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INDONESIA
Eco Rekayasa
Published by Universitas Muhammadiyah Surakarta
ISSN : 19074026     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Eco Rekayasa: Jurnal Teknik Sipil fokus di bidang Teknik Sipil dan Lingkungan, antara lain: Struktur, Hidro, Transportasi, Geoteknik, Manajemen Konstruksi, dan Lingkungan.
Arjuna Subject : -
Articles 40 Documents
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ANALISIS PONDASI BORED PILE DENGAN PRINSIP PROBABILITAS (STUDY KASUS PROYEK HOTEL QUEST SOLO) Susanto, Agus; Listyawan, Anto Budi; Puspitasari, Dewi
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Probabilistic design began more realistic solution compare to the deterministic (conventional) design as it can describe and accommodate of soil variability.  Althought the old approach is widely used, it is confirmed, that almost all natural soils are spatially variable in their properties and rarely homogenous.  This paper focuses on the analysis and design of bored pile foundation on the project of  Solo Quest Hotel based on the probabilistic theory.  The research begins with a certain pre-liminary analysis to prepare the probabilistic analysis of bored pile foundatiaon design, by characterizing the cohesion (cu) from convertion of N value on three SPTs data taken from the site.  It involves an extensive analysis to perform the best-fit distribution of pointwise variability of cohesion (cu) using computer program written in MATLAB.  The next step is deriving the point statistics (i.e. mean, standard deviation, and coefficient of variation) across the site.  Finally, a certain monte carlo analysis using Crystal Ball computer program is carried out to design the bored pile foundation by inputing all data taken from MATLAB analysis.  The bored pile installed in 12 m depth and the diameters of bored pile 0,6 m respectively.  The  bored pile experiences 43.354,455 kN vertical load.  The results show that there is no objection to hypothesis of normality in the Chi-Square analysis.  Compare to the deterministic analysis, the probabilistic design needs more bored pile to resist the vertical load in a safety factor 2,5 and confident limit 95%.  Furtheremore, the higher variation of  cu data the larger number of bored pile is desired.
REHABILITASI SALURAN TARUM BARAT TERKAIT TATA RUANG WILAYAH JABODETABEK Sumiarsih, Made; Legono, Djoko; Kodoatie, Robert
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

West Tarum Canal (WTC) is a canal to convey water for irrigation to the surroundings area  and for distributing raw water to Jakarta area. The total length of WTC is 69.8 miles, starting from the Curug weir to the Ciliwung River. WTC has been operated for 40 years. Recently, there has been a decline in function of this canal up to 70%. For that reason, this canal is required rehabilitation to restore it function. This paper highlights the planning and implementation of the rehabilitation work related to spatial planning of Jabodetabekpunjur.
PEMAHAMAN SISWA SMA TENTANG ARTI MARKA JALAN DAN PERATURAN LALU LINTAS Jatiputro, Achmad Hercahyo; Setiyaningsih, Ika; Mulyono, Gotot Slamet
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The rapid development of Surakarta closely impact on people mobility and transportation in the city. It can be seen from traffic volume increasing on some major roads in Surakarta. At peak hour, traffic in Surakarta is dominated by motorcycle. According to Police Traffic Unit of Surakarta data, the highest ranked accident by the type of mode of transportation is a mo-torcycle and the highest accident victims in the productive age which is 16-30 years. By education level, the highest number of traffic violations conducted by the level of high school education. Based on this condition it is necessary to do research on the characteristics of high school students who use motorcycles. The focus of this research is to determine high school student understanding of the road markings meaning and traffic regulations. This study uses a questionnaire tools that have previously been tested for validity and reliability. Research sample is high school student of Batik 2 Surakarta with a total sample of 140 respondents.The results showed that the level understanding to road markings obtained 78 respondents are very understand, 51 respondents including category of understand and as many as 11 respondents do not understand. The results showed that the level understanding to road markings obtained 78 respondents are very understand, 51 respondents including category of understand and as many as 11 respondents do not understand. While the results of the discussion on the understanding of traffic regulations showed the respondents' level of understanding with the three classifications which is very understand there were 121 respondents, 19 respondents are understand classification and classification do not understand as much as 0 respondents.
PENAMBAHAN SATU LANTAI TINGKAT PADA PORTAL GEDUNG BETON BERTULANG TIGA LANTAI Asroni, Ali
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The aim of this research was to compare three and four floors of reinforce concrete portal design, and the  possibility of the addition of one floor above the three floors building based on building safety. Research was carried out by taking the example of two office building portals constructed in the earthquake zone-one. Both portals were made from the same sketch plan and designed in the full elastic system. The load combinations (dead load, live load, and earthquake load) were subjected to both portals. The loads complied with the Indonesian Code (Tatacara Perhitungan Struktur Beton Untuk Bangunan Gedung, SNI 03-2847-2002). The dimension of portal structures (beam, column, sloof, and foundations) and their reinforcements were properly designed to carry the loads. Based on the dimension of portal and their reinforcement obtained, a comparison could be made up of total reinforcing and spacing of begel on both portals, and the possibility of the addition of one floor above the three floors building. The results showed that the dimensions of the structure (column, sloof, and foundation) of four floors portal were bigger than three floors, had greater number of total longitudinal reinforcement (include of beam), and the begel space of edge beam was more tightly. Moreover, the addition of one floor above the three floors would be dangerous for building safety  and users.
KAJIAN KETERSEDIAAN LAHAN DITINJAU DARI RENCANA STRATEGIS PEN KAMPUS BERKELANJUTAN (STUDI KASUS DI BEBERAPA LOKASI KAMPUS FKIP UNS) Sukatiman, Sukatiman
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The research purposed was  mapping campuses situations toward to sustainable strategic plan.  Kind of research is qualitative descriptive focused on specific targets. Its comprises of exsisting condition in 3 location campuses,  those were PTK Pabelan campus,  PGSD campus, and FKIP UNS Kentingan campus. The research showed that : 1) environment condition of three (3)location  campuses  had  sustainable infrastructure,  available  of  reforestasion,  and    cozy environment.  2)  PTK  Pabelan  and PGSD Laweyan  campuses had  available  open  space  suitable with regulation  of Public Works. 3) FKIP Kentingan  campus was over land used.
PENAMBAHAN ABU JERAMI DAN ABU SEKAM PADI PADA CAMPURAN BATU BATA UNTUK MENINGKATKAN KUALITAS DAN EFISIENSI PRODUKSI BATU BATA INDUSTRI TRADISIONAL Rahmawati, Anis; Saputro, Ida Nugroho
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The purpose of this study was to determine the effect of rice husk ash and ash rice straw against physical and mechanical characteristics of the bricks, and also to determine the minimal burning time in the manufacture of clay bricks with additional ingredients such waste to achieve physical and mechanical characteristics bricks in accordance with standard bricks. Variations of burning time is 12 hours, 18 hours, 24 hours, and 30 hours. While the variation of rice husk ash and rice straw ash is 0%, 5%, 10%, 15% and 20%. The bricks were tested based on physical and mechanical characteristics. Physical characteristics include specific gravity test, fuel and shrinkage porosity test. While the mechanical characteristics are compressive strength test.Based on these results, it was found that all the bricks compressive strength test in accordance with ISO standards SK-S-04-1989-F, which is entering grade 25 and 50. The density is smaller than the standard that is 1.8 to 2.6 g / cm3. Test shrinkage derived fuel is smaller than the standard that is <15%. While the porosity test found to be greater than the standard (<20%). The highest compression strength is 7.35 MPa is achieved with brick with an additional 20% ash burning rice straw in 12 hours. Its low specific gravity of 1.32 g / cm3, achieved by brick with the addition of 20% rice husk ash on burning 30 hours. Losses lowest fuel that is 0.90% achieved by brick with the addition of 20% rice husk ash on burning 12 hours. While the lowest was 33.17% porosity is achieved by brick with the addition of 10% rice husk ash on burning 24 hours.
PENAMBAHAN SATU LANTAI TINGKAT PADA PORTAL GEDUNG BETON BERTULANG TIGA LANTAI Ali Asroni
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The aim of this research was to compare three and four floors of reinforce concrete portal design, and the  possibility of the addition of one floor above the three floors building based on building safety. Research was carried out by taking the example of two office building portals constructed in the earthquake zone-one. Both portals were made from the same sketch plan and designed in the full elastic system. The load combinations (dead load, live load, and earthquake load) were subjected to both portals. The loads complied with the Indonesian Code (Tatacara Perhitungan Struktur Beton Untuk Bangunan Gedung, SNI 03-2847-2002). The dimension of portal structures (beam, column, sloof, and foundations) and their reinforcements were properly designed to carry the loads. Based on the dimension of portal and their reinforcement obtained, a comparison could be made up of total reinforcing and spacing of begel on both portals, and the possibility of the addition of one floor above the three floors building. The results showed that the dimensions of the structure (column, sloof, and foundation) of four floors portal were bigger than three floors, had greater number of total longitudinal reinforcement (include of beam), and the begel space of edge beam was more tightly. Moreover, the addition of one floor above the three floors would be dangerous for building safety  and users.
KAJIAN KETERSEDIAAN LAHAN DITINJAU DARI RENCANA STRATEGIS PEN KAMPUS BERKELANJUTAN (STUDI KASUS DI BEBERAPA LOKASI KAMPUS FKIP UNS) Sukatiman Sukatiman
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The research purposed was  mapping campuses situations toward to sustainable strategic plan.  Kind of research is qualitative descriptive focused on specific targets. Its comprises of exsisting condition in 3 location campuses,  those were PTK Pabelan campus,  PGSD campus, and FKIP UNS Kentingan campus. The research showed that : 1) environment condition of three (3)location  campuses  had  sustainable infrastructure,  available  of  reforestasion,  and    cozy environment.  2)  PTK  Pabelan  and PGSD Laweyan  campuses had  available  open  space  suitable with regulation  of Public Works. 3) FKIP Kentingan  campus was over land used.
HAZARD INDEX and BUILDING VULNERABILITY ASSESEMENT IN PURBAYAN, KOTAGEDE, YOGYAKARTA Yunalia Muntafi
Eco Rekayasa: Jurnal Teknik Sipil Vol. 12. No. 2, September 2016
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

There are so many natural disasters ever happened on many regions of Indonesia. The destructive impact of it has brought into focus the need for proper risk assessment. The great earthquake of May 26 2006 in Yogyakarta was responsible for the deaths of more than 5,000 people. The flood of 3 April 2008 in the same general area caused some devastation. The landslide of 22 March 2010 destroyed the Kaligesing-Yogya highway. Purbayan is one of villages in Kotagede district which is quite frequently hit by various kinds of disasters. Disasters such as these occurred in Purbayan need proper risk assessment studies to minimize the death toll and destruction. This study determined to get the hazard index of each kind of disaster that ever happened in Purbayan, Kotagede to find the biggest disaster risk of it. Analysis is performed by giving score to each kind of hazard, namely earthquake, flooding, landslide, strong wind, and fire uses risk assessment. This study was begunby observing and interviewing chief of neighborhood, some community leaders and local residents, then analyze it uses hazard identification analysis. Result in this study indicate that the hazard risk index of earthquake risk is 3,0, flooding is 2,46, fire is 1,58, and both landslide and strong wind is 1,0. This study shows that earthquake is the biggest disaster risk in Purbayan, Kotagede. The number of residential buildings that are vulnerable due to the earthquake as much as 36%, which is dominated by the building of type C, E, and F, which is the home using a combination of masonry wood frame, masonry without reinforcement, and a frame/wall of bamboo.Key words : disaster, earthquake, vulnerability assessment, hazard index
PENAMBAHAN ABU JERAMI DAN ABU SEKAM PADI PADA CAMPURAN BATU BATA UNTUK MENINGKATKAN KUALITAS DAN EFISIENSI PRODUKSI BATU BATA INDUSTRI TRADISIONAL Anis Rahmawati; Ida Nugroho Saputro
Eco Rekayasa: Jurnal Teknik Sipil Vol. 11. No.1, Maret 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study was to determine the effect of rice husk ash and ash rice straw against physical and mechanical characteristics of the bricks, and also to determine the minimal burning time in the manufacture of clay bricks with additional ingredients such waste to achieve physical and mechanical characteristics bricks in accordance with standard bricks. Variations of burning time is 12 hours, 18 hours, 24 hours, and 30 hours. While the variation of rice husk ash and rice straw ash is 0%, 5%, 10%, 15% and 20%. The bricks were tested based on physical and mechanical characteristics. Physical characteristics include specific gravity test, fuel and shrinkage porosity test. While the mechanical characteristics are compressive strength test.Based on these results, it was found that all the bricks compressive strength test in accordance with ISO standards SK-S-04-1989-F, which is entering grade 25 and 50. The density is smaller than the standard that is 1.8 to 2.6 g / cm3. Test shrinkage derived fuel is smaller than the standard that is 15%. While the porosity test found to be greater than the standard (20%). The highest compression strength is 7.35 MPa is achieved with brick with an additional 20% ash burning rice straw in 12 hours. Its low specific gravity of 1.32 g / cm3, achieved by brick with the addition of 20% rice husk ash on burning 30 hours. Losses lowest fuel that is 0.90% achieved by brick with the addition of 20% rice husk ash on burning 12 hours. While the lowest was 33.17% porosity is achieved by brick with the addition of 10% rice husk ash on burning 24 hours.

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