Radin Inten II Airport is a national flight in Lampung Province. In this study using the technical analysis stated preference which is the approach by conveying the choice statement in the form of hypotheses to be assessed by the respondent. By using these techniques the researcher can fully control the hypothesized factors. To determine utility function for model forecasting in fulfilling request of traveler is used regression analysis with SPSS program. The analysis results obtained that the passengers of the dominant airport in the selection of modes of cost attributes than on other attributes. From the result of regression analysis, the influence of independent variable to the highest dependent variable is when the five attributes are used together with the R square value of 8.8%. The relationship between cost, time, headway, time acces and service with the selection of modes, the provision that states whether or not there is a decision. The significance of α = 0.05 with chi-square. And the result of Crame's V test average of 0.298 is around the middle, then the relationship is moderate enough.

Pelabuhan Bakauheni merupakan salah satu pelabuhan di Indonesia yang berlokasi di kecamatan Bakauheni, Kabupaten Lampung Selatan. Penggunaan transportasi berbasis jalan rel dirasakan sangat efektif dan efisien dalam melayani tingginya tuntutan kebutuhan pergerakan dikarenakan transportasi berbasis jalan rel memiliki kapasitas dan kecepatan yang lebih tinggi dibandingkan transportasi berbasis jalan raya. Penelitian ini dilakukan dengan tujuan mendesain geometri jalan rel Bakauheni-Sidomulyo dan mendesain drainase jalan rel. Geometri jalan rel didesain berdasarkan pada beban lintas yang merupakan turunan dari jumlah demand angkutan eksiting dan tipe kereta yang melintasinya dengan mempertimbangkan faktor keamanan, kenyamanan, ekonomi dan lingkungan. Pada perancangan jalan rel ini menggunakan jalan rel dengan kelas jalan I dengan double track dan lebar sepur 1435mm sepanjang 39,173 km. Jalan rel ini direncanakan dengan 7 lengkung horisontal (dengan jari-jari 1400m) yang menggunakan tipe lengkung Spiral Circle Spiral (SCS) dan 6 lengkung vertikal (dengan jari-jari minimum 15736,5 m). Struktur jalan rel ini terdiri dari rel R60, penambat elastic ganda, bantalan beton, tebal balas 30 cm dan sub balas 30 cm. Drainase samping di buat seragam dengan bentuk segi empat dengan dimensi lebar x tinggi yaitu 50 x 30 cm, tinggi jagaan 38,7 cm. Penampang gorong-gorong yang digunakan berbentuk lingkaran dengan diameter seragam sebesar 0,60m.

Kota Bandar Lampung sebagai ibukota Provinsi Lampung menyebabkan jumlah pergerakannya tinggi sehingga kemacetan lalu lintas tidak dapat dihindari pada beberapa ruas jalan di Kota Bandar Lampung. Penyelesaiaan atas permasalahan tersebut oleh pemerintah Kota Bandar Lampung dilakukannya pembangunan flyover di beberapa ruas jalan yang mengalami kemacetan, salah satunya di ruas Jalan Pramuka. Flyover Pramuka dibangun pada tahun 2017 dan memiliki daya tahan menjaga arus stabil berjangka waktu hingga 10 tahun dari saat keberadaan flyover memberikan pengaruh positif terhadap penurunan volume capacity rasio (VCR). Waktu jenuh jalan eksisting dan flyover diketahui dengan menggunakan metode analisis sensitivitas melalui pembebanan bertahap. Hasil penelitian menunjukkan bahwa pembangunan flyover menyebabkan kondisi jalan eksisting dan sisi flyover mengalami waktu jenuh pada tahun 2028-2038 sehingga penting untuk Pemerintah Kota Bandar Lampung mengantisipasinya dengan menetapkan aturan intensitas bangunan. Jenis kegiatan yang terdapat di wilayah internal dan wilayah eksternal di dominasi oleh perdagangan dan jasa. Pengaturan intensitas bangunan sebagai bentuk pengoptimalan pembangunan flyover penting untuk memperhatikan pula arahan rencana struktur ruang yang ikut mempengaruhi beban lalu-lintas pada jalan eksisting dan flyover. Kata Kunci: flyover, intensitas bangunan, wilayah internal, wilayah eksternal

Resonance could occur as a wave propagates through the soil resulting from seismic vulnerability activities. The resonance impact resulting from the local site effects may cause civil infrastructures failure such as railway bridge collapse. This study presented possibilities of the resonance in the BH77 railway bridge in Lampung, Indonesia. Characteristics of the site effect around the bridge were evaluated using microtremor data. Measurements were made at nine locations, with two points were on the bridge, and seven other points were scattered around the bridge. Microtremor data were analyzed using the Horizontal to Vertical Spectral Ratio (HVSR) method to find natural frequencies and amplification factors. Furthermore, the site effect around the bridge was analyzed using the natural frequency, the amplification factor, and the seismic vulnerability index (Kg) to have site effect characteristics. Results of the study indicated that the research area showed amplification factors (A0) ranging from 5.15 to 12.19. The site natural frequency obtained from the study was about 4.01-7.27 Hz. The seismic vulnerability index in the study area was 4.2-19.4. The obtained natural frequency (F0) on the bridge had a value between 5.20 and 6.19 Hz, and the natural frequency value at the site was 4.01-7.27 Hz, respectively. This phenomenon indicated that there would be a possibility of resonance on the railway bridge. It is interesting to note that this case study might be beneficial to practicing engineers and researchers.

Recovery efforts following a disaster can be slow and painstaking work, and potentially put responders in harm's way. A system which helps identify defects in critical building elements (e.g., concrete columns) before responders must enter a structure can save lives. In this paper we propose a system, centered around an image based three-dimensional (3D) reconstruction method and a new 3D crack detection algorithm. The image-based method is capable of detecting and analyzing surface damages in 3D. We also demonstrate how the robotics can be used to gather the images from which the reconstruction is created, further reducing the risk to responders. In this regard, image-based 3D reconstructions represent a convenient method of creating 3D models because most robotic platforms can carry a lightweight camera payload. Additionally, the proposed 3D crack detection algorithm also provides the advantage of being able to operate on 3D mesh models regardless of their data collection source. Our experimental results show that 3D crack detection algorithm performs well constructions, successfully identifying cracks, reconstructing 3D profiles, and measuring geometrical characteristics on damaged elements and not finding any cracks on intact ones.