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Pengamanan Tebing Pantai Tanjung Playu Batam
No full textTanjung Playu Beach, Batam Island, is a wonderfull fishermen village. The housing and public facilities are built a long the coast. These buildings and facilities are subject to wave attack, especially during wave season and high tides. In order to combat this problem, a special research is carried out.This research is intended to analyze the problem and to find out the solution through the hydraulic model test. Based on this research, the design of sea wall is carried out in order to gct a building which environmentalyfriendly.Keywords: wave attack, hydraulic model test, sea wall
Characterization of Devcon Plastic Steel Adhesive on Mild Carbon Steel Steel
No full textThe objective of this research is to characterize mechanical and physical behaviors of adhesives bonding (butt and tap joints) on mild carbon steel. The research used an adhesive material of devcon plastic steel. Mechanical properties are tensile sftength, shear strength andtoughness of the joints.The major parameters of this research were adherends surface roughness Ra, adhesive thickness, curing time and curing temperature. Surface roughness of the carbon steel adherends are Ra = 0,52 pm, 0,76 pt and I,2l 1m' Adhesive thichtess varyfrom: 0,03 mm to 0,3 mm and curing time: 1, 2, 3, 4 hours at curing temperatures: 55, 70, 85, 100, 120 and 140 oC. The research has been conducted under static loads at room temperature'The results of static loads (tensile and shear loads) show that adhesive thiclorcss and odherends surface roughness influence signifcantly the strength and toughness of the joints'An increase in the adherends surface roughness will increase adhesive strengths. For certain surface roughness, the joints have an optimunt adhesive thiclorcss that produces a strength and toughness maximum. Heat lreatntent of the joints at curing temperature for certain curing timeinfluences significanlly shear stresses. An increase of curing time will increase shear stresses' At certain surface roughness and curing time (for example: Ra : 0,76 pn and curing time = 4 hours), this research shows that the joints have an optimum curing temperature. Specimenscured at elevated temperqture show generally the increasing strength, however there is an optimum temperature where cure exceed this temperature the strength begins decrease. idhesives bonding failure of butt joints are generally cohesive and lap joints have a mixed failure cohesive and adhesiveKeywords: adhesive bonding, mild carbon steel, devcon plastic steel, static load, butt joints
Penyusunan Model Konsepsual Basisdata untukSistemlnformasiKadasterMultiguna
No full textThe term of nrultipurpose cadastre is used to describe a system that is designed to record'store, and provide not only landlenure and land valuation idormation but also a wide varietyof information that ,o, u,u f*rtionally related to and referenced by property parcels' It meansthat multipurpose no,t oniy ,eceiues information and data from many sources' but it alsoprovides services and products for many purposes and users' The research is directed to designa conceptual model oi mltipuipose cadastre database for developing its information system'The conceptual model was developed using entity relationship diagram and represented inrelational database structure. A model of multipurpose cadastre,was also developed using someparcel based data that came fronr many ,)ur)rr. The model was situated in KelurahonTahunan, Yogtakarta'An information system of multipurpose cadastre based on the conceptual design can bedeveloped and it provided nol onlyiudicial andfiscal information' but also semices informationsuch as water, telephone, and electricity. In addition, some problems occurred in building themodel were also discussed'Keywords: multipurpose cadastre' conceptual desig
Karakteristik Arus Lalulintas Sekolah, (Studi Kasus: Kawasan Kota Baru, yogyakarta)
No full textAlumni Jurusan Teknik Sipil Fakultas Teknik UGMSigit PriyantoJurusan Teknik Sipil & Magister Sistem dan Teknik Transportasi Fakultas Teknik UGMAbstroctThe increase of demand in transportfor school octivities contriibutes inflow characteristics.The regulation of school entrance time begins at the same time, which is about at 07.00, causesthe surrounding streets experience an increased in trffic flow. Therefore, the study is toillustrate the influence of schools activities in traffic characteristics.Observation were conducted on streets in Kota Baru area, which is known as school-buildings area. The streets being observed were Jl. Cik Ditiro, Jt. C. Simanjuntak, JI. Sudirman,and Jl. Suroto. It was considered based on the result on recent study that these streets werehighly inJluenced by school activities.Findings from this research showed that school activities had influenced an (neragecontribution to sunounding streets up to 43%. Further, because of such high contribution,street experience a lower oflevel ofservice.PendahuluanLalulintas yang ada dewasa ini membutuhkanperhatian lebih mengingat semakin tingginyabeban dan tingkat pengeluaran untuk pemecahanpermasalahannya. Salah satu permasalahan yangmuncul dan cukup mengganggu khususnya diYogyakarta adalah arus bangkitan di pagi hariakibat aktivitas sekolah. Regulasi pemerintahmengenai waktu masuk sekolah yang samamengakibatkan membengkaknya beban aliranlalulintas dijaringan jalan, terutama jaringan jalanyang cenderung menjadi rute untuk siswa sekolah.Kemacetan berkaitan erat dengan volume,kecepatan dan kepadatan yang selanjutnya padapenelitian ini akan dijadikan sebagai parameteruntuk mengetahui seberapa besar pengaruhaktivitas sekolah terhadap aliran lalulintas padaruas jalan yang terpengaruh langsung. Arus jampuncak yang terjadi di Yogyakarra diidentifikasipada umumnya terjadi pada waktu-waktu tertentu,antara lain: saat pegawai masuk kantor, saatpelajar masu