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Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil
Published by Universitas Ibn Khaldun Bogor
ISSN : 35132615     EISSN : 2655934X     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil adalah jurnal yang mempublikasikan hasil-hasil penelitian, ulasan ilmiah, teori dan aplikasi serta informasi lain di bidang ilmu pengetahuan, teknologi, dan sains (IPTekS), terutama teknik sipil, lingkungan, dan perencanaan wilayah-kota.Jurnal Komposit terbit dua kali dalam setahun. Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil is a journal that publishes research results, scientific reviews, theory and applications as well as other information in the fields of science, technology and science (IPTekS), especially civil engineering, environment, and urban planning. Jurnal komposit issued biannually. Articles to be published in the Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil are compiled from articles prepared by the author(s) and sent to the editorial board of Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Departement of Civil Engineering, Faculty of Engineering and Science, Universitas Ibn Khaldun Bogor. Articles should be written in English or Bahasa Indonesia. Research scope in general is civil engineering and environmental engineering study.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 208 Documents
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Analisis Stabilitas Dinding Penahan Tanah Saluran Irigasi Situ Bala, Desa Purwasari, Kecamatan Dramaga, Kabupaten Bogor Assiddiqy, Mohammad Hasby; Syaiful, Syaiful; Alimuddin, Alimuddin; Muktadir, Redho; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.8295

Abstract

ABSTRAKDinding penahan tanah adalah suatu struktur yang dibangun untuk menahan tanah lateral ketika tanah mengalami perubahan dalam elevasi, dan melampaui sudut geser dalam tanah. Dinding pengaman tebingan yang terletak tepat di Situ Bala, Desa Purwasari, Kecamatan Dramaga telah mengalami kerusakan pada bagian dasar strukturnya terutama pada bagian yang terkena sistem irigasi sehingga perlu dilakukan perbaikan terhadap dinding penahan tanah eksisting. Tujuan penelitian ini adalah untuk menganalisis kondisi lereng akibat tergerus oleh aliran udara yang mengakibatkan terjadinya longsor, merencanakan dinding penahan tanah agar memiliki faktor keamanan yang cukup, dan menghitung kapasitas daya dukung tanah. Metode yang digunakan dalam penelitian ini adalah Metode Rankine .Hasil analisis menunjukkan perlindungan terhadap guling Fs= 0.86 < 1,5 (tidak aman terhadap geser Fs = 2.5119 > 1,5 (aman), dan analisis ketahanan daya dukung tanah qtoe = 12419.5895 < Qall= 4139.8631 (aman) dan qhell = 31.4263 (aman).  Kata kunci: Stabilitas, dinding penahan tanah , Metode Rankine ABSTRAKA retaining wall is a structure constructed to resist lateral soil when the soil undergoes a change in elevation and exceeds the angle of shear in the soil. The cliff safety wall which is located right at Situ Bala, Purwasari Village, Dramaga District, has suffered damage to the basic part of the structure, especially the part affected by the irrigation canal so that it is necessary to repair the existing retaining wall. The purpose of this study was to analyze the condition of the slope, where the air flow above it eroded which resulted in landslides changing the channel so that it was necessary to redesign the existing retaining wall, plan the retaining wall to be safe against shear conditions, overturning, and the carrying capacity of the soil. The method used in this study is the Rankine Method. The results of the analysis show resistance to overturning Fs= 0.86 < 1.5 (unsafe against shear Fs = 2.5119 > 1.5 (safe), and soil bearing capacity analysis qtoe = 12419.5895 < Qall= 4139.8631 (safe) and qhell = 31.4263 ( safe). Kata kunci: Stabilitas, dinding penahan tanah, Metode Rankine
Studi Penataan Kawasan Simpang Ciawi sebagai Simpul Transportasi Ashab, Muhammad Mauludhy; Murtejo, Tedy; Alimuddin, Alimuddin; Sudrajat, Endang
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.8391

Abstract

Abstract: In 2016 Bogor City was named the city with the 2nd worst traffic in the world by the Waze version. One of the worst congestion points in the Puncak Bogor area is the Ciawi Intersection which is located in Harjasari, Bogor Selatan District, Bogor City. The purpose of this study was to determine and analyze the performance of the road sections and intersection performance, to identify and analyze the location of the transportation nodes, and to analyze the land use allocation at the Ciawi intersection. The method used in this study is collecting primary data such as traffic volume, traffic speed, and traffic capacity, through a traffic survey followed by data processing using the MKJI 1997 technical guidelines. Based on the analysis results, there are 2 roads with service level C: the Jagorawi toll road section and the Gadog st., and 2 roads with a service level F: Tajur st., and Cibadak st. As for the level of intersection service, there are 3 roads with an F value: Jagorawi toll road, Cibadak st., and Gadog Puncak st. with successive delays of 156.64 seconds, 282.15 seconds and 243.01 seconds. Tajur st. intersection received a service level score of B’s, with a delay of 6.90 seconds. The planned location of the transportation node at the Ciawi intersection is located at coordinates 6o39'20.89” S; 106o50'49.76” E. The land use allocation in the Simpang Ciawi area is in accordance with the structure and pattern of spatial use based on the Bogor City and Bogor Regency development plans, both related to the planning of transportation nodes in the area and the current use of the land.
Pemanfaatan Limbah Cair Terolah untuk Penyiraman dan Flushing Toilet (Studi Kasus: Rumah Sakit X, Kota Batu, Jawa Timur) Asmawati, Asmawati; Murti, Restu Hikmah Ayu; Purnama, Elanda Rienalda; Isnaini, A'qotrunnada Khalisah
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.8842

Abstract

Rumah sakit menghasilkan limbah cair yang berpotensi dapat mencemari lingkungan. Rumah sakit perlu memiliki instalasi pengolahan air limbah (IPAL) untuk mengolah air limbah agar effluent yang dihasilkan memenuhi baku mutu sehingga aman dibuang ke badan air. Rumah Sakit X Kota Batu merupakan salah satu kegiatan pelayanan kesehatan dimana selama kegiatan beroperasi akan berpotensi menghasilkan limbah berupa air limbah medis dan non medis atau limbah domestik. Rumah Sakit X telah memiliki 2 (dua) IPAL. IPAL Gedung Timur difungsikan untuk mengolah air limbah dari kegiatan yang berada di Gedung Timur dengan kapasitas sebesar 50 m3/hari, sedangkan IPAL Gedung Barat difungsikan untuk mengolah air limbah dari kegiatan di Gedung Barat dengan kapasitas sebesar 150 m3/hari. Effluent air limbah Rumah Sakit X Kota Batu telah memenuhi baku mutu, sehingga tidak mencemari lingkungan disekitar lokasi kegiatan. Air limbah terolah Rumah Sakit X Kota Batu dimanfaatkan untuk penyiraman dan flushing toilet. Penyiraman pada ruang terbuka hijau (RTH) di area Rumah Sakit X Kota Batu pada Gedung Timur seluas 9.246 m2 dan 11.051,5 m2 di Gedung Barat. Sedangkan Pemanfaatan untuk flushing toilet akan disalurkan dalam wc/toilet masing-masing di Gedung Timur dan Gedung Barat.
Pengaruh Perkuatan Kolom Pasir terhadap Kekuatan Tanah Lempung Hernina, Nor Hazriatun; Handayani, Noviyanthy; Saputra, Norseta Ajie
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9127

Abstract

Tanah lempung Kota Palangka Raya mempunyai kemampuan yang sangat rendah untuk mendukung beban. Berdasarkan hal itu maka perlu dilakukan perkuatan tanah (soil reinforcement) dengan memberikan material sisipan ke dalam lapisan tanah tersebut. Penelitian ini dilakukan dengan menggunakan perkuatan kolom pasir (sand column). Model perkuatan ini adalah memasukkan pasir padat ke dalam lubang pada tanah lempung pada diameter tertentu. Penelitian ini dengan melakukan permodelan kolom pasir dengan diameter  yang bervariasi yaitu dia. 1cm, dia. 1,5cm dan dia. 2cm. Adapun pasir yang digunakan adalah pasir Palangka Raya, yang mana pasir tersebut merupakan pasir yang sering digunakan untuk pembangunan di Palangka Raya. Penelitian ini meliputi pengujian sifat tanah asli dan pengujian mekanis seperti Kuat Geser Langsung (Direct Shear Test) dan Kuat Tekan Bebas (Unconfined Compresion Test) melakukan perbandingan sebelum dan sesudah dilakukan perkuatan kolom pasir. Berdasarkan hasil pengujian Kuat Geser Langsung, sesudah dilakukan perkuatan kolom pasir, sudut geser (φ) mengalami peningkatan  dan pada nilai kohesi (c) mengalami penurunan. Nilai kuat geser tertinggi pada dia. 2cm sebesar 0,141 kg/cm² dan kuat geser terendah pada dia. 1,5 cm sebesar 0,132 kg/cm². Hasil Kuat Tekan Bebas (Unconfined Compresion Test) pengujian A dan B menunjukkan nilai kuat tekan bebas (qu) tertinggi pada diameter (í˜) 1,5 cm sebesar 1,89 kg/cm2 dan nilai kuat tekan bebas (qu) terendah pada dia. 2cm sebesar 0,95 kg/cm2. Hal ini menunjukkan bahwa tanah dengan kolom pasir pada dia.1,5 cm lebih efektif dalam meningkatkan kuat tekan bebas (qu).   Kata Kunci : tanah lempung, kolom pasir, kekuatan tanah.
Perancangan Instalasi Pengolahan Air Limbah (IPAL) Komunal di Perumahan Green Hills Recidence, Cilacap Utara, Cilacap Rahmanda, Isyel Kayla; Nuranggraeni, Meita; Stevila, Mumpuni Lutfi; Hidayat, Ridho
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9131

Abstract

Abstract: The increase in population greatly affects the decrease in the carrying capacity of the environment. This is because the population makes a significant contribution to waste generation. Most of the municipal sewage treatment plants are built with a combination of anaerobic-aerobic systems. This study aims to determine the debit for the type of gray water and type of black water, determine the pipe requirements to be used, to design a Communal WWTP design in the research location. The location where the Communal WWTP design will be carried out is Green Hills Residence, Tritih Lor, Kec. Jeruklegi, Cilacap Regency, Central Java. The area of the land area is around 1.5 hectares with a total of 39 houses. In the process of making planning the design of the Communal WWTP that is determined is the projection of population growth in the next 10 years, gray water waste discharge, black water waste discharge, piping calculations, and the dimensions of the tanks in the Communal WWTP. The debit for gray water is 96 liters/day/person and black water is 22.5 liters/day/person. The pipe requirements for one housing include 320 m of fecal pipes, 120 m of domestic pipes, 160 m of tertiary pipes for feces, and 60 m of tertiary pipes for domestic. The design of the Communal WWTP in the research location is designed to consist of two, namely for Gray Water and Black Water
Studi Perbandingan Daya Dukung Aksial Tiang Pancang Tunggal Persegi Berdasarkan Hasil Uji Pembebanan Statik (SLT) dan Uji PDA pada Pembangunan Apartemen Loftville City Kota Tangerang Selatan Taqwa, Fadhila Muhammad Libasut; Muktadir, Redho; Hariati, Feril; Lutfi, Muhamad; Apriliyandi, Ande
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9176

Abstract

Abstract: The deep foundation is one of the most important elements in the construction of high-rise buildings because the weight of the building will be fully borne by the foundation. This study aims to provide an overview of the prediction of the axial bearing capacity of single piles through a mathematical approach based on the results of the tests performed. The design axial bearing capacity is estimated through analysis of soil investigation results (N-SPT test results, DCPT test results, and laboratory investigation results), while the actual axial bearing capacity is obtained through interpretation of the Static Loading Test (SLT) results using the Davisson, Chin, and Mazurkiewicz, and the results of the PDA (Pile Driving Analyzer) load test were analyzed using the CAP-WAP application. The analysis was carried out on single piles with dimensions of 40x40 cm2, located in the Loftville City Apartment development project, South Tangerang City. Based on the results of the analysis that has been carried out, the planned axial bearing capacity is 131.3 tons, while the average carrying capacity based on the results of SLT interpretation on three tested piles using the Davisson, Mazurkiewicz, and Chin methods are 161.7; 205.4; and 98.8 tonnes. The results of the analysis are compared to the results of the PDA test, which shows a bearing capacity value of 290.1 tons, so the BCR values are 65.70% and 45.26% respectively. The BCR value is based on the results of the interpretation of the SLT test successively -respectively by 55.73%, 70.78%, and 34.06%. The BCR value which is not close to 100% may occur due to an error in determining the planned carrying capacity of 131 tons which is far below the actual carrying capacity value based on the PDA test results. The design carrying capacity value is then corrected to 100 tonnes and used as the 100% design load in the static load test so that the interpretation results also show BCR results that are not very accurate.
Analisis Kekuatan AC-WC Bahan Fly Ash Batu Bara sebagai Pengganti Abu Batu dengan Metode Marshall Nurdin, Ade; Erlangga, Erlangga; Nuklirullah, M.
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9190

Abstract

Abstract: The layers contained in flexible pavement, one of which is the Asphalt Concrete-Wearing Course (AC-WC) layer, is a layer that is quickly damaged compared to other layers, because this layer is located at the top and is directly related to environmental conditions and vehicle wheel loads. One of the efforts that can be made to increase the strength of the road pavement structure in the AC-WC layer is by utilizing waste material from burning coal as a substitute for stone ash. The material used is fly ash mixed with successive levels namely (0: 100), (25:75), (50:50), (75:25) and (100:0). The optimum asphalt content (OAC) used was 5.78%. Based on the results of the physical characteristic test using the Marshall test, the fly ash material to be used meets the required specifications. As it is affected by aggregate gradation, bitumen content and compaction process, the flow rate increases simultaneously. The stability value obtained from the asphalt content of 5.781% (10%) variant is 1097.0 kg, higher than the other variants. Only 2 sample variants meet VIM specifications. Obtained optimum asphalt value of 5.75% which is close to the initial optimal asphalt estimated. Key words: Coal Fly ash, Marshall Test, AC-WC, Optimum Asphalt Content, MQ-optimum
Desain Alternatif Struktur Talang Air Beton pada Saluran Sugih, Desa Cibedug, Kecamatan Ciawi Nopiyansah, Muhammad Ilham; Hariati, Feril; Chayati, Nurul; Insan, Muhammad Khaerul
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9436

Abstract

ABSTRACT The provision of water in wet farming is very important to support optimal crop yields. The irrigation system on the Sugih Canal in Cibedug Village, Ciawi, Bogor Regency was affected by a landslide with a depth of 8 meters, which resulted in a 28 meter long canal being cut off. This study aims to plan the construction of reinforced concrete gutters with a size of 60 cm and a height of 80 cm to repair broken points. The design of reinforced concrete gutters refers to SNI 03-2847-2002. It is planned that the floor plate thickness is 20 cm and the channel wall thickness is 15 cm, using concrete with quality K-250 (fc' = 25 MPa). Based on the analysis that has been carried out, the live load is 250 kg/m, the dead load is 748 kg/m, and the factored load is 1297.6 kg/m. The maximum moment (Mmax) that occurs at the pin support is 38,281 kNm. Concrete reinforcement on the channel floor plate is in the form of main reinforcement D12-135, and reinforcement for D8-300. Reinforcement for wall plate is main reinforcement D12-115, reinforcement for D8-255.
Perbandingan Penurunan Elastis Fondasi Tiang Pancang dengan Menggunakan Metode Analitis dan Metode Elemen Hingga Ningsih, Alia Adisetia; Setiawan, Agustinus Agus
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.13757

Abstract

The foundation is part of the lower structure that functions to transmit the superstructure load to the soil base which is strong enough to support it and is usually dominated by the allowable settlement limit, in order to avoid danger to the superstructure. This study aims to analyze the bearing capacity and settlement of driven pile using analytical methods and Finite Element Method using Plaxis software. This study compares variations settlement and axial bearing capacity of piles with 300 mm, 400 mm, and 500 mm diameter. Based on the results obtained, the bearing capacity of the driven pile with plaxis is 20.25 – 26.63% higher than the calculation using the Schmertmann method. In terms of settlement, the results obtained are 3.37 mm for the D 300 mm, 3.29 mm for the D 400 mm, and 3.21 mm for the D 500 mm. All three settlement are still within safe limits.
Analisis Faktor - Faktor Penentu Keberhasilan Proyek Konstruksi Berdasarkan Mutu, Biaya dan Waktu Silalahi, Yunika Indriani; Masthura, Lely; Fahriana, Nina
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.14240

Abstract

The growth of human needs is closely related to construction projects. Construction projects must be handled professionally and with quality management to achieve what you want. This development allowed the emergence of obstacles during project implementation. This research aims to determine the quality, time, and cost factors that determine the success of a construction project. The questionnaire for this study was administered to 31 people directly involved in the project. The analysis used in this study uses the ranking analysis of the most dominant average/mean value. The results of the analysis show that the most dominant factor influencing the success of a construction project is an accurate price estimate with a mean value of 3.61. Based on the quality is administrative documentation with a mean value of 3.45, and the expertise of the operator of each equipment with a mean value of 3.45. based on time is the Schedule plan with a mean value of 3.77. Analysis of the relationship/correlation between cost, quality and time on the success factors of construction projects shows that the magnitude of the correlation coefficient (r) between cost and quality is 0.534, with a significance or probability of 0.002, cost and time of 0.436. which has a significance or probability of 0.001 and time and quality of 0.532 which has a significance or probability of 0.049.

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