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INDONESIA
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR
Published by Universitas Tadulako
ISSN : 20886004     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 82 Documents
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KAJIAN KINERJA SHORT-CUT SUNGAI MADIUN DALAM PENURUNAN PROFIL MUKA AIR BANJIR Purwadi, Hanugerah
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 3, No 1 (2013)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Sungai Madiun terletak di Provinsi Jawa Timur. Bagian hulu dimulai dari Kabupaten Ponorogo dan bagian hilir di Kabupaten Ngawi, bermuara di Sungai Bengawan Solo. Sungai Madiun memiliki panjang kurang lebih 72 km dengan konfigurasi alur berkelok-kelok, dimana memiliki luas DAS 2294 km2. Sebelum tahun 1990, di Sungai Madiun secara teratur terjadi banjir yang menyebabkan genangan di sekitar Kota Madiun. Oleh karena itu, dirasa sangat penting upaya pengendalian berupa pembangunan tanggul dan pelurusan alur (short-cut), dll. Tujuan penelitian ini adalah untuk memperkirakan pengaruh pelurusan alur terhadap penurunan muka air banjir dengan melakukan simulasi menggunakan Program HEC-RAS. Dengan melakukan beberapam kali simulasi pada beberapa kondisi, dapat diketahui kinerja pelurusan alur terhadap penurunan muka air banjir. Hasil simulasi menunjukkan bahwa pelurusan alur Sungai Madiun dapat menurunkan muka air banjir dengan kisaran 12.91 % sampai 22.33 % untuk beberapa kala ulang banjir. Kata Kunci : aliran, pelurusan alur, penurunan muka air
KAPASITAS LENTUR BALOK BETON BERTULANG DENGAN MENGGUNAKAN AGREGAT KASAR TEMPURUNG KELAPA Suarnita, I Wayan
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 3, No 2 (2013)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Beam and plate are dominant element of a reinforced concrete building which experience pressure and flexural moment due to gravity which are live and dead loads. This research aims to find out the value of flexural capacity of reinforced concrete beam using coconut shell as coarse aggregate. The laboratory test results and the theoretical result were compared. In this research, beam of 175 x 350 x 1400 mm were used, the identical push-load used were 2 D 5,6  mm and variation of the number of tensile reinforcement were 4 D 7,8 mm; 5 D 7,8 mm, and 6 D 7,8 mm. Each variation is presented in three samples. Hence, resulting different maximum loads.The result obtained as concrete unit weight, which are 1,773 gr/cm3, push-load strength of 13,59 MPa, average flexural capacity of 95 kN for BL 41 to BL 43 and 115 kN for BL 51 to BL 63. The result of flexural capacity of BL 51 to BL 63 was not fully reached due to incompetency of the testing instrument.   Keywords: flexural capacity, beam, coconut shell concrete
KAJIAN DAMPAK PERUBAHAN PENGGUNAAN LAHAN TERHADAP DEBIT ALIRAN DAS CIUJUNG Sulaeman, Dede; Hidayat, Yayat; Rachman, Latief Mahir; Tarigan, Suria Darma
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff
PEMANFAATAN CAMPURAN MORTAR DAN PARTIKEL KAYU SEBAGAI ELEMEN INTI BALOK BETON KOMPOSIT Maricar, Shyama; Nirmalawati, Nirmalawati; Rivani, Agus
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Lightweight concrete has ability to increase workability and reduce structure load such as gravity and earthquake loads. Therefore lightweight and adequately rigid structural system is required.  Based on efficiency of material application and adaptation optimization to the stress distribution system, composite system become one alternative that can be utilize, especially on beam structure. In this case, collaboration between lightweight concrete and ordinary concrete will be the deciding factor to achieve the objectives mentioned above. To construct lightweight concrete, timber particles obtained from sawmill industrial waste with density of 0,35 – 0.65 gr/cm3 will be highly possibly to utilize. This research aims to obtain the composition of concrete and timber particles mix that its strength can be measured in order to get effective composite concrete beam. A number of tests to the mix of concrete and timber particles were conducted to find out its pressure strength, tensile strength and elasticity, in order to get the percentage of timber particles used in concrete that will be used to create composite concrete with ordinary concrete. Sawmill and furniture industrial waste in form of timber particles can be utilized as material to create lightweight concrete which was limited only to nonstructural element. Keyword  : Normal/Ordinary concrete,mortar concrete ,coconut timber particles
ANALISIS KEMIRINGAN DASAR SALURAN PADA SALURAN TERSIER DAERAH IRIGASI DONGGALA KODI Setiyawan, Setiyawan; Affandy, Erwin; Anzar, Lisa Arnita
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 7, No 2 (2017)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

As the plantation area, Donggala Kodi with mountainous topography made this region becomes an obstacle for farming people in which the function of the channel to deliver water from the river to the plantation area is not properly functioned. Tertiary channel of Donggala Kodi will highly possible to experience scour or erosion at the base of the channel, due to the large angle of the channel bottom slope so that the water velocity in the channel  increased. This study aims to determine the performance of tertiary channel of Donggala Kodi. The research process begins with the collection of data which is then analyzed to evaluate the performance of tertiary channel. Donggala Kodi tertiary channel are using channel masonry 4,82 m/s, 5,49 m/s, 5,69 m/s, 5,61 m/s, 0,89 m/s, 5,03 m/s, 2,98 m/s, 3,76 m/s that its requirement maximum speed is 2.00 m/s and the minimum speed is 0.25 m/s. So it can be seen that the flow rate of the tertiary irrigation channel of Donggala Kodi do not meet the standards set by Standard Guidelines for  Irrigation Planning Criteria Planning Section Channel KP-03, 2013.
Dampak Lalu Lintas Akibat Aktivitas Best Western Coco Hotel Terhadap Kinerja Ruas Jalan Basuki Rahmat Palu Pratama, Aditya Bayu; Tahir, Anas; Mashuri, Mashuri
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 5, No 1 (2015)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Palu, the capital city of Central Sulawesi province is experiencing economic progress. Progress is shown by the supporting facilities such as one of the biggest hotel in Palu that is Best Western Coco Hotel at Basuki Rahmat Street.The existence of this hotel will increase human activities towards the hotel by using a vehicle, so that could increase the amount of vehicles in this area. The total additional volume of these vehicles can cause additional traffic load in Basuki Rahmat Street and influence its performance. This study was aims to determine the performance of Basuki Rahmat road on the existing condition and in the future without and with activity affected the hotel. The analysis conducted by using the method of Indonesian Highway Capacity Manual, 1997. In this research a survey of traffic volume, side barrier and the vehicle travel time were conducted. The survey was conducted on Thursday, September 4th 2014. Base on the result of analysis on the  performance of Basuki Rahmat Street, without development for existing condition the value was obtained as DS = 0,30 and  DS on 2014 condition = 0,47 by level of services (LOS) C. While the conditions of the development of the area obtained value of DS=0.31, DS condition 2014 = 0,48 by level of services (LOS) = C. The handling of road start from additional of median on the road section will continue to maintain the performance of roads in a state with a level of service B, by degree of Saturation in each direction in 2024 is 0.44 and 0.41.
Perilaku Geser Balok Kayu Kelapa (Suatu Kajian Eksperimental dengan Konsep Energi Fracture) Oktivina, Hermin; Chauf, Kusnindar A.
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 1, No 1 (2011)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Analisis karakteristik kayu perlu didekatkan pada kondisi material non-homogen dengan menerapkan konsepenergi fracture. Konsep energi fracture menjelaskan adanya energi elastisitas dan potensial yang mempegaruhi dimensiretak. Konsep ini sangat relevan diaplikasikan pada material kayu kelapa, karena kayu kelapa tersusun dari serat sejajarlongitudinal yang cenderung gagal geser. Dari hasil uji sifat fisis dan mekanis menurut ISO 1975 dan uji lentur balokempat titik, maka dilakukan analisis pola deformasi terhadap kurva deformasi berdasarkan konsep energi fracture.Dalam hal ini diperoleh fakta bahwa kerapatan kayu kelapa berturut-turut, bagian atas 0,64 gr/cm3, bagian tengah 0,83gr/cm3dan bagian bawah 0,91 gr/cm3 dengan kurva deformasi elastis non linear, kecuali tarik sejajar serat.Perbandingan tegangan geser dan lentur balok adalah 9,76% dengan keruntuhan geser. Pola kerusakan geser ditandaiadanya retak horizontal dimulai dari tumpuan kemudian merambat kearah tengah bentang balok, dan tegangan gesermaksimum lebih dulu tercapai daripada tegangan lentur
Characteristic of Concrete made of Ternary Cementitious System Siregar, Atur P. N.
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 5, No 2 (2015)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Utilizing industrial waste materials containing pozolanic compounds has been widely investigated for cement replacement. Fly ash and microsilica are materials having significant pozolanic compounds and can be used to create ternary cementitious system. Slump of fresh concrete, porosity and compressive strength of hardened concrete were parametric study investigated in this study of ternary cementitious system.  Three types of concrete mixtures, i.e. concrete mixture using original Portland cement (OPC) as normal concrete, OPC-fly ash-microslica without superplasticiser, and OPC-fly ash-microslica with additional superplasticiser have been investigated. Fresh concrete using fly ash and microsilica demonstrated having higher slump and lower porosity than normal concrete. Compressive strength of concrete using fly ash and microsilica were higher than normal concrete. Utilizing fly ash and microsilica as ternary cementitious system was found to have significant effect on compressive strength and porosity of hardened concrete.
PERBANDINGAN PENGGUNAAN DINDING PENAHAN TANAH TIPE KANTILEVER DAN GRAVITASI DENGAN VARIASI KETINGGIAN LERENG Setiawan, Hendra
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 1, No 2 (2011)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Untuk meningkatkan stabilitas lereng, ada beberapa metode yang bisa digunakan, salah satunya adalah dengan menggunakan konstruksi dinding penahan tanah. Dinding penahan tanah adalah konstruksi yang berfungsi untuk menahan tekanan tanah lateral yang ditimbulkan oleh tanah dibelakang dinding penahan tanah. Ada dua jenis dinding penahan tanah yang sering digunakan di lapangan, yaitu type gravitasi dan type kantilever. Penelitian ini bermaksud mengadakan perbandingan penggunaan kedua type dinding penahan tanah tersebut pada berbagai ketinggian lereng. Data tanah yang digunakan dalam penelitian ini menggunakan data tnah pada lokasi BTN Teluk Palu Permai. Hasil penelitian menunjukkan bahwa pada ketinggian lereng sampai dengan 6 m, angka keamanan atau stabilitas pada type kantilever lebih tinggi dari type gravitasi, baik untuk stabilitas terhadap penggulingan, penggeseran, maupun keruntuhan kapasitas dukung
Analisis Investasi Pengembangan Bandar Udara Mutiara Sis Aljufri Palu Labaso, Eko Rakhmat
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 7, No 1 (2017)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Central Sulawesi is one of the six locations which determined as the economic growth corridor. It shows that infrastructure development is the main priority of this province. Mutiara SIS Aljufri Airport Palu is one of the several developed infrastructure in this region. The reason for this, the existency of transportation services is positively correlated to the economic and community development. Therefore, the government of Palu and the management of Mutiara SIS Aljufri Airport Palu agreed to improve the level of Mutiara SIS Aljufri Airport Palu as an international airport. This study aims to determine the developing investment of Mutiara Airport SIS Aljufri Palu. In addition, this study apply several analysis methods, such as, NPV, IRR and Profitability Index (PI) method. The result shows that the investment in the Mutiara SIS Aljufri Airport Palu is feasible based on the method of Net Present Value (NPV), Internal Rate of Return (IRR) and Profitability Index (PI) analysis.This investmental so provides enhanced services for users and air transport service providers. Based on the Gross Domestic Product (GDP) at constant 2000 prices in Quarter III (2014), the economic growth of Central Sulawesi Province increase compare to the the same quarter in previous year (2013). The proportion of economic growth is 6.58 % (y-on-y).

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