Jurnal Rekayasa Sipil dan Desain
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Analisis Tingkat Kerusakan Jalan dengan Menggunakan Metode Pavement Condition Index (PCI) (Studi Kasus : Jalan P. Tirtayasa Bandar Lampung)
Get PDFThe purpose of this study is to explain the types of damage to the flexible pavement surface layer, to determine the index value of the pavement condition on the P. Tirtayasa road section based on the PCI (Pavement Condition Index) method, so that these results can be used in the preparation of road maintenance programs. The results of this study are the average of Pavement Condition Index (PCI) value on P. Tirtayasa street is 49.4 with moderate conditions (fair). The most dominant type of damage was patches with a damaged area of 2378.96 m (44.7%), then crocodile cracks with a damaged area of 1375.01 m (25.8%). Judging from the damage to the existing roads, it is necessary to patch, cover cracks, fill cracks, pave and smooth the roads for the damage that has occurred and then overlay and continue with a routine maintenance program. Keywords: road damage, PCI method, road maintenance
Modifikasi Struktur Rumah Sakit Umum Hermina Lampung dengan Metode Sistem Rangka Bresing Eksentris (SRBE) untuk Bangunan Tahan Gempa
Get PDFEccentrically Braced Frame System (EBFs) is a diagonal brace system which at least one end of each supporting element supports the beam at a certain distance from the location of the beam-column joint, or from another diagonal end by a distance called a link or eccentricity. . This study aims to determine how to plan a steel structure building using the Eccentrically Braced Frame System (EBFs) method and to find out how the joint planning method for the steel structure.Hermina Lampung General Hospital is a building consisting of eight floors built using reinforced concrete construction which will be re-planned using the Eccentrically Braced Frame System (EBFs). The standard provisions in the calculations used in this study refer to SNI 1729 (2020) about cerning the Procedure for Planning Building Steel Structures.Based on the results of the research that has been done, it can be concluded that in calculating the steel frame structure using Eccentrically Braced Frame System (EBFs) can be planned based on SNI 1729 (2020) or AISC 360 (2016), but to calculate the link and brace components refer to SNI 7860 (2020) or AISC 341 (2016). Meanwhile, connection planning can be carried out based on SNI 1729 (2020) and SNI 7860 (2020) by using two methods, namely load and resistance factor design (LRFD) and allowable strength design (ASD)
Analisis Potensi Kerentanan dan Risiko Bencana di Wilayah Kabupaten Tanggamus
Get PDFTanggamus merupakan salah satu Kabupaten di Provinsi Lampung yang memiliki banyak wilayah berpotensi tinggi terhadap terjadinya bencana alam seperti gempa bumi, tsunami, tanah longsor, banjir dan bahaya gunung api, baik yang disebabkan oleh fenomena geologi maupun oleh iklim. Kejadian bencana alam seringkali menimbulkan korban jiwa dan kerugian material yang besar sehingga perlu dilakukan kajian pengurangan risiko terhadap bencana. Dalam penelitian ini dilakukan delineasi wilayah-wilayah yang memiliki tingkat ancaman, kerentanan, kapasitas dan resiko bencana alam seperti tanah longsor, banjir dan gempa bumi yang dibagi menjadi 3 klasifikasi kelas yaitu rendah, sedang dan tinggi. Hasil analisis yang diperoleh dari delineasi pembuatan peta risiko bencana tanah longsor menunjukkan bahwa wilayah yang termasuk dalam klasifikasi kelas rendah seluas 187.364,82 ha, kelas sedang 71.454,95 ha dan kelas tinggi 26.726,24 ha, untuk bencana banjir kelas rendah 220.592,08 ha, kelas sedang 34.404,94 ha dan kelas tinggi 30.548,99 ha serta gempa bumi kelas rendah 92.341,21 ha, kelas sedang 112.376,12 ha dan kelas tinggi 80.828,67 ha. Wilayah yang memiliki tingkat ancaman bencana tinggi, perlu diantisipasi dan diminimalkan risiko akibat bencana, sehingga perencanaan dan penyusunan pembangunan tata ruang serta wilayah sangat diperhitungkan terutama daerah dengan tingkat kerentanan yang tinggi terhadap bencana. Kata kunci : Ancaman, Kerentanan, Kapasitas dan Risiko Bencana
Analisis Solusi Kemacetan pada Simpang Sebidang Kereta Api Jalan Urip Sumoharjo
Get PDFThe high frequency of the Babaranjang train track causes congestion problems on the Urip Sumoharjo road which is caused by road closures when the train passes. The impact of the closure caused long queues of vehicles to block Padjajaran and Kimaja roads. In this study, it discusses the causes of congestion in the vehicle movement that is not smooth, especially on the Simpang Urip Sumoharjo road. Then compare the road capacity and the degree of saturation of the Urip Sumoharjo road under normal conditions and the conditions when the Babaranjang train passes, and analyze the structural concept to overcome congestion at the Urip Sumoharjo crossing.Analyze the comparison between Flyover and Underpass using the Scoring Zero One method. The results of the analysis show that to overcome congestion on Jalan Urip Sumoharjo it is more effective to build an underpass with a score of 60% while the flyover building gets a score of 40%. With the cross-normal degree of saturation, the result is 0.711. As for the results of saturation after the train passed the result was 1.56. And the calculation results show that the existence of an underpass can reduce congestion on Jalan Urip Sumoharjo by 45.58%.Keywords: Railroad latch, Degree of Saturation, Scoring Zero One metho
Pemodelan Hujan-Debit Menggunakan Program HEC-HMS Di Subdas Argoguroh – Margatiga
No full textSedimentasi sering terjadi akibat usia operasional bendungan. Pemodelan hujan –debit bertujuan untuk perencanaan bidang teknik sipil, dengan kalibrasi hujan – debit menggunakan sofware HEC-HMS, bertujuan untuk memprediksi kejadian-kejadian pola aliran di waktu yang akan datang Penelitian ini dibutuhkan beberapa analisis antara lain, Peta subdas, Peta tutupan lahan, curah hujan rancangan minimum, Data debit minimum, dan kalibrasi menggunakan program HEC-HMS 4.5.dan metode NashBerdasarkan penelitian ini menunjjukan bahwa.model hidrologi terdiri dari 14 subdas yang di kelompokan menjadi 3 subdas dengan luas 45,0220 km2, 81,4272 km2, 62,8081 km2 . Hasil model HEC-HMS 4.5 pada tahun 2014 ialah 14,4 m/s, tahun 2015 ialah 5,0 m/s dan tahun 2018 ialah 3,7 m3/
Kajian Pola Operasi dan Desain Penataan Emplasemen Stasiun pada Jalur Longcut Tegineneng - Tarahan
Get PDFSaat ini kondisi lalu lintas perkeretaapian di Provinsi Lampung, banyaknya perlintasan sebidang yang dilewati jalur kereta, menimbulkan kemacetan khususnya di kota Bandarlampung. Penelitian ini bertujuan untuk mengkaji pola operasi untuk kereta api Babaranjang termasuk penataan emplasemen baru di jalur longcut dari Tegineneng–KM3 Panjang. Lokasi penelitian dilakukan di daerah Tegineneng-Tarahan, dimana akan dibuat longcut yang bersampingan dengan pembangunan jalan Tol Sumatera. Hasil penelitian menunjukkan bahwa target produksi tahunan pada tahun 2020 dengan rencana angkutan menuju Tarahan, PT. Bukit Asam, SRENGSEM dan PT. PULP masing-masing sebesar 25 juta ton, 22 juta ton dan 1 juta ton. Menghasilkan jumlah rangkaian kereta api 25 dan 22 rangkaian kereta api isi, dalam satu kali keberangkatan yang terdiri dari 60 gerbong bermuat 50 ton per gerbongnya dan 3 rangkaian kereta api isi, dalam satu kali keberangkatan yang terdiri dari 40 gerbong bermuat 30 ton per gerbongnya. Jumlah frekuensi kereta api dari Tarahan–Tanjungenim Baru pulang pergi yang telah ditentukan sebesar 124 kereta per hari, masih memenuhi kapasitas lintas yang tersedia 126 kereta per hari. Untuk emplasemen stasiun Tegineneng menambah jalur dari 2 menjadi 6, stasiun Sukamenanti menambah arah jalur dari stasiun Tanjungkarang menjadi stasiun Tanjungkarang dan Karangsari kemudian menambah satu stasiun Karangsari diantara stasiun Tegineneng dan KM3 Panjan
Evaluasi Diameter Partikel Tanah Terhadap Derajat Kepadatan Tanah Menggunakan Metode Tekanan
Get PDFSoil is a material to build any infrastructure. So, soil becomes very important and influential in construction. Soil quality determine the power of construction on it, the good soil is soil that has a high density in each particles and contain less water levels. The quality of soil is depending on physic and mechanic soil condition, that’s why we need to test it out. Soil compaction is process of increasing the soil density by reducing the particles proximity so it can reduce the air volume. Compaction is divided into four types. In this research is using two types of compactions that are type A and Type C with purpose to find out the effect of soil particles diameter by passing sieve analysis to soil compaction.Compaction is done based on blow method and pressure method. In pressure method is using modification compaction tool with 5 Mpa, 10 Mpa, and 15 Mpa pressures.The result of this research can be conclude that the blow method compaction type A has a higher water content than type C, but the value of maximctum dry volume weight Type C higher than type A. In pressure method it can be concluded that as the higher pressure so the water content and the maximum dry volume weight are also getting higher
Peran Semen Portland Tipe I dan Portland Komposit Atas Ketidaksesuaian Perkembangan Kuat Tekan Pada Beton Normal Terhadap PBI 1971
Get PDFThe code about concrete compressive strength progress is presented on Table 4.1 of PBI 1971. But the concrete compressive strength development in many current concrete construction projects often face one similar major problem which is the incompability between concrete compressive strength progress compared to PBI 1971. To identify that problem, this research was done by creating 160 cube concrete samples from OPC and 120 cube concrete samples from PCC by using 4 different PCC and OPC brands that consist of Dynamix, Baturaja, Tigaroda and Padang. Moreover, the samples are consists of 2 different targeted concrete compressive strength which are K250 and K400 and the samples were tested in the age of 7, 14, 21, 28 and 56 days. Aside of that, the chemical properties in each of used cements that consist of Tricalcium Silicate (C3S), Dicalcium Silicate (C2S), Tricalcium Aluminate (C3A) and Tetracalcium Aluminoferrit (C4AF) were also tested to identify the impact of chemical properties of cements to the compressing strength progress of all samples.Based on the research, it was identified that the chemical properties of cements that consist of C3S, C2S, C3A and C4AF were very influential in the process of compressive strength progress of all samples. In addition, the coeffiecients presented on SNI-15-2049-2015 Chapter 5 Table 5 used to calculate the percentage of C3S, C2S, C3A and C4AF need further reviews. Last, it was known that the compressing strength development of both OPC and PCC samples were not aligned to the PBI 1971 estimation. Besides, the procedure of all samples have followed the British Standard and ASTM regulation. In conclution, based on the research PBI 1971 was no longer relevant to be used as the reference for concrete compressing strength progress. Keywords: Concrete, compressive strength progress, cement chemical properties, incompability, tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite
Perilaku deformasi batuan lapuk ditinjau dari uji 1-D compression slaking test
Get PDFTujuan penelitian ini adalah mengetahui perilaku deformasi akibat crushing dan slaking melalui uji 1-D Compression Slaking Test terhadap batuan lapuk. Slaking merupakan keadaan tanah atau batuan yang tidak dapat mempertahankan konsistensinya akibat adanya gangguan air. Penelitian ini dilakukan pada sampel batuan lapuk melalui pengujian 1-D Compression Slaking Test dan pengujian X-Ray Diffraction (XRD) untuk mengetahui mineral yang terkandung pada setiap batuan. Uji 1-D Compression Slaking Test dilakukan pada tekanan sebesar 9,8; 19,6; 39,2; 78,5; 157; 314 kPa. Hasil pengujian 1-D Compression Slaking Test didapatkan perilaku deformasi yang diakibatkan crushing(∆e1) optimum terjadi pada batuan Bukit Kemuning sebesar 0,510 dan perilaku deformasi yang diakibatkan slaking(∆e2) optimum terjadi pada batuan Pemancar sebesar 0,483
Analisis Kualitas Air Hasil Pengolahan Air Hujan Dengan Metode Elektrolisis Menjadi Air Bersih
Get PDFWater is all water that above or below the ground surface, including sea water that is on land. The need for clean water will increase, while clean water is scarce and must be paid handsomely. Meanwhile, the water source crisis is caused by the increasing need for water as a result of the growing population and land functions that can change the hydrological cycle. One way to meet human needs for clean water is by establishing the concept of rainwater harvesting, which is the concept of collecting rainwater that is stored in a reservoir and then the collected water can be used as an alternative source of water.The purpose of this study was to analyze the quality of rainwater before electrolysis and to determine the pH and TDS values of the permanent yield of rainwater and electrolysis.The results of this study are based on the results of laboratory tests showing that the overall quality of water in rainwater meets PerMenKes N0.416 of 1990. For the decreased pH and TDS values in the electrolysis process using a 1 ampere current adapter with a voltage of 300 volts has increased by 0 , 2-0.4 cm in acidic water. As well as for the area of titanium that affects the electrolysis process, the smaller the size of the titanium, the faster it will produce acid water.Keywords: water, rainwater, rainwater harvesting concept, electrolysis method, acid water