1,720,983 research outputs found
KARAKTERISTIK DINAMIK PELAT LANTAI SEMI PRECAST DENGAN PERKUATAN SHEAR CONNECTOR
Full text linkAbstrak: Pelat lantai bertingkat sederhana biasanya dikerjakan dengan sistem monolit yang memerlukan bekisting dan juga perancah. Salah satu cara yang diperkenalkan kepada masyarakat adalah menggunakan sistem semi pracetak. Dalam sistem ini struktur dibagi menjadi panel-panel kecil agar memungkinkan untuk dikerjakan tanpa bantuan alat berat. Penelitian dilakukan pengujian dinamik menggunakan mesin penggetar yang diletakkan di tengah bentang. Pengujian dilakukan terhadap 4 buah benda uji berupa panel pelat lantai, yang terdiri dari 2 buah pelat monolit dan 2 buah pelat komposit, dengan ukuran panjang 3000 mm, dan tinggi yang sama yaitu 120 mm serta dengan lebar masing-masing 200 mm dan 400 mm. Hasil pengujian menunjukkan bahwa frekuensi alami sistem struktur baik pelat monolit maupun pelat komposit yang yang rusak mempunyai frekuensi alami yang lebih kecil. Hasil eksperimen mode displacement menunjukkan hasil bahwa pelat yang ada kerusakan mempunyai displacement lebih besar. Kata Kunci : panel semi pracetak, shear connector, beban dinamik, frekuensi alamiAbstract: A building floor is usually made of with a simple monolith system which needs concrete formwork. One alternative that is introduced to the public is using the semi-precast system. In this system structure is divided into smaller panels to make it possible to do without heavy equipment. In this study the dynamic testing using a vibrator machine that is put in the mid-span. This test consists of 4 pieces of the specimen plate panel, which consists of 2 monolith plates and 2 composite plate (semi precast), with a length of 3000 mm, and the same height is 120 mm and a width of each 200 mm and 400 mm. The results showed that the natural frequency of the system structure damaged had a smaller natural frequency. The displacement mode experimental results showed that plate damage had a larger displacement. Keywords: semi-precast panels, shear connectors, dynamic loads, natural frequency
ANALISIS PERBANDINGAN BIAYA DAN WAKTU PEKERJAAN PELAT METODE CAST IN SITU DENGAN SEMI PRECAST PADA RUMAH TINGGAL DUA LANTAI
Full text linkAbstrak: Sistim pracetak sudah banyak digunakan pada bangunan bertingkat banyak. Penggunaan metode pracetak dengan ukuran panel yang cukup besar menjadi tidak efisien jika diterapkan pada pekerjaan bangunan bertingkat dua sederhana. Dalam penelitian ini alternatif yang diperkenalkan dalam pembuatan pelat lantai adalah dengan menggunakan metoda semi precast berupa panel-panel yang lebih kecil agar memungkinkan untuk diangkat tanpa bantuan alat berat.Penelitian yang dilakukan mempunyai tujuan untuk mengetahui berapa besar penghematan waktu dan biaya yang digunakan dengan menggunakan pelat semi precast dibanding dengan menggunakan sistem cast in situ. Dengan harapan akan didapat suatu metode pelaksanaan dan cara perancangan yang lebih efisien serta dapat mengoptimalkan penggunaan pelat semi precast sebagai komponen bekisting sekaligus sebagai komponen elemen struktural lantai bangunan gedung dan dapat diaplikasikan pelaksanaannya pada pekerjaan swakelola oleh masyarakat.Penelitian dilakukan pada rumah di Jalan Prambanan Timur II Semarang dengan luasan tanah sebesar 247.5 m2, luas bangunan 300 m2, luas pelat lantai sebesar 129,5 m2 dan pelat tandon air sebesar 13 m2. Dari hasil analisis total biaya pembangunan rumah tinggal dengan metode cast in situ adalah Rp 1.348.511.161,00 dan dengan metode cast in situ adalah Rp 1.286.646.693,00. Dari hasil tersebut nampak bahwa menggunakan metode semi precast selisih atau lebih murah sebesar Rp 61.864.468,00 atau sebesar 4,59 %. Dari hasil analisis kurva S pembangunan rumah tinggal tersebut dengan menggunakan metode cast in situ membutuhkan waktu 48 minggu, sedangkandengan menggunakan sistem semi precast membutuhkan waktu 42 minggu. Dari hasil tersebut nampak bahwa menggunakan metode semi precast selisih atau lebih cepat 6 minggu atau sebesar 12,5%. Hasil penelitian tersebut menunjukkan bahwa dari segi biaya dan waktu, metode pelaksanaan dan cara perancangan pelat semi precast lebih efisien daripada metode pelat cast in situ dan dapat diaplikasikan pelaksanaannya pada pekerjaan swakelola oleh masyarakat. Hasil penelitian tersebut menunjukkan bahwa dari segi biaya dan waktu, metode pelaksanaan dan cara perancangan pelat semi precast lebih efisien daripada metode pelat cast in situ dan dapat diaplikasikan pelaksanaannya pada pekerjaan swakelola oleh masyarakat. Kata Kunci: pelat lantai, semi precast, Rancancangan Biaya Anggaran, kurva S Abstract: The precast system has been widely used in multi-storey buildings. The use of precast methods with large enough panel sizes becomes inefficient when applied to simple two-story building work. In this study an alternative introduced in the manufacture of floor plates is to use semi-precast method of smaller panels to enable to be removed without the help of heavy equipment.The research has a purpose to find out how much time and cost savings are used by using semi-precast plate compared with using cast in situ system. With the hope of getting a method of implementation and design more efficient way and can optimize the use of semi-precast plates as components of formwork as well as components of structural elements of the building floor and can be applied to the implementation of self-managed work by the community.The study was conducted at the house on Jalan Prambanan Timur II Semarang with a land area of 247.5 m2, a building area of 300 m2, a floor plot area of 129.5 m2 and a water supply plate of 13 m2. From the analysis of total cost of residential development with method of cast in situ is Rp 1.348.511.161,00 and with method of cast in situ is Rp 1.286.646.693,00. From the result it appears that using semi precast method difference or cheaper is Rp 61.864.468,00 or 4.59%. From the residence curve S residence analysis using cast in situ method takes 48 weeks, sedangkandengan using semi precast system takes 42 weeks. From the results it appears that using semi precast method difference or faster 6 weeks or 12.5%. The results of this study indicate that in terms of cost and time, the method of execution and the design of semi-precast plates more efficient than cast in situ plate method and can be applied to the implementation of self-managed work by the community. The results of this study indicate that in terms of cost and time, the method of execution and the design of semi-precast plates more efficient than cast in situ plate method and can be applied to the implementation of self-managed work by the community. Keywords: floor plates, semi precast, Budget Cost Design, S curv
Implementasi Building Information Modeling Dalam Perencanaan Struktur Rumah Susun Soekarno Hatta Semarang
Full text linkConstruction digitization activities are very influential in supporting project work planning. So in planning, innovations are needed in order to achieve maximum results. The Ministry of PUPR issued PUPR Ministerial Decree No. 2018 concerning the Construction of State Buildings which requires the use of the Building Information Modeling method. Structural planning is very necessary to obtain a building that complies with the rules of the Indonesian National Standard. The structural planning of the Soekarno Hatta Semarang Flats refers to the regulations of the Indonesian National Standard (SNI), SNI 1726:2019 (Procedures for Planning Earthquake Resistance for Building and Non-Building Structures), SNI-03-1729-2019 (Structure Planning Procedures) Steel for Buildings), Loading Planning Regulations for Houses and Buildings 1987, I. Wahyudi (Charts and Tables for Reinforced Concrete Calculations). The structural planning of the Soekarno Hatta Semarang Flats includes the planning of the upper and lower structures. In planning the structure is modeled through SAP 2000 V.22 and Autodesk Revit 2022. The input loads are dead load, live load, wind load and earthquake load. The results of the planning use a combination of 32 earthquake loads. There are 7 types of beams, namely B64A, B67, B56A, B45A, B34A, B32A, and B22A. There are 3 types of columns, namely K88, K97, and K33A. There are 6 types of floor plates, namely S12A, S12A1, S12B, S12B1, S12C, and S12C1. As well as using a pile foundation with a diameter of 60 cm.Kegiatan Digitalisasi Konstruksi sangat berpengaruh dalam menunjang perencanaan pekerjaan proyek. Maka dalam perencanaan diperlukan inovasi-inovasi agar tercapai hasil yang maksimal. Kementrian PUPR menerbitkan permen PUPR No 2018 tentang Pembangunan Bangunan Gedung Negara yang mewajibkan digunakannya metode Building Information Modeling. Perencanaan struktur sangat diperlukan untuk mendapat Gedung yang sesuai dengan aturan Standar Nasional Indonesia. Perencanaan Struktur Rumah Susun Soekarno Hatta Semarang ini mengacu pada peraturan Standar Nasional Indonesia (SNI), SNI 1726:2019 (Tata Cara Perencanaan Ketahanan Gempa untuk Struktur Bangunan Gedung dan Non-Gedung), SNI-03-1729-2019 (Tata Cara Perencanan Struktur Baja untuk Bangunan Gedung), Peraturan Perencanaan Pembebanan untuk Rumah dan Gedung 1987, I.Wahyudi (Grafik dan Tabel Perhitungan Beton Bertulang). Perencanaan Struktur Rumah Susun Soekarno Hatta Semarang ini meliputi perencanaan struktur atas dan struktur bawah. Dalam perencanan struktur dimodelkan melalui SAP 2000 V.22 dan Autodesk Revit 2022. Pembebanan yang di input seperti beban mati, beban hidup, beban angin dan beban gempa.Hasil perencanaan menggunakan kombinasi beban gempa sebanyak 32 kombinasi. Didapat 7 tipe balok yaitu B64A, B67, B56A, B45A, B34A, B32A, dan B22A. Terdapat 3 tipe kolom yaitu K88, K97, dan K33A. Terdapat 6 tipe plat lantai yaitu S12A, S12A1, S12B, S12B1, S12C, dan S12C1. Serta menggunakan pondasi tiang pancang dengan diameter 60 cm
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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