Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil 2021-02-04T18:07:35+00:00 Dr. Febrian Hadinata, ST, MT Open Journal Systems <table style="background-color: #ebebe0;"> <tbody> <tr> <td><span style="font-size: small; color: #000000;">Journal Title</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil</span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">Initials</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;Cantilever</span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">Frequency</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;2 issues per year (April and October)</span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">DOI</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href="" target="_blank" rel="noopener">10.35139</a> by <img src="/public/site/images/Cantilever/crossref-logo-landscape-100.png" width="50"></span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">p-ISSN</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href=";1180426465&amp;1&amp;&amp;" target="_blank" rel="noopener">1907-4247</a></span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">e-ISSN</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href=";1447136064&amp;1&amp;&amp;" target="_blank" rel="noopener">2477-4863</a></span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">Editor in chief</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href="" target="_blank" rel="noopener">Dr. Febrian Hadinata, ST, MT</a></span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">Publisher</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href="" target="_blank" rel="noopener">Department of Civil Engineering and Planning, Sriwijaya University</a></span></td> </tr> <tr> <td><span style="font-size: small; color: #000000;">Citation</span></td> <td><span style="font-size: small; color: #000000;">&nbsp;<a href="" target="_blank" rel="noopener">Sinta</a> | <a href=";hl=id" target="_blank" rel="noopener">Google Scholar</a></span></td> </tr> </tbody> </table> <p><span class="tlid-translation translation" lang="en"><strong><br>Cantilever: <em>Jurnal Penelitian dan Kajian Bidang Teknik Sipil </em></strong>is a research journal and study in civil engineering that presents research results in the fields of <strong>building and structural engineering, transportation, water resources engineering and management, geotechnical engineering, construction engineering and management, environmental engineering, and architecture</strong>.</span></p> <p><span class="tlid-translation translation" lang="en">The journal was first published in 2006 in the printed version. Since 2015, Cantilever has been published both in the printed and online version (e-journal). For the online version, previously the journal can be accessed at <a href="" target="_blank" rel="noopener"></a>, but <strong>since Vol. 8 No.2 (2019)</strong>, the journal is published at <a href=""></a>.&nbsp; This journal is managed and published by the <a href="" target="_blank" rel="noopener">Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University</a>. The journal is published twice a year in <strong>April and October</strong>. <br></span></p> <p><span class="tlid-translation translation" lang="en">The editors invite experts, academics (lecturers and students), researchers, observers, and practitioners to submit their papers in the form of scientific papers that have never been published or are not in the process of publication in other print media. The instructions for writing and submitting the manuscript for the authors can be read in the back cover and author guidelines page. The submitted text will be reviewed by expert editors and reviewers, and then processed by the editorial board for publication. The editors have the right to edit the contents of the text without changing the intent and meaning. The contents of the paper and the accuracy of the data are entirely the responsibility of the authors.</span></p> Pengaruh Penambahan Pasir Terhadap Daya Dukung Subgrade Jalan 2020-12-14T07:20:11+00:00 Yudha Fardyansah Nurly Gofar <p>The performance of flexible pavement is highly influenced by the quality of subgrade material. In Palembang, the foundation soil is usually consisted of clay which is sensitive to change in water content caused by rainfall as well as inundation. This paper presents results of laboratory study on the effect of adding sand to clay to be used as subgrade material for urban roads.&nbsp; California Bearing Ratio (CBR) values were used as indication of strength improvement of the subgrade in unsoaked and soaked conditions. The suitability of the stabilized soil for use as subgrade of pavement construction in response to normal and inundated conditions was further assessed through field verification using Dynamic Cone Penetrometer. Results of both laboratory and field studies indicated that addition of 21% sand by dry weight give the most improvement in terms of CBR value. In this case, the CBR unsoaked increased from 8% to 18% while the CBR soaked increased from less than 3% to 8%. Field verification showed that the CBR of compacted natural soil decreased from 8% to 2% after rainfall while the CBR of the sand stabilized soil decreased from 17% to 8%. Thus the sand stabilized clay is expected to perform adequately even after subjected to rainfall and inundation.</p> 2020-12-14T00:33:29+00:00 Copyright (c) 2020 Yudha Fardyansah, Nurly Gofar Peningkatan Daya Dukung Pondasi pada Tanah Lempung dengan Perkuatan Kolom Tanah 2020-12-14T07:19:47+00:00 Ratna Dewi Hanafiah Ridho Ustadi <p>One of the problematic soils for construction if the soil is used as a foundation for a construction is clay soil which has relatively low shear strength and bearing capacity. Therefore, it needs an improvement effort to increase the strength of the clay soil. The reinforcement soil column is an alternative effort to improve the soil. This paper presents the results of laboratory-scale experimental on the reinforcement modelling of clay soil columns mixed with 6% rice husk ash (RHA). Modelling was carried out with 6 variations of column groups with constant column length of 67cm. The first three variations are the variation in the distance between columns (s/d) with a fixed diameter of 8 cm. The other three variations are column diameter variations with a fixed s/d ratio. The results showed that the larger the distance between the columns, the smaller the bearing capacity of the soil foundation. If the s/d ratio is constant, it is found that the larger the column diameter, the greater the bearing capacity of the soil foundation. The maximum ultimate bearing capacity of the soil is achieved in variations with a column diameter of 12cm and a distance between columns of 30cm (s/d = 2.5) with a value of 39.56 kPa. This bearing capacity provides a BCR value of 3.75% or almost 4 times the bearing capacity of the unreinforced foundation.</p> 2020-12-14T00:44:11+00:00 Copyright (c) 2020 Ratna Dewi Studi Penggunaan Pecahan Dinding Bangunan pada Beton Aspal Lapis Aus 2020-12-14T07:20:36+00:00 Lie Ing Tan Yohanes Sebastian <p>Pavement has become important to people mobility in Indonesia, especially in urban areas. Vehicle mobilization will experience less obstacles if the road pavement conditions are in good quality. At the moment, additives, fillers or road material substitutes are quite expensive and are limited, therefore, research needs to be carried out to find materials which can improve the quality of pavement such as increasing its resistance or stability and flow. The purpose of this study was to analyze the benefits of using wall fragments as the fillers in asphalt concrete wearing course. The effect of using wall fragments as a substitute for rock ash on the value of Marshall parameters is studied, as well as the various levels of wall fragments addition that can produce the greatest stability. In this study, four levels of wall fragments were used as fillers: 0%, 25%, 50% and 100%. Based on the results analysis, it was concluded that the use of wall fragments as fillers in asphalt concrete can increase the following parameters: VMA, VIM, stability, and flow, but it reduces the VFB value. In addition, the use of 25% levels of wall fragments in asphalt concrete produces the greatest stability value, which is 1622.47 kg.</p> 2020-12-14T00:00:00+00:00 Copyright (c) 2020 Lie Ing Tan, Yohanes Sebastian Ketersediaan dan Pola Pemberian Air pada Daerah Irigasi Endikat Bengkok 2020-12-16T07:26:57+00:00 Reni Andayani Ayu Marlina <p>Endikat Bengkok irrigation area located in Muara Enim with area of 1,140 ha. The Endikat Bengkok Irrigation channel used to irrigate rice fields in four villages, namely Segamit, Siring Agung, Arimantai and Fajar Bulan, districts of Semendo Barat Ulu. The source of irrigation water are available in the Endikat Bengkok River, which is a subsidiary of the Lematang River. The purpose of this study was to analyze the water availibility in the Endikat Bengkok River for the adequacy of the Endikat Bengkok Irrigation Area, and the appropriate water provision group. Primary data was collected in the form of the planting group, secondary data in the form of rainfall data and climatological data. The calculation of evapotranspiration used the Penman method and the calculation of water availability used the F.J. Mock. From the calculation of water availability showed that the maximum value occurred in April amounted to 48.15 m<sup>3</sup> / s and the minimum value occurred in October amounted to 2.23 m<sup>3</sup> / s. The availability of water for irrigation (80% dependable flow) is not sufficient to irrigate the entire Endikat Bengkok Irrigation Area. The most suitable water supply group by rotating based on the provisions of the irrigation planning criteria.</p> 2020-12-15T15:10:07+00:00 Copyright (c) 2020 Reni Andayani, Ayu Marlina Evaluasi dan Analisis Kolam Retensi Pengendalian Banjir: Studi Kasus Kolam Retensi Brimob Kota Palembang 2021-01-11T13:52:53+00:00 Tri Fitriana Taufik Ari Gunawan Imroatul Chalimah Juliana <p>Brimob retention basin located within the Sekanak Sub-watershed system, which is a flood-prone point. Administratively, the Brimob retention basin area is a part of the Sub-district of Ilir Barat I. The research method used is computer modeling. The steps taken are: data collection, hydrological analysis, cross-sectional analysis, hydrological and hydraulic modeling using pumps. The Brimob retention basin can accommodate a volume of water up to 115,103.73 m<sup>3</sup>, up to an elevation of the embankment of + 4.30 m. The magnitude of designed rainfall is R2 = 118.78 mm, R5 = 144.78 mm, R10 = 161.99 mm and R25 = 183.73 mm. The peak discharge of each return period is Q2 = 6.30 m<sup>3</sup> / s, Q5 = 7.67 m<sup>3</sup>/s, Q10 = 8.59 m<sup>3</sup>/s and Q25 = 9.74 m<sup>3</sup>/s. To assess the effectiveness of pump operation, 2 (two) pumping capacities are simulated, namely: 250 l / sec and 500 l / sec, each used 2 (two) pump units. The simulation used a pump with a capacity of 500 l / sec, and the amount of discharge (inflow) for each return period is as input. The conclusion is that the use of a pump with a capacity of 500 l / sec can overcome excess water volume and avoid runoff and effective in dealing with the excess water in the Brimob retention basin.</p> 2021-01-10T14:03:42+00:00 Copyright (c) 2021 Tri Fitriana Analisis Kapasitas Kolam Retensi Untuk Pengendalian Banjir di DAS Buah Kota Palembang 2021-01-11T13:52:26+00:00 Febrinasti Alia Sakura Yulia Iryani Nuzula Ramadhanti <p>According to Public Works Office of Palembang City, Buah Watershed is listed as one of priority areas that requires immediate flood management actions. Flat terrain, high rainfall intensity, tidal fluctuation worsens by massive land use change, are major causes that increase surface water runoff. Therefore, retention basins as one of technical solutions are expected to accommodate runoff discharge and reduce flood. This study aims to analyze the existing hydrological conditions of Buah watershed and to simulate the effectiveness of designed retention basins on peak flow reduction. Hydrological analysis using SCS Unit Hydrograph Model, HEC-HMS combine with spatial analysis using GIS in 26 subcatchment areas resulted on peak discharges range from 1,27 m<sup>3</sup>/s – 15,71 m<sup>3</sup>/s. Furthermore, there are ​​12 proposed retention basins within study area ranges from ​​0,580 Ha – 3,967 Ha that are designed to reduce the peak discharge. Simulation result of flood discharge reduction using HEC-HMS indicates that the effectiveness of retention basins in proposed locations varies from 0,03% - 80,05% depending on watershed areas, land availability, and the depth of retention basins.</p> 2021-01-10T14:21:00+00:00 Copyright (c) 2021 Febrinasti Alia, Sakura Yulia Iryani Pemodelan Perkuatan Menggunakan Bambu Untuk Daya Dukung Pondasi Dangkal pada Tanah Gambut 2021-02-04T18:07:10+00:00 Yulindasari Sutejo Sutanto Muliawan Ratna Dewi Febrian Hadinata Budi Ariawan Reffanda Kurniawan Rustam <p>Some of the unfavorable characteristics of peat soil are low bearing capacity and high compressibility. The reinforcing material used in this research which functions the same as geogrid are bamboo materials (grids and woven). The bamboo material used aims to determine the carrying capacity and reduction of shallow foundations on peat soil before being reinforced and after being reinforced. Bamboo matting and rectangular patterned bamboo grids. Laboratory scale testing were used as the research methodology. The peat soil sampling location came from the area of Dusun III Banyu Urip, Banyuasin regency, South Sumatra province. The bamboo material is obtained from the Seberang Ulu area, Palembang City and sand &nbsp;is obtained from the sand depot in the Musi II area, Palembang City. The results of laboratory testing show that the addition of the number of reinforcement layers and the effective layer depth distance will give a greater bearing capacity ratio (BCR) value. The bearing capacity value of the shallow foundation before being reinforced on peat soil using Terzaghi's analysis is 45.232 kpa. Then, after testing the variation in the depth of the layer d = 0b; d = 0.25b; and d = 0.5b with the number of layers 1 layer, 2 layers and 3 layers obtained a variation which gives the highest bearing capacity value of layer depth variations d = 0.25b with the number of layers of 3 layers. The bearing capacity value is 94 kpa with a BCRvalue of 2.08 (percent increase of 107.96 %).</p> 2021-02-03T23:38:07+00:00 Copyright (c) 2021 Yulindasari Sutejo, Sutanto Muliawan, Ratna Dewi, Febrian Hadinata, Budi Ariawan, Reffanda Kurniawan Rustam Analisis Pasang Surut di Perairan Sungai Musi Menggunakan Metode Least Square (Studi Kasus Intake Air Baku Sistem Gandus Kota Palembang) 2021-02-04T18:07:35+00:00 Agus Saputra Taufik Ari Gunawan Imroatul Chalimah Juliana <p>The tides, which affect the water level of the Musi River causes some problems to occur in Palembang City. One of the main problems related to the tides of the Musi River, especially the low tide, is the failure of the raw water intake building of Regional Drinking Water Company&nbsp; (PDAM) Tirta Musi, Palembang City to operate. At a certain time the river water level recedes, the minimum water level entering the intake pump room is lower than the safe level for the pump to run. In this study, an analysis of the tides of the Musi River was carried out using the Least Square method to evaluate the design of the raw water intake building for the Gandus system to disclose whether it meets the minimum elevation requirements for pump operation. The field observations of the tides were carried out for 15 days for every 1 hour to obtain the primary data for this study using the Hobo Water Meter. The results of this study indicate that the type of the tides in the location of the study is a mixed tidal type with a Formzahl Value of 2.01. 4. Against the design plan of the gandus system of raw water intake, there is a chance that the elevation of the river water level is at 0.5 m from the end of the pump suction pipe, in which the pump cannot function.</p> <p>&nbsp;</p> 2021-02-03T23:11:40+00:00 Copyright (c) 2021 Agus Saputra, Taufik Ari Gunawan, Imroatul Chalimah Juliana