4 research outputs found

    Manufacture of Specimens for Experiment the Main through Testing Pre Conditions

    Full text link
    In general, this study emphasizes the importance of reliability and validity, including quantitative research (focus his gaze on post positivism). Reliability of a study is determined by the accuracy of material selection, to obtain regularity in the manufacture of test specimens that produce research that is not biased (either on empirical studies, manuals, analytical and divaliditasi with the program), which of course is a methodological side. While on the theoretical side of course expected developments in the theory. Even desired new things in theory and methodology

    An Eksperimental Permeable Asphalt Pavement Using Local Material Domato Stone on Quality of Porous Asphalt

    Full text link
    The lot deposit of Domato Stone as local material from sea location in Banggai island in half Sulawesi of Indonesia. Was still not be exploited better. Some reseaarch in the field of road construction showed that Domato Stone was powefull enough when mixtured asphalt structure. Permeable asphalt pavement or porous friction course is commonly knows as porous asphalt. The porous pavement used in Japanes and europe. The pavement consists in a porous overlay allowing rainwater to flow down to the botton the overlay and then to drain on the edges of the pavement. Quality of porous asphalt was developed to drain pavement surface flow through itâs pores, because of is specific propertis to mesure itâs ability to drain the water ( Permeability ), a special measuring device is required. This study is aimed to measure the coefficient of permebility using the constanthead permeability test at transportation laboratory Hasanuddin University. The result were compared with the previous study. The test included horizontal and vertical permeability. There types of gradation were in comporated to : British Graduation, Binamarga Gradation, and Australian Gradation. The tests were carried out at optimum bitumen content, the result shows that the vertical permeability of porous asphalt usig British Gradation were : 0,0914, 0,2841 and 0,2912 Cm/sec. Respectively meanwhile for horizontal permeability were 0,1168, 03212, 0,2897 Cm/Sec. The Marshall stabilities were at in countary to the permeabilities, the porousity were comparable to the permeabilities. The results of research indicates that porous asphalt mixture showed an influence on the value of the characteristics of porous asphalt particularly at concrete waste fraction grading 50% retained 1/2 " and 50% natural crushed stone retained 3/8" where the values obtained from the analysis of optimum binder content is 9.5%. Based on the Scanning Electron Microscope (SEM) can be seen the microstructure and content of chemical elements present in the porous asphalt which prove that all elements of the liquid asbuton and concrete waste can blend and bind well

    XTRAORDINARY XPERIENCE HOTEL DENGAN PENDEKATAN DESAIN BANGUNAN HIJAU BERBASIS EDGE EXCELLENCE IN DESIGN FOR GREATER EFFICIENCIES DI MENTENG JAKARTA PUSAT

    Get PDF
    Penggunaan pendingin ruangan di bangunan tinggi sudah menjadi kebutuhan yang utama untuk menunjang kenyamanan aktivitas pengguna di dalamnya, dikarenakan tidak memungkinkan memanfaatkan aliran udara alami secara langsung untuk mendinginkan di dalam ruangan, kesulitan mengontrol kuantitas udara yang masuklah yang menjadi masalah untuk memanfaatkan aliran udara alami, semakin tinggi lokasi di atas tanah semakin tinggi pula kecepatan aliran angin dibandingkan dengan kecepatan angin di permukaan tahan. Nyatanya pendingin ruangan memakan penggunaan energi terbesar untuk operasional di sebuah gedung, hal konkret yang bisa kita lakukan saat ini sebagai perancang bangunan tinggi ialah mengatur bagaimana penggunaan energi pendingin ruangan tersebut bisa dikurangi, contohnya ialah mengatur orientasi massa bangunan yang berpengaruh terhadap peletakkan jendela bangunan tersebut, mengatur besaran jendela pun pengaruh terhadap penghematan energi, semakin kecil bukaan jendela semakin kecil pula energi yang digunakan. Pun demikian dengan bangunan hotel, salah satu tipologi bangunan yang memakan energi cukup besar, tidak memungkinakan untuk tidak menggunakan pendingin ruangan untuk setiap kamar sewanya, hotel bertujuan untuk memberikan pelayanan terbaik kepada pengunjungnya menjadi tantangan perancang untuk memaksimalkan pasif desain sehingga beban energi bisa dikurangi. Selain energi, penggunaan airpun sangat tinggi pada hotel, air digunakan untuk keperluan di kamar mandi setiap kamar tamu, memasak di dapur hotel dan laundy, ini menjadi perhatian juga agar penggunaan air bisa diminimalisasi, seperti menggunakan air limbah untuk flushing toilet, menyiram tanaman dll. Hal lain yang menjadi perhatian ialah penggunaan material, memaksimalkan potensi material yang ada di sekitar terlebih dahulu untuk mengurangi kegiatan transportasi material, mengefisiensikan bentuk sehingga penggunaan material bisa efektif tidak berlebihan, itu semua dimaksudkan untuk merespon keresahan global saat ini mengenai penggunaan energi yang besar dan berakibat terhadap lingkungan global
    corecore