12 research outputs found

    Perencanaan Struktur Gedung Perkantoran Tiga Lantai Menggunakan Beton Bertulang Jalan by Pass Kota Padang

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    Reinforced concrete is concrete that is given with extensive reinforcement and amount of reinforcement that is not less than the minimum value required, used for building structures that are able to withstand the forces that work. Planning office building structure using three concrete floors Bypass road town of Padang is intended to determine the dimensions of the floor plate, beams, columns, tie beam and foundation, which is able to withstand earthquake loads work plan and reinforcement to the structural elements of the building, in accordance with SNI 03-2847 -2002 and SNI 1726-2002. Structure which will be planned is an office building located in the region of tree floors 6 Padang earthquake. By using ETABS versi9 applications obtained in the amount of forces that occur. Of these forces gained size 30cm x 40cm beam with a 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press in the field. Size 40cm x 40cm column with 12 diameter 16mm principal reinforcement. Size 30cm x 40cm tie beam with 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm reinforcement press on the field. The foundation used piles with a 2 diameter 40cm depth of 15m. The foundation used are piles with a 2 pole diameter 40cm with a depth of 15

    Studi Kedalaman Dan Pola Gerusan Lokal Yang Terjadi Di Hilir Bendung Dengan Kolam Olakan Tipe Bucket Dan USBR III

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    Most of spillways failure in Indonesia are caused by local scouring that happens continuously at downstream, and at time local scouring get the foot of spillway will dangerous for its operational. This scour occurs because of advanced value of specific energy overflow with high head relatively so that it appear unbalance velocity flow and turbulence flow. An effort to protect foot spillway is build the structure energy dissipator. From this concept at foot spillway is designed with one, two, or more energy dissipator agree with condition and many variables at deform process mechanism appropriately. At laboratory two dimensional physical test had done the consideration of spillway with bucket of type stilling basin to conventional spillway and having USBR III stilling basin at many discharges pattern and its influence for hydraulic jump bucket flow, energy reduction, along with local scour at downstream. This local scouring was caused by major water flowing passing the dam where there is a high difference level between the top and the end of the dam. Furthermore, it generates inbalancing water flow speed and additional water turbulence. There are different approachs to prevent such damage, and for example by providing one or more additional construction at the end part of the dam. This structure is designed and installed at the bottom part of the dam. Various empirical functions have been developed to design this structure, and one of them is developed by Lacey, Laursen, Froehlich, Mellvile and so on. However, that function has some limitation. For examples are the local river and dam construction characteristics. Therefore, it is required to be validated by developing a model of dam contructed in a laboratory. Experiments was undertaken by using the model with different characteristics of water flow in order to investigate the scouring patter

    Perencanaan Irigasi Sistem Pompa Di Nagari Desa Baru Kecamatan Ranah Batahan Kabupaten Pasaman Barat

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    Irrigation pump system is one that is designed in such a type of irrigation possible for local irrigation water source has a lower elevation than the agricultural area to be drained, in other words the water raised and fed to irrigated areas with the help of a pump. The purpose of this paper as an effort to overcome the crisis of water shortages for agriculture in Nagari Desa Baru Kecamatan Ranah Batahan Kabupaten Pasaman Barat. The amount of evapotranspiration can be calculated using the modified penman method. Mainstay discharge calculated using the method FJ. MOCK and obtained the minimum water availability is 1,291 m3 / sec and a maximum of 6,737 m3 / sec. To determine the water company needed cropping pattern was rice-crops-rice, used five alternative time from planting to the maximum water demand is 0.180 m3 / sec. Pump capacity obtained with the 8.2 m high manometric is 6200 liters / min and the amount of pump power 4 units with each pump 11 kilowatt or 14.74 HP, a pump operating at peak demand is for 10.452 hours. Planned primary channel with trapezoidal cross-section width of the base line (b) is 0.54 m and the width on the wet channel cross-section (a) is 1.60 m, height wet channel cross section (h) is 0.54 m

    Analisis karakteristik pengguna jalan di Kota Padang

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    Pemakaian bahan bakar minyak (BBM) cenderung meningkat selaras dengan pertambahan jumlah kendaraan bermotor di Indonesia. Pada level nasional, BBM adalah sumber energi utama dimana mayoritasnya dikonsumsi oleh moda transportasi darat seperti mobil pribadi/kendaraan penumpang dan angkutan barang. Sedangkan angkutan umum hanya mengkonsumsi 9% saja. Terdapat peluang untuk mengurangi konsumsi pemakaian BBM oleh sektor transportasi khususnya transportasi darat, melalui peningkatan market share penggunaan angkutan umum dengan mengajak pengguna jalan untuk beralih dari pemakaian mobil pribadi ke angkutan umum/BRT seperti yang diharapkan oleh pemerintah. Untuk itu terlebih dahulu perlu di analisis karakter pengguna jalan eksisting agar dapat di rancang skema angkutan umum yang dapat memenuhi kebutuhan dan kepuasan pengguna jalan yang merupakan tujuan dari penelitian ini. Harapannya adalah luaran yang dihasilkan dapat digunakan oleh stakeholder terkait sebagai pertimbangan dalam merancang angkutan umum yang dapat memberikan manfaat dan keuntungan maksimum bagi pengguna jalan. &nbsp

    Studi Kedalaman dan Pola Gerusan Lokal Yang Terjadi di Hilir Bendung dengan Kolam Olakan Tipe Bucket dan USBR III

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    Most of spillways failure in Indonesia  are caused by local scouring that happens continuously at downstream, and at time local scouring  get the foot of spillway will dangerous for its operational. This scour occurs because of advanced value of specific energy overflow with  high head relatively so that it appear unbalance velocity flow and turbulence flow.  An effort to protect foot spillway is build the structure energy dissipator. From this concept at foot spillway is designed with one, two, or more energy dissipator agree with condition and many variables at deform process mechanism appropriately.  At laboratory two dimensional physical test had done the consideration of spillway with bucket of type  stilling basin to conventional spillway and having USBR III stilling basin at many discharges pattern and its influence for hydraulic jump bucket flow, energy reduction, along with local scour at downstream.  This local scouring was caused by major water flowing passing the dam where there is a high difference level between the top and the end of the dam. Furthermore, it generates inbalancing water flow speed and additional water turbulence. There are different approachs to prevent such damage, and for example by providing one or more additional construction at the end part of the dam. This structure is designed and installed at the bottom part of the dam. Various empirical functions have been developed to design this structure, and one of them is developed by Lacey, Laursen, Froehlich, Mellvile and so on. However, that function has some limitation. For examples are the local river and dam construction characteristics. Therefore, it is required to be validated by developing a model of dam contructed in a laboratory. Experiments was undertaken by using the model with different characteristics of water flow in order to investigate the scouring patter

    Perencanaan Struktur Gedung Perkantoran Tiga Lantai Menggunakan Beton Bertulang Jalan By Pass Kota Padang

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    Reinforced concrete is concrete that is given with extensive reinforcement and amount of reinforcement that is not less than the minimum value required, used for building structures that are able to withstand the forces that work. Planning office building structure using three concrete floors Bypass road town of Padang is intended to determine the dimensions of the floor plate, beams, columns, tie beam and foundation, which is able to withstand earthquake loads work plan and reinforcement to the structural elements of the building, in accordance with SNI 03-2847 -2002 and SNI 1726-2002. Structure which will be planned is an office building located in the region of tree floors 6 Padang earthquake. By using ETABS versi9 applications obtained in the amount of forces that occur. Of these forces gained size 30cm x 40cm beam with a 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press in the field. Size 40cm x 40cm column with 12 diameter 16mm principal reinforcement. Size 30cm x 40cm tie beam with 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm reinforcement press on the field. The foundation used piles with a 2 diameter 40cm depth of 15m. The foundation used are piles with a 2 pole diameter 40cm with a depth of 15

    Perencanaan Irigasi Sistem Pompa di Nagari Desa Baru Kecamatan Ranah Batahan Kabupaten Pasaman Barat

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    Irrigation pump system is one that is designed in such a type of irrigation possible for local irrigation water source has a lower elevation than the agricultural area to be drained, in other words the water raised and fed to irrigated areas with the help of a pump. The purpose of this paper as an effort to overcome the crisis of water shortages for agriculture in Nagari Desa Baru Kecamatan Ranah Batahan Kabupaten Pasaman Barat. The amount of evapotranspiration can be calculated using the modified penman method. Mainstay discharge calculated using the method FJ. MOCK and obtained the minimum water availability is 1,291 m3 / sec and a maximum of 6,737 m3 / sec. To determine the water company needed cropping pattern was rice-crops-rice, used five alternative time from planting to the maximum water demand is 0.180 m3 / sec. Pump capacity obtained with the 8.2 m high manometric is 6200 liters / min and the amount of pump power 4 units with each pump 11 kilowatt or 14.74 HP, a pump operating at peak demand is for 10.452 hours. Planned primary channel with trapezoidal cross-section width of the base line (b) is 0.54 m and the width on the wet channel cross-section (a) is 1.60 m, height wet channel cross section (h) is 0.54 m

    Analisis Karakteristik Perjalanan dan Perilaku Pengguna Jalan Terhadap Moda Trans Padang Virtual

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    Laju pertumbuhan kendaraan bermotor di Indonesia rata-rata hampir mencapai 7% setiap tahunnya, jauh lebih tinggi dibandingkan persentase pertambahan jalan baru yang hanya sekitar 0.25%. Ketidakseimbangan ini di anggap memperburuk dampak negatif dari sektor transportasi seperti kemacetan pada ruas jalan utama, krisis energi, dan kematian akibat kecelakaan di jalan raya dikarenakan semakin bertambahnya pengguna kendaraan pribadi seperti sepeda motor dan mobil penumpang. Untuk mengantisipasi dampak negatif yang lebih besar lagi, maka laju pertumbuhan kendaraan bermotor perlu di kontrol. Pengguna kendaraan pribadi di dorong untuk beralih ke moda transportasi yang sustainable dan ramah lingkungan, sesuai keinginan pengguna jalan seperti Trans Padang. Penelitian ini bertujuan untuk menganalisis karakteristik perjalanan pengguna jalan dan perilakunya terhadap layanan Trans Padang virtual dengan fasilitas layanan tertentu menggunakan survei Revealed Preference dan Stated Preference. Dari hasil analisis diketahui bahwa 50% responden bekerja pada sektor swasta, dan 33 persen adalah mahasiswa dan pelajar. Mayoritas responden menggunakan kendaraan pribadi untuk melakukan perjalanannya, dimana sepeda motor berkontribusi 75%, dan mobil penumpang 7%. Waktu tempuh rata-rata adalah 19.4 menit. Biaya perjalanan rata-rata adalah Rp.5136. Rasio antara captive dan choice user adalah 81%:19%. Faktor yang dapat medorong pengguna jalan untuk beralih ke layanan Trans Padang adalah kenyaman berupa fasilitas AC dan jumlah kursi pada moda Trans Padang, tarif dan juga waktu tempuhnya. WTP adalah berada pada rentang Rp.1500-Rp.3500, dan ATP rata-rata adalah Rp.2088-Rp.2663 tergantung kategori pengguna Trans Padang. Responden kategori umum memiliki kecenderungan untuk menggunakan layanan Trans Padang virtual yang lebih tinggi dari responden kategori pelajar. Operator layanan Trans Padang dapat mempertimbangkan hasil penelitian ini, dan mensimulasikannya pada Koridor 3 layanan Trans Padang, yang merupakan rencana penelitian berikutnya

    Calibrating Trip Distribution Neural Network Models with Different Scenarios of Transfer Functions Used in Hidden and Output Layers

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    The transfer function is used to process the summation outputs in the hidden and output nodes. It can generally be categorized as either a non-linear or linear function. Examples are Sigmoid and Purelin functions representing non-linear and linear transfer functions. It is often mentioned that there is no standard guideline in the transfer function selection, and the Sigmoid or Logsig is widely used. However, the transfer function and training algorithm have a procedural relationship in training Multilayer Feedforward Neural Network (MLFFNN), a famous Artificial Neural Network model structure. In the feedforward stage, this function transforms the linear summation output to either linear (Purelin) or non-linear form (Sigmoid). In the backpropagation stage, this function is used in calculating the magnitude of change in the connection weights involving its derivative. Nine scenarios of MLFFNN were developed based on different transfer functions used in both hidden and output layers. In order to make fair comparisons, each scenario has the same initial connection weight. The modelling is conducted at the calibration level only; however, it involves different levels of complexity. It was calibrated by using the Levenberg-Marquard training algorithm. The results suggest that some calibrations failed and negative estimations occurred once non-linear transfer functions were used in hidden and output layers. It was found that Purelin was superior to other transfer functions. However, it has a weakness which is its negative estimations
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