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Published by Universitas Brawijaya

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Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

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Articles 10 Documents

Search results for , issue "Vol 12, No 1 (2018)" : 10 Documents clear

Perbaikan Tanah Dasar Jalan Tol Semarang – Demak Menggunakan Bahan Aditif Dan Perkuatan Kolom Stabilisasi Anindita Dwi Anggraini; Ahmad Rifa’i; Fikri Faris
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

In Semarang there is often a flood of sea water that swamp the road. This happens because the ground is lower than the water level, load-carrying capacity is deficient. Following up on this, a new road network is needed as a toll road. To accomplish the problem, it is necessary to increase the load-carrying capacity by improve the subgrade on the toll road using additive and strengthen the stabilization column. Additives used in the form of additives made of inorganic materials containing compounds of calciumchloriddihydrat with pH of 8.24 which has ion bonding energy is greater than the metal material on the surface of the soil grains. The general composition consists of carbon elements 72.78%, hydrogen 21.11%, and nitrogen 1.36%. The research was conducted on soil mix, additive material by comparison 1 gram of additive, 1 liter of water and variation of cement content like 4%, 5%, 6%, 7%. To get the optimum mix for soil improvement. Then numerical analysis by using Plaxis Software v.8.6 with variation of soil thickness and column length stabilization. Test results show that the soil is high-plasticity clay. The soil stabilization was eligible for soil compressive strength testing for layers of soil composite cement foundation of 24 kg / cm2. Soil compressive strength testing of soil stabilization is 2,47 kg/cm 2 with 7% cement and addictive. Based on numerical analysis with plaxis v 8.6 software, the deformation value in the model with 5 m thick soil stabilization and 50 m stabilization column length has met the embankment degression limit according to the PU guideline that is 20 mm for the 1st class road. For the value of road stability safety factor, eligible value 1.4.

Pengaruh Penerapan Green Retrofit Terhadap Life Cycle Cost Pada Bangunan Gedung Aulia Rahmawati; Wisnumurti Wisnumurti; Agung Murti Nugroho
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

This study aims to investigate one of the benefits of retrofitting an existing educational building in its relation to the building’s life-cycle cost. Choosing educational building as a target of green retrofit project and as an object of study for its relevance as an important part of nationwide green project is considered timely, given the fact that there hasn’t been any retrofit project in Indonesia that targets educational building despite its necessity to create sustainable environmental management of educational facilities. The improvement made to the building by the project was measured using GREENSHIP Existing Building (EB), which is thelegitimate standard of assessment for the level of energy efficiency and conservation of buildings in Indonesia. Having been retrofitted, the building was rated Silver based on GREENSHIP EB rating system, and it wasa substantial progress compared to its previously non-rated status. The project had resulted in 0.45% decrease ofthe building’s total life-cycle cost. Furthermore, it was found that green retrofitting that was particularly oriented towards Energy Efficiency and Conservation, Water Conservation as well as Indoor Health and Comfort categories could cause greater life-cycle cost reduction than retrofitting that was undertaken for the whole categories prescribed in GREENSHIP EB.

Analisis Kuat Tekan Beton Mutu Tinggi Dengan Bahan Tambah Superplastisizer Dan Limbah Las Karbit Prayuda, Hakas; Pujianto, AsÃ¢Â€Â™at
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

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This research will discuss about the compressive strength of concrete by using superplastisizer as an addictive substance and waste of carbide weld as the admixture material of cement replacement. Through this research is expected to know the right composition to produce a concrete formula with high quality by utilizing the existing local waste dan superplastisizer (Viscocrete-10). In this study made a sample of concrete cylinders measuring 15 cm diameter with a height of 30 cm totaling 63 specimens with 7 variations with each variation made as many as 9 specimens. The compressive strength test was performed at age 7, 14 and 28 days. Through this research, the result of flowability, compressive strength and elastic modulus of each test object variation.

Kinerja Efisiensi Energi Terhadap Manajemen Biaya Operasional Gedung Dano Quinta Revana; Wisnumurti Wisnumurti; Agung Murti Nugroho
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

The concept of Green Building is one of the efforts to reduce the effects of global warming through developmental aspects. Excessive energy consumption becomes an issue of global warming and waste of operational cost in the building so that this research will conduct an assessment using GREENSHIP and SNI parameters in Building E Faculty of Administration Brawijaya University expected to know the level of "green" in energy efficiency criteria. Energy Consumption Intensity in this building is 60,65 kWH/ m2/ year. Some rooms have the use of electric power exceeding the maximum SNI power, so there needs to be a reduction of wattage bulbs and lamp replacements with LED lights that can save power 2.039,04 kWH and saving the operational cost Rp. 1.935.218,88 every month

Preloaded Reinforced Concrete Beam Stress Block Parameters : A Preliminary Approach Fachreza Akbar; Ari Wibowo; Wisnumurti Wisnumurti
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Reinforced concrete beam will have tendency to deteriorated after receiving a certain degree of load by leaving plastic strain. Although Many study of plastic strain behavior were performed to establish the behavior of concrete under cylic load such as in seismic activity or under earthquake load there are less information of preloaded concrete stress block has been reported. In this study, the stress block parameter of α re and γ re have been defined and derived from empirical model of the early and latest study of concrete behaviour under repeated loading. The result shows match behavior of the parameters value both in every unloading strain increments or concrete reloading increments with particular unloading strain. The result α re are also has been plotted and compared with the previous proposed α

Pengaruh Kualitas Pelayanan Angkutan Kota Terhadap Kepuasan Dan Loyalitas Penumpang Di Kota Kupang Oktovianus Edvict Semiun
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

This study is aimed to evaluate the quality of urban transportation service and its impact on passenger satisfaction and loyalty in Kupang city, NTT. Data collection was done by distributing questionnaires to 130 passengers chosen by applying random sampling technique. The survey results were analyzed by IPA method and CSI. Whereas, the relationship between importance, performance and passenger loyalty were analyzed using PLS. The results showed that the public transportation service has not reached satisfactory category with the value of CSI at 57,21% (very poor). The results of the analysis of PLS model revealed that both importance and performance positively affected on passenger loyalty, whereas importance negatively affected the performance.

Optimalisasi Biaya Pelaksanaan Konstruksi Jalan Dengan Metode Logika FUZZY FIS Takagi-Sugeno Pada Proyek Jalan Trans Kalimantan Provinsi Kalimantan Utara Febryan Nugraha; Alwafi Pujiraharjo; Ruslin Anwar
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

National development requires infrastructure as one of the driving wheel of economic growth. One of the main parts of infrastructure development is the construction of highways. Road construction requires many factors to consider before the development process begins, such as factors of materials, equipment, labor, time and cost. In practice, accurate calculations are needed in determining the required amount of each factor, since a slight mistake can cause losses on the part of the contractor that impact the low quality of the highway. In this research used fuzzy logic (fuzzy logic) as decision maker. Because the workings of fuzzy logic represent the way of human thinking that appears from the outside and contained in the form of words. Fuzzy logic is a logic that has the value of vagueness or fuzzyness between right and wrong. In fuzzy logic theory a value can be true or false at the same time. Fuzzy itself in the language is interpreted as or vague.Fuzzy logic has degrees of membership in the vulnerable 0 to 1. Fuzzy logic used as a pointer to the extent to which the value is true and the extent to which the value is wrong, in contrast to classical logic, a value has only two the possibility of being a member of the set or not. Fuzzy logic can also be used as an alternative decision-making as an easy modern control system. The fuzzy logic used is FIS Takagi-Sugeno because of its more efficient computing, works well for linear techniques, works well for adaptive optimization and ensures continuity of results. In this research will also be developed an application that aims to assist users in analyzing and forecasting the needs of what is required in making a highway construction. Using the Takagi_Sugeno FIS based FIS user interface generated in this research, the resulting performance using Fuzzy Logic is better than the manual calculation, it can be seen from the total cost generated from the calculation method. For calculations using Fuzzy Logic has a total cost of Rp.52.950.009.851 while the results of manual calculations of Rp. 54.840.926.051.

Penilaian Risiko Keselamatan Dan Kesehatan Kerja Dengan Menggunakan Metode Hirarc Dan Safety Policy Eko Wahyu Abryandoko
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Occupational Safety and Health is an important part of the company, especially in construction work, because the main factor for a company to achieve the desired goal is employee productivity, supported by a sense of security and comfort.. This study has developed this procedure based on observations with reference to the OHSAS 18001: 2007 standard certification of HIRARC method of applying SMK3 based on HIRARC preparation on job implementation. After the risk analysis is done based on HIRADC and Risk of Risk then there should be risk control. Efforts made to control by considering the hierarchy of elimination, substitution, technical control, administrative and equipment supply K3 namely by adjusting the completion time of the TJBTB Main Office Construction project

Rainwater Harvesting as Alternative Source Of Sanitation Water In Indonesian Urban Area (Case Study: Bandar Lampung City) Gatot Eko Susilo
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

This paper aims to investigate supporting capacity of rainwater harvesting (RWH) to meet sanitation water needs in the area of Bandar Lampung. Simulation involving rainfall data, house roof data, house dwelling data, and data of domestic water needs per capita is carried out to find optimum supporting capacity of RWH. The simulations show that optimum storage for the RWH in the area of study is 90 m REKAYASA SIPIL / Volume 12, No.1 – 2018 ISSN 1978 - 5658 3 . On this design, supporting capacity of RWH for year 2012, 2013, and 2014 is 71.2%, 99.2%, and 99.7%, respectively. Main advantage of RWH is the preservation of groundwater. Others are the reduction of surface drainage discharge and the reduction of electricity consumption for taking groundwater

Evaluasi Tegangan-Regangan Dengan Pemodelan Silinder Beton Ming Narto Wijaya
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Compressive strength is one of the main parameters in the analysis of concrete behavior. In general, the compressive strength of the concrete will be tested in the laboratory using the Uniaxial Compression Test tool. However, it requires a lot of energy and cost and a long time. For that we need an approach with a simulation of numerical methods that is with finite element method using ABAQUS aids program. Based on the results of numerical analysis, it is concluded that the modeling of concrete elements using ABAQUS element finite aids program can be done by creating 3D solid model, using C3D8R element type and discrete rigid plate as pressure load suppliers. Furthermore, plastic material input is used in the form of Concrete Damaged Plasticity (CDP). While the stress-strain distribution in concrete modeling using ABAQUS auxiliary program shows the distribution according to laboratory test result, especially the elasticity modulus seen from the relationship curve of stress-strain strain. However, there is a difference in the maximum compressive strength achieved between the two tests. Therefore, further analysis is needed to know the properties of the concrete material used in the analysis, and the damage behavior that will influence the input of the material being analyzed.

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