W. Partono, M. Irsyam, R. Nazir, M. Asrurifak, F. Kistiani, U. C. Sari
{"title":"Development of Peak Ground Acceleration Map of Semarang Based on Indonesian Seismic Code 2019","authors":"W. Partono, M. Irsyam, R. Nazir, M. Asrurifak, F. Kistiani, U. C. Sari","doi":"10.14710/mkts.v27i2.40714","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.40714","url":null,"abstract":"Surface peak ground acceleration (PGAM) needs for seismic forces of basement and retaining structures design. The PGAM value can be calculated using bedrock peak ground acceleration (MCEG) and multiplied it with site coefficient FPGA. For building design purposes, the MCEG value can be calculated based on the combination of DSHA (Deterministic Seismic Hazard Analysis) and PSHA (Probabilistic Seismic Hazard Analysis). Compared to the previous 2012 website response spectrum design which is displayed the PGAM value, only MCEG value at site position can be obtained from the new 2021 response spectrum design website. This paper describes the development of PGAM distribution of Semarang using Visual Basic programming language software. The distribution of DSHA and PSHA (2500 return periods) combination analysis for developing MCEG value also describes in this paper. The analysis was performed based on the earthquake record data from 1900 to 2016. The PGAM analysis was performed at 203 soil boring investigation positions and using FPGA site coefficients of SNI 1726:2019. The minimum and maximum PGAM distribution values at the study area are in between 0.45 through 0.55 g and the maximum PGAM is distributed at the northern part of the study area.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47354535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flexural Resistance of LVL Sengon Beams with Lateral Stiffener at Both Ends","authors":"A. Awaludin, Urwatul Wusqo","doi":"10.14710/mkts.v27i2.35911","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.35911","url":null,"abstract":"Slender beams (beams having a large section height to width ratio ( )) are commonly used in a structure that needs a large bending moment capacity. However, the use of slender beams in a structure is susceptible to overturning and torsion occurrence. Therefore, lateral bracing is usually placed in several points of the beam to prevent lateral-torsional buckling. In this study, a three-point bending test was conducted to evaluate the capacity of 250 mm x 50 mm x 2500 mm Laminated Veneer Lumber (LVL) beams made from Sengon. Two lateral supports were placed at both ends to prevent the beam's lateral displacement. The bending test result shows that the ultimate load of the LVL beam reach 27.88 kN before failure. Furthermore, the LVL beams' bending capacity was calculated using the mechanical properties provided by several previous studies. The LVL beam's capacity was predicted using manual calculation (based on SNI 7973: 2013) and numerical analysis. Numerical analysis was performed using ABAQUS software, and the results were evaluated using the Tsai-Hill and maximum strain failure criterion. The results showed that the maximum strain criterion provides a better prediction of the LVL beam's capacity than Tsai-Hill failure criterion.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67038697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Sodium Hydroxide Molarity on The Compressive and Splitting Tensile Strength of Ferronickel Slag-Based Alkali-Activated Mortar","authors":"Albert Kuncoro, Herry Suryadi Djayaprabha","doi":"10.14710/mkts.v27i2.32706","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.32706","url":null,"abstract":"The use of cement as the main binding agent in construction contributes approximately 7-10% in total of carbon dioxide gas emissions worldwide. In this study, the replacement of Portland cement using ground granulated ferronickel slag (GFNS) activated by the combination of sodium hydroxide (NaOH) dan sodium silicate (Na2SiO3) was utilized for producing alkali-activated mortar (AAM) as construction material. Four different mortar mixtures were prepared in this experimental work. There were three mixtures of ferronickel slag-based alkali activated mortar (FAM) with the variations of NaOH molarity of 6, 8, and 10M and cement-based mortar mixture (PCM) with water-to-cement ratio (w/c) of 0.5 was used as the control specimens. Overall, the flow and workability of the FAM specimen was lower than the PCM specimen due to the presence of silicate caused a sticky characteristic on the paste. On the other hand, the unit weight of FAM mortar was higher than the PCM specimen. Among all FAM mixtures, the most effective compressive strength and splitting tensile strength results were achieved by the FAM8 mixture, with a compressive strength at 28 days of 33.72 MPa and the splitting tensile strength at 28 days of 2.65 MPa, which had both good workability and chemical reaction of the material.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43521197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of Roundness Condition The Wall Structure Of Silos Wheat Storage Capacity 4650 Tons","authors":"S. Sukamta, S. A. Widyanto","doi":"10.14710/mkts.v27i2.37097","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.37097","url":null,"abstract":"This paper discusses the evaluation of asymmetrical inflating pattern phenomenon on the silo wall due to loading. The wall structure used corrugated wall modules with bolted connections. The storage capacity of the observed silo is 4,650 tons of wheat grains with a diameter of 19 m and a height of 20.875 m. Numerical analysis was performed using the finite element method. The condition of the bolt connection is directly measured using a torque wrench. Measurement and analysis is carried out when the silo is full or empty. The measurement results show that the bolt tightening torque in the full capacity loading of grain is about 2 times than that of when empty. This indicates that the silo walls are subjected shear stress of bolts on the overlap area between wall modules. The asymmetrical inflating pattern of the silo wall during loading is caused by the variation of the bolt tightness torque at the connection between the wall modules. The calculation results show that the minimum bolt tightness torque to produce friction stress (in the overlap area between wall modules) which is equal to the grain pressure stress is 47.36 Nm.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43831780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Krisnayanti, I. M. Udiana, Chrystin Chandra, D. F. B. Welkis
{"title":"Analysis of Available Discharge in the Temef Watershed Using the NRECA, F. J. Mock and Tangki Method","authors":"D. Krisnayanti, I. M. Udiana, Chrystin Chandra, D. F. B. Welkis","doi":"10.14710/mkts.v27i2.40505","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.40505","url":null,"abstract":"Temef Dam is located in Oenino Village Oenino District and Konbaki Village Polen District, Timor Tengah Selatan Regency which has a capacity of 45.79 millions m3. This research aimed to determine the amount of potential evapotranspiration using Penman Modification Method, the amount of dependable discharge with three methods that are NRECA, F.J. Mock, and Tank Methods, from those three methods will be selected a method that have closest characteristic of Temef Watershed, and filling timein Temef Reservoir. The maximum half monthly potential evapotranspiration in Temef Watershed using Penman Modification Method is 142.72 mm and the minimum is 71,25 mm. The average of annual discharge using NRECA Method is 249.89 m3/sec, F.J. Mock Method is 258.66 m3/sec, and Tank Method is 92.15 m3/sec. Based from three methods that have been used, Tank Method is the closest method to the characteristics of Temef Watershed, which RMSE value from Tank Method is 2.99. Filling time of Temef Reservoir to reach the planned reservoir volume in normal water year condition is three months and fifteen days and in low water year condition is six months.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43012945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Febryhandi Eka Kusuma Putra, Ahmad Zaki Romadhoni, I. R. Moe
{"title":"Flood Evaluation in Bula District Seram Bagian Timur","authors":"Febryhandi Eka Kusuma Putra, Ahmad Zaki Romadhoni, I. R. Moe","doi":"10.14710/mkts.v27i2.36163","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.36163","url":null,"abstract":"Bula District is strategic region in Seram Bagian Timur Regency which often experienced flood event especially in downstream areas. Flood Event that occurs causing loss of materials, even human life. This research was conducted to identify inundation that caused by the flood using two-dimensional inundation model. Model’s component consists of three part those are hydrology module, flood routing and inland flooding. Flood simulation result was calibrated with flood observation map in Bula District. Flood simulation resulted with flood discharge 25-year times period shows that inundation area that probably happen in Bula District is 5,4 km2 and flood volume that probably happen is 7,406,708 m3. Bila Besar Watershed contribute >70% to flood event that occurs based on inundation area and flood volume. Based on map overlay between simulation result into Satellite Google Imagery shows that 31.8% of 2,390 unit building in Bula District probably inundated by flood. ","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48806142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Urban Public Transportation Perspective in Meta-Analysis Study","authors":"Sri Sarjana","doi":"10.14710/mkts.v27i2.40635","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.40635","url":null,"abstract":"Urban public transportation is transportation system developed for the public interest that prioritizes the optimal integration of various resources and infrastructure in order to achieve sustainable city that is guided by green technology. The development of urban public transportation through scientific evolution that prioritizes the diversity of knowledge and technology as effort to create environmentally friendly city that is oriented towards sustainable development. Qualitative methods are applied in the analysis of themes studied by developing a meta-analysis. Primary data was obtained from the collection of scientific journals published from 1966 to 2020 as part the analysis of scientific literature. The results of study stated that there was significant increase in the number of papers and number of citations in last twenty years which indicated an improvement in knowledge development. There are several topics that have novelty that were found after an analysis on the theme of urban public transportation includes service quality, public space, transportation engineering, regulation, and bus rapid transit. For this reason, new topics found need to be followed up in further research in line with current technological developments.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43962754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wonogiri reservoir operation pattern after the construction of new spillway for flood control","authors":"Paska Wijayanti, I. Istiarto, R. Jayadi","doi":"10.14710/mkts.v27i2.35783","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.35783","url":null,"abstract":"Wonogiri reservoir in upstream Bengawan Solo experienced sedimentation problems that endanger its operation. Much of sediments come from Keduang watershed. To overcome this problem, closure dike was constructed to localize the sediment from Keduang watershed. The dike divides the reservoir into main and sediment storage reservoirs, each has its spillway. This paper presents results of the study on Wonogiri Reservoir operation during flood period after dike construction. The study followed a two-step calculation. It updated the design flood by employing rainfall data frequency analysis and Collins unit hydrograph. Flood routing was subsequently done by applying level pool method. Two conditions were considered, namely existing condition whose initial water level was +135.3 meters and new condition whose initial water level was +136.3 meters. The study reveals an increase of the flood discharge to Wonogiri reservoir by 7.7% and 3.6% for the 60 year and 500 year floods, respectively, as compared to the previous study of Pradipta (2014). The study shows that Wonogiri reservoir is prone to overtopping under 500 year flood. It is recommended to lower the control water level of the new spillway.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44520493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anissa Maria Hidayati, M. Yekti, Gede Fajar Eka Aditya Sujana
{"title":"Analysis of Sedimentation Quantity and Its Handling in the Downstream of Tukad Unda Klungkung using Hec-GeoRAS","authors":"Anissa Maria Hidayati, M. Yekti, Gede Fajar Eka Aditya Sujana","doi":"10.14710/mkts.v27i2.32225","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.32225","url":null,"abstract":"The river is one part of the water resources infrastructure, in addition to drive the water, river is often transporting sediment. Sediment is the result of erosion and is part of problems in the river. Unda watershed having their regional coverage is quite wide, so that erosion that causes to the passage of it is estimated that sedimentation large enough. This research analyze the total weight of the sediment that is settles on the downstream Tukad Unda and compare the analysis of sedimentation between USLE method and sedimentation method in HEC-RAS by supporting ArcGIS and HEC-GeoRAS so that can describing the shape of look over profile of to scatter the sediment that was formed, as well as the efforts to overcome the problems. The data used in the form of watershed area, soil type, rain and river flow. Furthermore, the method used is Universal Soil Loss Equation (USLE), the application of HEC-GeoRAS and ArcGIS. The results showed the average erosion that occurred in the last 10 years amounted to 30.57 tons/ha/year, then the results of the HEC-GeoRAS analysis showed that the river bed profile changes experienced a significant silting of 2,365 m3 using the application and 2,654 m3 with USLE method. Countermeasures can be done by normalizing the riverbed with regular dredging at the stationing point UD 64-60 then at the stationing point UD 55-57 and at stationing UD 45-41 in accordance with the analysis results obtained through the HEC-GeoRAS application.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42573502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structure Behavior and Performance from Unconfined Masonry and Confined Masonry Building Design","authors":"Alfien Hernanda Putra, A. O. Irlan","doi":"10.14710/mkts.v27i2.33561","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.33561","url":null,"abstract":"Many buildings in Indonesia were damaged during the earthquake, especially non-engineered brick walls building. One example of non-engineered brick walls building is Bendung Village Head Office in Serang, Banten, which was damaged by the 2019 Pandeglang earthquake. This building was built without reinforced concrete beams and columns known as unconfined masonry buildings. In this study, the building will be redesigned with ETABS software to determine the similarities between the structural weaknesses from ETABS and the actual damage. The results of the structural analysis give a time period of 0.814 seconds, a base shear force of 195.5 kN, and a stress on the wall that is 50% similar to the real damage. Then, the same building was designed following the rules and regulations for earthquake resistant buildings in Indonesia so that it became a confined masonry building. The result is a time period of 1.586 seconds, a base shear force of 114.2 kN, and a brick wall that is not damaged when exposed to earthquake loads. However, the dimensions and reinforcement of beams and columns that comply with the minimum requirements for earthquake resistant buildings in Indonesia need to be enlarged because their strength capacity is exceeded by the working load.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42493538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}