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Inersia : Jurnal Teknik Sipil

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Published by Universitas Bengkulu

ISSN : 20869045 EISSN : 26865017 DOI : https://doi.org/10.33369/ijts

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

Each volume contains two editions. The first edtion is published in April and the second one in October. This journal accomodates the research result in the area of civil engineering, i.e. Construction Management, Geotechnical Engineering, Structural Engineering, Transportation Engineering and Water Resources Engineering.

Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur

Articles 216 Documents

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PENGARUH MODULUS HALUS BUTIR PASIR LAUT TERHADAP KUAT TEKAN BETON (Tinjauan Penggunaan Pasir laut di Kota Bengkulu) Fepy Supriani
Inersia: Jurnal Teknik Sipil Vol 8, No 1 (2016)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.8.1.1-10

The availability of the sand in the coastal regions enable the society nearby to use it directly as one of the material of the concrete building. The coastal fine sand with round surface, and uniform grading will reduce the interlocking among the granules. The sand of each region on the coast of Bengkulu visually have different characteristics, also if compared with river sand and mined sand, especially the fineness of the grain. The level of the grain fineness can be seenfrom the grain fineness modulus. This study aims to find out the use of the coastal sand of different fineness to the strength of concrete, as well as the effect of concrete curing by using sea water and fresh water to the strength of the concrete. The coastal sand used in this study was taken from North Bengkulu areas namely Lakok beach, Sentolong beach and Air Padang beach. Each of the sands visually are different in color and grain size. As the comparator, river sand and mined sand are used. The designed samples are concrete cube with dimensions of 15 cm, water to cement ratio of 0.5 and 50-120 mm slump. The test was conducted at 28, 56 and 90 days of the concrete ages. The results showed that the usage of the sand in concretematerials can provide a positive outcome for the coastal sand with coarse gradations and modulus of grains. The usage of Lakok beach sand in concrete test results show that for any age of the concrete samples, the concrete compressive strength are the highest, even exceeds the compressive strength of the concrete using river sand and mined sand. Air Padang beach sand has the finest gradation and produces concrete samples with the lowest compressive strength. The concrete cured by submersion in sea water has lower compressive strength of the concrete compared to the concrete cured by submersion in fresh water.

KAJIAN LAJU ANGKUTAN SEDIMEN TOTAL PADA KANTONG LUMPUR BENDUNG AIR MUSI KEJALO Rahayu, Anis Septia; Besperi, Besperi; Razali, Makmun Reza
Inersia: Jurnal Teknik Sipil Vol. 10 No. 1 (2018)
Publisher : Universitas Bengkulu

Bendung Air MusiKejalo has decreased productivity,one of the contributing factors is sedimentation. The purpose of research is to know the massive rate of sediment transport from weir which enter in sand trap using method of Shen and Hungs and Meyer Petter Muller method. Then plot the dimensions of the sludge pouch from the resulting sediment rate.The stages of the research implementation are sediment sample test, flow velocity measurement and channel dimension then calculation and data analysis.The result of calculation using method of Shen and Hungs, got the value of sediment rate discharge at sand trap is 0,1295 ton / day, and by Meyer Petter Muller method equal to 22,4966 ton / day. So the result of sediment rate discharge Meyer Petter Muller method used for planning dimension sand trap of Air Musi Kejalo Weir.Volume of sand trap Air Musi Kejalo Weir is 120 m3. Dimensions of sand trap length 61 m, width 4 m and depth of 1,3 m. The conclusion of this study is that with thedimensions of planned sludge pockets based on the volume of sediment obtained, the sand trap should be rinsed for 14 days once so that the sediment does not accumulate in the sand trap and using a construction is pairs of round stone with type of sand trap is square and type of main drain is trapezoid.

ANALISIS TIPIKAL RUMAH DI KOTA BENGKULU DAN KESESUAIAN DENGAN RUMAH TAHAN GEMPA Fepy Supriani
Inersia: Jurnal Teknik Sipil Vol 2, No 2 (2011)
Publisher : Universitas Bengkulu

Houses in the city of Bengkulu has several typical, both technical and non-walls house technical, semipermanent houses an d wooden houses. In some earthquakes that occured in the city of Bengkulu, the damage most occur in homes walss. A typical home built to include permanent and non permanent home that can be characterized based on the type of foundation, walls, strengthening structure and type of roof. This determines the typical damage caused by earthquake. The analysis was performes on 200 samples of homes in the city of Bengkulu using the method of observation and survey instrument interviews with written and directed. The result show that many typical houses in Bengkulu is home walls (89%) using continuous foundation stone (67.10%) and zinc roof coverings (65.80%). While strengthhening the structure used standard (Sloof 71.6%, 40.65%) and the column or beam around the ring either 50.32%), although the typical house has indicated the implemnentation of retrofitting structure not taking into account the buliding to earthquake or follow the requirements of earthquake resistant buildings, the use of tin roof was according to house quake-prone region.

ANALISIS LERENG TERASERING DALAM UPAYA PENANGGULANGAN LONGSOR METODE FELLENIUS DENGAN PROGRAM GEOSTUDIO SLOPE Dimas Haryadi; Mawardi Mawardi; Makmun R. Razali
Inersia: Jurnal Teknik Sipil Vol 10, No 2 (2018)
Publisher : Universitas Bengkulu

The Musi Hydroelectric Power Plant area in Kepahiang Regency is a hilly area that has steep slopes that are prone to landslides. One of the landslides that occurred at October 2017 precisely occurred on a highway between Susup Village, Bengkulu Tengah Regency and Ujan Mas District, Kepahiang Regency. This study aims to analyze the slope stability of the terraces using the Fellenius Method. The results of testing the physical properties of the soil indicate that the soil on the slopes of the area of the Musi Hydroelectric Power Plant is clay. The slopes studied in the Musi hydropower area are all prone to landslides because safety factor, FK <1,5. Based on the results of the research on the slopes of the safest type 1 slope the value of the safety factor is the type of slope of the slope trap 3,19o,FK = 1,61 greater than the safety factor value of slope type 2 slope trap 19o, FK = 1,57 and safe slope type safety factor value slope of 19o, FK = 1.519 and the value of the safety factor of the original slope type of slope 30o, FK =0,88.

PENGARUH VARIASI PERSENTASE ABU SEKAM PADI (ASP) DAN ABU CANGKANG LOKAN(ACL) SEBAGAI PENGGANTI SEBAGIAN AGREGAT HALUS DAN SEMEN TERHADAP KUAT TEKAN MORTAR (Kajian Terhadap Adukan Mortar 1Pc : 3Ps) Junita Eka Susanti; Ade Sri Wahyuni; Elhusna Elhusna
Inersia: Jurnal Teknik Sipil Vol 7, No 1 (2015)
Publisher : Universitas Bengkulu

The purpose of this research is to know the influence of sea shell ash (SSA) and rice husk ash (RHA) as partial replacement of cement and sand toward the strength of mortar. The mold with dimension 50 mm x 50 mm x 50 mm were used to cast the mortar.There are 16 variation made from different percentages of RHA and SSA used.The range initial flow used was 80-100%. The result shows that the normal mortar has the highest strength of all. The decrease of mortar strength with RHA and SSA was in the range of 11.60%-59.11% in comparison with normal mortar.

REDESAIN BANGUNAN BAGI DAN BANGUNAN SADAP DI DAERAH IRIGASI BENDUNG AIR KEMUMU KABUPATEN BENGKULU UTARA Romah, Septi Kurnia Hayati; Besperi, Besperi; Gunawan, Gusta
Inersia: Jurnal Teknik Sipil Vol. 9 No. 2 (2017)
Publisher : Universitas Bengkulu

Air Kemumu weir in Kemumu village subdistrict of Kecamatan Arma Jaya Bengkulu Utara Regency, is one of the weir which has irrigation canal and irrigation construction in its system. This research is aimed to plan the canal dimension, divider, and reservoir construction based on 5, 50, and 100 years periodic flow in Kemumu weir irrigation area of Bengkulu Utara. Observation and measurement were done directly in that area in order to find out the dimensionand the problem. Research method that is used in this research is done by counting down the rainfall data by using algebra average method. The primary data are taken from the speed of water flow in canal, canal dimension, and construction dimension. The expected result of rainfall measurement that can complete pre-requirement is Gumbel method type 1. The measurement of the flow is using rational method for any types of periodic flow. The result of this research is finding the final hydrolysis measurement for the secondary BW.1 and tertiary BS 2A canal are 0,52m and 0,35m for the base width BW.1 and BS 2A. The measurement for the canal design based on periodic flow for BW.1 and BS 2A in Q5, Q50, and Q100 are 2,14m, 2,92m,3,14m, 1,74m, 2,17m, and 2,34m. Thetop width (b) measurement of the divider BW.1 and reservoir BS 2A construction are 0,44m and 0,24m. The measurement of its width in Q5, Q50, and Q100 are 1,78m, 2,44m, 2,60m, 1,50m, 2,20m, and 2,34 m.

PERILAKU KUAT TEKAN BETON DENGAN ABU CANGKANG SAWIT SEBAGAI PENGGANTI SEBAGIAN SEMEN Martin Lerry; Elhusna Elhusna; Yuzuar Afrizal
Inersia: Jurnal Teknik Sipil Vol 4, No 2 (2012)
Publisher : Universitas Bengkulu

The aim of this research was to know if palm oil (Elaeis Guineensis) fly ash could replace some cement. Palm oil fly ash which used was taken from palm oil factory PT.Sandabi Indah Lestari at North Bengkulu. The research was directed according to SK SNI-T-15-1990-03, used cylinder specimens, water cement ratio 0.5, and slump value 30-60 mm. The research was substituted partly cement with palm oil fly ash as 0%, 5%, 10%, 15%, and 20% of cement weight. There were two types of sand used in the research namely oceanic sand and mountain sand. All the samples had the same caring until 28 days when the compression test carried out. Concrete compression strength showed decreasing trend. The strength decreased as theincreasing of percent of palm oil fly ash used. The maximum decreases compared to the strength of concrete without the ash were 40% when the concrete used mountain sand and 45,19% when it used oceanic sand.

PENGARUH CAMPURAN DUA AGREGAT HALUS TERHADAP KUAT TEKAN BETON Agustin Gunawan
Inersia: Jurnal Teknik Sipil Vol 6, No 1 (2014)
Publisher : Universitas Bengkulu

Increasing Exploration of river sand push an action to find other aternative excepting river sand. Using of sea sand become alternative as fine aggregate mixed on making of concrete. The research is conducted to know the effect of fine aggregate mixed to concrete compressive strength. Two kinds of fine aggregate used are river sand (PS) from Pondok Kelapa and sea sand from Lais, which is all bad gradation. Coarse Aggregates used are from quarry Sukaraja and quarry Pondok Kubang. Sea sand consists of two conditions which is not washed (PLTC) and washed (PLC) without regard to content of its mud. Number of samples was 42 samples which were cylindrical in shape with diameter of 15 cm and height of 30 cm. The research carried out by combined 65% PS + 35% (PLC or PLTC) and 75% PS + 25% (PLC or PLTC) then compared it to concrete of comparison. Test of concrete compressive strength was performed at 28 days. The result showed that the greatest concrete compressive strength was 16,88 MPa occured on a mixture of 75% PS + 25% PLTC using coarse aggregate from Sukaraja. Mixture of 75% PS + 25% PLTC using coarse aggregate from Sukaraja increased concrete compressive strength of 5,47 MPa (+47,93%) to concrete of comparison using 100% PLTC and 4,05 MPa (+24,02%) to concrete of comparison using 100% PS.

ANALISIS DATA HIDROLOGI SUNGAI AIR BENGKULU MENGGUNAKAN METODE STATISTIK Gunawan, Gusta
Inersia: Jurnal Teknik Sipil Vol. 9 No. 1 (2017)
Publisher : Universitas Bengkulu

Bengkulu municipality as a constituent element of the Air Bengkulu watershed with 51,500 of hectares area bypassed by the stream of Air Bengkulu River which empties into the Teluk Segara District, municipal of Bengkulu. Air Bengkulu River suffered flood at least twice a year of frequency as result of the increase in water discharge (Q) in the rainy season. The purpose of this research is to calculate the amount of peak river discharge of Air Bengkulu and mappingthe distribution of inundation water that may occur in the city of Bengkulu. Analysis of the mean daily maximum rainfall area was conducted by Thiessen Polygon using 15 last years of rainfall datas. Calculation of peak discharge using rational methods for different return period plans Analysis of Rainfall of flood modeling simulation is done by using HEC-RAS 4.1.0 and flood inundation mapping is done by using Hec-GeoRAS 4.3.1 flood modeling. The result of rainfall plan calculations was qualified by Gumbel type 1 method. The results of the Air Bengkulu river peak discharge quantify for return period 5, 10, 25, 50 and 100 years respectively 339.66 m3/sec; 470.38m3/sec; 520.59m3/sec; 557.83m3/sec; 594.79m3/sec; 631.62m3/sec. Results of generated mapping showed the areas affected by flood inundation in Bengkulu City namely Pasar Bengkulu village, Kampung Klawi, Rawa Makmur, Suka Merindu, Tanjung Agung,Tanjung Jaya, and Semarang. The depth value of inundation mapping for every affected village of floodwaters are vary, but in the range of 0 - 110 cm.

PENGARUH SERAT SABUT KELAPA TERHADAP KUAT LENTUR BETON DENGAN FAKTOR AIR SEMEN O,5 Elhusna Elhusna; Fepy Supriani; Agustin Gunawan; Mukhlis Islam
Inersia: Jurnal Teknik Sipil Vol 3, No 1 (2011)
Publisher : Universitas Bengkulu

18 slabs of 100x100x500 mm dimension had been tested to find out the influence of coconut fiber as the additive to the flexural strength of concrete. The water ratio of the concrete mix design was 0,5. The percentation of coconut fiber were 1%, 2%, 3%, 4% and 5% of the volume of the specimen. The result showed that the fiber additional to the concrete cause the strength getting higher as the percentation getting bigger. The flexural strength of 5% the fiber was 30% higher than the slab of the concrete without the fiber.

Page 9 of 22 | Total Record : 216

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Editorial Address Program Studi Teknik Sipil, Fakultas Teknik Universitas Bengkulu Jl. W.R. Supratman, Kandang Limun, Bengkulu

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Ade

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ade.sri.w@unib.ac.id

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+62736344087

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Program Studi Teknik Sipil, Fakultas Teknik Universitas Bengkulu Jl. W.R. Supratman, Kandang Limun, Bengkulu

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Kota bengkulu,

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INDONESIA