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Irpan Hidayat
Bina Nusantara University
Computer Science & IT Engineering Mathematics

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Aplikasi Geofoam Sebagai Material Timbunan di Atas Tanah Lunak Irpan Hidayat; Andryan Suhendra
ComTech: Computer, Mathematics and Engineering Applications Vol. 2 No. 1 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i1.2722

Abstract

Geofoam is a geosintetik material made of Expanded Polystyrene (EPS) and Xtruded Polystyrene (XPS), which has a low weight property which makes geofoam widely used as a lightweight fill material and has been applied in Europe, especially in Eastern Europe. This is a preliminary research that emphasizes on the use of geofoam as a fill material on soft ground through theoretical analysis using Plaxis program. Supporting data used covers data of basic and fill ground taken from specific locations which are planned for subsequent research as a field test. Based on the Plaxis program results, the use of geofoam as a fill material give a higher safety factor value with a smaller deformation compared to laterite soil. This result indicates that the use of geofoam as a fill material can be considered to be applied in the country. 
Tingkat Kepuasan Parkir Kampus Anggrek Binus University Ditinjau dari Fasilitas Geometri dan Survei Kepuasan Parkir Irpan Hidayat
ComTech: Computer, Mathematics and Engineering Applications Vol. 4 No. 1 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i1.2796

Abstract

Evaluated from the level of saturation, Anggrek Campus Binus University facilities are considerably able to accommodate all vehicles to park. However, from observations over the years, even though the capacity still seems able to accommodate, there are still some drivers who have difficulty in placing their vehicle in the provided parking lots. In results, it take a long time for drivers to do the maneuvers. Due to this reason, there is a need to review the geometric conditions of a parking space and user parking satisfaction at Anggrek Campus. The research method is to conduct a survei for the parking geometry in a questionnaire form, which aims to determine the satisfaction level of the parking facility from the user side. The research results acquired for parking plot 4000 x 2400 mm, the type of vehicles that meet the requirements of free space to park in the lateral direction of the plot is city car, jeep, and MPV. As for the parking plot 5000 x 3000 mm, free parking space requirements for the lateral direction meet for all types of vehicles (city car, jeeps, MPV, sedans, and SUVs). Results stated that 39% of respondents are comfortable in terms of ease of parking, 37% of respondents express comfort in opening the car door after parking their vehicle, 24% said parking signs are very useful for them in getting the parking information. However, 22% of respondents expressed their discomfort in the ease of parking due to the geometry of 90° parking pattern.
Analisis Perhitungan Jembatan Gelagar I pada Jembatan Jalan Raya dan Jembatan Kereta Api Irpan Hidayat
ComTech: Computer, Mathematics and Engineering Applications Vol. 4 No. 1 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i1.2797

Abstract

The bridge is a means of connecting roads which is disconnected by barriers of the river, valley, sea, road or railway. Classified by functionality, bridges can be divided into highway bridge and railroad bridge. This study discusses whether the use of I-girder with 210 m height can be used on highway bridges and railway bridges. A comparison is done on the analysis of bridge structure calculation of 50 m spans and loads used in both the function of the bridge. For highway bridge, loads are grouped into three, which are self weight girder, additional dead load and live load. The additional dead loads for highway bridge are plate, deck slab, asphalt, and the diaphragm, while for the live load is load D which consists of a Uniform Distributed Load (UDL) and Knife Edge Load (KEL) based on "Pembebanan Untuk Jembatan RSNI T-02-2005". The load grouping for railway bridge equals to highway bridge. The analysis on the railway bridges does not use asphalt, and is replaced with a load of ballast on the track and the additional dead load. Live load on the structure of the railway bridge is the load based on Rencana Muatan 1921 (RM.1921). From the calculation of the I-girder bridge spans 50 m and girder height 210 cm for railway bridge, the stress on the lower beam is over the limit stress allowed. These results identified that the I-girder height 210 cm at the railway bridge has not been able to resist the loads on the railway bridge.
Studi Parkir Kampus Anggrek Kondisi Eksisting dan Penambahan Lahan Parkir Baru Terhadap Pengguna Kampus Anggrek Binus University Irpan Hidayat; Amelia Makmur; Godeliva Juliastuti
ComTech: Computer, Mathematics and Engineering Applications Vol. 2 No. 2 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i2.2854

Abstract

A parking area is built in a building to facilitate vehicle users of the building. Based on this, Binus University planned to build parking area in its several campus. One interesting issue to explore is the parking capacity at Anggrek Campus. The purpose of this study was to determine the saturation levels of parking for the existing condition compared to the addition of new parking area. To perform analysis turnover parking calculation is used . Based on research results the number of cars entering Anggrek campus was greater than the volume of available parking at the campus (turnover = 1.58), so there was a lot of trouble to find a parking space that makes parking users find alternative parking spaces such as parking area 52). However, since the 8th floor parking area functioned, the turnover rate reduced to 0.54 which indicates that there was a saturation level decrease of 65%. 
Co-Authors Amelia Makmur Andryan Suhendra Godeliva Juliastuti