Jurnal Ilmiah Rekayasa Sipil

Kinerja Sistem Pengolahan Air Limbah Domestik Terpusat Pada Kabupaten Padang Pariaman

Adi Dalfi, Eva Rita, Khadavi Khadavi — Thu, 24 Apr 2025 14:45:19 +0700

The national achievement of access to proper sanitation has not yet been achieved and is aligned with the Sustainable Development Goals (SDG's) target, one of which is "Realizing Access to Safe and Sustainable Drinking Water and Sanitation". In terms of accelerating the implementation of sanitation infrastructure in the regions, the Government conducts a financing program for the Construction of Centralized Domestic Wastewater Treatment Systems (SPALD-T). However, there are many obstacles and problems that cause the condition of infrastructure and facilities built to be not in an ideal condition, so it is necessary to analyze the performance of centralized domestic wastewater treatment systems, especially in Padang Pariaman Regency. The analysis was conducted in 11 (eleven) Nagari locations receiving community-based sanitation programs whose funds were sourced from DAK from 2019 to 2023 using descriptive qualitative methods, namely observation, interviews and documentation in the form of scoring and weighting and SWOT analysis. In the 11 Nagari analyzed, there is Nagari Sintuk in Sintuk Toboh Gadang District (program year 2022) which has a good quality assessment with a relative value of 8.25, while other Nagari get moderate and poor assessments. Based on the results of the analysis, the dominant aspect that determines the feasibility of waste management is the institutional management aspect in the 11 (eleven) villages analyzed. Where in the assessment of each aspect, the management institution aspect has a very low average value with a weight of 1.22. And based on the results of the SWOT analysis, the management organization of the Beneficiary Group (KPP) has a very important role in the sustainability of the community-based sanitation program.

Revolusi Pembangunan Kota: Dampak Aplikasi SIMBG Terhadap Kepuasan Pemohon Izin Bangunan Gedung

Datuk Tua Pulungan, Khadavi Khadavi, Martalius Peli — Thu, 24 Apr 2025 16:43:56 +0700

Building Construction Management is the implementation of laws and government regulations that signal to the entire community wishing to apply for building permits. Thus, the manual system that has been in place is replaced by a digital system through the SIMBG application in order to provide efficiency and satisfaction to the community in applying for building permits. This study aims to determine the influence of service quality on the satisfaction of Building Permit Applicants (PBG) on the Building Management Information System (SIMBG) application, and the usefulness of the SIMBG application with the satisfaction of PBG applicants implemented in Padangsidimpuan City. The research used a quantitative method where the research variables included service quality, usefulness, and satisfaction of PBG applicants towards SIMBG. The population and sample of the study were selected using accidental sampling method, with a total sample of 99 respondents. Data analysis method used Structural Equation Modeling (SEM) with SmartPLS 4.0 application. The results showed that the service quality of SIMBG has a significant influence on the satisfaction of PBG applicants and there is a positive influence between the usefulness of the SIMBG application and the satisfaction of PBG applicants. Several steps are needed: firstly, it is necessary to improve the quality of SIMBG services by improving system reliability, application responsiveness, and service politeness. Second, intensive socialization and education to the public about the existence and benefits of the SIMBG application are needed. And third, the management of PBG requirements needs to be simplified by adopting a one-stop approach to facilitate the application process. Finally, continuous evaluation and monitoring are needed to evaluate the implementation and quality of SIMBG services and to address ongoing PBG issues.

Analisis Kapasitas Saluran Drainase Menggunakan Permodelan SWMM pada Jalan Pembangunan Kota Batam

Frank Lurich, Ade Jaya Saputra, Jody Martin Ginting — Sat, 26 Apr 2025 17:37:23 +0700

Sistem drainase memiliki peran krusial dalam mengelola air hujan dan mencegah banjir, terutama di kota berkembang seperti Kota Batam. Salah satu wilayah yang rentan terhadap banjir akibat curah hujan dengan intensitas sedang hingga tinggi adalah Jalan Pembangunan, Kecamatan Lubuk Baja, Kota Batam. Permasalahan ini disebabkan oleh kapasitas saluran drainase yang tidak mampu menampung debit air hujan. Penelitian ini bertujuan untuk menganalisis sistem drainase menggunakan perangkat lunak Storm Water Management Model (SWMM) serta mengidentifikasi peluang perbaikan yang dapat diterapkan. Data yang digunakan dalam penelitian ini terdiri dari data primer dan sekunder, dengan curah hujan sebagai parameter utama dalam analisis kinerja sistem drainase. Berdasarkan analisis frekuensi, distribusi log normal digunakan untuk menghitung intensitas hujan. Hasil perhitungan menunjukkan bahwa intensitas hujan di lokasi penelitian mencapai 107,74 mm/jam dengan debit puncak sebesar 48,75 m³/s. Penelitian ini menggunakan periode ulang 2 tahun, karena lokasi penelitian berada di kawasan perkotaan dengan luas daerah aliran mencapai 1,89 km². Hasil simulasi SWMM terhadap kapasitas saluran drainase menunjukkan bahwa saluran drainase eksisting di Jalan Pembangunan tidak mampu menampung debit air hujan dengan intensitas tinggi. Oleh karena itu, diperlukan peningkatan kapasitas saluran drainase serta pemeliharaan yang berkelanjutan guna mengurangi risiko banjir di wilayah tersebut.

Uji Kuat Tekan Mortar Geopolymer Berbasis Fly Ash dan Kapur

Fharhan Tupail, Jasman Jasman, Abd Muis B — Sat, 26 Apr 2025 18:09:56 +0700

The increasing use of infrastructure in Indonesia every year requires a large cement supply. Cement is a very crucial material for development, and its demand in increasing line with the development of human facilities and infrastructure. However, the cement manufacturing process can cause air pollution, CO₂ gas emissions, and produce B3 waste that can damage the environment. One way to reduce this environmental impact is to utilize industrial waste, such as fly ash and lime, as an alternative to cement using geopolymer technology. This study aimed to measure the compressive strength of geopolymer mortar made from fly ash and lime, and to understand how variations in the mixture affect the achievement of maximum mortar strength. The approach applied in this study is an experimental method carried out in the laboratory of the Muhammadiyah University of Parepare. The test specimens used were in the form of cubes measuring 5x5x5 cm with a ratio of fly ash and lime of 70:30, 75:25, and 80:20, so that a total of 36 test specimens were made. The experiment results showed that the mixture with a higher proportion of ash consistently produced greater compressive strength. The mixture with 75% fly ash and 25% lime increased in compressive strength from 6.667 MPa after 7 days to 10.667 MPa after 28 days. This proves that the addition of fly ash in greater amounts can increase the compressive strength of the mortar, especially because fly ash functions as a pozzolanic material that reacts with free lime, forming calcium silicate hydrate (C-S-H) compounds that function as the main binder and thus strengthen the mortar structure. Therefore, the combination of fly ash and lime at 80%:20% is the most efficient and superior mixture in producing high-strength mortar.

Perencanaan Rencana Anggaran Biaya RumahTinggal dengan Pendekatan Inovatif di Kota Kendari

Mon, 28 Apr 2025 21:28:10 +0700

Kendari is the capital city of Southeast Sulawesi Province which administratively has 11 sub-districts and 65 villages. In 2023, the population of Kendari City reached 351,051 people which is increasing from year to year. This increase in population causes the need for houses as a basic need for housing for the community to also continue to increase from year to year. The house as a residence is certainly the key to the comfort and safety of its inhabitants. This comfort and security cannot be separated from efficient and effective house construction planning so that these goals can be achieved properly. The purpose of this research is to obtain detailed specifications of innovative implementation methods and materials that can make the construction of residential houses with a Budget Plan (RAB) that becomes effective and efficient and prioritizes aspects of quality and high quality. The data studied in this research is a residential house with an area of 7m x 9.5m located in Kendari City, Southeast Sulawesi Province. The results obtained are the calculation of the Cost Budget Plan (RAB) of Rp318,419,000 and the innovations applied to achieve the effectiveness and efficiency of residential construction, namely the calculation of the quantity of work items by prioritizing good waste management aspects, the use of high-quality products, casting using mini ready mix concrete with maintained quality, and innovative use of technology such as SketcUp 3D and Microsoft Project for efficient project execution and scheduling methods.

Pengaruh Penambahan Abu Tempurung Kelapa dan Silika Fume Terhadap Kuat Tekan Beton

Ian Sugiawan Saputra, Andi Sulfanita, Misbahuddin Misbahuddin — Mon, 28 Apr 2025 21:43:30 +0700

Coconut shell ash and silica fume can enhance the strength and durability of concrete. Coconut shell ash, as an organic waste material, functions as a lightweight aggregate, while silica fume improves the bond between cement and aggregate, thereby increasing the overall durability of the concrete. This study aims to compare the compressive strength results and determine the optimal percentage of coconut shell ash and silica fume in both normal and mixed concrete at 28 days of curing, using an experimental method. The results showed that the compressive strength of normal concrete at 28 days was 26.33 MPa. After the addition of 2% coconut shell ash and 2% silica fume, the compressive strength increased significantly to 31.61 MPa, representing an improvement of 5.28 MPa. However, adding more than 2% coconut shell ash led to a decrease in compressive strength, with the lowest value of 22.36 MPa observed in the mixture containing 10% coconut shell ash and 2% silica fume. The optimal combination was found to be 2% coconut shell ash and 2% silica fume, yielding the highest compressive strength of 31.61 MPa. These findings suggest that organic waste such as coconut shell ash can serve as an environmentally friendly alternative in the construction industry, especially when combined with supplementary materials like silica fume.

Analisis Perilaku Balok Beton Bertulang dengan Perkuatan Fiber Reinforced Polymer (FRP) Berdasarkan Variasi Tinggi

Ni Putu Silvi, I Putu Laintarawan — Tue, 29 Apr 2025 16:33:31 +0700

Structural failure due to structural design that does not meet the minimum standards according to SNI results in structural failure, one of which is cracks. One of the popular strengthening for reinforced concrete beams is using FRP (Fiber Reinforced Polymer). This is because FRP has the advantages of being lightweight, easy to install, corrosion resistant and does not interfere with the function of the structure. The purpose of this study was to determine the behavior of strengthening reinforced concrete beam structures using FRP with variations in FRP strengthening height against reinforced concrete beams without strengthening. The method used in this study is a quantitative method using FRP height variation data which is modeled and analyzed using the finite element method. Modeling and analysis using SAP2000 software assistance with 5 (five) models, namely model 1 is a model without reinforcement, models 2, 3, 4 and 5 with FRP heights of 0.25h, 0.5h, 0.75h and h respectively. The FRP thickness is 5 mm. The loads calculated in the analysis are the ultimate dead and live loads according to SNI 1727: 2020 (SNI Loading) and SNI 2847: 2019 (SNI Concrete). Based on the analysis results, strengthening reinforced concrete beams with FRP can reduce vertical deflection due to the ultimate load by an average of 46.146% compared to beams without strengthening. The ultimate moment of the support and the field of the FRP-strengthened beam can increase the ultimate flexural and shear capacity by an average of 0.242% compared to beams without strengthening. Likewise, the bending stress s11 min and s11 max of the FRP-strengthened beam can increase the average bending stress capacity by 21.65% compared to beams without strengthening. The maximum stress and strain contours decrease as the FRP strengthening height increases.

Analisis Stabilitas dan Perbandingan Metode Perbaikan Longsor Ruas Jalan Barung-Barung Belantai KM. 45+400, Pesisir Selatan

Rahayu Zelby, Abdul Hakam, Andriani Andriani — Wed, 30 Apr 2025 21:55:16 +0700

The Barung-Barung Belantai road section is located in Pesisir Selatan Regency, West Sumatra. The area is dominated by steep hillsides that are prone to landslides. The types of slope reinforcement used are Gabion, Cantilever Retaining Walls and Sheet Piles. This study aims to calculate the slope safety factor value using the slice method, analyze slope reinforcement against the safety factors of overturning, sliding, soil bearing capacity and calculate the cost and time of the work. Based on the calculation of slope stability, the slope safety factor (Fs) value is 0.8569, overturning is 0.971, and the soil bearing capacity value is 0.996. These values indicate that the slope condition is classified as unstable because all safety factor values (Fs) are below 1.25, which is the safe limit. Based on this analysis, this study recommends the use of a 4-meter high cantilever retaining wall as a repair solution. The calculation results show that this wall has a safety factor (Fs) against shear of 4.920, overturning of 2.003, and soil bearing capacity of 4.730, including the safe category and meeting technical criteria. It is concluded that the cantilever wall is more efficient than the gabion and sheet pile methods. The construction of the cantilever wall requires a budget of Rp. 522,259,000 with a working time of 14 weeks. As a comparison, the construction of the gabion structure costs Rp. 560,974,000 with a work duration of 11 weeks, while the sheet pile costs Rp. 629,578,000.- with a work time of 10 weeks.

Penanggulangan Tanah Longsor Menggunakan Dinding Penahan Tanah dan Bored Pile (Studi Kasus: Jalan Batas Kota Padang- Batas Kota Painan di Kabupaten Pesisir Selatan STA.50+950 – 51+035)

Sonya Ostha Laurency, Andriani Andriani, Abdul Hakam — Wed, 30 Apr 2025 22:43:05 +0700

Terjadinya curah hujan yang tinggi pada daerah kondisi eksisting lerengnya curam menyebabkan terjadinya bencana alam yakni tanah longsor dengan keruntuhan dinding penahan tanah pada bahu jalan nasional yaitu STA. 50+950 – 51+035 (Ruas Jalan : Batas Kota Padang – Batas Kota Painan). Penelitian ini mempunyai beberapa tujuan, yaitu menganalisis stabilitas lereng asli menggunakan metode potongan dengan melakukan tiga kali percobaan yang hasilnya dari faktor keamanan lereng tidak memenuhi dari syarat keamanan, hasil FS < 1,25. Dengan kejadian dilapangan dan dilakukan analisis perhitungan numerik yang menyatakan terjadinya tanah longsor, sehingga diperlukan perbaikan menggunakan dinding penahan tanah dan fondasi tiang bor. Tujuan untuk menganalisis stabilitas dinding penahan tanah terhadap geser, guling, daya dukung tanah tanpa dan dengan fondasi tiang bor dengan hasil dinding penahan tanah tanpa fondasi tiang bor hanya mampu menahan terhadap guling (3,9 > 1,2) dan geser (2,3 > 1,2) namun tidak terhadap daya dukungnya (1,5 < 3) sehingga dengan menggunakan fondasi tiang bor meningkatnya nilai daya dukung dengan hasil daya dukung ultimit tiang tunggal (Qu = 3.443,43 kN) dan daya dukung izin tiang tunggal (Qall = 1.377,37). Namun dalam kasus ini tidak efektif menggunakan tiang tunggal karena jika dikontrolkan terhadap beban yang bekerja diatas fondasi maka tidak memenuhi (Qbeban = 41.766,45 kN), sehingga dilakukan perhitungan tiang group dengan metode menggunakan data Nspt hasil daya dukung ultimir (Qu = 482.080,27 kN) dan daya dukung izin tiang group Qall = 192.832 > Qbeban. Penelitian ini juga mempunyai tujuan menganalisis perhitungan dinamis terhadap dinding penahan tanah menggunakan metode Rankine dan persamaan Mayerhoff dengan hasil aman terhadap guling dan daya dukung namun terhadap geser tidak memenuhi baik secara tanpa pasif maupun dengan pasif. Tujuan terakhir dari penelitian ini mengetahui biaya dan waktu pada pelaksana pekerjaan geoteknik (Rp. 1.014.084.930,62) dengan waktu proses pengerjaan 4 minggu dan struktur (Rp. 10.361.534.397,05) dengan waktu 10 minggu pekerjaan.

Simulasi Hidrologi dan Hidraulik Banjir di Lembah Anai: Studi Kasus 11 Mei 2024

Wed, 07 May 2025 18:30:38 +0700

Since early 2023, Mount Marapi has shown its activity, even until 2024 Mount Marapi has erupted 170 times. Until Monday morning, April 29, 2024, at 06.00 WIB, Mount Marapi remains on Alert status (Level III). This indicates that a lot of landslide material due to volcanic eruptions has accumulated around the peak and upper slopes, which at any time can cause rain-induced lava floods. Related to the activities of Mount Marapi, a map of hazard-prone areas has been issued, including rivers that originate from Mount Marapi which are susceptible to rain-induced lava floods. The research was carried out by identifying river network patterns, hydrological characteristics, river morphology, and land use changes. The river network was analyzed using the Digital Elevation Model (DEM) from ASTER GDEM with a resolution of 8 m. Field validation for the river network was carried out using GPS Mapping at the Xakapa location. The hydrological and hydraulic profiles of the watershed were modeled using HEC-geoHMS and HEC-geoRAS to map the relationship between rainfall intensity, river discharge, and water level elevation along the river. From the modeling results, it can be seen that the rainfall intensity that has the potential to cause flooding is 142 mm/hour, using HEC-GeoHMS with a discharge of 1818 m³/second with a rainfall time of 6 hours causing a flood height of 0.81 m at an elevation of 379.9 with a wet cross-sectional area of 471 m² in Xakapa.