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Jurnal Teknik Sipil Unika Soegijapranata : G-SMART (Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air, Transfortasi)
Published by Universitas Katolik Soegijapranata
ISSN : 26205297     EISSN : 26205297     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal G - SMART : Jurnal Teknik Sipil Unika Soegijapranata yang meliputi Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air dan Transportasi.
Arjuna Subject : -
Articles 96 Documents
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Analisis Terhadap Kualitas Air Sungai Kaligarang sebagai Sumber Air Baku PDAM Natasha Cindy Kardia Etnovanese; Tiyas Matilda Aprillia; Djoko Suwarno; Budi Setiyadi
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1772

Abstract

The usage of water should be wisely. Water which most used by the community is river water. Kaligarang river water is used for irrigation, to wash the clothes, cleanse sewage. and as the basic source of PDAM Tirta Moedal Semarang. This observation method is literature study, collect data by interview and take the water sample, and analysis the water quality. The observation of water quality is done to search for the cause of Kaligarang river pollution so that we know how to neutralize the river basic source in PDAM Tirta Moedal Semarang. The observation is done in the draught season because at this time the content of pollution is higher. The water sample is taken from the river junction, back of PDAM TM intake, and at the estuary. The quality criteria of water is based on PPRI number 82, 2001. The result shows that water at every spot has parameter which higher. Has high value parameter which is more than the limitation value which is different and the pollutant is much in the muara. The penetrate used by PDAM Tirta Moedal is chlorin and tawas, and the usage doesn not influent the cost of production nor distribution but it causes the production process stop, so that the people should have water containers at their homes.
Pengaruh Kuat Geser Matos dan Semen Terhadap Tanah Ekspansif Nikodemus Budi Prayitno; Daniel Hartanto; Djoko Suwarno
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1635

Abstract

The development of development in Indonesia is very advanced and requires extensive land to build. A lot of development has been carried out to increase the pace of development but has faced several obstacles. The constraints faced are often land conditions that do not support. One of the soil conditions is expansive soil. This expansive soil condition must be corrected so as not to damage the building built on the land. One way to improve this is to add additional ingredients to improve the expansive soil. The added ingredients used are matos and cement.This research is also useful to determine expansive soil shear strength with the addition of matos and cement. The method of mixing matos is using cement and water. If the matos are not mixed with cement, the results obtained cannot be maximized. When it is mixed homogeneously the expansive soil experiences better mixing than without the addition of matos and cement. Shear strength also increased significantly when mixed with matos and cement.
Evaluasi Kinerja Alat Pemberi Isyarat Lalu Lintas (APILL) Menggunakan Metode Manual Kapasitas Jalan Indonesia 1997 Dan Webster Marissa Octaviany Girsang; Rudatin Ruktiningsih
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1875

Abstract

The development of transportation occurs along with the development of residents in an area. The impact caused a buildup of vehicles on the highway. Transportation growth is linearly related to the Traffic Light Signaling Tool (APILL). Giving a Traffic Giver Tool is one way to regulate traffic. The methods that can be used for the duration of the APILL include the 1997 Indonesian Road Capacity Manual Method and Webster. The location of the study was in the Simpang Statue area of Pangeran Diponegoro and Abdulrahman Saleh. The webster method is calculated based on vehicles that come randomly. The calculation of the webster method is used to calculate the average delay of a vehicle when approaching an intersection where this delay occurs due to the large number of vehicles entering compared to the vehicle coming out of the intersection. the use of this webser method aims to be able to produce the optimum cycle time at each intersection. The Indonesian Road Capacity Manual Method (MKJI 1997) is a manual for road traffic calculations but cannot be used to analyze networks. This intersection obtains a degree of saturation average of ≥ 0.75, meaning that this intersection experiences a buildup of vehicles or congestion. The capacity and volume of vehicles in each intersection are inversely proportional. The intersection capacity can only accommodate around 2500 vehicles / hour but when on the field there are 7200 vehicles / hour. This makes APILL not work in each intersection. Simpang Statue of Pangeran Diponegoro and Abdulrahman Saleh is included in the F service (low speed blocked flow). The duration of the APILL time is not the same every day because the vehicle volume changes in each hour so that it is designed several plan APILL in the intersection. To overcome this kind of incident can be assisted by officers from the Police or the Semarang City Transportation Agency. Until now the APILL method still uses the Indonesian Road Capacity Manual 1997. Compared to the Webster method, the data needed is very minimal or incomplete. The results of the APILL time duration obtained using the 1997 Indonesia Jalan Capacity Manual method differ from the duration of time in the field and generally the results of calculations the duration of time obtained from this method added 10% of the calculation results and applied in the field.
Kajian Kuat Lentur Balok Beton Bertulang Komposit Dika Ananditya; Adri Praditya; David Widianto; Hermawan .
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1607

Abstract

Demand for improvement of age concrete performance, durability and assessment of existing condition building with reinforced concrete structure have tendency to increase. The selection of appropriate methods taking into the economic aspects provides a rebuilt or retrofit option. Efforts that can be done in order to retrofit the beam structure, can be done in various ways, one of which is the use of chemical anchor. Repair using chemical anchor involves two elements, namely chemical HILTI HIT-RE 500 V3 and anchor. Both elements combine the existing beam with a new block to be a single composite beam. The use of HILTI HIT-RE 500 V3 can guarantee the monolithic nature of the structure components and transfer the voltage even though there is little cracking. The use of anchorage in concrete can increase the load that can be supported by 5.87% -8.91% and will increase with the length of the burial.This study aims to study the strength of reinforced concrete bone beam that is improved by chemical anchor method. The scope used is a beam-shaped specimen measuring 15 cm x 15 cm x 60 cm, monolith beam 15 cm x 30 cm x 60 cm, anchor steel bone diameter 13 mm, 24.9 MPa concrete (K-300) and chemical anchor HILTI HIT-RE 500 V3.The test results show that concrete composite increases the maximum acceptable load three times between 30 cm thick composite beam and 15 cm thick single beam. The maximum load of 30 cm thick monolith beam has increased by 1,5 times compared to 30 cm thick composite beam. The average maximum load that can be supported by a single 15 cm thick beam is 6.515 kg, 30 cm thick concrete monoliths 12.800 kg, and 30 cm thick concrete block is 19.267 kg.
Kajian Pengaruh Penggunaan Zat Admixture ” X”, Fiber Dan Semen Grouting Terhadap Kuat Tekan Dan Retak Beton Pada Beton Tanpa Perawatan Aland Surya Nugroho; Theovilla Arry
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1784

Abstract

At present, there are many damages to concrete structures in buildings that have build. One such damage is the appearance of cracks. Cracks in concrete are caused by many factors, including loads that exceed limits, temperature, components of the constituent material, the process of making concrete and time.This research was conducted with the aim of studying the effect of the use of admixture "x", fiber and cement grouting on the compressive strength and cracking of concrete in untreated concrete. The specimens in this study are in the form of a concrete slab with a size of 1 m × 1 m with a thickness of 6 cm, cylinder size Ø 15 cm with a height of 30 cm, concrete quality plan K 250 (20,75 MPa), viscocrete, fiber type monofilament polypropylene, and cement grouting.The results of this study indicate that the addition of fiber can minimize the appearance of cracks in concrete. In addition, it also increases the compressive strength of concrete, namely K 295 (24,5 MPa). The use of viscocrete actually causes the most cracks if not cured, but has the highest strength, namely K 340 (28,3 MPa).
Implementasi Konstruksi Berkelanjutan Pada Penanganan Bangunan Pasca Kebakaran Dengan Fiber Reinforced Polymer (FRP) Dan Jacketing Stefanus Erik Susanto; Ivan Hidayat; Hermawan .; David Widianto; Albertus Kriswandhono
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1688

Abstract

Prinsip utama dalam keberlanjutan adalah tercapainya perbaikan kualitas hidup manusia melalui perbaikan sosial, ekonomi dan lingkungan. Prinsip tersebut dapat diimplementasikan pada berbagai macam bangunan. Salah satunya adalah Pasar ’X’ di Semarang yang mempunyai nilai cagar budaya. Implementasi tersebut dapat diperlihatkan pada penggunaan material dalam penanganan bangunan cagar budaya pasca kebakaran. Bangunan pasca kebakaran yang dialami oleh Pasar ‘X’ merupakan pusat perekonomian bagi masyarakat di Semarang. Pada sisi yang lain, ada nilai kecagarbudayaan yang harus dideliver di dalam perbaikan bangunan pasca kebakaran sehingga dapat terjaga keberlanjutannya namun tetap memenuhi kaidah strukturnya. Oleh karena itu, diperlukan pemodelan untuk mencapai tujuan penelitian ini melalui perbandingan perbaikan struktur pasca kebakaran. Komponen struktur yang diteliti adalah kolom. Standar yang digunakan dalam memodelkan kedua macam perbaikan tersebut adalah ACI 440.2R-08 untuk FRP dan IS 15988 (2013) untuk concrete jacketing. Data yang diperlukan untuk memodelkan kedua macam perbaikan tersebut adalah hasil uji kuat tekan beton yang diperoleh dengan core drill dan uji kuat tarik baja tulangan dari kondisi eksisting. Selanjutnya, dimodelkan dengan menggunakan bantuan software ETABS. Hasil penelitian menunjukkan bahwa diperlukan FRP sebanyak 6 lapis tipe FRC 530 untuk kolom podium dan 3 lapis tipe FRC 530 untuk kolom tinggi terhadap kapasitas beban aksial nominal dan kapasitas momen nominal. Perbaikan dengan concrete jacketing diperlukan beton setebal 10 cm dengan tulangan utama 8 D16 mm serta dengan tulangan sengkang Æ8-75 mm.
Pengaruh Penggunaan Bahan Admixture “XY” Pada Beton dengan Menggunakan Pasir Mutu Rendah Kharisma Indra Saputra; Yoga Ariesto Pratama
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1858

Abstract

Concrete is a material used for buildings construction such as buildings tower, bridges, etc Concrete consists of a mixture of fine aggregate, coarse aggregate and water. The price of material is increasingly expensive because the material limitations are not comparable to needs.This study uses data collection techniques with interviews, documentation, literature studies and direct observation and sampling at the site. The research of type of sand, sludge content testing and compressive strength testing were carried out in the SOEGIJAPRANATA Faculty of Engineering Faculty of Engineering's Civil Engineering Study Program laboratory. The purpose of this study was to determine the compressive strength of concrete with low quality sand plus admixture "XY", knowing the exact dosage of "XY" admixture material so that the concrete with low quality sand had the same or more compressive strength for concrete using good quality sand.The conclusion of this study is that low quality sand concrete added with admixture "XY" produces a compressive strength of 10% greater than the compressive strength of concrete with good quality sand without using admixture "XY". However, the use of the "XY" admixture material is not recommended or depends on consumers who want to use because the price is not economical. Therefore it is necessary to conduct further research using other admixture materials to increase the compressive strength of the concrete with this low quality sand.
Pengaruh Penambahan Semen Tipe I Terhadap Nilai Kuat Geser Tanah Krisna Dwiyana Soehendro; Roma Kusuma; Daniel Hartanto
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1634

Abstract

The type of soil that is quite often found in Semarang City is expansive soil. Expansive soil is some types of clay soil which has high value of shrinkage and plasticity. One of the common problem from this charateristic is found at Jalan Taman Verbena, Kelurahan Sadeng, Kecamatan Gunungpati, Semarang. The problem that usually occur are broken walls and cracks, and also bumpy floors. One of the solution that the writer give to increase the value of expansive soil shear strength is to conduct research on adding cement with different percentage as the additiver. In this research, the writer use type I cement with the percentage of 0%, 5%, 10%, 15%, and 20% from the weight of dry soil. The reasearch that the writer do are mineralogi test, index properties test, atterberg limit test, sieve analysis test, standard proctor test, swelling test and direct shear test. Based on the direct shear test, the best value of cohesion was obtained at 10% of cement adding on the soil sample with 28 days of curing with the value 3,75 kg/cm2, while the best value of shear angle was obtained at 20% of cement adding with 28 days of curing with the value 88,00°. The conclusion that the writer can be conclude is cement has good effect in increasing the value of expansive soil shear strength.
Estimasi Emisi CO2 Pada Pekerjaan Perakitan Baja Tulangan dengan Ruang Lingkup Gate To Install Arvin Philander Cahyono; Liem Kresna Mulia; - Hermawan; Endro Giyanto
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1799

Abstract

Reinforcing steel is one of the major construction materials which produces significant CO2 emission. In addition, reinforcing steel is also the main material in various construction Project type. Type of construction project which uses large amounts of reinforcing steel is high-rise buildings. The growth of high-rise buildings almost all over the world tend to increase. The tendency can be shown in Indonesia which has a total of 621 high-rise buildings. With this amount, Indonesia is one of 10 countries which have a significant tendency in the growth of high-rise buildings. Furthermore, the large and small of CO2 emission of reinforcing steel is indicated sourced from the supply chain as well. Hereafter, the reinforcing steel on the site needs some heavy equipment such as bar bending, bar cutter and transportation using tower cranes. The contribution of CO2 emission from the supply chain and install on site becomes important as it contributes in shaping cycles within the construction project. The existence of such cycles can be shown by the source and the amount of CO2 emission produced by each step. By using LCA, the source and amount of CO2 emission from each step can be found. The scope developed in this research is cradle to install. The result of the research shows that the size of CO2 emission in the cradle section range from 99 kg.CO2/m3-171 kg.CO2/m3. Furthermore, the size of CO2 emission in the supply chain section ranges from 10 kg.CO2 / m3-21 kg.CO2/m3. The size of CO2 emission ranges between 1 kg.CO2/m3-5 kg.CO2/m3. The result of the research is that reinforcing steel cradle is the biggest source of CO2 emission. The CO2 emission on the site is the smallest compared to the cradle and supply chain, but they cannot be ignored because they also contribute to and make a big determinant of CO2 emission in the construction project.
Identifikasi Besar Biaya Sumber Emisi CO¬2 Pekerjaan Pengecoran Struktur Beton Bertulang Pada Ruang Lingkup Gate To Gate Cindy Regan Handoyo; Devi Kumala Birgitta; Hermawan .; Budi Setiyadi
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1689

Abstract

Emisi carbon dioxide (CO2) merupakan salah satu gas rumah kaca yang yang dihasilkan oleh industri konstruksi. Industri kontruksi berperan sebagai kontributor utama dari manufaktur, rantai pasok konstruksi, dan pelaksanaan konstruksi. Persentase emisi CO2 dari manufaktur material konstruksi berkisar antara 93,7%-98,6%, dari rantai pasok konstruksi berkisar antara 0,1%-5,2%. Sementara itu, salah satu persentase emisi CO2 pada pelaksanaan pekerjaan konstruksi adalah pekerjaan pengecoran struktur beton bertulang. Besar emisi CO2 dari pekerjaan tersebut berkisar antara 0,03%-1,2%. Penelitian ini bertujuan untuk mengidentifikasi besarnya biaya akibat emisi CO2 yang ditimbulkan pada pekerjaan tersebut. Besar emisi CO2 yang diindikasikan turut menentukan besarnya biaya. Penelitian ini bertujuan untuk mengidentifikasi sumber emisi CO2 terhadap besaran biaya pada pekerjaan struktur beton bertulang. Ruang lingkup penelitian ini adalah gate to gate yaitu pada pekerjaan pengecoran struktur beton bertulang bangunan tingkat tinggi dengan menggunakan tower crane dan concrete pump. Tahapan yang digunakan dalam penelitian ini terdiri dari pemodelan aktivitas pekerjaan dengan CYCLONE. Selanjutnya, diestmasi besarnya emisi CO2 dengan menggunakan formula dari penelitian yang telah dilaksanakan sebelumnya. Kedua tahapan tersebut digunakan sebagai dasar untuk mengestimasi besarnya biaya yang diindikasikan sebagai sumber emisi CO2. Hasil penelitian ini menunjukkan bahwa pelaksanaan pekerjaan pengecoran menggunakan tower crane, diperoleh estimasi emisi CO2 ± 239,87 kg.CO2 dengan besar biaya Rp. 241.711,00/hari, sedangkan untuk concrete pump sebesar ± 84,56 kg.CO2 dengan besar biaya Rp. 1.560.000/hari/tangki.

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