Jurnal Rekayasa Sipil dan Desain
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Durabilitas Campuran Asphalt Concrete-Binder Course (AC-BC) dengan Menggunakan Agregat Tanjungan Lampung Selatan
Get PDFRoad damage is one of the problems caused by low material quality. The 2018 Bina Marga General Specifications have required material quality for asphalt mixtures, where good quality materials will produce pavement construction with high stability. This research aims to analyze the durability of the AC-BC (Asphalt Concrete-Binder Course) mixture using local materials from PT Sumber Batu Berkah, Tanjungan District, South Lampung Regency without additives based on the Marshall Testing Method. Based on the results of the research, it was found that the effect of soaking time variations of 0.5 hours, 24 hours, 168 hours, and 672 hours with a standard temperature of 60°C, the sample was soaked for a long time would make the stability and durability values smaller. Then obtained IKS value of 91.58% so it has met the minimum Bina Marga Standard of 90% and shows the longer soaking time, the smaller IKS value will obtained. Then for the IDP value is positive which means that the strength decreases by 0.44% during the soaking period so it meets the standard < 1%. And the IDK value of AC-BC mixture is 19.51 where the IDK value has decreased in strength by 19.51% during the soaking time. This is due to the decrease of stability value against the length time of soaking
Pengaruh Penambahan Serat Baja Terhadap Kuat Lentur Balok Beton Bertulang pada Beton Mutu Normal
Get PDFPenelitian pada skripsi ini merupakan studi eksperimental untuk menyelidiki pengaruh penambahan serat baja terhadap kuat lentur balok beton bertulang pada beton mutu normal. Penelitian ini juga membandingkan pola retak dan pola keruntuhan balok beton bertulang pada beton tanpa serat dan beton dengan campuran serat baja. Penelitian ini menggunakan sampel balok beton bertulang dengan ukuran 15 cm x 19 cm x 170 cm dengan 2 tulangan lentur D-10 mm (2D-10mm) dengan 1 buah sampel balok setiap volume fraction (Vf) 0%, 0,5%, 1% dan 1,5%. Sampel balok beton bertulang mempunyai bentang diantara dua tumpuan sederhana sepanjang 150 cm, dan diuji dengan dua beban titik secara bertahap dari nol sampai dengan runtuh. Pengujian tiap sampel dilakukan 28 hari setelah pengecoran. Dari hasil penelitian didapatkan: (1) Hasil uji kuat tekan tidak mengalami perbedaan yang signifikat dengan adanya penambahan serat baja., (2) Kuat tarik lentur balok beton tertinggi terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 281,42% dari Vf 0%., dan (3) Kuat lentur balok beton bertulang dengan beban maksimum terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 56,64% dari Vf 0%. Penambahan serat baja pada balok beton bertulang menyebabkan balok tersebut menjadi lebih kaku, penambahan serat juga dapat memperbaiki sifat getas pada beton
Tinjauan Tundaan Perjalanan Perlintasan Sebidang pada Segmen Jalan Haji Komarudin Menggunakan Metode Gelombang Kejut
Get PDF AbstrakPerlintasan sebidang jalan rel kereta api pada segmen ruas Jalan H. Komarudin Bandar Lampung sering menimbulkan kemacetan sehingga menyebabkan tundaan dan panjang antrian. Penelitian ini bertujuan untuk mengetahui nilai arus, kecepatan, dan kepadatan lalu lintas yang terjadi di perlintasan sebidang kereta api di Jalan H. Komarudinserta mengetahui besarnya tundaan dengan metode gelombang kejut berdasarkan nilai EKR (Ekuivalen Kendaraan Ringan) yang diperoleh dari metode rasio headway. Perhitungan nilai gelombang kejut berdasarkan model linier Greenshields. Hasil penelitian pada pengamatan menunjukkan peningkatan waktu tempuh dari 11,86 detik menjadi 17,55 detik akibat adanya antrian kendaraan. Sedangkan Gelombang kejut yang terjadi pada ruas Jalan H. Komarudin akibat antrean perlintasan sebidang jalan rel secara berturut-turut adalah sebagai berikut gelombang kejut maju bentukan (ωda) sebesar 14,41 km/jam; gelombang kejut mundur bentukan (ωab) sebesar -2,22 km/jam; gelombang kejut maju pemulihan (ωdc) sebesar 18,53 km/jam; gelombang kejut mundur pemulihan (ωcb) sebesar -5,24 km/jam; dan gelombang kejut maju pemulihan (ωac) sebesar 9,56 km/jam. Kata Kunci: Tundaan, Gelombang Kejut, Ekuivalensi Kendaraan Ringan (EKR), headway, Model Greenshield, Panjang Antrian
Pengaruh komposisi penambahan serat polypropylene terhadap kuat tekan dan kuat lentur self compacting mortar (SCM)
Get PDFAbstractSelf compacting mortar is a mortar which is able to flow under its own weight and completely fill the formwork without the need for external compaction, while maintaining its homogeneity. This study aims to determine the effect of variations in the addition of polypropylene fiber to the compressive strength and flexural strength of self compacting mortar (SCM), as well as to determine the optimum variation of the addition of polypropylene fiber in mixed mortar. In this study, the test specimens were made with a water-cement factor of 0.4 and the ratio between cement and fine aggregate was 1:2.5 and the addition of 2% superplasticizer by weight of cement and the addition of polypropylene fibers with variations of 0%, 0.04%, 0.06%, 0.08%, 0.1% of the volume of the mortar test object. Tests were carried out on specimens aged 28 days. The results showed that the compressive strength of SCM experienced an optimum increase in the addition of 0.04% polypropylene fiber which was 34.81 MPa with an increase percentage of 14.07% of mortar without fiber, while the flexural strength of SCM increased with increasing variations of polypropylene fiber until the increase The optimum variation occurred at 0.1% polypropylene fiber, namely 11.72 MPa with a percentage increase of 26.05% from mortar without fiber. Key words : polypropylene fiber, superplasticizer, compressive strength, flexural strength
Penerapan Building Information Modeling (BIM) Menggunakan Software Autodesk Revit 2019 pada Pekerjaan Struktur (Studi Kasus: Gedung B Fakultas Ekonomi dan Bisnis Universitas Lampung)
Get PDFBuilding Information Modeling (BIM) merupakan teknologi digital di bidang Architecture, Engineering, and Construction (AEC) yang memasukkan semua informasi dalam model tiga dimensi. Perangkat lunak yang dapat mendukung penerapan BIM salah satunya adalah Autodesk Revit. Penelitian ini dilakukan untuk mempelajari penerapan BIM menggunakan software Autodesk Revit 2019, menghasilkan pemodelan pada pekerjaan struktur, dan menganalisis hasil perhitungan volume pekerjaan. Penelitian ini menggunakan Gedung B sebagai material penelitian untuk dimodelkan. Hasil dari penelitian ini adalah pemodelan Gedung B Fakultas Ekonomi dan Bisnis Universitas Lampung pada pekerjaan struktur menggunakan software Autodesk Revit 2019 sehingga dapat diterapkan dalam pelaksanaan konstruksi yang sedang berlangsung untuk menjadi lebih efektif dan efisien. Hasil pemodelan didapatkan nilai total volume tulangan 923850,382 kg dan total volume beton 4424,878 m3. Perbandingan perhitungan volume pekerjaan pada pekerjaan struktur antara hasil dari pemodelan menggunakan software Autodesk Revit 2019 terhadap hasil dari data perencanaan didapatkan selisih lebih besar 18,221% untuk tulangan, disebabkan pada perhitungan Revit lebih detail seperti panjang penyaluran. Volume beton didapatkan lebih kecil 4,108% disebabkan Revit menghitung volume bersih tiap elemen yang menyatu.Kata Kunci: BIM, Revit 2019, Pemodelan, Volume
Pemanfaatan Material Pasir Sebagai Bahan Pengganti Fraksi Agregat Halus Untuk Lapis Pondasi Agregat Kelas A
Get PDFThe base course material uses mountain stone which is broken up with a stone crusher so that it has a high quality which makes it expensive. In this research we need an alternative material to replace fine aggregate that meets the specification requirements. One of the more affordable resources is sand aggregate. The purpose of this study was to determine the density and comparison of the California Bearing Ratio (CBR) value of the base course using sand as a substitute for fine aggregate. The method used in this research is laboratory scale testing to obtain data on aggregate characteristics, optimum moisture content, and CBR values. The base course aggregate mixture used was 55% coarse aggregate and 45% fine aggregate consisting of a mixture of fine crushed stone and 0%, 10%, and 20% sand substitution. The results showed that the KAO value decreased with the addition of sand aggregate. Laboratory CBR values increased with 0% sand substitution having a CBR value of 99.2%, 10% sand substitution having a CBR value of 90.6%, and 20% sand substitution having a CBR value of 84.1%. Only the laboratory CBR value with sand substitution of 20% does not meet the specifications for base A aggregate, namely a minimum value of 90%
Pemodelan dan Perhitungan Kembali Rencana Anggaran Biaya (RAB) Gedung UKM FISIP Tahap 2 Universitas Lampung Berbasis Teknologi Building Information Modelling (BIM)
Get PDFThe rapid development that occurs in the construction sector is important because the construction sector is an important part of the development of a country. The rapid development and high level of project complexity require construction service providers to work more effectively and efficiently. Currently, the development of technology and communication science is able to answer these problems, one of which is by using Building Information Modeling (BIM), which facilitates a more integrated design and construction process in order to obtain efficient results. Stages of research methodology: 1) Preparatory stage; 2) Data collection stage; 3) 3D modelling stage with Autodesk Revit; 4) Clash Check examination stage; 5) Stage of releasing work volume; 6) Stage of preparing The Cost Budget Plan (RAB); 7) Stage of drawing conclusions and presenting results. Overall, the total price difference between the total price using the total volume of work contained in the Bill of Quantity (BoQ) results in a greater total price than using the total volume of work produced by Autodesk Revit, with the following indicators: There is a calculation error in the form of human error in the process of preparing the RAB using the total volume of work contained in the BoQ by planning consultants, such as material double-count errors. From this research, it can be concluded: 1) Modeling with Autodesk Revit greatly speeds up planning work because it is very complex to be applied to various construction projects; 2) The use of BIM is very efficient due to the full-integrity facility; and 3) Output volume issued can minimize human error in calculating work volume manually. Minimizing human error greatly affects the contractor's profit
Analisis Kapasitas Saluran Drainase Di Jl. Kartini Kecamatan Tanjung Karang Pusat Kota Bandar Lampung
Get PDFThe Bandar Lampung area which is quite routinely hit by floods is in Tanjung Karang Pusat District, the Jl. Wolter Monginsidi to Jl. Kartini. The reason is the high rainfall, as well as the curved road conditions and the performance of the drainage channel that is not optimal enough to accommodate the water discharge before carrying it to the Way Awi river which is on the road. The option that can be taken to reduce the risk of flooding is by evaluating the drainage channels on the road, taking into account the capacity of the drainage channels so that they are able to accommodate the flood discharge through them. The design discharge is calculated using hydrological analysis, rational methods, and based on maximum rainfall data for the last 10 years. For channel discharge capacity is calculated using hydraulics analysis and Manning's formula. The results of the analysis of the existing discharge capacity in most of the drainage channel segments are still able to accommodate the planned discharge with a 5-year return period of rain, so there is no need to increase the dimensions, except for segment 4, because the existing drainage capacity (Qs) is 0.700 m3/s smaller than design discharge (Qr) 1,238 m3/s. These conditions require the need to increase the dimensions of the drainage channel in order to accommodate the discharge through it. Key words : drainage, hydrological analysis, hydraulic analysis, flooding
Karakteristik Campuran Aspal Porus Dengan Menggunakan Material Dari Lampung
Get PDFPorous asphalt is one of the asphalt mixtures being developed for wearing course construction. This layer uses open graded which is dominated by coarse aggregate, resulting in quite large voids. The material used in this study came from Lampung. The purpose of this study was to determine the characteristics of porous asphalt mixtures using materials from Lampung. The results of the aggregate testing show that aggregates originating from Lampung are able to meet the general specifications of Bina Marga in 2018. This study shows that the highest stability is found at 5.5% asphalt content with a stability value of 552.52 kg and the lowest stability at 6.5 asphalt content % with a stability value of 459.22 kg. The lowest flow value is found at 5% asphalt content, which is 5 mm, while the highest flow value is found at 6.5% asphalt content, which is 6.2 mm. The highest VIM was found at 4.5% asphalt content which was 21.77%, while the lowest VIM value was found at 6.5% asphalt content which was 14.07%. The highest cantabro loss value was found at 4.5% asphalt content, which was 39.11%, while the lowest cantabro loss value was found at 6.5% asphalt content, which was 13.91%. The lowest asphalt flow down value is found at 4.5% asphalt content, which is 0.16%, while the highest AFD value is found at 6.5% asphalt content, which is 1.30%. Based on the test specimens for the optimum asphalt content, the permeability coefficient value was 0.075 cm/second
Penerapan Buiding Information Modeling (BIM) dalam Perbandingan Quantity Take Off Material pada Jembatan Kecamatan Way Bungur Kabupaten Lampung Timur
Get PDFPengaruh digitalisasi dalam industri memberikan kesempatan yang lebih besar dan luas dalam mencari desain konstruksi modern yang inovatif dan berkelanjutan. Building Information Modeling (BIM) merupakan perkembangan digital yang berdampak besar dalam sektor industri Architecture, Engineering, and Construction (AEC).Penelitian ini mengimplementasikann Building Information Modelling (BIM) di dalam pengerjaannya. Objek model berdasarkan data pada Proyek Pembangunan Jembatan Kali Pasir Ruas Jalan Desa Tanjung Tirto–Desa Kalipasir, Lampung Timur. Tujuan penelitian adalah untuk mengetahui selisih perhitungan volume quantity take off metode konvensional dengan volume quantity take off outputsoftware Autodesk Revit 2024 student version. Metode penelitian yang digunakan berupa pemodelan struktur 3D menggunakan software Autodesk Revit yang berfokus pada bagian rebar jembatan. Setelah bagian jembatan selesai dimodelkan, output quantity take off berdasarkan software akan dianalisis lebih lanjut melalui Microsoft Excel. Hasilnya, didapat persentase selisih perbandingan antara metode konvensional dan metode berbasis BIM sebesar 4,04 % untuk tulangan. Diperoleh total volume tulangan sebesar 20592,14 kg dari metode berbasis BIM, sebesar 19759,5 kg dengan metode konvensional yang menghasilkanselisih sebesar 832,64 kg