Jurnal Rekayasa Sipil dan Desain
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Kajian Laboratorium Pemanfaatan Tanah Merah Terstabilisasi Kapur Sebagai Bahan Pengikat Lapis Pondasi Agregat Kelas B
Get PDFAbstractIn class B aggregate foundation layer mixtures, the utilization of red soil can be used as an alternative material for a class B aggregate foundation layer binder. Aggregate binder is used to increase the bearing capacity of Class B aggregate foundation course. Red soil has shortcomings in its plasticity index value, therefore red soil needs to be stabilized with lime with the addition of a ceritain percentage to meet the standard plasticity index value of class B aggregate foundation layer requirement. The purpose of this study was to determine the utilization of lime-stabilized red soil as a binder for class B aggregate foundation layers by comparing CBR values. The method used was to compare the CBR values of class B aggregate foundation layer 100% red soil with a mixture of lime-stabilized red soil with the addition of 15% lime.The results of the CBR research of class B aggregate foundation layers show the addition of 15% lime stabilized red soil with a CBR value of 82,9%. For class B aggregate foundation layer 100% red soil, the CBR value was 69,7%.Keywords: Class B aggregate foundation layer, stabilized red soil, CBR
Evaluasi Kinerja Struktur Gedung Bertingkat dengan Metode Analisis Respon Spektrum (Studi Kasus: Gedung 5 Rumah Sakit Pendidikan Perguruan Tinggi Negeri (RSPTN) Universitas Lampung)
Get PDFAbstractThe high occurrence rate of damage to buildings and infrastructure due to earthquakes necessitates a review or analysis of earthquake-resistant structural planning. Considering the importance of hospital functions, it is necessary to conduct an evaluation of the performance of the building structure under seismic loads using the latest standards to determine the structural suitability of the building. The level of safety in high-rise buildings is considered crucial to be known, so in this study, a case study was conducted on Building 5 of RSPTN UNILA using the method of response spectrum dynamic analysis. The structural analysis was calculated using a commercial structural analysis program in a three-dimensional model to determine whether the structure is safe or not according to the inter-storey drift limits specified in SNI 1726:2019. The results of the analysis show that as the earthquake acceleration increases, the drift value in the building structure also increases. The drift values obtained for the evaluated building are 15.5850% in the X direction and 19.3563% in the Y direction compared to the allowable drift. The drift (Δ) occurring in the building structure satisfies the allowable story drift (Δa) requirements according to SNI 1726:2019.Key words : structural performance, earthquake, dynamic analysis, spectrum response. AbstrakTingginya tingkat terjadinya kerusakan pada bangunan dan infrastruktur akibat terjadinya gempa membuat perlu adanya peninjauan atau analisis terhadap perencanaan struktur tahan gempa. Mengingat pentingnya fungsi rumah sakit maka perlu diadakannya evaluasi kinerja struktur gedung terhadap beban gempa dengan standar terbaru untuk menentukan kelayakan struktur gedung. Tingkat keamanan gedung bertingkat tinggi dinilai sangat penting untuk diketahui sehingga dalam penelitian kali ini dilakukan studi kasus pada Gedung 5 RSPTN UNILA dengan menggunakan metode penelitian analisis dinamik respon spektrum. Analisis struktur dihitung menggunakan program analisis struktur komersial dalam model tiga dimensi bertujuan mengetahui apakah struktur aman atau tidak sesuai batas simpang antar tingkat dalam SNI 1726:2019. Hasil dari analisis yang dilakukan diketahui bahwa semakin besar percepatan gempa, maka nilai drift atau simpangan akan semakin besar juga pada struktur gedung. Nilai drift atau simpangan ini dipengaruhi juga oleh ketidakberaturan vertikal, sistem struktur, geometri gedung, dan fungsi gedung. Simpangan yang terjadi pada struktur gedung memenuhi syarat simpangan antar tingkat izin sesuai dengan SNI 1726:2019.Kata kunci : kinerja struktur, gempa, analisis dinamik, respon spetru
Analisis Waste Material Tulangan Pelat Menggunakan Building Information Modeling (BIM) pada Proyek Pembangunan Gedung Kantor Baru Pengadilan Agama Gedong Tataan
Get PDFKemajuan teknologi membuat manusia harus bisa beradaptasi dengan teknologi seperti Building Information Modelling (BIM). Salah satu permasalahan dalam proyek konstruksi yaitu adanya waste material. Penelitian ini dilakukan di Proyek Pembangunan Gedung Kantor Baru Pengadilan Agama Gedong Tataan. Tujuan penelitian ini yaitu menghasilkan volume total dan berat material tulangan pelat, mengetahui perbandingan waste material tulangan tipe 1 dan 2, serta mengetahui penyebab terjadinya waste material pada proyek ini. Metode penelitian yang digunakan yaitu kuantitatif eksperimental murni serta menggunakan software Autodesk Revit dan 1D Cutting Optimization Pro. Berdasarkan hasil analisis didapatkan berat total volume material pelat sebesar 34808,74 kg untuk tipe 1 dan 28824,59 kg untuk tipe 2. Untuk persentase berat material, tulangan tipe 2 lebih hemat 17,19% dibanding tipe 1. Untuk persentase wastematerial, tulangan pelat tipe 2 lebih hemat 84,12 % dibandingkan tipe 1. Berdasarkanwaste level, tulangan pelat tipe 1 D6 sebesar 27,44 %, D10 sebesar 0,20% serta tulangan pelat tipe 2D6 sebesar 3,08%, D10 sebesar 0,48%. Sehingga tulangan pelat tipe 2 D6lebih kecil 24,36 % dibandingkan tipe 1. Tulangan pelat tipe 1 D10 lebih kecil 0,28 % dibandingkan tipe 2. Penyebab terjadinya waste material pada penelitian ini karena adanya perbedaan pola pemotongan pada tulangan. Kata kunci : Sisa Material, Building Information Modeling (BIM), Autodesk Revit, Software 1D Cutting Optimization Pro, Volume Material
Studi Eksperimental Pengaruh Substitusi Sebagian Agregat Kasar Dengan Recycled Coarse Aggregate (RCA) Terhadap Kuat Tekan Dan Kuat Tarik Belah Beton Mutu Normal
Get PDFThe availability of crude aggregates on the market is increasing, and the greater waste of the construction industry is concrete, one of which is testing Laboratory Materials and Construction, Engineering Faculty, Lampung University. Research is required to identify the compressive strength value, split tensile strength value, volume weight and the effect of the age correction factor of concrete when partial replacement of coarse aggregate with Recycle Coarse Aggregate (RCA) has a design compressive strength of 25 Mpa and the test object is a cylinder with a 150x300mm.Based on the analysis of research data, it was found that from each factor of concrete age 7, 14 and 28 days as well as variations in partial substitution of coarse aggregate with a content of 25%, 50% and 100% RCA experienced a decrease in the value of the compressive strength and split tensile strength of concrete at each test age compared to the content of the concrete 0% RCA. For compressive strength values with average values at the age of RCA content respectively 0%, 25%, 50% and 100%, namely the age of 7 days 23,03 MPa, 22,57 MPa, 18,63 MPa and 16,71 MPa, 14 days 28,29 MPa, 28,11 MPa, 27,48 MPa and 21,79 MPa and 28 days 28,53 MPa, 28,16 MPa, 27,90 MPa and 27,74 MPa. For the value of the split tensile strength of concrete with an average value at the age of RCA content of 0%, 25%, 50% and 100%, namely the age of 7 days is 2,40 MPa, 2,27 MPa, 2,09 MPa and 1,79 MPa, at 14 days 2,71 MPa, 2,67 MPa, 2,49 MPa and 1,92 MPa and at 28 days 2,81 MPa, 2,78 MPa, 2,72 MPa and 2,48 Mpa
Perencanaan 4D Scheduling Simulation Dengan Menggunakan Building Information Modeling (BIM) Pada Gedung 6 (Enam) Rumah Sakit Pendidikan Perguruan Tinggi Negeri Universitas Lampung
Get PDFAbstractThe use of Building Information Modeling (BIM) is an alternative solution to optimize the time for each step of work in a project. This study aims to determine the duration of scheduling with the normal and overtime method accompanied by the addition of heavy equipment and to determine the stages of planning with the application of 4-Dimensional BIM. The analytical method used is the implementation of a 4D Scheduling Simulation in Building 6th of the State University Education Hospital (RSPTN), University of Lampung. The calculation result by using the scenario of labor use with a normal duration of 8 hours/day showed that the completion of the work takes 272 days. After crashing with the addition of working hours (overtime) for 3 hours and the addition of heavy equipment, the duration was reduced to 200 days with a difference of 72 days. Based on this research, it can be concluded that the use of crashing method increases time efficiency by 36% higher than duration planning using the normal method and the application of BIM 4D can provide solutions that can be used as a reference in understanding engineering and construction plans.Keywords: Building Information Modeling (BIM), 4D Scheduling Simulation, Building 6th RSPTNAbstrakPenggunaan Building Information Modeling (BIM) merupakan solusi alternatif untuk pengoptimalan penggunaan waktu tiap tahap pekerjaan dalam suatu proyek. Penelitian ini bertujuan untuk memodelkan dan mengetahui durasi penjadwalan dengan metode normal dan lembur yang disertai penambahan alat berat serta mengetahui tahapan perencanaan dengan penerapan BIM 4 Dimensi. Metode analisis yang digunakan yaitu dengan penerapan 4D Scheduling Simulation pada Gedung 6 Rumah Sakit Pendidikan Perguruan Tinggi Negeri (RSPTN) Universitas Lampung. Hasil perhitungan dengan menggunakan skenario penggunaan tenaga kerja dengan durasi normal selama 8 jam/hari menunjukkan bahwa penyelesaian pekerjaan membutuhkan waktu selama 272 hari. Setelah dilakukan crashing dengan penambahan jam kerja (lembur) selama 3 jam serta penambahan alat berat didapat pengurangan durasi menjadi 200 hari dengan perbedaan selisih waktu 72 hari. Berdasarkan penelitian ini diperoleh kesimpulan bahwasannya penggunaan metode crashing meningkatkan efisiensi waktu 36% lebih tinggi dibandingkan dengan perencanaan durasi menggunakan metode normal serta penerapan BIM 4D dapat memberikan solusi yang dapat dijadikan acuan dalam pemahaman teknik dan rencana konstruksi.Kata kunci: Building Information Modeling (BIM), 4D Scheduling Simulation, Gedung 6 RSPT
Follow-Up Queue Impact Due to The Closures of Perintis Kemerdekaan Railroad Crossing on Vehicle Velocity Decrement of Gatot Subroto Street
No full textThe closures of railroad crossing on Perintis Kemerdekaan Street frequently cause vehicle queues on Gatot Subroto Street. The density that happens on Perintis Kemerdekaan Street impacts on the occurrence the road constringency and vehicle velocity delay. The results with four hours of observation, the delay values can be concluded with shockwave analysis. 20,72 km/h is determined as for the value of forwarding forming shockwave (ωda) in morning observation and 9,08 km/h in the afternoon; with 1,32 km/h of backward forming shockwave (ωab) in the morning and -1,07 km/h in the afternoon; also forward recovery shockwave (ωdc) in the morning is 5,17 km/h and 1,98 km/h in the afternoon; as well with -10,64 km/h as the value for backward recovery shockwave (ωcb) in the morning and -4,10 km/h in the afternoon; as for the frontal stationary shockwave (ωac) the value is 4,73 km/h in the morning and 1,75 km/h in the afternoon. The mileage time increment is up from 4,25 to 7,6925 seconds in the morning and from 10,68 to 21,196 seconds in the afternoon
Upaya Peningkatan Daya Dukung Tanah Dasar (Subgrade) dengan Menggunakan Campuran Fly Ash, Bottom Ash dan Silika
Get PDFSoil or subgrade is the place where the construction made by technicians for personal and collective interests stands. Before starting a construction, soils that have low bearing capacity, water absorption and high plasticity can be stabilised by soil stabilisation methods. Soil stabilization may involve the use of chemical stabilization materials. This research aims to determine the effect and get the appropriate comparison of the results of the addition of a mixture of fly ash, bottom ash and silica. This research study was conducted using soil samples from Kalianda subdistrict and stabilization materials in the form of fly ash, bottom ash and silica matured for 24 hours. Tests were conducted at the Soil Mechanics Laboratory and physical and mechanical properties were tested.. Clay soils classified as A-7-5 (AASHTO) and OH (USCS) mixed with 4 different compositions of stabilising materials had different results. Of the 4 compositions, the mixture that has the largest bearing capacity value is only silica. Because the results of the CBR test on the mixture that added silica were greater than the mixture using only fly ash and bottom ash. Fly ash, bottom ash and silica gel are easily found or affordable, but the use of silica can increase costs due to its relatively expensive price, inversely proportional to the very affordable price of fly ash and bottom ash.
Pemodelan Gedung Kuliah Bersama Politeknik Negeri Lampung Menggunakan Building Information Modeling (BIM)
Get PDFBuilding Information Modeling (BIM) is one of the technologies that can present information about building elements through 3D modeling. One of the BIM software that can be used to model buildings in 3D is Autodesk Revit. The purpose of this research is to model the Joint Lecture Building of Lampung State Polytechnic in 3D by applying the BIM concept to obtain the volume of work as a reference for making decisions when operational and maintenance will be carried out and comparing the results obtained with the existing Bill of Quantity (BoQ). The data used in this research refers to the as plan drawing. The modeling process involves setting units, creating grids and levels, creating structural families and modeling them, creating architectural families and modeling them, entering identity data, conducting clash checks, and then issuing the volume of work. This research produces the volume of work on wall paint, doors, windows, tiles (ceramic/granite), and ceilings with scenarios in the form of volume for each room on each floor. Based on the results of this research, it can be concluded that modeling the Joint Lecture Building of Lampung State Polytechnic using the BIM concept with Autodesk Revit 2023 software is a more effective and efficient method because the volume output obtained is not only comprehensive but can be specialized on certain floors or rooms.Key words : Building Information Modeling (BIM), Autodesk Revit, operational and maintenanc
Pengaruh Limbah Plastik Sebagai Bahan Tambah Pengikat Aspal Terhadap Kekuatan Campuran Asphalt Cocrete-Binder Course (AC-BC)
Get PDFAsphalt can be modified using polymers which are classified into four main groups, namely: elastomers, thermoplastics, plastomers and reactive polymers. When polymers are added to the mixture it can increase the strength to a higher level. The purpose of this research is to determine the effect of adding Polyethylene Terephthalate (PET) plastic waste to the Asphalt Concrete-Binder Course (AC-BC) mixture on marshall characteristics which refer to the 2018 Bina Marga specifications. The addition of plastic to the mixture is carried out using a wet method, namely by Add plastic to hot asphalt then mix until homogeneous so that the asphalt and plastic are mixed thoroughly. Marshall characteristics consist of Void in Mix (VIM), Void Mineral Aggregate (VMA), Void Filled Asphalt (VFA), stability, meltability (Flow), and Marshall Quotient (MQ). When adding Polyethylene Terephthalate (PET) plastic with levels of 1%, 2%, 3%, 4% and 5%, the Optimum Asphalt Content (KAO) obtained was 5.68%; 5.56%; 5.45%; 5.35%; and 5.28%. From marshall testing, the addition of Polyethylene Terephthalate (PET) will improve several marshall characteristics, including stability, VIM, VMA, and MQ. The flow and VFA values decreased. Key words : AC-BC, PET, marshall test, Bina Marga 2018 specificationsAspal dapat dimodifikasi dengan menggunakan polimer yang diklasifikasikan menjadi empat kelompok utama, yaitu: elastomer, termoplastik, plastomer, dan polimer reaktif. Ketika polimer ditambahkan ke campuran dapat meningkatkan kekuatan yang lebih tinggi. Tujuan dilakukannya penelitian ini adalah untuk mengetahui pengaruh penambahan limbah plastik Polyethylene Terephthalate (PET) pada campuran Asphalt Concrete-Binder Course (AC-BC) terhadap karakteristik marshall yang mengacu pada spesifikasi Bina Marga tahun 2018. Penambahan plastik kedalam campuran dilakukan dengan cara basah yaitu dengan menambahakan plastik kedalam aspal panas lalu dicampur hingga homogen agar aspal dan plastik tercampur dengan menyeluruh. Karakteristik marshall terdiri dari Void in Mix (VIM), Void Mineral Aggregate (VMA), Void Filled Asphalt (VFA), stabilitas, kelelehan (Flow), dan Marshall Quotient (MQ). Pada penambahan plastik Polyethylene Terephthalate (PET) dengan kadar 1%, 2%, 3%, 4%, dan 5% Kadar Aspal Optimum (KAO) yang didapat ialah 5,68%; 5,56%; 5,45%; 5,35%; dan 5,28%. Dari pengujian marshall, penambahan Polyethylene Terephthalate (PET) akan meningkatkan beberapa karakteristik marshall antara lain stabilitas, VIM, VMA, dan MQ. Untuk nilai flow dan VFA mengalami penurunan. Kata kunci : AC-BC, PET, pengujian marshall, spesifikasi Bina Marga 2018
Perbandingan Antara Regangan Susut yang Terjadi pada Jalan Beton di Iklim Tropis Lembap dan Prediksi ACI 209R-92
Get PDFJurnal ini membahas tentang perbandingan antara prediksi susut ACI 209R-92 dengan susut yang terjadi dalam perkerasan kaku. Penelitian ini dilakukan di Indonesia, yang memiliki iklim tropis lembab dengan suhu dan kelembapan yang tinggi sepanjang tahun. Perilaku beton akan berbeda dengan negara yang memiliki empat musim seperti Amerika Serikat, tempat dimana ACI diterbitkan. Benda uji yang digunakan dalam penelitian ini berukuran 5m × 4,5m × 0.3m. Regangan susut beton didapatkan dari pembacaaan keempat alat vibrating wire strain gauges(VWSG) yang ditanam dalam beton. Pengamatan dilakukan sampai beton berusia 90 hari. Hasil dari regangan beton kemudian dibandingkan dengan prediksi ACI 209R-92. Hasil regangan beton yang terbesar terjadi pada daerah tengah pelat (VWSG 1) dikarenakan daerah tengah memiliki luasan yang berkontak langsung dengan udara sekitar paling besar, jadi suhu dan kelembapan sekitar bisa masuk ke dalam beton dan mempercepat penguapan air yang ada dalam beton. Hasil prediksi dari ACI 209R-92 sekitar 15,6%-36,7% lebih kecil daripada hasil penelitian. Perbedaan ini disebabkan karena lokasi penelitian ini memiliki suhu yang cukup tinggi dankelembapan tinggi karena berada di iklim tropis