expected to provide a realistic picture of potential clashes and how BIM is implemented. Based on BIM-based QTO calculations that account for the impact of clashes at beam-column intersections, the resulting values are lower than those from BIM-based QTO calculations that do not account for such clashes. There is a significant difference in concrete work for column and beam elements. The total cost savings amount to Rp14,126,400.00 when accounting for the impact of clashes at the intersections of columns and beams.
Optimasi Biaya Konstruksi dengan Pendekatan Life-Cycle Cost Pagar Panel Precast dan Pagar Batako di Kediri Jhody Hendarwan; Imam Mustofa
Jurnal Konstruksi Vol 24 No 1 (2026): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.24-1.3154

Abstract

The rapid development of construction technology demands building systems that are efficient in terms of cost, time, and quality. In the context of light infrastructure such as perimeter fencing, the choice of construction method significantly affects the total project cost over its service life. This study aims to compare the economic efficiency of precast concrete panel fences and conventional concrete block (batako) fences using a Life-Cycle Cost (LCC) analysis approach. This research adopts a quantitative–comparative method based on the Life-Cycle Costing Manual (Fuller & Petersen, 1995) and ISO 15686-5:2017 standards. Data were obtained from an actual fencing project in Kediri City, including cost estimates (RAB), material volumes, construction duration, and maintenance costs. The analyzed parameters include Capital Expenditure (CAPEX), Operational Expenditure (OPEX), and Event Costs, using an 8% discount rate and a 20-year project service life. The results show that the precast fence system yields a total Net Present Cost (NPC) of IDR 608.88 million, while the concrete block fence reaches IDR 848.12 million, indicating a cost efficiency of approximately 39%. In addition, the precast system requires only 14 days for installation, which is 58.8% faster than the concrete block system that requires 34 days. In terms of dimensions, the precast fence uses 63.9% less material volume and has a lighter structural weight. Overall, the precast concrete panel fence demonstrates higher cost efficiency, faster construction time, and better material durability under the humid tropical climate of Kediri.

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