Indonesia Conference Directory

Corresponding Author
Noviyanthy Handayani

Institutions
Program Studi Teknik Sipil
Fakultas Teknik
Universities Muhammadiyah Palangkaraya
Jl. RTA. Milono km. 1,5 Palangka Raya 73111

Abstract
Peat water in the City of Palangka Raya has a high degree of acidity, which is indicated by a pH level of 4.5. Acidic water will affect the physical and mechanical properties of concrete and make the concrete corrosive. This is the background of this research. This research was conducted to determine the effect of peat water on the concrete quality of the original plan of 300 kg/cm2. Analysis was carried out on soaking concrete on peat water for 30 days, 60 days and 90 days. As a comparison, water from the Kahayan river is used. The test results showed that the concrete soaked in peat water 30 days, 60 days and 90 days showed an average compressive strength of 223.98 kg/cm2, 227.75 kg/cm2 and 209.65 kg/cm2. Whereas the concrete which was immersed with Kahayan river water showed an average compressive strength of 234.54 kg/cm2, 254.90 kg/cm2, and 215.68 kg/cm2. It can be concluded that the concrete soaked in peat water shows a decrease in the strength of concrete as much as 26.5% while Kahayan river water by 21.6%.

Keywords
Concrete, peat water, Kahayan river water

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/8xRj7NuqendH

Corresponding Author
Tuswan ST

Institutions
(a) Department of Naval Architecture, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
*zubaydi[at]na.its.ac.id
(b) Department of Civil Infrastructure Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

Abstract
Partially debonding at the skin/core interface during fabrication and/or in-service life is recognized to be the primary pre-failure modes in the ship sandwich structure. The vibration-based damage detection approach is a promising option to ascertain damage existence. The numerically dynamic behavior subjected to harmonic loading of partially debonded sandwich is investigated using two model discretizations: spring element and real contact model. The material consists of two thin steel skins bonded to the lightweight core of resin/clamshell powder. The considerable influence of the debonding ratio, location, shape on the structural modal parameters (natural frequency, mode shape, and structural time history dynamic responses) based on two model discretizations is rigorously compared. To be confident in results of the numerical analysis, an experimental modal analysis of initial model is carried out to validate the correctness of the FE model. It is recognized that the spring element method is less convenient for handling the debonding problem than the surface contact definition. The result shows that the higher natural frequencies and mode shapes are more sensitive to the debonding presence. The results demonstrate that both methods can be useful for assessing practical problems related to the non-destructive damage detection in ship structure.

Keywords
Steady-state Dynamic, Sandwich, Debonding, Finite Element, Ship Structure

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/6KVY9RwnQCzp

Corresponding Author
Mandiyo Priyo

Institutions
Universitas Muhammadiyah Yogyakarta

Abstract
Earned Value Management (EVM) is a methodology that combines scope, schedule, and resource measurements to assess project performance and progress, it involves the integration of the three key elements of the project which are scheduled, work scope, and cost. Based on the literature, various benefits have been associated with the use of EVM in project management. The research aims to analyze four units of building construction project using earned value management method which consists of an analysis of project performance, estimates of cost and time for project completion and analysis of planning estimation against project completion. Based on the analysis uses earned value management in four building projects above, from the aspect of time: three buildings were completed ahead of schedule and one building was completed behind of the schedule. At the same time, from the aspect of cost, three buildings spend cost under of the budget and the actual cost of one building is higher than the estimated budget.

Keywords
Earned value management, construction, project management

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/2qkxVCuHMUJg

Corresponding Author
Angelina Metta Arilia

Institutions
(a) Lecturer of Universitas Pembangunan Nasional Yogyakarta, Indonesia. Jl. SWK 104, Condongcatur, Depok, Kecamatan Depok, Ngropoh, Condongcatur, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55283
(b) Student of Universitas Pembangunan Nasional Yogyakarta, Indonesia. Jl. SWK 104, Condongcatur, Depok, Kecamatan Depok, Ngropoh, Condongcatur, Kec. Depok, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55283
(c) Senior Hydrogeology engineer PT. ANTAM UBPN Pomalaa, Kolaka, Sulawesi Utara

Abstract
In designing the dimensions of the open channel in open pit mining, there are factors that should be considered including rainfall intensity, runoff coefficient, and catchment area. These three main factors will determine the amount of runoff water entering the pit and affect the dimensions of the open channels that are expected to handle the runoff water discharge. This research aims to analyse the effect of selection method for calculating time of concentration and rainfall plans for the dimensions of the drainage that are needed to handle the runoff water. This research uses primary data from direct observation on the field and secondary data based on rainfall data from BMKG station. Izzard, William, and field observation method are used to determine the time of concentration, while maximum, average, and minimum method are used to determine the rainfall plans. Both factors are greatly influence the value of rainfall intensity. The results of this research are open channel (drainage) dimensions which are calculated based on rainfall intensity which is first calculated using the analysis of several methods. It is expected that the results are appropriate and in accordance with the needs of the mine openings so that mining operations can run smoothly.

Keywords
Open Channel, Time of Concentration, Rainfall plans, Rainfall Intensity, drainage system, Izzard Method, Williams Method

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/7vFamPYCu439

Corresponding Author
Fathoni Usman

Institutions
(a) Institute of Energy Infrastructure, Universiti Tenaga Nasional, Kajang 43000, Selangor, Malaysia
*fathoni[at]uniten.edu.my
(b) Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Bantul 55183, Indonesia
(c) Department of Civil Engineering, Faculty of Engineering, Universitas Riau, Pekanbaru 28293, Indonesia.

Abstract
The development of a lightweight structure is being a growing trend in the construction industry all over the world. Ferrocement, a thin-shell concrete reinforced with layers of continuous wire mesh, had seen as an alternative material for this type of construction. However, due to the small thickness and large surface area of the ferrocement, potential of cracks due to drying shrinkage is high. In this study, Polypropylene fibres (PPF) was added to ferrocement mortar as secondary reinforcement. This paper presents the effect of adding PPF to the flexural strength of ferrocement. It was found that under flexural test, 66.6% of the variation in flexural strength of ferrocement was influenced by volume fraction, Vr; 31.4% by percentage of PPF, Pf and 2% by the interaction of Pf and Vr.

Keywords
Ferrocement; Polypropylene Fibers; Flexural Strength

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/4fanM9u7zhbH

Corresponding Author
Taufiq Ilham Maulana

Institutions
Department of Civil Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Brawijaya Street, Bantul, Yogyakarta, 55183, Indonesia

Abstract
Prestressed concrete has been widely used in structural buildings, especially for big span length purposes. The prestressed concrete dimension cross sections normally are fixed, provided by the factory based on their experience for every span length. However, this size aspect can be developed to make better improvement. In this study, I and box girder shapes were modified with the same total cross sectional area. Three types of modification have been made for each girder shape by giving the space on the middle for I girder and changing form from trapezoidal to rectangular section for box girder. The number of steel tendons for this research was made typically and same so that the stress and displacement can be compared fairly. Manual calculation was performed for all samples and was completed under three circumstances namely initial condition, loading condition, and final condition. Also, the manual calculation is according to Indonesian provisions, which are SNI 2833 2016 for the earthquake load and SNI 1725 2016 for normal loading on bridges. From the result, it is known that one modified shape for each girder shape has met the criteria for the smallest stress and displacement.

Keywords
prestressed concrete, shape modification, stress and displacement, i girder, box girder

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/VXwxzqpZtn8b

Corresponding Author
Noor Rohman

Institutions
a) Students of Civil Engineering Department, Faculty of Civil, Environmental & Geo Engineering, Institut Teknologi Sepuluh Nopember
Jalan Raya ITS, Surabaya 60111, Indonesia
*noor.rohman2001[at]gmail.com
b) Civil Engineering Department, Faculty of Civil, Environmental & Geo Engineering, Institut Teknologi Sepuluh Nopember, Surabaya
c) Regional and Urban Planning Department, Faculty of Architecture, Design, and Planning, Institut Teknologi Sepuluh Nopember, Surabaya

Abstract
Home is a basic human need. One of the ease of obtaining houses for Low-income Households (LIH) is a subsidized housing program. This program aims to make it easier for LIH to buy and occupy a decent house through a Subsidized Housing Mortgage (SHM). As of the end of 2017, the Government channeled funds of more than 32 trillion rupiah to finance 846,406 housing units through SHM. The problems that occur in the field are that there are still many houses that are not/have not been occupied by their owners. This study aims to determine the effectiveness of subsidized housing occupancy and the factors that influence it. Primary data collection through observation and interviews with homeowners. The results showed that only 73.65% of the houses were occupied by their owners. Of the number of houses occupied, only a small number of owners directly inhabit after signing the SHM contract. Based on factor analysis, there are at least 4 main factors that affect the housing occupancy of the subsidized namely the quality of houses, housing facilities, housing locations, and personal factors of the owner.

Keywords
Effectiveness; Low-Income Households (LIH); Houses Quality; Housing Facilities; Housing Locations

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/tkhGc93nuYzj

Corresponding Author
Mutiara Triwiswara

Institutions
Center for Handicraft and Batik
Jalan Kusumanegara 7, Yogyakarta, Indonesia
triwiswara[at]gmail.com

Abstract
Batik as cultural heritage of Indonesia has gained growing interest from international customers as well as local ones. However the increasing production is also followed by negative impacts to environment in the form of wastewater. Most of batik industries dispose their wastewater directly into the environment without prior treatment. Therefore, it is necessary to build a wastewater treatment plant (WWTP) as a pilot project for the industries. This paper is focused on efficiency evaluation of the wastewater treatment process for batik industry WWTP at Center for Handicraft and Batik which can serve as a model for small scales industries. Wastewater samples were taken from each treatment unit outlets. Eleven parameters were analyzed from the samples: pH, temperature, biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), total dissolved solids (TDS), phenol, total chrome, total ammonia (NH3-N), sulphides (S) and oil and grease. Treatment efficiency was calculated for all parameters and the effluent analysis results were compared with permissible maximum values as stated in Local Regulation of Special Region of Yogyakarta No. 7 of 2016 on Wastewater Discharged Standards. The results indicate that each treatment process can reduce the concentration of the pollutants. The overall value final effluent was below the standard so the effluent can be discharged safely to the environment.

Keywords
batik wastewater; wastewater Treatment Plant (WWTP); treatment efficiency

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/aAcQVNFebfRv

Corresponding Author
Nur Ikawati

Institutions
a) Master of Engineering in Natural Disaster Management, Universitas Gadjah Mada, Yogyakarta, Indonesia
*nur.ikawati[at]ymail.com
b)Civil and Environtmental Engineering Department, Universitas Gadjah Mada, Yogyakarta, Indonesia

Abstract
The main factor causing the decline in water storage capacity of civil infrastructures especially reservoirs in Indonesia is the high rate of sedimentation. Land degradation by erosion in the reservoir catchment area is contributed to the high sedimentation. Mitigation on sedimentation problems can be carried out by estimating the erosion rate and sediment yields occurring as well as controlling erosion and sedimentation. This study aims to identify the rate of erosion and sedimentation that occurs in the Logung Reservoir catchment area and assess its countemeasures. RUSLE-GIS based grid model is applied to estimate the erosion. Several erosion and sedimentation countermeasure scenarios were analyzed to determine the significance level of erosion reduction and sedimentation that occurred. The results showed that the rate of erosion in the upstream watershed of Logung Reservoir was 803,823 m3 / year while the sediment rate was obtained at 177,568 m3 / year. Sediment countermeasure with land use arrangements provides more significant results than with the construction of check dams. Construction of check dam is only able to reduce sedimentation by around 22%. Land use arrangements can reduce sedimentation by 45%. While the combination of controls between the two methods can reduce up to 87%.

Keywords
Soil erosion, Sediment, RUSLE, GIS, Land use, Mitigation

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/ZeVLAnJ3Mbtq

Corresponding Author
Reysha Rizki Amanda Lubis

Institutions
a) Civil Engineering Deprtement, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia
*reyshalubis79[at]gmail.com
b) Civil Engineering Deprtement, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia

Abstract
Due to construction planning of medium speed railway in Indonesia, a new standard of track quality is needed. The construction of medium speed railway with 160 km/h of highest speed concepted by Indonesian government require a thorough research and examination on construction technical, maintenance and operational pattern. And The most important thing that need to be thoroughly assessed is TQI as behalf of track quality. TQI is Track Quality Index that could be a standard to evaluating track quality. Another functions of TQI are degradation monitoring, determining maintenance method, summarising the whole track condition related to safety factor and ride comfort. TQI is obtained by measurement using special rollingstock i.e track geometry car. The recent TQI in Indonesia cannot made as standard on medium speed railway because it is only prevailed for 120 km/h of maximum speed on existing track. Hence, research and assessment is needed to determine a value of TQI. TQI is deviation values that summarised from 4 parameters i.e track gauge, cross level, longitudinal and lateral. The method used in this research is PT. KAI method by decreasing tolerance range of its parameters. Hopefully by using that method, the result of this research would considerable as reference of upcoming researches

Keywords
Track Quality Index (TQI); Geometry Parameters; Track Geometry Quality; Medium Speed Train

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/AHmTJKd7Zrjy

Corresponding Author
Puji Harsanto

Institutions
Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta

Abstract
Hydrograph is a diagram, curve, or graph that illustrates the relationship between discharge flow parameters and time. Estimating flood hydrograph is the main analysis on river constructions design. Synthetic unit hydrograph (SUH) is one of method to design a flood discharge when there is no dischrage series data in a long time. In fact, the SUH methods does not always provide an accurate result. In this research, flood hydrograph analysis using Nakayasu, ITB, GAMA-1, and Snyder methods are applied on the upper Progo River basin. Daily rainfall in January 2012 data is used and is divided into 3 conditions, namely Case 1 (dated on 1-7 January), Case 2 (dated on 8-13 January), and Case 3 (dated on 20-26 January). The streamflow data from Borobudur AWLR station is applied for model calibration. The Thiessen polygon is used for analyzing the average rainfall and ABM method for converting the daily to hourly data. The results show that the peak discharge using Nakayasu, Snyder and GAMA-1 method is 296.5% greater than observed data but the result using ITB method is 68.3% smaller than observed data. The parameter calibration is an important step fordesigning peak discharge in a practical work.

Keywords
hydrograph parameters, synthetic unit hydrograph, peak discharge, progo river

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/YCqVRHJhKbUx

Corresponding Author
Nuryani Tinumbia

Institutions
a) Civil Engineering Departement, Faculty of Engineering, Pancasila University, Indonesia
*nuryani[at]univpancasila.ac.id
b) Industrial Engineering Department, Faculty of Engineering, Pancasila University, Indonesia

Abstract
The presence of airport train provides an alternative for users to access Soekarno-Hatta Internarional Airport in avoiding congestion on the road due to increased traffic volume. Since the first operating, there has been a rapid change in fare and a significant increasing thus effecting on purchasing ability of people. This study aims to evaluate the airport train fare based on Willingness to Pay (WTP) of users. Data collection is carried out by users interviews (stated preference) at the station and on the train. Analysis of WTP uses Dicrete Choice Model by comparing scenario improvement services and existing services. The attributes used are cost and headway. The result of the estimated value of WTP is IDR 83,969, where it is greater than the existing fare. So, it is still possible to increase the fare which is certainly by improving service performances.

Keywords
Willingness to Pay, Fare, Airport Train

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/c2HtGLxkDf7W

Corresponding Author
EVA OLIVIA HUTASOIT

Institutions
a) Department of Civil Engineering, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia *evaoliviahutasoit[at]gmail.com
b) Department of Civil Engineering, Institut Teknologi Sepuluh Nopember Surabaya
c) Department of Civil Engineering, Institut Teknologi Sepuluh Nopember Surabaya

Abstract
Removal of water from the pavement structure provides many benefits to reduce damage on the road. Base or sub-base is a part of pavement structure, which will infiltrate the rainfall water before enter to subgrade. The research is focused on evaluating the material properties of sub-drainage layer based on Bina Marga, The Indonesian Highway Agency, Spesification 2010. This code is providing the gradation range which can be used for evaluating the aggregate of the sub-drainage layer. A series of experimental test was performed for an A class Aggregate to evaluate their performance based on the California Bearing Ratio (CBR) and modified permeability testing. The sample used in this study were consist of eight variations of A Class Agregate. Furthermore, this variation also divided into two categories which are three variations based on Bina Marga Spesification 2010 and five variations outside of Bina Marga Specification. All of the sample will be tested and evaluated to obtain the most suitable aggregate for the sub-drainage layer, which has the highest permeability and the lowest reduction of CBR value. Based on the experimental test, it was found that the average permeability was increased as the increase size of the aggregate and decrease percentage of the filler. Moreover, the bearing ratio of the sample also increase as the size of the aggregate and percentage of filler increase.

Keywords
Pavement, Sub-drainaged, Material, Permeability, Gradation, California Bearing Ratio

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/kn9LXAz8FQRw

Corresponding Author
andi sahrul hidayat

Institutions
a) Civil Engineering Departement, Faculty of Civil, Environmental and Geo Engineering , Sepuluh Nopember Institute of Technology , Surabaya, Indonesia
*andi_sahrul93[at]yahoo.com

Abstract
Some of the factors that cause premature damage to the flexible pavement system in Indonesia was allegedly caused by several things including the equation Equvalent axle load (EAL) that are not in accordance with the situation in Indonesia, where the majority of heavy vehicles carrying excess load (overloaded).The value of EAL which is based on the theory of permanent deformation in flexible pavement is highly dependent on the value of the modulus of elasticity (E) the structure of the pavement, vertical strain , and the deflection (d) right under the tire load and tire pressure (q) certain. By testing the value of a deflection in flexible pavement before and after a given pavement overlay in the suspect will affect the equation EAL. Pavement deflection testing was done at the time before and after a given flexible pavement overlay. Implementation of the testing was done using a Falling Weight Defflectometer (FWD) with a variety of loading. The data of test results that the value of the deflection (d), the modulus of elasticity (E) and vertical strain further analyzed to obtain equation form EAL. The analytical method used to obtain the form EAL equation is linear regression analysis and non linear. Based on the analysis results will be obtained form the new EAL equation. From the research analysis it is obtained that the power rank value for applying the maximum load limit regulation shall be as follows EAL= (p/8.16)^5.18 before overlay to the type single axle dual wheel (SADW) and EAL = (p/8.16)^4.63 after overlay to the type single axle dual wheel (SADW). As for the type tandem axle dual wheel (TADW) EAL =(p/13.76)^5.22 before overlay and EAL = (p/13.76)^4.55 after overlay.

Keywords
Equivalent Axle Load (EAL), overlay, overloaded, Falling Weight deflectometer (FWD)

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/H8WeGBZt4rgX

Corresponding Author
Widodo Widodo

Institutions
(a) Post-Graduate Student at Civil Enginering Diponegoro University
mail to : kakd02[at]student.undip.ac.id
kakd02[at]gmail.com
(b) Lecturer at Civil Engineering Diponegoro University

Abstract
The Semarang City Government plans to transfer the function of Terboyo Terminal to a terminal for heavy vehicles. As a result of this plan, public transportation that was served at the Terboyo Terminal is planned to be transferred to other terminals, one of them is the Penggaron Terminal. The Penggaron terminal which is a type B terminal is planned to receive the transfer of inter-city transportation within the province (AKDP) from the Terboyo Terminal. This study purpose were to: (1) determine the operational performance of Penggaron Terminal with the addition of AKDP transport from Terboyo Terminal, (2) to find out perceptions of service users on the services of Penggaron Terminal, (3) identify existing problems related to the transfer of some public transport from Terboyo Terminal, and (4) evaluating the operational and service of Penggaron Terminal due to the planned conversion of Terboyo Terminal to become a terminal for heavy vehicles. Data collection will be conducted by finding the supporting data and field surveys in the form of interview surveys, questionnaire surveys, vehicle exit surveys, passenger surveys and observations. The method of data analysis is done with: (1) analyzing the volume of vehicles that have moved to Penggaron Terminal, (2) analyzing terminal facilities variables, the volume of public transport and passengers, parking based on the data obtained, and (3) analyzing terminal services based on questionnaire data with Importance Performance Analysis (IPA) method. The survey will be conducted at the terminal operating hours and the location of the survey conducted at Penggaron Terminal. Survey of terminal facilities, interview surveys and questionnaires will be conducted on several respondents (passengers, public transport operators and entrepreneurs in terminal locations) as well as several related stakeholders.

Keywords
Penggaron Terminal, Transfer terminal function, Importance Performance Analysis

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/RufDawgVMAYe

Corresponding Author
Adib Lathiful Huda

Institutions
a) Student in Master of Civil Engineering, Diponegoro University
Jl. Prof. Sudharto, SH. Tembalang Semarang 50275
*deeb87[at]gmail.com

b) Lecturer in Master of Civil Engineering, Diponegoro University

Abstract
One of the causes of failure of a dam structure is the occurrence of seepage triggered by high pore water pressure that occurs in the body of the dam. Pore water pressure can cause the shear strength of the constituent material to decrease. In the Panohan Dam seepage occurs on the downstream slope of the dam which can disrupt the security level of the Panohan Dam. The purpose of this research is to evaluate the pore water pressure and seepage in the body of the Panohan Dam by using two methods namely analysis using numerical method (finite element method) in the planning stage and analysis based on the reading of piezometer and v-notch instrument data that installed on the body of Panohan Dam. The results of the two analyzes are compared to determine the condition of pore water pressure and seepage when planning stage is still in accordance with current conditions. Pore water pressure and seepage analysis was carried out on the cross A - A Panohan Dam which indicated seepage on the downstream slope of the dam using several variations of reservoir water level. The comparison results show that pore water pressure in numerical modeling is greater than the pore pressure value based on current piezometer readings. However, the seepage discharge of the v-notch readings on the dam body is greater than the seepage discharge that calculated by the numerical model. Based on the total amount of seepage discharge that occurs in the v-notch and measurements on several seepage spots on the dam body, Panohan dam is still safe from seepage problems that could disrupt the stability of the dam.

Keywords
Panohan Dam,Pore Water Pressure, Seepage

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/QHPNGbAjMe2r

Corresponding Author
Asep Yayat Nurhidayat

Institutions
Agency for the Assessment and Application of Technology, (BPPT) Jakarta

Abstract
Semarang City, one of the major cities in Indonesia, faces increasing urbanization and also an increase in private vehicle ownership that resulting in traffic congestion, increased accidents and also level of emission. The low use of public transport needs to be improved by moving private vehicle use to reduce the problem. Semarang has some public transportation, those are: trans semarang buses and C route transportation in the city. Public transportation performance can be determined from some indicators, such as: load factor, frequency, headway, and travel time. Collecting data has been done by direct survey and interviewing public transport passengers to find out the preferences and origin-destination of public transport passengers. The purpose of this study is to evaluate the performance of Semarang public transportation and analyze potential zones to Improve performance and use of public transportation. In addition, passenger origin-destination data can be used to analyze the integration of Semarang public transportation mode.

Keywords
private vehicle, public transportation, performance, origin destination

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/a3bFgrTpXd9w

Corresponding Author
Abdullah Luthfi

Institutions
a) Student in Master of Civil Engineering, Diponegoro University, Semarang, Indonesia
Jl. Prof. Sudharto, SH. Tembalang Semarang 50275
*abdullahluthfi1980[at]gmail.com
b) Lecturer of Graduate Program of Civil Engineering, Diponegoro University, Semarang, Indonesia

Abstract
The implementation of the Village Fund policy has brought a significant changes. The villages previously receiving a very limited budget managed centrally by the higher level of government have now been given a relatively bigger budget and authority for independent management. Most of the fund has been used for infrastructure activities accounting for 75,6% (Prakosa, 2017). The transparent use of Village Fund for physical development realized in the last few years (2015 to 2017), did not meet the quality of infrastructure in supporting facilities and infrastructure. This study was aimed to evaluate the implementation of village road infrastructure related to village funding. This research was conducted in the three villages (Gondang, Kertanegara and Karanggambas) of Purbalingga Regency. Data were obtained from surveys, observations, interviews and documentation. The data were analyzed using quantitative and qualitative methods in four steps namely data reduction, data presentation and conclusion drawing. The results of this study indicate that (1) The three villages have not fully implemented village planning in accordance with Permendagri No. 114 of 2014, (2) The road damage rate of Gondang village in 2015 was 6,627%, asphalt road in 2016 was 10,680%, asphalt road in 2017 was 19,274%, Karanggambas Village Road in 2015 was 16,938%, asphalt road in 2016 was 14,635%, asphalt road in 2017 was 1,019%, and Kertanegara Village Road road concrete rebates in 2016 was 5,972%, concrete rebate road in 2017 was 7,200%, asphalt road in 2017 was 5,604%, (3) The commitment and quality of human resources (village head, PTPKD, BPD, PPHP) had an effect on the success of the implementation of infrastructure planning and development, (4) There was a low the level of maintenance of infrastructure ( village road) by local community.

Keywords
Village Funds; Evaluation; Infrastructure; Village Road

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/TQXYV6CwbB2g

Corresponding Author
Mohd Rozaidi Ismail

Institutions
Politeknik Kota Bharu,
KM24, Kok Lanas,
16450 Ketereh, Kelantan.

Abstract
Study involves the study case of slope failure at FakultiKejuruteraanAlamBina (FKAB), UniversitiKebangsaan Malaysia located in Bangi, Selangor, Malaysia. Slope stability issues have become one of the main problems in construction industry due to the nature of topography and weather conditions in Malaysia. This dissertation examines the stability of the slope of FKAB and eventually to identify whether there have a failure or not using analysis software PLAXIS 2D. The three main objectives of this thesis are, to evaluate the in-situ soil properties at FKAB slope, to evaluate slope stability using PLAXIS 2D and to evaluate the stresses transferred to the piles of the FKAB building. The steps involve in solving the model of the slope were drawn, defined and assigned accordingly before the final analysis is being carried out in consequence to the methodology of the PLAXIS 2D 2008 software. There were 4 layers of soil all together. Layer l with soil parameters of 18 kN/m^3 of unit weight, 90 kPa of cohesion and 20% of angle of friction were assigned. Correspondingly for layer 4, the values of 15 kN/m^3 unit weight above the groundwater table and 18 kN/m^3 below groundwater table, 3 kPa of cohesion and 8% of angle of friction were assigned. In this study, we analyzed that there are some failure at the slope between borehole no 2 and no 3 with total displacement was 35mm. There were no failure occurred to the pile of FKAB building.

Keywords
Stability, Slope, Finite Element

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/x7UmKcudEBZG

Corresponding Author
Guntur Nugroho

Institutions
Department of Civil Engineering, Faculty of Engineering Universitas Muhammadiyah Yogyakarta.
guntur.nugroho[at]umy.ac.id

Abstract
Semi-precast column consists of the combination of cast-in-place concrete and segmental precast concrete. In semi-precast concrete column, difference in compressive strength exists between the cast-inplace and precast concrete. This aim of this research is to investigate the behaviour of column-fondation joint of semi-precast concrete column under axial and lateral cyclic loading. The behaviour of column-fondation joint of semi-precast concrete column has been evaluated by using ACI T1.1.2001. The result show that the column complies with acceptance criteria of ACI T1.1-01 at point c. Thereby column bataton can be used only at the moderate moment resisting frame system (SRPMM) of precast concrete structure, with maximum value of R (modifications response factor) is 6 (ACI T1.1-01).

Keywords
Semi-precast, Column, Cyclic Loading

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/e62Cba7gUjQX

Corresponding Author
M. Zudhy Irawan

Institutions
a) Department of Civil and Environmental Engineering, Universitas Gadjah Mada, Jl. Grafika No. 2 Kampus UGM, Yogyakarta 55281, Indonesia.
* zudhyirawan[at]ugm.ac.id

Abstract
The purpose of this paper is twofold. The first is to analyze the performance of TransJogja Bus: load factor and travel speed. The second is to identify the behavior of its passengers: passengers characteristics (age, gender, income, vehicle and driving license ownership), trip characteristic (trip purpose, origin destination point, access and egress mode to the bus stop, frequency of use), and the tolerable and expected waiting time. The data was obtained from the passenger boarding and alighting counting survey and on bus based interview survey involving 703 passengers. The survey was carried out from August to October 2017 on seventeen routes of TransJogja Bus. The results show that the load factor of TransJogja Bus only reaches 17.35%, consisting of 23.75% and 9% on the existing routes (1A to 4B) and the new routes (5A to 11) respectively. Meanwhile, the average bus journey speed is 20.35 km/h. Looking into the characteristics of passengers, TransJogja Bus passengers are dominated by women and young people aged less than 20 years old. This finding is linearly correlated to the trip purpose showing that most of the passengers use TransJogja Bus for a trip to school, to work, and for a recreational purpose by 39%, 18.5%, and 13.2% consecutively. Forty-three percent passengers choose to use TransJogja Bus because of the unavailability of private vehicle mode (captive users). The passengers also stated that the expected waiting time is 11 minutes and the tolerable waiting time is 22 minutes. Finally, this paper proposes some policies to increase the demand of TransJogja Bus by referring to our research findings.

Keywords
origin-destination matrix; load factor; trip purpose; access-egress mode; waiting time

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/P7DxEU4vMkFc

Corresponding Author
Alifia Az Zahra

Institutions
(a) Civil Engineering Departement, Faculty of Civil, Environmental and Geo Engineering , Sepuluh Nopember Institute of Technology , Surabaya, Indonesia
*cahya2772[at]gmail.com*
(b) Civil Engineering Departement, Faculty of Civil, Environmental and Geo Engineering , Sepuluh Nopember Institute of Technology , Surabaya, Indonesia

Abstract
In the document of East Java RTRW 2011-2031 show a planning of strategic areas called Golden Triangle Development, Tuban is one of the triangle in. Over this time, vehicles those across city always use urban road causing heavy vehicle mixed with local traffic. One of the solutions is the Construction of Tuban ring road (outer ring road). This final project will determine the alternative of Tuban ring road route to be more effective, and analyze the feasibility of the chosen alternative. Using an Analytical Hierarchy Process method to choose the route, from interview with stakeholders. The result was found that alternative 3 be the chosen route. Saving of vehicle operational cost of this ring road construction reach Rp 270.118.152.562 and saving of time value reach Rp 101.560.399.789 . All cost of the construction and land acquisition is Rp 799.629.618.714 . Then value of benefit cost ratio is 4,38 > 1 and amount of Net Present Value is Rp 2.705.937.413.332 > 0 . This study definitevely answer that construction of Tuban outer ring road with the chosen route is worthy for economic aspect.

Keywords
Tuban Outer Ringroad; Alternative Route; Analytical Hierarchy Procces; Time Value; Vehicle Operational Cost

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/vwyPMHBmGjhg

Corresponding Author
Harun Alrasyid

Institutions
Institut Teknologi Sepuluh Nopember

Abstract
At high-rise buildings, column has an important role to resist gravity and earthquake load. The utilization of high-strength concrete and high-strength steel rebar at high-rise buildings can reduce columns dimension at lower story. In this study, nonlinear finite-element analysis was carried out to model flexure behavior of high-strength reinforced concrete columns subjected to displacement-controlled monotonic loading and constant axial loading. There are two high-strength reinforced concrete column specimens with a 600x600x1800 mm column dimension that will be modeled using 3D finite-element analysis. The variables in this study are the axial loads. The axial load of 0.1Agfc and 0.33Agfc represents the low and high axial load on columns at high-rise buildings, respectively. The columns are designed with high-strength longitudinal reinforcement (fy=685 MPa), high-strength transverse reinforcement (fy=785MPa) and compressive strength of concrete of 70 MPa. Finite-element analysis is carried out with appropriate constitutive modeling of concrete and steel, material behavior parameters, geometric modeling, and mesh. The plasticity model was developed based on concrete damage plasticity models that can predict typical concrete behavior. The finite-element result showed that the prediction of the force-drift relationship curves are relative similar with the experimental results.

Keywords
concrete column, high-strength, non linear, finite-element analysis

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/fdyZH4QeKjTg

Corresponding Author
Willis Diana

Institutions
Universitas Muhammadiyah Yogyakarta

Abstract
Expansive soil is generally defined as any soil or rock material that exhibit volumetric deformation when their water content changes. They have a potential to swell and shrink under increasing and decreasing water content. This phenomenon can cause in damage to the infrastructure on it. The technique of lime columns, cement columns or lime-cement columns are an alternative method to improve and reduce the problems on this soil. The SiCC columns are columns made of a mixture of micro calcium and micro cylica used not only to stabilize the expansive soil but also to reinforce the soil. The SiCC was function as stabilize agent to soil surrounding the column that made the soil parameter changes. Hence, the soil parameters changes around the column should be determined. This study aims to determine the changes of soil parameter after the installation of SiCC Column. The analysis was done by finite element method using Abaqus 6.11. The soil was modeled with Drucker-Prager model. The soil parameter was predicted and analyzed until the deformation that occurred on finite element model was same with the physical laboratory model. The SiCC column model used in this study was T-shape column with diameter 15,24 cm in head diameter and column length were varied 70 cm and 50 cm, and loaded with 8 tons point load. The modeling results show that plate system with rigid pavement on expansive soils reinforced with SiCC column T-shape with length 50 cm have deformation value 10,76 mm. While the plate system with rigid pavement on expansive soil reinforced with SiCC column T-shape with a length of 70 cm have deformation value 7,04 mm. The results show that the longer pile produced the small deformation and the stiffer soil parameter.

Keywords
Finite element analysis, plate system, T-shape SiCC column

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/LYGNqKMA8j7C

Corresponding Author
Tyas Herlintang Prihatmanti

Institutions
(a) Student of Universitas Sebelas Maret Surakarta, Indonesia. Jl. Ir. Sutami No.36 A, Pucangsawit, Jebres, Kota Surakarta, Jawa Tengah 57126
Email : tyasherlintangp[at]gamail.com

(b) Lecturer of Universitas Sebelas Maret Surakarta, Indonesia. Jl. Ir. Sutami No.36 A, Pucangsawit, Jebres, Kota Surakarta, Jawa Tengah 57126

Abstract
One of the paramount criterion in designing a building is safety, including fire safety. Bank Jateng Pecangaan Jepara is a new building that was designed with limited consideration of fire safety, therefore requires some fire safety improvement. This paper evaluates and proposes fire safety retrofitting to the design of the building. At the first step, fire risk assessment analysis was carried out by using National Fire Protection Association (NFPA) standard. Some parameters would be used to measure the safety level such as the use of active protection systems which include fire alarm (NFPA 72), sprinkler (NFPA 13), portable fire extinguisher (NFPA 10), and hydrant (NFPA 10). Fire risk level is influenced by the initial point of the fire and its propagation. Therefore, at the second stage, a computer based simulation was performed to obtain an appropriate approach in reviewing the existing protection system. A 3D BIM model was built based on shop drawing and specification of the Building by means of Revit software. ProSym software is used to convert DWG BIM file into Fire Dynamics Simulator-s file. The parameters used include building geometry data, material specifications, ventilation and openings, initial of fire and time of evacuation. Ta the final stage, some scenarios of active fire protection were proposed and evaluated to measure its efficacy. It is expected from this ongoing research that fire safety will be increased and some insights on how prevent fire hazard will be gained.

Keywords
Building Information Modeling, Fire Protection System, Fire Risk Assignment, Fire Dynamics Simulator

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/7UzFxBwth4uy

Corresponding Author
Winda Nur Oktaviani

Institutions
a) Structural Engineering, Department of Civil Engineering, Sepuluh Nopember Institute of Technology
Jalan Raya ITS, Surabaya 60111, Indonesia
*oktavwin14[at]gmail.com

Abstract
Concrete is a popular material used in constructions such as building, bridge, harbor, etc. The microstructural state of concrete shows that the material has a lot of pores which allows the aggressive substances in the marine environment, such as chloride, infiltrate into the concrete and cause corrosion in the reinforcing steel. If cracks occur on reinforced concrete beams due to the overstress in concrete, it will increase the infiltration rate of aggressive substances and accelerate the corrosion. In the long term, it can reduce the load capacity, the resilience of the structure and lead to progressive damage even spalling on the concrete cover. This research focused on investigating the flexural capacity of the reinforced concrete beam. The beams were pre-cracked to produce cracks and the accelerated corrosion test was used to initiate the corrosion process. The accelerated corrosion test used a constant current of 0.1 A with 3.5% salt water to simulate the marine environment. Finally, the changes of flexural capacity were evaluated in this study to obtain the effect of marine exposure to the flexural behavior of the structure. From the results show that beam flexural capacity decreased by 23% with a corrosion rate of 14%.

Keywords
Concrete; Corrosion; Flexural Capacity; Marine Enviroment

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/LEzjuPJ67YK3

Corresponding Author
Sintya Maghfira Ismawati

Institutions
(a) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia.
*sintyamaghfira[at]gmail.com
(b) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia.

Abstract
Kedurus River serves to drain flood discharge originating from the upper reaches of Gresik City and empties into Kali Mas Surabaya. In the rainy season, the West Surabaya area is often flooded due to the Kedurus River runoff. This study aims to analysis and simulate flooding with numerical methods, so flood prone areas due to overflowing Kedurus River can obtained. Flood simulation was carried out with the HEC-RAS software that combines 1-dimensional and 2-dimensional flow. In flood simulation, Nakayasu Synthetic Unit Hydrograph is used as the boundary of upstream conditions and the Stage Hydrograph as the downstream condition boundary. To create a river model, DEM data and hydrograph-data are used with certain return periods. The results of the analysis and simulation obtained depth, speed, duration and extent of flooding so that it can be obtained flood risk map of West Surabaya area. This flood risk map can be used for planning control and early warning.

Keywords
Flood; HEC-RAS 2D; Kedurus River; Risk Map

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/W6TbNQZ3C8pc

Corresponding Author
Hendri Hermawan

Institutions
Institut Teknologi Sepuluh Nopember

Abstract
At the service stage of water pump stations, the evaluation of the pump vibration takes an important consideration. Fluid-Soil-Structure Interaction is an effective analysis method for prediction of vibration and avoidance of resonance phenomena. At large-sized vertical pumps, stiffness of the foundation structure has a considerable effect on the natural frequencies since the unballance of the system were triggered by it. This paper review interactions which holds effects on the vibration, such as building rigidity, fluids flow and the pump-s structure itself into complex dynamic coupled analysis

Keywords
vibration, interaction, rigidity, fluid, soil

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/uYZ9eLrJXvMc

Corresponding Author
Muhammad Ibnu Syamsi

Institutions
a) Department of Civil Engineering, National Central University, Taiwan
b) Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta
*cywang[at]cc.ncu.edu.tw

Abstract
The importance of Structural Health Monitoring (SHM) is one of the keys to the sustainability of the structural system to be able to continue to provide services in accordance to its functions. The SHM process involves observation over the time to measure structural responses periodically. The aim of this study is to derive the governing equations to calculate the dynamic response of the structure including its natural and essential boundary conditions through the Hamilton Principle which involves kinetic and total potential energy of the system. Windmill structure as the object of this research is located in the middle of the sea. This offshore structure is idealized as a cantilever beam with lumped mass at the free end to represent the large fan installed there. Both waves and wind loads are considered in deriving the dynamics formulation. Deflection and external load functions inside the fourth order differential equation of the beam vibration are assumed to be known using the linear independent characteristics of polynomials. In order to establish the dynamics deflection response and the force acting on the structure, the strain data at different positions obtained from measurement of the structure are provided. Finally, matrix inverse formulation to estimate the actual force can be formed. By estimating the actual loads using this back-calculation, the structural response in various position at any time along the height of the system could be predict through forward analysis.

Keywords
structural health monitoring, back-calculation, dynamics, force, deflection

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/UtjebKmYu2HM

Corresponding Author
Hakas Prayuda

Institutions
(a) Department of Civil Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta.
Tamantirto, Kasihan, Bantul, Yogyakarta, Indonesia, 55183.
Email: hakasprayuda[at]umy.ac.id

Abstract
This study discusses the results of fresh properties and compressive strength of self-compacting concrete using ingredients added Red Brick powder as a fine aggregate substitute. The results of the study were compared with the properties of fresh properties and compressive strength with ingredients added by rice husk ash which is also a fine aggregate substitute. In addition, it was also examined the initial compressive strength of each of these variations in order to accelerate the completion time of construction projects using self-compacting concrete. Fresh properties testing is carried out in the form of V-Funnel, Flow Table, J-Ring and L-Box where all specimens produce quite varied flow rates. Compressive strength was carried out at ages 3, 7 14 and 28 days with cylindrical specimens with a diameter of 150 mm and a height of 300 mm. the variation of fine aggregate substitutes used is 20%, 40%, and 60%. From the results of the compressive strength, it can be concluded that the added material is categorized as self-compacting concrete with high initial compressive strength, while at 28 days the compressive strength test results are categorized as high strength self-compacting concrete.

Keywords
Self Compacting Concrete, Fresh Properties, Rice Husk Ash, Red Brick

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/ygae7Vn9bWwG