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Lampung
INDONESIA
Jurnal Rekayasa Sipil dan Desain
Published by Universitas Lampung
ISSN : 23030011     EISSN : 27150690     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 545 Documents
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Analisis Perbandingan Pola Aliran Pada Bangunan Pelimpah Ogee Dan Stepped Dengan Model Fisik 2D Aditya, Robby Firza; Wahono, Endro Prasetyo; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 1 (2021): Edisi Maret 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i1.1737

Abstract

A spillway building is usually a structure followed by a steep channel. Flow velocity is very dependent on the slope of the bottom channel which causes super critical flow. Besides being fast, the flow in a steep channel also has a considerable energy, so it must be able to be suppressed. The energy reduction in this study was attempted with a stepped spillway. Step weir is a modification of the standard profile for Ogee type weir. This is the background of the author in taking the title of the thesis about Comparative Analysis of Flow Patterns in Ogee and Stepped Overflow Buildings with 2-D Physical Models. The results of this study indicate that the results of the energy line height at the H3 (downstream overflow) point at the upstream height of 3 cm for Ogee are 2.68 cm, and for stepped it is 2.31 cm. There was a decrease in energy by 13.80%. This shows that the stepped spillway can absorb energy better than the Ogee type. The results of observing the flow pattern on the stepped spillway for each increase in the flow rate that overflow in the spillway can be concluded that the flow pattern that occurs is a transition flow to a skimming flow. Keywords: Energy Attenuation, Flow Pattern, Spillway, Stepped Spillway
Analisis Tingkat Kerusakan Jalan dengan Menggunakan Metode Pavement Condition Index (PCI) (Studi Kasus : Jalan P. Tirtayasa Bandar Lampung) Zaid, Muhammad; Sulistyorini, Rahayu; Ofrial, Siti Anugrah Mulya Putri
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1746

Abstract

The 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.
Analisis Pengaruh Kemiringan dan Bentuk Dasar Fishway Terhadap Rasio Perpindahan Sidat (Anguilla bicolor, sp) Yusuf, Maulana; Wahono, Endro Prasetyo; Kusumastuti, Dyah Indriana; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1754

Abstract

The construction of a transverse structure on a river such as a dam and weir needs to pay attention to environmental factors and the surrounding ecosystem, especially for the ecosystem in the river. Therefore, it is necessary to build a fishway or fish in the transverse river structure so that the river ecosystem which has migration characteristics from upstream to downstream or vice versa is not disturbed because the migration route is blocked. This is the background of the author in taking the title of the thesis Analysis of the Effect of Slope and Basic Shape of Fishway on the Eel Movement Ratio (Anguilla bicolor, sp). The results of this study indicate that eels are nocturnal or active at night. Eel activity most often occurs at a fishway angle of 30 ° by testing using a 0.5 inch pvc pipe foothold type, while the lowest activity occurs at a 35 ° fishway tilt angle by testing using a 1 inch pvc pipe foothold type. The most effective slope based on the test results is at a slope angle of 30 ° but for a slope of 50 ° it can still be said to be effective because the activity ratio shows almost double the activity. Keywords: Fishway, Footing Type, Eel Activity
Penggunaan Pasir Seragam pada Perbaikan Subgrade Ditinjau Terhadap Tebal Perkerasan Jalan (Swelling Potential dan Non Swelling Potential) Pratiwi, Ayu Ning Trias; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1761

Abstract

Subgradeis the most important part to be used as the focus and support of all construction loads that are on it. If the subgrade is clay soil that has a low carrying capacity and is very sensitive to moisture content, then nearby buildings will often suffer damage, such as land located in Marga Kaya Village. In this study using the method of mixing native soil with stabilization material in the form of uniform sand derived from Mount Sugih with a mixture variation of 5%, 10% and 15% of the dry weight of the soil. The test results showed cbr unsoaked and soaked maximum occurred in sand mixture 15% with CBR Unsoaked value of 13.2% and CBR Soaked with a value of 2.9%. Road pavement thickness on CBR Unsoaked and Soaked efficiently on sand mixture 15% with thickness D1 = 2.75 cm, D2 = 20 and D3 = 10 cm, and CBR Soaked with thickness D1 = 8.75 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 7.4% in the addition of uniform sand by 15%. DDT value is influenced by cbr value the greater cbr value then DDT will increase.
The influence of el nino and la nina on rainfall data of east lampung regency, lampung province Gani, Rama Dian; Zakaria, Ahmad; Kusumastuti, Dyah Indriana
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1763

Abstract

This research was conducted to determine the impact of the areas where El Nino and La Nina were the most dominant. The data used in this study are daily rainfall data in 5 rain stations located in East Lampung. Data length from 1989 to 2018 at each station, this data was taken from the Mesuji River Basin - Sekampung (BBWSMS). This modeling is carried out using a data length of 30 years for a data term of 10957.By using observational data and applying it in 2 programs, namely the Fast Fourier Transform (FFT) and the Lomb Periodogram, it produces values that can be graphed for the spectrum of each of the 5 rain station areas, namely Jepara Lake, Labuhan Ratu, Taman Negeri, Kota Raman and Sri Gading. From the results, it can be seen which areas are predominantly affected by El Nino and La Nina. Based on the results of the two programs, both show that the rain station in the Lake Jepara area experiences more dominant El Nino and La Nina influences. Keywords: El Nino, La Nina, rain station, rainfall, Fast Fourier Transform, Lomb Periodogram
Analisis Investasi Pembangunan Proyek Spam (Sistem Penyediaan Air Minum) Kota Bandar Lampung Nabila, Andri Abyan; Kustiani, Ika; Siregar, Amril Ma'ruf
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1772

Abstract

In an effort to meet the needs of drinking water for the community, the city government of Bandar Lampung pioneered the development of a Drinking Water Supply System (SPAM), the authors reviewed the analysis of investment in the construction of the Bandar Lampung City SPAM project. The purpose of this study was to determine the feasibility of a SPAM development project assessed from financial parameters. In this study, the feasibility of the economic aspect was carried out by reviewing the following assessment parameters, namely Net Present Value (NPV), Benefit Cost Ratio (BCR), Internal Rate of Return (IRR) and Payback Period (PP). The data used are detailed data on SPAM cost budget, SPAM working drawings and water consumption levels, as well as data from BI in the form of interest rates and inflation rates. From the analysis, it can be concluded that the inflation rate in Indonesia is based on a projection for 25 years, namely between 4% -10% per year, the BI rate based on projections in 2018-2057 ranges from 6% -12% per year, the total investment in SPAM development is Rp. .750,000,000,000.00, from the existing scenario it is concluded that the Bandar Lampung SPAM development project is not financially feasible. However, SPAM development is economically feasible because it increases water availability and the coverage of existing services and also expands regional development in the city of Bandar Lampung.Keywords: analiysis, SPAM, scenario
Perubahan Nilai Daya Dukung Tanah Lempung Lunak Akibat Stabilisasi Tanah menggunkaan Metode Deep Soil Mixing Pola Panels dengan Kapur 8% Sadil, Salsabila Atalia; Iswan, Iswan; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1773

Abstract

Palembapang, South Lampung requires proper road construction for public transportation needs. However, the road conditions in the village were found heavily damaged because of poor soil conditions. Therefore, soil stabilization must be carried out. The method of this study is deep soil mixing (DSM), which is soil improvement method by mixing additional materials in the field (in-site). This method is more affordable because they use their soil as theiraggregate and reduce the transportation budget because of stuff supply.The purpose of this study is to determine the change of soil load-bearing capacity due to the variation of distance and the diameter of the DSM stabilization column on soft clay soil and soft clay soil with 8% lime. This study shows that the stabilization of soft clay soil with 8% lime has increased its load-bearing capacity (qu) from 10.368 kg/cm2to 14.69 kg/cm2. The increase of soil load-bearing capacity with the stabilization of the DSM column is proportional to the volume of soil improvement. The largest increase of the soil load-bearing capacity occurred in 1D columns range and 3.75 cm diameter. The distance variation also gives a more significant change compared to the variation of diameter. The most efficient distance and diameter are at the variation of the distance of 1.25D columns range and 2.5 cm diameter.
Analisis Pengaruh Penggunaan Serat Polypropylene Terhadap Self Compacting Concrete (SCC) dengan Bahan Dasar Agregat Kasar Gradasi Senjang (Gap-Grading) Ulini'am, Adipati Syahidullah; Noorhidana, Vera Agustriana; Irianti, Laksmi; Isneini, Mohd
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1774

Abstract

In general, Self Compacting Concrete (SCC) uses coarse aggreggate with dense graded for mix composition. However, in certain places, sometimes the sources of aggreggate are limited and there’s no stone crusher with possibly use coarse aggreggate with gap graded. H. This research was conducted for investigate the effect of polypropylene fiber additions to SCC with gap graded on workability, compressive strength, splitting tensile strength, and bending strength. Test result for Slump-Flow and T50 for both of gradation with Vf 0%, 0,05%, and 0,1% quilify that Slump-Flow are about 50-65 cm and T50 are 3-15 second. Test result for compressive strength of SCC with gap graded, the optimum Vf is 0,05% with 7,02% increase in strength compared to dense graded with 0% Vf. Test result for split tensile strength of SCC with gap graded, the optimum Vf is 0,05% with 45,53% increase in strength compared to dense graded with 0% Vf. Test result for bending strength of SCC with gap graded, the optimum Vf is 0,05% with 347,28% increase in strength compared to dense graded with 0% Vf.
Perbandingan antara Campuran Pasir Baik dengan Pasir Buruk pada Perbaikan Tanah Dasar Jalan Terhadap Daya Dukung Setelah Dilakukan dan Tidak Dilakukannya Swelling Potential Ditinjau Terhadap Tebal Perkerasan Jalan Qurrahman, Taufiq; Iswan, Iswan; Sulistyiorini, Rahayu
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1775

Abstract

Swelling of clay soil has an impact on building construction. The problem that occurs in Marga Kaya Village, in the rainy season the soil is mushy and the carrying capacity becomes low so that the road is bumpy and the road body decreases. This study uses good sand stabilization material and bad sand with a mixture variation of 5%, 10% and 15% This study aims to find out the thick decrease in road pavement from each addition of mixed variations. Cbr results unsoaked and soaked maximum good sand occurs in a mixture of sand 15% with a value of 14.2% and 3.2%. The thickness of pavement on CBR unsoaked and soaked sand is well efficient on a mixture of sand 15% with a thickness of D1 = 2.25 cm, D2 = 20 cm and D3 = 10 cm, and soaked D1 = 8.75 cm, D2 = 20 cm and D3 = 10cm. Cbr unsoaked and soaked maximum value of bad sand occurs in 15% sand mixture with values of 13.9% and 2.6%. Thickness of pavement on CBR unsoaked and soaked bad sand maximum on the sand mixture 15% with thickness D1 = 2.5 cm, D2 = 20 cm and D3 = 10 cm, and soaked with thickness D1 = 9.25 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 5.7% and 8% in the addition of sand 15%.
Hubungan Sifat Sifat Fisik Tanah Yang Dicampur Dengan Kapur Terhadap Stabilitas Tanah Lempung Pada Tanggul Idrus, S. Tantri Handayani; Iswan, I; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1778

Abstract

In embankment planning, it is necessary to consider the influencing factors such as the materialfor making the embankment, slope stability, guard height, slope protection, the width of theembankment, the slope and dumping facilities. Some areas in Indonesia do not have good qualitysoil. For instance, the soil in Palembapang Village, Kalianda, South Lampung. Regarding theissues, soil maintenance is mandatory to be done to increase the physical parameters of the soil sothat the carrying capacity of the soil is maintained. The results shows that at the mixture rate of0%, 4%, 8%, 12% and 16%, the lime is classified as CL (clay low plasticity)which indicates nonorganicclay with low to medium plasticity. The lab testing result of the sample of natural soilshows cohesion value of 0,1813 kg/cm2 and shear angle value of 20o. After stabilizing processwas done using additives, the cohesion value and shear angle value were significantly increasing.It proves that lime can increase soil density as both value increased. In the natural soil sample,the value of the safety factor was still below the safe limit. Another lime additive was added to thesoil sample with lime addition of 16%. None of the safety factor limits were below average afterthe process. In conclusion, lime additive can decrease the plasticity (liquid limit and plasticityindex), enhancing strength and durability, reducing water absorption and soil development aswell as strengthening the stability of the embankment.

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