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Prokons: Jurnal Teknik Sipil
Published by Politeknik Negeri Malang
ISSN : 19781784     EISSN : 27148815     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Materials Science & Nanotechnology
Jurnal Teknik Sipil (PROKONS), Terbit dua kali dalam setahun. PROKONS menerbitkan artikel penelitian yaitu penelitian asli teoretis dan eksperimental yang mengeksplorasi atau mengeksploitasi ide-ide dan teknik baru di empat bidang utama: teknik struktural, geomekanik, manajemen proyek konstruksi dan teknik transportasi. Tujuan jurnal ini adalah untuk memajukan ilmu pengetahuan yang berkaitan dengan teknik sipil dan berfokus pada bangunan, infrastruktur, sistem jembatan serta pemasangannya atau konstruksi.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 8 Documents
 1 
Search results for , issue "Vol 15, No 1 (2021): Februari 2021" : 8 Documents clear
IMPLEMENTASI FUZZY AHP DAN TOPSIS PADA PEMILIHAN METODE PEKERJAAN PERKERASAN KAKU Agung Budi Broto; Ester Maharani
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.280

Abstract

Abstract Rigid Pavement is the main work in toll road construction. In the implementation of rigid pavement, there are several alternatives, namely mechanical and conventional, where each alternative has advantages and disadvantages. This study aims to determine the selection of appropriate work methods on the Kunciran - Cengkareng Toll Road Project. Many multi-criteria must be considered, the consideration of decision making can be done by using the Technique For Others Preference By Similarity To Ideal Solution (TOPSIS) method and Fuzzy Analytical Hierarchy Process (FAHP) which can give weight to the specified criteria. The objectives of this study are: (1) to find out the most influential criteria as a basis for considering the selection of methods for implementing rigid pavement works. (2) to determine the method of implementing rigid pavement work that is appropriate by the existing criteria. This study uses a questionnaire survey. The results of this study indicate that the criteria for quality of work are the most influential criteria with a value of 0.351, then the implementation time criteria (0.201), the criteria for work costs (0.150), work safety criteria (0.133), work volume criteria (0.084), implementation process criteria (0.049), and the last is the implementation preparation criteria (0.032). The appropriate alternative used for the rigid pavement method is the mechanical method with a value of 0.621, while the mechanical method only reaches the values of 0.379.. Keywords: Fuzzy AHP; Perkerasan Kaku; TOPSIS.
KUAT TEKAN BETON CAMPURAN GGBFS DAN FLY ASH MENGGUNAKAN RETARDER Anni Susilowati; Iqbal Yusra
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.281

Abstract

Abstract One of the world's construction needs is casting in large volumes that require concrete with low hydration heat, and one of the problems is that the concrete has a setting during the casting queue. Therefore, a research was conducted on adding retarder to concrete with a mixture of GGBFS and Fly Ash. The purpose of this research was to analyze the physical and mechanical properties of concrete, the effect of adding retarder and obtain optimal retarder levels. This research used an experimental methods to make concrete specimens of 75% cement mix: GGBFS 15%: Fly Ash 10% with a water cement ratio of 0.5 using mix design SNI-03-2834-2000. Variations of the retarder added to the concrete mixture were 0%, 0.2%, 0.4%, and 0.6% by weight of cement with the Naptha RD 31 type. Analysis of the effect of the retarder used statistical regression test methods on SPSS. The results of research obtained the longest setting time in this researchwas 1890 minutes at a variation of 0.6% with a slump of 168 mm. The compressive strength of the concrete increased by 12.07% - 52.36% by using a retarder added material. Based on the research results, it was obtained that the optimum level of use of retarder in mixed concrete GGBFS and Fly Ash was 0.2% because it has the best physical and mechanical properties. Keywords: Fly Ash, GGBFS, Compressive Strength, Retarder
ANALISIS NERACA AIR PADA SUB DAERAH ALIRAN SUNGAI CODE YOGYAKARTA Alvin Pradana; Ratna Septi Hendrasari
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.276

Abstract

Abstract Water is one of the sources of human life. Population growth continues to increase and results in higher utilization of water sources. This will certainly affect the availability of water in the city of Yogyakarta. Water balance is a comparison between the water availability potential and the water demand of a place in a certain period. Water balance analysis is useful for knowing the amount of excess water (surplus) or lack of water (deficit) so that water use can be managed as well as possible. The calculation was done by analyzing the 10-year rainfall data using the Thiessen Polygon method to obtain the mean rainfall value. The available debit was calculated using the F.J. Mock method. The dependable discharge was calculated with 80% reliability from the 10-year debit data. The debit data was sorted from the largest to the smallest value, so that a probability value of 80% was obtained from the interpolation of the data sequence. Water demand was calculated based on the irrigation planning standard (KP-01). The results of the study show that the average water availability in the sub-watershed of Code River Yogyakarta was 527.92lt/sec. Based on the results of the analysis, the highest water deficit occurred in the first October at 278.40 l/sec and the lowest deficit was in the second July at 73.01 l/sec. However, the availability of water in certain months was quite abundant. Therefore, it is necessary to do a special study so that water is not wasted and can be used to cover water shortages in dry months. Keywords: Water balance, Water availability, Water demand, Code river, Thiessen polygon, FJ mock
PERBANDINGAN METODE PRELOADING DENGAN VAKUM KONSOLIDASI TANAH PADA PEMODELAN DI LABORATORIUM Ahmad Yasin Al Harits; Istiatun Istiatun
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.282

Abstract

ABSTRACT This study aims to determine the parameter comparison of the magnitude of the primary reduction and consolidation time in the preloading method using PVD and vacuum method using PVD with modeling in the laboratory. The benefit of this research is that it can provide a comparison of the preloading method and the vacuum method in terms of accelerating the consolidation time as well as contributing to science in the field of soil improvement. Primary consolidation theory is used in this research. Quantitative descriptive research method with testing data collection techniques by means of modeling in the laboratory. The modeling of the vacuum method used a test tub measuring (1.2 × 0.6 × 0.9) m, the vacuum pump suction capacity of 5 Pa, the air hose as PHD and geomembrane cloth as PVD material. The preloading method with PVD uses a test tub measuring (0.8 × 0.6 × 0.9) m, preloading load in the form of bangka sand (ɣ = 1.532 t / m³) with a thickness of 10 cm and a geomembrane cloth as PVD material. In each test basin filled with soil and water with a soil volume weight of 1.3 t / m³, a ground surface height of 0.5 m and a groundwater level of 0.42 m. The results showed that with the same amount of reduction, namely 7.26 mm preloading method using PVD took 81 hours while in the vacuum method the time needed was 41 hours. Thus it can be concluded that the reduction in the vacuum method is faster than the preloading method with PVD. Keywords: Primer settelment, PVD, Vacum, consolidation time
Eksperimen Gabungan Uji Lentur dan Implementasi Teori Wheatstone Bridge untuk Mengetahui Kekuatan Lentur dan Modulus Elastisitas Material Reng Baja Ringan I Nyoman Ardika; I Nyoman Suardika
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.277

Abstract

Abstract Lightweight steel battens are one of the elements roof frame structure buildings. The material that is widely used today is mild steel. To get optimal results use be lightweight steel battens can be done through a structural analysis. In the analysis structure of light steel battens, required the actual dimensions of the cross-section and strength the light steel battens. The actual dimensions of the cross sections are obtained by direct measurement, and strength is obtained through a laboratory testing process either tensile testing or bending testing. This research was conducted by combining the application of Wheatstone Bride theory and bending testing in determining the strength and modulus of elasticity of mild steel battens on eleven test samples of mild steel battens with a length of 600 mm each. The test result data is in the form of load relationship with voltage changes generated from the Wheatstone Bridge network on a multimeter reading connected to the Wheatstone Bridge network. The data processing of the result of the change in voltage test will produce strain, so that the load and strain relationship is obtained. Data analysis of load relationship with stretching and the load-stress relationship will describe the strain-stress relationship. From the results of data processing, the results of the research conducted were obtained yield stress (fy) 407.8739 MPa at 0.2% strain; allowable stress (fa) 271,916 MPa at 0.1333% strain; ultimate stress (fu) 616,094 MPa at a strain of 0.3021%; and Modulus of elasticity (Es) 203921 MPa. Keywords:Mild Steel, Strain, Wheatstonebridge, Stress
ALTERNATIF SKENARIO PEMANFAATAN AIR EMBUNG NELAS BERDASARKAN KARAKTERISTIK KETERSEDIAANNYA Kiki Frida Sulistyani; Danang Bimo Irianto
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.283

Abstract

Abstract East Nusa Tenggara Province is a province that has many embungs. Embung Nelas, in Lamaknen District, Belu Regencyis planned to meet the water demand of the population and cattle in Makir & Lamaksenulu Village as well as field water demand in Makir Village. Embung Nelas is design by using dependable flow Q 80%. From the calculation, Embung Nelas can meet the water demand in Makir and Lamaksenulu villages until 2040 for a population of 5888 people, 4029 large cattle, 1739 small livestock and 3277 chicken, as well as the irrigation water demand of 23 hectares the Makir Village Considering that the rainy conditions are not the same every year, a water use scenario is made based on the water conditions. There are 4 discharge conditions, dry discharge (Q97.3%), low discharge (Q 80%), normal water discharge (50.7%) and sufficient water discharge (26%). The simulation results in the other 3 scenarios, were obtained for the dry discharge of Embung Nelas in 2040 which was only able to irrigate 76% of raw water and cattle, in normal water conditions it could irrigate 6.6 Ha more fields and in sufficient water it could irrigate 12.9 Ha more fields. Keywords: Embung, Dependable flow, Simulation, Scenario
EVALUASI STABILITAS DINDING PENAHAN TANAH TIPE KANTILEVER DI DESA NGROTO, KECAMATAN PUJON, KABUPATEN MALANG Suhudi, Suhudi; Ehok, Simplisius
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.278

Abstract

AbstractWavy topographical conditions with high rainfall intensity cause cantilever type retaining wall on Jalan Brigjen Abdul Manan Wijaya in Ngroto village, Pujon District, Malang Regency, which borders the Konto River avalanche. The stability of the retaining wall can be expressed as Fs (Savety Factor). Factor value the security that is reviewed is the Fs bolster, namely the safety factor against the overthrowing force, the Fs shear is the safety factor against the shear force at the base of the retaining wall, Fs, the bearing capacity of the soil is a factor safety of soil bearing capacity. The purpose of this evaluation is to determine the wall planning cantilever type retaining wall and evaluate the stability of cantilever type retaining wall against the dangers of rolling, shearing, soil bearing capacity and knowing the budget plan for wall planning Cantilever type retaining wall. The result of this evaluation shows the cantilever retaining wall with dimensions H = 7, B = 3.5 Ta = 0.5 Tb = 0.7 D = 1 declared safe with the safety value for normal water level fs slide 1.8> 1.5 (safe), fs roll 2> 1.5 (safe), fs ground bearing capacity 186.8> 4752.86 (safe). Water face flood fs shear 2,6> 1,5 (safe) fs rolling 2,3> 1,5 (safe) fs soil bearing capacity 186.8> 4752.86 (safe). The total cost required for the construction of a cantilever type retaining wall of length 20 m T = 7 width 3.5 m for Rp. 290,570,000.Keywords: Retaining walls, Dimensions, Stability of retaining walls
DESAIN ULANG BADAN JALAN DENGAN GEOTEKSTIL SEBAGAI ALTERNATIF PENINGKATAN STABILITAS LERENG Rosiane Agustin; Handi Sudardja
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.279

Abstract

Abstract The condition of Ciawi – Sukabumi Toll Road section 2 has various topographies with difference of elevation. To get a safe and comfortable road alignment, cut and fill works are carried out. During the landfill work at STA.18 + 700 – STA.18 + 900 landslides occurred on the slopes. To ensure that the slope conditions are safe during the service period, redesign of the road bodies is carried out to produce slopes with a safety factor value (SF) ≥ 1.25 (Bowles, 1993) and SF ≥ 1.10 if the earthquake is calculated (SNI 8460: 2017). The slope stability phase is calculated on the original slope conditions by taking into account the potential for earthquakes at the research location. This analysis was carried out with manual calculations and the GeoStudio 2018 R2 sub program SLOPE/W, both calculations using the Simplified Bishop Method. The results of the sliding analysis obtained the original slope SF without considering the earthquake of 1.48 for manual calculations and 1.41 for SLOPE/W. Then the SF of the slopes with the effect of the earthquake is 0.79 with manual calculations and 0.82 with SLOPE/W, it is found that all conditions are basic sliding. The analysis showed that the earthquake had a significant impact on slope stability, with a decrease in slope SF of 44.23% and the slope was categorized as unstable. Then, it is recommended to add woven geotextile with a tensile strength of 200 kN and a river stone gabion counterweight. From the modeling in each condition that has been simulated, it is found that the countermeasures are Type III with slope SF 1.15 as a redesign. . Keywords: Bishop, Geotextile, Safety factor, SLOPE/W, Slope stability

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