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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 840 Documents
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ANALISIS EKONOMI TEKNIK INVESTASI PROYEK (STUDI KASUS PADA HOTEL ZODIAK LAMPUNG) windy putri diwantari; Ika Kustiani; Amril Ma'ruf Siregar
Jurnal Rekayasa Sipil dan Desain Vol 4, No 4 (2016): Edisi Desember 2016
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Investor yang berinvestasi dalam suatu proyek pasti berharap agar mendapat keuntungan dari investasinya.  Oleh karena itu, sebelum memulai suatu investasi, hendaknya dilakukan suatu studi kelayakan untuk menilai apakah investasi yang akan ditanamkan layak atau tidak. Dalam penelitian ini, kelayakan investasi hotel hanya ditinjau berdasarkan aspek ekonomi teknik.  Parameter yang digunakan untuk meninjau investasi yaitu menggunakan metode Net Present Value (NPV), Benefit to Cost Ratio (BCR), Internal Rate of Return (IRR), Payback Period (PP) dan Break Even Point (BEP). Analisis kelayakan proyek ini dibuat dalam 8 (delapan) buah skenario. Setiap skenario memiliki variasi pada tingkat inflasi, faktor kekosongan kamar dan sumber dana.  Hasil analisis kelayakan investasi yang paling menguntungkan adalah skenario pertama, yang mengasumsikan sumber dana investasi berasal dari modal sendiri dengan faktor kekosongan kamar sebesar 25%, tingkat inflasi 10%, tingkat suku bunga 7,5% per tahun dan rate of return sebesar 10%.  Sementara itu, skenario lainnya menunjukkan bahwa setiap skenario tersebut tidak dapat memenuhi satu parameter atau lebih.  Kata kunci : Studi kelayakan, Net Present Value (NPV), Benefit Cost Ratio (BCR), Internal Rate of Return (IRR), Payback Period (PP), Break Even Point (BEP).
Pemanfaatan Alat Tekan Penetrasi Modifikasi Paving Block Untuk Melihat Nilai Kuat Tekan Yang Dipengaruhi Oleh Waktu Perendaman Menggunakan Tanah, Semen, Dan Kapur Muhammad Aldani; Iswan Iswan; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
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Soil sample that used as base material in this study was taken from Belimbing Sari Village area, Sub Jabung, East Lampung. Based on the testing of soil physical's characteristics, USCS classified soil samples as organic soil with medium to high plasticity and belongs to the OH group. The mixed content which used in this study was 85% soil, 10% lime, and 5% cement with curing time for 14 days, then it was divided with combustion and without combustion treatment on the paving block sample and soaked for 4, 8, 12, and 16 days. The result of this study was to obtain the average value of pressed-value on a mixture of 85% soil + 10% lime + 5% cement after the largest burning treatment and soaked for 4 days at 11.7 MPa. Thus, in addition to the combustion, the duration of immersion also affects its pressed-value. The longer it had soaked, the smaller its pressed-value would be. Therefore, this pressed-value met the requirement of the paving blocks' SNI-03-0691-1996 that was qualified on the classification of quality D which had the average pressed-value of at least 10 MPa. In addition to the pressed-value, the water absorption rate which was 15.5% -20.32% did not meet the paving blocks' requirement of SNI-03-0691-1996.Key words : Paving block, organic clay soil, compressive strength, water absorption, immersion.
Perbandingan Volume Rangka Kayu Pada Pembuatan Rangka Atap Kuda-Kuda Bentang 8 (Delapan) Meter Berdasarkan SNI 7973-2013 Rizqi Darmawan; Hasti Riakara Husni; Ratna Widyawati
Jurnal Rekayasa Sipil dan Desain Vol 6, No 2 (2018): Edisi Juni 2018
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AbstractThe roof frame is a building structure that is above ringbalk. The roof frame serves as a retaining roof from pressure provided by the roof . Constructs of trusses are generally made of the same type and dimensions of wood use for short, medium, or long spans. Therefore, it needs analysis wood requirement of truss. This study aims to determine the dimensions and volumes of truss and compare volume of efficient timber requirements of the planned. In this research,volume requirement analysis of truss.The first, selection of wood used in the span of 8 meters. Then make 4 types of truss. Then, load analysis using SAP2000 to get the force. Having obtained value of force, then performed an analysis of the pull force and press so that the dimensions used are safe. Furthermore, the calculation of the volume of wood demand on each type of the planned, so that obtained efficient comparison volume of the 4 types.In the analysis, the dimensions of each type are type 1 (6/6 cm, 6/8 cm, 8/8 cm and 8/10 cm), type 2 (4/6 cm, 6/8 cm, and 8/8 cm), type 3 (4/6 cm and 6/8 cm) and type 4 (4/6 cm, 6/8 cm, and 8/10 cm). Then the volume of wood demand on type 1 (0,2038 m3), type 2 (0,1383 m3), type 3 (0,1229 m3), and type 4 (0,1797 m3). Based on the stem rod analysis, it was concluded that the most efficient roof truss type of the 4 types, namely the 3rd type.Keywords: Roof frames, truss, volume of wood
Analisa Kesalahan Pemodelan Data Pasang Surut Stasiun Tanjung Priok Agus Ari Prasetyo; Ahmad Zakaria; Margareta Welly
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
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This research was conducted to study the characteristics of tides and tidal make synthetic model.The data used tide data hourly to the length of the data in 1985-1987 at the station Tanjung Priok,Jakarta province, Indonesia.The modeling is performed using a data length of 15 daily or for any length of data to 360 hoursand data 30 daily or for any length of data 720. Using data from tide observations obtained andapply Anfor equations and method least squares can be generated model of periodic tidal hourly.Model periodic tidal of tidal observation data is assumed as the model data obtained by using 9tidal harmonic components. From the modeling results and the measured data can be seen thecorrelation coefficient and the value of modeling errors.Based on these results we can conclude tidal hourly synthetic time series obtained significantlyapproaching tidal measurable. The correlation coefficient was very good, the value of the averagecorrelation coefficient models 30 daily periodic observation is 0.9377 and the average ofcorrelation coefficient models 15 daily periodic observation is 0.9571. From this research can beseen the value of a good tide data and allow for cost saving tide observations with 15 days ofobservation.keywords: daily tidal, the value of modeling errors, correlation coefficient
Pengaruh Kuat Tekan dan Kuat Geser pada Sampel Dry Side of Optimum (Optimum Kering) dan Wet Side of Optimum (Optimum Basah) Tanah Organik Ade Setiawan; Iswan Iswan; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 3, No 2 (2015): Edisi Juni 2015
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Organic soils causing many problems for the construction to be built on it, is generally caused bythe physical properties of organic soils that have a very high water content and low carryingcapacity, so that organic soils have less favorable properties for the construction of civil buildings.In this case, there should be a study of compressive strength and shear strength.This research wasconducted in the laboratory by making a sample of the results of a standard compaction, then thesample is done in Optimum condition Dry side of optimum and Wet side of optimum. On the DrySide Of Optimum process, sample was given a reduction of 10% of the optimum water content,while the Wet Side Of Optimum given the addition of 10% of the optimum water content, then thesample is done soaking for 4 days after compaction testing standards.The test results ofcompressive strength and shear strength shows a sample of soil behavior in an Optimumconditions better than the sample in Dry Side Of Optimum conditions and Wet Side Of Optimum.This is due to the pores of the soil Optimum conditions experienced stability and development ofthe soil is very minimum to occurs. Compressive strength and shear strength test is to measurehow strong soil receiving compressive strength and shear strength given to the soil separated fromthe grains.Keywords: Organic Soil, Dry Side Of Optimum, Wet Side Of Optimum, Optimum, CompressiveStrength and Shear Strength
OPTIMALISASI PROFIL BAJA IWF PADA BANGUNAN GUDANG KONSTRUKSI GABLE FRAME BERDASARKAN SNI 1729:2015 Ardini Yuliastri Putri; Bayzoni Bayzoni; Ratna Widyawati
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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The increasement and development of economic growth in Indonesia cause increasement of the construction of warehouse to support business expansion. However, there is an opinion about expensive steel prices which is causes the use of the steel its self is not optimum. In this case, there must be a calculation to determine the model of gable frame and the dimension of steel profiles for the warehouse.  In this study, the frame model is limited of four types that have differences in haunch span.  This study also use the Direct Stiffness Method to calculate structural analysis and  SNI 1729: 2015 to calculate section analysis.  From structural and section analysis, obtained weight for each type of frame.  Frame Type 1 has 4.771,89 kg, Frame Type 2 has 3.348,18 kg, Frame Type 3 has 3.682,24 kg and Frame Type 4 has 10.541,1506 kg.  Based on the volume and weight calculation in each frame type, Frame Type 2 has the lowest weight. Hence, this type of portal can be considered as the most optimum portal type. Key word : gable frame construction, SNI 1729: 2015, Direct Stiffness Method
Perencanaan Dinding Penahan Sebagai Alternatif Pencegah Bahaya Longsor Pada Konstruksi Pangkal Jembatan Hatwan Fardilla; Idharmahadi Adha; Nur Arifaini
Jurnal Rekayasa Sipil dan Desain Vol 6, No 1 (2018): Edisi Maret 2018
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Jembatan adalah prasarana sipil yang membentang di atas aliran sungai dan secara topografi tidak rata. Perbedaan elavasi dari daratan yang dilewati sungai ini membentuk suatu lereng. Bencana yang sering terjadi pada permukaan tanah yang tidak rata atau curam adalah longsor. Kondisi lereng dengan kemiringan yang curam dan menahan beban yang besar dapat mengakibatkan longsor. Oleh karena itu diperlukan dinding penahan untuk menjaga kestabilan lereng agar tidak terjadi penurunan sehingga jembatan tetp aman dari bahaya longsor. Penelitian ini bertujuan untuk merencanakan dinding penahan dalam perlindungan pangkal jembatan dari bahaya longsor.Dalam penelitian ini letak dinding penahan sesuai dengan data gambar rencana. Kemudian dilakukan analisis geoteknik dengan dimensi dinding yang direncakan, dari data tanah dan data beban dapat diperoleh tekanan tanah yang terjdai. Melalui analisis geoteknik didapatkan nilai stabilitas dinding penahan tanah berupa nilai keamanan terhadap guling,geser dan daya dukung tanah hingga dimensi yang dipakai aman. Selanjutnya dilakukan perhitungan struktur penulangan dinding penahan tanah dan diperoleh gambar rencana dari dinding penahan tanah. Dimensi dinding penahan tanah yang direncakan adalah sebesar 0,3 m untuk lebar mercu, panjang kaki 2,4 m, tebal kaki 0,5 m dengan tinggi dinding 5 m. Berdasarkan analisis stabilitas dinding yang dilakukan, disimpulkan dinding aman dari bahaya guling, geser, serta aman dalam perhitungan daya dukung tanah sehingga dinding mampu menjadi salah satu alternatif upaya pencegah bahaya longsor.
Korelasi antara Kuat Tekan Bebas dengan Kuat Tekan Geser langsung pada Tanah Lanau Disubstitusi dengan Pasir Aulia R Sudarman; Lusmeilia Afriani; Iswan Iswan
Jurnal Rekayasa Sipil dan Desain Vol 4, No 2 (2016): Edisi Juni 2016
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This study aims to get the correlation between the soil compressive strength and soil shearstrength directly on silt substituted with granulated materials. This is done because if buildingstructures on the silt soil will cause several problems including a small value of the compressivestrength and low shear strength after incurring. For the testing is done with a mixture of sand, siltsoil so that it can be seen how much sand mixture to resist the forces on the load that is above theground.To determine the sand effect on silt soil , with the compressive strength and shear strength that hasbeen made by way of mixing the sand by 10%, 20%, 30% and 40%. From the test results showedan increase in the compressive strength of 0.3723 kg/cm 2 in a mixture of 10% sand and a decreasein the mixture thereafter. In the direct shear strength value increased 30% when variations mixtureof sand that is equal to 0.4290 kg / cm 2 , the cohesion of 0.27 kg / cm 2 and the friction angle in at26.170.Keywords: silt soil, sand, soil compressive strength, soil direct shear
Analisis Hidrologi Untuk Penentuan Debit Banjir Rancangan di Bendungan Way Besai Mutya Nivitha; Dwi Joko Winarno; Dyah Indriana Kusumastuti
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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AbstractResource which is often used for energy source is water as hydro power plant. One of hydro power plant in Lampung province is Way Besai Hydro Power Plant. Considering the importance of this hydro power plant for people, extreme things on the hydro power plant like flood, certainly not desirable. Hydrologic analysis required for get result that was flood design as action anticipation.This study was conducted in Way Besai watershed, Sumber Jaya, West of Lampung. The data required of this study are rainfall data from five stations, flow Way Besai data from 1986 to 2000, and daily rainfall data from two station.From frequency analysis, obtained design flood for the largest single data group return period of 2 years is return period 5 years 131,00 m3/s, return period 10 years 178,42 m3/s, return period 25 years 253,71 m3/s, return period 50 years 322,66 m3/s, return period 100 years 403,45 m3/s, and 499,81 m3/s for return period 200 years. From HEC-HMS, the flood design for return period 2 years sebesar 71,2 m3/s, return period 5 years 90,6 m3/s, return period 10 years 105,7 m3/s, return period 25 years 128,6 m3/s, return period 50 years 156,6 m3/s, return period 100 years 190,8 m3/s and 233,7 m3/s for return period 200 years. Based on calibration result used RMSE, obtained RMSE value is 3,12. Keywords: watershed, design flood, Way Besai, HEC-HMS
Analisis Ekonomi dan Finansial Kereta Cepat Jakarta - Bandung Oldebes Temy Giantara; Aleksander Purba; Dwi Herianto
Jurnal Rekayasa Sipil dan Desain Vol 6, No 4 (2018): Edisi Desember 2018
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Jakarta and Bandung city with a distance about 150 km must be taken more than three hours by highway or railway due to the ever-increasing mobility with limited infrastructure capacity.  This study analyzes the economic and financial feasibility of the Jakarta – Bandung high speed rail project and calculates the NPV, BCR, IRR, PI, and PP. The government through the SOE and China International Railway consortium initiated the construction of a high speed rail from Halim to Tegalluar with a 142,3 km rail length and an average speed of 250 km/h, construction began in 2015 and is expected to be completed by 2020. The analysis is done with assumption of 75% occupancy rate, with discount rate of 2% and 3,46%, and feasibility of the project by doing comparison of feasibility method that is NPV ≥ 0, BCR > 1, IRR > r, PI > 1, and PP is faster than NPV positive. In the highest value feasibility analysis obtained with 75% occupancy rate and discount rate 2%. If only calculate the economic benefits obtained value of NPV = 3.279.703.704,18 ≥ 0, BCR = 1,00 > 1, IRR = 6,45% > r, PI = 0,65 < 1, PP = 33,76 > 29 year. If only calculate the financial benefits obtained value of NPV = 8.677.268.827,83 ≥ 0, BCR = 1,01 > 1, IRR = 5,50% > r, PI = 0,79 < 1, PP = 34,47 < 38 year. If calculate the economic and financial benefits obtained value of NPV = 1.543.396.683.112,40 ≥ 0, BCR = 1,56 > 1, IRR = 105,46% > r, PI and PP can not be calculated because the positive value of NPV in the first year (2020).

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