Makmun R. Razali
Universitas Bengkulu

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ANALISA SIMPANG TIGA TAK BERSINYAL MENGGUNAKAN MANAJEMEN LALU-LINTAS (STUDI KASUS SIMPANG TIGA BAJAK) Chesi Anggraini; Hardiansyah Hardiansyah; Makmun R. Razali
Inersia: Jurnal Teknik Sipil Vol 5, No 2 (2013)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.236 KB) | DOI: 10.33369/ijts.5.2.21-32

Abstract

The purpose of this study was to determine the level of performance at Intersection Three  Bajak depicted of the degree of saturation (DS), delay, queue opportunities. In this study using the program KAJI and MKJI 1997 as a reference in data processing. In this study there are two alternative solutions to problems that bans the installation of stop signs (alternative 1) and unsignalised intersection improve ments to the signalized intersection (alternative 2). Based on field surveys conducted for 4 (four) days are Monday, Tuesday, Saturday and Sunday, the result degree of saturation at maximum traffic flow from observation days more from the requredment line of MKJI 1997 is ? 0,8 pcu/h exccept at Sunday. As a example for accounting is used maximum traffic flow was at Tuesday with capacity is 2726 smp/jam. From the analysis for the exsisting condition at Intersection Three Bajak produce the degree of saturation (DS) is 0,975 pcu/h, this result more from the requredment line of MKJI 1997 is ? 0,8 pcu/h. Delay that occurs for the exisisting condition is 17,96 sec/pcu and Queue opportunities generated in the exsisting conditions is 38% - 75 %. Alternative condition 1 of produce the degree of saturation (DS) is 0.965 pcu/h was still more from the requredment line of MKJI 1997. Delay is 17,57 sec/pcu and Queue opportunities is 37% -77%. Alternative condition 2 produce the degree of saturation (DS) for Bali street is 0,655 pcu/h, MT. Haryono street is 0,621 pcu/h, Jawa street is 0,693 smp/jam, these results are consistent with the requredment line of MKJI 1997 is ? 0.80. Delay for Bali street is 22,33 sec/pcu, MT. Haryono street is 18,54 sec/pcu and Jawa street is 29,13 sec/pcu. Judging from the degree of saturation (DS), alternative 2 was accordance with the requredment line of MKJI so that it can be concluded that the improvement of the unsignalised intersection to signalized intersection the best alternative solutions to Intersection Three Bajak. Based on exsisting condition, level of service Intersection Three Bajak on level E and degree of saturation is 0,85-1,00 pcu/h.
PEMETAAN POTENSI LIKUIFAKSI WILAYAH PESISIR BERDASARKAN DATA CONE PENETRATION TEST DI KELURAHAN LEMPUING, KOTA BENGKULU Rena Misliniyati; Mawardi Mawardi; Besperi Besperi; Makmun R. Razali; Redho Muktadir
Inersia: Jurnal Teknik Sipil Vol 5, No 2 (2013)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.667 KB) | DOI: 10.33369/ijts.5.2.69-75

Abstract

Bengkulu city is one of the cities on the west coast of Sumatra island particularly vulnerable to earthquakes because it is located in an active seismic lines . This vulnerability allows the phenomenon of liquefaction when an earthquake occurs . One of the areas in Bengkulu city which through the lines is Lempuing Village . This study aims to analyze the liquefaction potential based on the data of Cone Penetration Test (CPT) using deterministic methods published by Idriss and Boulanger in 2008 . The data describes soil parameters, collected from the 6 point spread CPT test in Lempuing. Shear wave velocity data obtained from the correlation vs. the CPT data . Seismic load parameters used were obtained from the Indonesian Earthquake Hazard Map of 2010 and the seismic history of the city of Bengkulu. The magnitude of potential liquefaction happens to the value of Safety Factor (SF). The analysis at a depth of 0-2meter showed that most of the area in Lempuing with high potential of liquefaction, indicated by the value of SF is less than 1 . Furthermore , the results of the analysis are  displayed in the form of Liquefaction Potential Map . This map shows that the entire area of Lempuing be in an unsafe condition to the danger of liquefaction during an earthquake with a magnitude > 7.9 earthquake and bedrock acceleration of 0.4 g.
PEMETAAN DAYA DUKUNG TANAH UNTUK PONDASI DANGKAL DI WILAYAH PESISIR PANTAI KOTA BENGKULU Samsul Bahri; Makmun R. Razali; Kendar Aryadi Elsandy
Inersia: Jurnal Teknik Sipil Vol 8, No 1 (2016)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.842 KB) | DOI: 10.33369/ijts.8.1.49-58

Abstract

This research aims to analyze the capacity of resources support the land and give information to the public about the value of the power capacity of the soil to support a shallow Foundation in the area of the coast of the city of Bengkulu. This research analyzes the power capacity in support of land the formula Meyerhoft. The data used in the form of the data of sondir, physical soil test and deploy as many as 100 questionnaire respondents. The results of the questionnaire show that the widely used building Foundation community is kind of shallow Foundation with this type of Foundation is constantly mates stone times. The dimensions of the foundation gained as much as 8 type with the dominant dimension, namely 20/40 cm and 50 cm high with a total of as much as 28%. The sieve analysis test results show that land on the coast is poorlygraded sand, gravel sand, with little fine grain. The value of the smallest land grant support power worth 0.875 kg/cm2 with dimensions Foundation 30/50 cm high 40 cm in Kelurahan of Malabero. The value of the power of the highest land grant support totaling 5.358 kg/cm2 with the dimensions of the Foundation 20/40 cm height 50 cm in Kelurahan of Lempuing. Based on the results of the analysis of the soil indicate that support power rating power support land grant still capable to shoulder the burden of building on it. The value of the resource support land grant obtained from the sondir data value is equal to the value soil permit support power conversion results to SPT.