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INDONESIA
Jurnal Konstruksi
Published by Sekolah Tinggi Teknologi Garut
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Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
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Articles 378 Documents
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Studi Kawasan Kerentanan Longsor pada Ruas Jalan Cikajang Pamengpeuk KM BDG 88+200 S/D 147+790 Sharief, Gariballah; Susetyaningsih, Adi
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1343

Abstract

Development progress and land clearing along the Cikajang-Pameungpeuk KM BDG Road Section. 99+800 to 147+790 increases, this can influence the occurrence of landslides. This research aims to determine the level of landslide vulnerability along the Cikajang-Pameungpeuk KM BDG 99+800 S/D 147+790 Road Section. The method used is overlay and weighting using 4 landslide susceptibility parameters. From the results of combining the data obtained, in Cikajang District it shows that it is prone to landslides, there are three landslide points, in Banjarwangi District it shows that it is less prone to landslides, there are no landslide points, in Cihurip District it shows that it is less prone to landslides there is one point of landslides, in Cisompet District it shows that it is very There are seven points prone to landslides and in Pameungpeuk District it shows that it is less prone and there are no landslide points.
Analisis Kolam Olak Bendungan Leuwikeris Kabupaten Ciamis-Tasikmalaya Komalasari, Amelia Citra Mulya; Permana, Sulwan
Jurnal Konstruksi Vol 22 No 1 (2024): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.22-1.1346

Abstract

The Leuwikeris Dam is a dam built in two districts, namely Ciamis Regency and Tasikmalaya Regency. One of the structures of the dam is a stilling pond. Stilling ponds are built to reduce the energy contained in the flow by utilizing hydraulic jumps from a high-speed flow. The type of stilling pond at the Leuwikeris Dam is type USBR II which has a Froude number value of more than 4.5 and a discharge of more than 60m³/second. The research carried out this time calculated the amount of energy loss in the stilling pond of the Leuwikeris Dam with the USBR II stilling pond type. In finding the value of energy loss, the discharge of the Leuwikeris Dam is needed using modeling. Discharge modeling uses the NRECA method by calibrating with existing discharge, namely the discharge in Cirahong. Discharge modeling is also used with normal distribution method calculations, log normal, gumbel and log pearson type III. The results of these calculations are an NSE value of 0.756 in modeling discharge using the NRECA method and calibrated with the Cirahong discharge for 5 years and the amount of energy lost in the stilling pond of 4.78 meters.
Evaluasi Perilaku Struktur Gedung Beton Bertulang dengan Metode Elemen Hingga Proyek Pembangunan Banten Islamic Center Pratama, Rama; Walujodjati, Eko
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1357

Abstract

One type of construction is building construction, an important infrastructure in human life and widely used throughout the world. Building construction can be used for various activities, such as residences, offices, shopping centers, and the like. Therefore, technology that can help make building plans easier and more connected is needed, namely calculating the analysis of the building structure using the finite element method (Finite.Element.Method). The evaluation calculation also refers to SNI`1726,1727, and 2847:2019. The load calculation includes wind, earthquake, dead and live loads. The upper and lower structures are the structural components that are analyzed. The results of the evaluation calculation show that the concrete structure is able to withstand the given loads, seen from the 600 x 600 dimension column where the moment acting on the column is 171 kNm while the moment that the column can withstand is 496.7 kNm with a ratio of 0.346 , so it can be said that the structure is very safe, but in terms of efficiency the material used in the column can be said to be wasteful.
Pengaruh Bahan Tambah Superplasticizer pada Beton Porous Terhadap Kuat Tekan, Tarik Belah dan Permeabilitas Andriansyah, Danil; Walujodjati, Eko
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1386

Abstract

Porous concrete is an innovation in sustainable concrete technology without fine aggregate with high porosity. This porous concrete can be used on road pavement to overcome water run-off, and can also be applied as a retaining wall which functions to minimize ground water pressure. This research intends to examine experimentally the mechanical properties of compressive strength, tensile strength and permeability of porous concrete with various variations in cement water factors. The coarse aggregate used for Cilopang crushed stone is sized 19 mm, 12.5 mm, 9.5 mm and uses added supperlasticizer. The sample used for testing compressive strength and split tensile strength was in the form of a cylinder measuring 15 x 30 cm. Based on the test results according to ACI 522R-10, the test results for porous concrete show that normal porous concrete using supperplasticizer additives has experienced changes in the value of compressive strength and splitting tensile strength compared to normal concrete.
Pengujian Kuat Lentur dan Permeabilitas Terhadap Beton Porous dengan Agregat Kasar Cilopang Ghilman, Rafiqan Mochammad; Walujodjati, Eko
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1387

Abstract

Concrete is a construction material that is currently very commonly used. One of the innovations made is porous concrete or non-sand concrete, which is a simple form of lightweight concrete made by removing fine aggregate. This porous concrete can be used on road pavement to prevent water run-off. This research aims to experimentally examine the mechanical properties of the flexural strength and permeability of porous concrete with various variations in the cement water factor. The coarse aggregate used for Cilopang crushed stone measures 19 mm, 12 mm, 9 mm, for the average load for each sample 19 mm 5.3, 12 mm sample 7.3 and 9 mm sample 8.6. The test specimens used for each variant were 9 concrete block specimens measuring 10 x 15 x 60 cm with different aggregates. Permeability of porous concrete with different coarse aggregate sizes, sizes 19 mm, 12 mm and 9 mm. From these results the speed of absorption is 00 : 12.31 mm/sec for aggregate size 19, 00 : 15.90 mm/sec for aggregate 12, 00 : 24.01 mm/sec for aggregate. Has met the requirements based on (NRMCA, 2011) and (ACI 522R-10).
Perkuatan Soil Nailing pada Lereng Singajaya Garut Tarakashima, Champernic; Zhafirah, Athaya; Fadli, Dicky Muhamad
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1397

Abstract

The landslide natural disaster that hit the slopes of Cigunung Singajaya Garut caused road access to Cihurip District to be cut off. This research aims to determine the safety value of slopes and plan reinforcement that can increase the safety value of slopes. Slope strengthening with soil nailing was used in this research with variations in slope angles of 10, 15, and 20 and variations in nail bar length by the same amount, namely 8 m, 10 m, and 12 m. The soil nailing method used in this research. Slope stability analysis of the Bishop method and GeoStudio Slope/W student version. The results of the slope stability analysis before strengthening produced a safety factor value, using the Bishop method, it was 0.273 and analysis using GeoStudio Slope/W student version was 0.201. The results of the slope stability analysis after strengthening with variations in slope angle and nail bar length produced different safety factor values, namely 1.286 for an angle of 10º; 2,195 for 15º angle; and 1.540 for a 20º angle. The predicted results of soil nailing cost budget planning with a planning area of ​​1321 m2 is IDR 5,513,664,027.12.
Analisis Geser pada Balok Komposit Kayu Kamper Laminasi Baut Perekat-Beton Bertulang dengan Perkuatan CFRP Rezeki, Pamella M Sri; Rachma, Intan Nuriskha
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1398

Abstract

The cross-sectional dimensions of wood are limited because they experience swelling and shrinkage, so to obtain large wood dimensions, one way to do this is lamination. Laminated wood beams are combined with reinforced concrete plates to produce a structural form where the wood is protected by a concrete plate. The wood lamination system in this research uses adhesive bolts with Carbon Fiber Reinforced Polymer (CFRP) as external reinforcement. The test beam consists of a normal beam without reinforcement (BLN-00) and a test beam with external reinforcement with a CFRP layer (BLF-01). This research was carried out experimentally using the Displacement Control method. The test beam was loaded with a monotonic static concentrated load in the middle of the span with a constant speed of 0.05 mm/s until failure. The results showed that the normal test beam without reinforcement (BLN-00) had a strength of 52.43 kN, stiffness of 7.06 kN/mm, and ductility of 13.42. Meanwhile, the beam with CFRP reinforcement (BLF-01) has a strength of 65.81 kN, stiffness of 9.33 kN/mm, and ductility of 16.85. Apart from that, the maximum shear stress value that occurs in normal beams is 4.23 MPa and in beams with CFRP reinforcement it is 1.95 MPa.
Perencanaan Sistem Penyediaan Air Bersih Mukti Desa Tenjowaringin Kabupaten Tasikmalaya Kusumah, Desty Rahmawati; Permana, Sulwan; Hantari, Anjas Ninda
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1400

Abstract

Clean water is the main source for society. However, not all areas have sufficient availability of clean water, for example Pangkalan Village and Pasir Mukti Village which are located in Tenjowaringin Village. In this research, planning for the availability of clean water was carried out for the people of Pangkalan village and Pasir Mukti village. The spring used in the planning was the Cipeuti spring, the water source of which had not been utilized at all. The method used to determine the amount of discharge is the volumethic method by collecting spring water, then the water is raised to the distribution reservoir using a pump, then the water is distributed using a gravity system. However, the method that will later be used for distribution of clean water is planned using the help of Epanet 2.2 software. The results of the analysis of water needs until the 2033 plan year showed that the population was 474 people using the geometric method, for a water discharge of 13,140 lt/day (0.16 lt/sec) with Cipeuti water availability until 2033, namely 0.17 lt/sec. The results of the calculations show that the availability of clean water in Cipeuti can meet the water needs of the people of Pangkalan village and Pasir Mukti village. For the dimensions of the reservoir used, namely 2.5 m x 2.5 m x 3 m and the dimensions of the planned reservoir are 2.5 m x 2.5 m x 3.5 m, the type of pipe used is HDPE pipe, where the value of the pipe coefficient uses Hazen Williams values ​​which will later be applied in the Epanet 2.2 application for pipe distribution.
Evaluasi Ketersediaan Air Baku pada Bendung Gunungcupu Yulianti, Jihan; Permana, Sulwan; Nugraha, Mochammad Suva
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1403

Abstract

The availability of water at Gunungcupu Dam is very much needed to support various community activities in the service area. One of the causes of the reduced supply of clean water is damage to pipes due to natural disasters, such as what happened in 2022, there was a flash flood that overflowed the Citanduy River located in the Gunungcupu Bend area and caused the main raw water transmission pipe belonging to PDAM Tirta Galuh Ciamis to reach the Gunungcupu Intake. cut off for 100 meters, as a result the water supply in the Gunugcupu Dam service area was disrupted. So this research was carried out to determine the availability of raw water, find out the projected need for clean water in 2042, and find out the planned flood discharge at Gunungcupu Dam. The method used is a quantitative approach. To determine the availability of raw water, you need to process actual discharge data using the Weibull equation, calculate population projections using arithmetic and geometric methods, calculate clean water requirements for domestic needs in 2042, and process rainfall data to analyze the planned maximum discharge using the Unit Hydrograph method. Nakayasu Synthetic and Gama I Synthetic Unit Hydrograph. The calculation results show that water availability at the Gunungcupu Dam is 730 liters/second. The need for clean water in 2042 for the three sub-districts is 302.66 liters/second. Based on these results, the water supply from Gunungcupu Dam can meet the clean water needs for Ciamis, Baregbeg, and Cijeungjing Districts in 2042. Then the flood discharge planned by the Nakayasu HSS method for Gumbel probability at Q100 is 930,484 m3/second and for Log Normal probability at Q100 amounting to 786,302 m3/second, while the planned flood discharge for the HSS Gama I method for Gumbel probability in Q100 is 833,381 m3/second and for Log Normal probability in Q100 is 707,002 m3/second. Based on these results, it can be concluded that the largest maximum discharge is the HSS Nakayasu method for Gumbel probability, so the HSS Nakayasu method is good for planning the safety of water structures against flooding.
Perencanaan Distribusi Air Sumur Bor Desa Cibunar Kecamatan Cibatu Rosidin, Ahmad; Permana, Sulwan
Jurnal Konstruksi Vol 22 No 1 (2024): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.22-1.1404

Abstract

Clean water plays a very important role in everyday life. However, the dry season causes a water crisis in several areas of Garut Regency, one of which is Cibunar Village, Cibatu District. The aim of this research is to plan drinking water discharge needs, storage tank capacity and water distribution planning by maximizing the potential of drilled well water as a source of raw water. There is a need for distribution engineering with PVC pipe networks and combined drainage systems. In planning this network, population projections use the geometric method for the 2023-2042 plan year with a population at the end of the plan year of 11,191 people, the total water requirement per person is 60 liters/person/day. The total domestic water requirement for one village is 671,460 liters/person/day or 7.77 liters/second at the end of the 2042 projected plan year. The complete data was then analyzed using the EPANET 2.2 application, the results of the analysis obtained the average pressure 25.23 m, average head loss 0.56 km/m and average flow speed 0.18 m/s and from the results of this analysis the ideal diameter of the distribution pipe is 100-200 mm. Meanwhile, the results of running with the peak hour scenario obtained a flow of 879 liters/hour. In planning the pump specifications required a total head of 159.34 m and a power of 45.41 Kw with pump type CR 120-5-1. Cibunar Village distribution network planning at the end of the planning year can meet community needs during the planning period.

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