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Muhammad Mukhlisin
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Department of Civil Engineering Politeknik Negeri Semarang (State Polytechnic of Semarang) Jl. Prof. Sudarto, SH Tembalang, Kota Semarang (50275) Jawa Tengah, INDONESIA
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Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil
Published by Politeknik Negeri Semarang
ISSN : 08538727     EISSN : 25274333     DOI : http://dx.doi.org/10.32497/wahanats
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Transportation
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil or Civil Engineering Forum: Journal of Civil Engineering Development is a medium of communication and dissemination of research results, case studies, and scientific reviews (applied) to scientists and practitioners in the field of Civil Engineering. This journal is published by the Civil Engineering Department of Semarang State Polytechnic periodically 6 (six) months, ie June and December. Scopes of Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil or Civil Engineering Forum: Journal of Civil Engineering Development are: 1. Civil and Structural Engineeering 2. Environmental Engineering 3. Geotechnical Engineering 4. Transport Egineering 5. Water Resources Engineering 6. Constructions Management 7. Building Constructions. 8. Disaster Management.
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 283 Documents
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Pengaruh Pemanfaatan Limbah Batubara (Fly Ash) Terhadap Kekuatan Tekan Mortar Type M Kusdiyono, Kusdiyono; Rochadi, Mochammad Tri
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 17, No 2 (2012): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v17i2.119

Abstract

Fly ash and bottom ash is a solid waste generated from coal burning power plants. Solid waste is present in large enough quantities. The amount is quite large, so it requires a management that does not cause environmental problems such as air pollution, water and ecosystem degradation. The research done in the field of Engineering Materials Research in an effort to utilize industrial waste that can be used for mortar to other industrial materials, and the results of the study are intended to address the increasingly complex problems of the solid wastes such as fly ash and how to maximize its utilization. One way to capitalize is made mortar. To determine the extent of the effect of adding fly ash on compressive strength of mortar, the addition of the composition is mixed with fly ash ranging from 0%, 5%, 10%, 15% and 20% of the weight of cement with water factor cement is determined the same in all variations of the mixture. The samples used were cuboid (5 cm x 5 cm x 5 cm), planned mortar is Type M. The samples were tested at ages 7, 14, 21 and 28 days, with the first treated before testing. Total sample of 60 fruit, consists of five variations and each variation of a total of 12 pieces. The results obtained increased compressive strength highest average in the addition of Fly Ash every 5% of the well at a young age (7 to 28) days with the highest compressive strength 7 days reached 373.71 kg / cm ² at 20% addition of Fly Ash and 403, 41 kg / cm ² for the addition of 15%, the compressive strength was the lowest average age of 14 days obtained at 307.68 kg / cm ² at 5% addition of Fly Ash and 28 days amounted to 355.78 kg / cm ² to mix mortar with the addition of Fly Ash of 10%. With the regression equation Y = 8.244 X ² - 40.47 x + 384.3 and the correlation R ² = 0.987. This is because Fly Ash has a fine grain that will make the mortar more slashy (workable), solid and makes cavities between aggregate grains filled by Fly Ash, so that the pores and cavities become smaller, thereby increasing the compressive strength of mortar. Thus the picture of the use of Fly Ash as a mortar significantly proven.
Pengaruh Mulsa Jerami Terhadap Laju Erosi Pada Tanah Mediteran Parhadi, Parhadi
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 20, No 1 (2015): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v20i1.142

Abstract

In general, several factors that affect to erosion are climate, soil, topography, land cover and human activities. Erosion is a natural process which is difficult to be removed completely or zero erosion rate. Efforts to do is get the resulting erosion is still below the maximum threshold that does not exceed the rate of erosion of soil formation. One of the ways to control erosion is by providing ground cover with straw mulch. This study is aimed to determine the effect of straw mulch as a ground cover in mediterranean soil on the erosion rate. 4 The test was carried and for variations of rain intensity of 30 mm / hour, 40 mm / hour, 50 mm / hour and 60 mm / hour, 2 variations of slope 10o and 20o and the wide use of straw mulch is 4 tons / ha. Measurement of soil erosion is performed by putting the mediterranean soil with bulk 1.23 ton/m3 in to the 1m x 1m x 0,1 m box Then bombarded with rain simulation tool (rainfall simulator). Erosion measurements performed for conditions without mulch and the mulch. This research was done with physique model in Laboratory. The results of the research showed that straw mulch of 4 tonnes / ha can reduce soil erosion antd an average of 88. Use of Straw mulch of 4 tonnes / ha can also reduce the value of the cover factor with an average of 90%.
Petunjuk Penulisan Jurnal Wahana Penulisan, Petunjuk
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 21, No 01 (2016): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v21i01.826

Abstract

Petunjuk Penulisan Jurnal Wahana
Pengaruh Variasi Ketebalan Selimut Beton Terhadap Lentur Balok Beton Bertulang Pasca Bakar Fitriana, Anjany Ayu; Hidayati, Ari Nur; -, Sugiharto; -, Sukoyo
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 22, No 1 (2017): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v22i1.897

Abstract

High temperatures at the time of the fire have a considerable influence on the residual strength of existing concrete. So that it would also result in the use of the building after the fire. The purpose of the study was to assess the extent of the percentage reduction in the compressive strength and flexural strength in the postcombustion reinforced concrete beams with concrete cover thickness and combustion with different duration. The research method by giving a different duration of combustion in 6 hours and 8 hours to beam test specimen measuring 150 mm x 200 mm x 600 mm with a thick concrete cover of 2 cm, 3 cm, 4 cm and 5 cm with the quality of concrete fc' 22,5 MPa the test beam to the age of 28 days. The result taken from the test will be displayed in a graph of the relations between the length of the combustion duration and a decrease in flexural strength that occurs in any concrete covers. The result is the percentage decrease in the flexural strength smaller as thick blankets. The test results showed that the percentage decrease in the covers 2 cm on burning six hours by 19.72 % and 30.25 % in burning 8 hours. At 3 cm thick blanket large consecutive decrease 10.72 % at 6 hours and burning of 23.58 % on burning eight hours. At 4 cm thick blanket was 6.63% on combustion 6 hours , and 22.09 % on burning eight hours. While on the covers 5 cm was 5.97% at 6 hours and burning of 21.64 % on burning 8 hours. While the compressive strength after burning 6 hours is 19.26 MPa with decreased 15.44 % , and the compressive strength in the burning of 8 hours is 17.74 MPa to 22.11 % decline from the beginning without burning compressive strength of 22.78 MPaKata kunci : flexural strength, concrete cover, after fire concrete, concrete beams
Analisis Kegagalan Konstruksi Dan Bangunan Dari Perspektif Faktor Non Teknis Wiyana, Yustinus Eka
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 17, No 1 (2012): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v17i1.114

Abstract

Construction failure is not uncommon as the construction industry is very complex, where many parties involved and processes take place in an open space. The construction failure and the building failure might be caused by either the technical or non-technical factors. The non-technical factors mostly derive from the lack of resources competence in the business entities, the employee skill, and the expertise. This paper discusses the mutual relationship between the SBU (Business Entity Competence), the SKA and the SKT (Man power Competence), and the Construction failure. This research is conducted to analyse the construction failure from the perspective of the resources competence with regard to specially the SBU, the SKA, the SKT, where as the aims of this research is to indentify the non-technical factors causing the construction failure and the building failure in Central of Jawa, and also to analyse the contributions of the SBU and the SKA and the SKT toward the Construction failure. The factors that influence the failure was measured in the qualitative model and simulated with the LPS method using the causal relationship approaches between the variables supported by the TETRAD program IV vertion 4.3.9-18. The result of the research reveals that the failure variable are structurally affected by the SBU variable 0,1181, by the SKT variable at 0,0501, and by the SKT for 0,0250. The test processes of the SBU, the SKA, and the SKT has not been implemented properly so that the certificates issue can not yet be justified. The resource conditions in the district and the city around the project area are still troublesome, such as lack of the man power having the SKT, and the SKT, and there are many skilled workers that have not got the competence test.
Analisis Konsumsi Energi Pada Penggunaan Pendingin Udara Kamar Di Patra Jasa Convention Hotel Semarang Yunanto, Arga Praditya; Adiutomo, Kukup; Hartono, Nugroho; Supriyo, Supriyo
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 19, No 2 (2014): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v19i2.137

Abstract

which plays an important role in the progress of the economy and the Development of Semarang. Convention Hotel Patra Jasa engaged in recreational services, namely hotel based hall. Lodging and convention hotel in the operational process is not expected to occur interference. Some factors that may affect the operations covered by the hotel is the cost of electricity per month. In this case meant that the use of electricity consumption (Air Conditioning). The method used in the calculation of IKE (Intensity of Energy Consumption). IKE is also used in the calculation method of energy conservation, which can improve the efficiency of energy use .Therefore, it is expected the presence of this study can provide convenience in efficiency savings in the use of IKE particular cooling.
PENINGKATAN EFISIENSI BAHAN STRUKTUR BETON BERTULANG DENGAN PENGGUNAAN VARIASI CAMPURAN MUTU BETON PADA DAERAH TARIK BETON Sukoyo, Sukoyo
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 18, No 2 (2013): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v18i2.984

Abstract

In a cross-sectional design of reinforced concrete, is generally assumed to be only 30 to 50% higher cross section work withstand being hit withstand tensile rest. From these assumptions and with the use of the model diagram, meaning there are still opportunities to optimize the function of the concrete with the use of lower levels of the cement mixture. With this method the benefits expected to be obtained and optimally efficient use of cement as an adhesive in the construction of reinforced concrete. Experiments carried out by varying the mix proportion of concrete as high as 50% higher for the cross-sectional area that will receive the attractive force. Of the six variations resulting mixture is made that the flexural strength of concrete as indicated by the flexural strength test results obtained that the bending moment variation cement mix with lower levels do not affect the flexural strength of about 9.2 KNm.
PENGARUH PENAMBAHAN SERBUK BAN BEKAS TERHADAP PARAMETER MARSHALL PADA ASPAL BETON CAMPURAN PANAS LAPIS AUS AC-WC PERKUATAN STRUKTUR KOLOM DAN BALOK AKIBAT PERUBAHAN LAYOUT RUANGAN DENGAN METODE CFRP (STUDI KASUS : PEMBANGUNAN MASJID AS-SHOHABAT TEMBALANG) N S, Danang Prastyo; Prawesti, Ratih; Sugiharto, Sugiharto; Sukoyo, Sukoyo
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 23, No 1 (2018): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v23i1.1355

Abstract

This research was conducted to analyse the alternative which might be done to givesolution for column structure reinforcement and bar in case of building room layoutchange. There were 4 methods which were presented for analysing column structurereinforcement and bar in this research. The dimensions of the removed column were25x40 cm with a length of 350 cm and the reinforced beams were 25x40 cm withspan length of 800 cm. This research also showed the price which was gotten fromvarious methods did as consideration of solution chosen. The analysis wasconducted by using SAP2000 application. This analysis was done by 2 columnremoval without reinforcement which in the fact the structure is not powerful if thereis not any reinforcement by the result of 2 column removal so that for safetyanticipation, it is better if reinforcement is implemented. The first method is themethod with the elimination of 2 columns but without the reinforced structure, afterSAP2000 analysis on the portal, obtained the maximum moment that happened was76,1 KN exceeding the permitted moments of 62 KN so that this will be dangerous tothe strength of the structure, therefore for security anticipation should be donereinforcement. The second method which is the first solution is the method ofJacketing Column & Beam obtained the result that the building was considered safeby enlarging the original beam dimensions 25x40 cm to 35x65 cm and the originalcolumns 25x30 cm to 40x40 cm. It is also supported by the value of the momentsshown not exceeding the maximum allowed moments. The third method is analternative to the second retrofit solution by providing additional structuralelements instead of the existing missing columns, but with this method it willinterfere with the aesthetic value of the building, since the new element beams arevery visible. The last method is the use of CFRP (Carbon Fiber ReinforcedPolymer), this method proved to be the most efficient way to overcome the structuralreinforcement problems at As-Shohabat mosque in terms of processing time, laborcost, and sufficient strength to replace the reinforcement that occurs due to thereduction of the column that supports the block.Kata kunci: strengthening column and beam, strengthening structure, CFRP
ANALISIS PARAMETER STATISTIK BUTIRAN SEDIMEN DASAR PADA SUNGAI ALAMIAH (STUDI KASUS SUNGAI KRASAK YOGYAKARTA) Junaidi, Junaidi; wigati, Restu
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 16, No 2 (2011): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v16i2.102

Abstract

Natural rivers are characterized by a meandering channel with multiple grain-size bed and unsteady flow. Among some of the properties of the sediment grains, the size of the sediment is one of nature's most important and widely used in sedimentation engineering. Grain size greatly affects the easy presence and extent of sediment transported. To study the characteristics of bed material on the sediment transport, various studies have been conducted. This paper examines statistical parameters of grain on the sediment transport from a natural river (River Krasak, Yogyakarta). Variables studied include the classification of grain size, mean (average), standard deviation (sorting), skewness, and kurtosis. Based on the statistical parameters of grain size, the results from three stations showed that bed materials of Krasak 1 are characterized by gravel mode, very poorly sorted, and distributed platikurtic negative skewness. Types of samples are polymodal. Bed materials of Krasak 2 are characterized by the mode of sand, and poorly sorted, and distributed platikurtic very positive skewness. Type of samples are bimodal. While the bed material of Krasak 3 are characterized by sand mode and poorly sorted, and distributed platikurtic very positive skewness. Types of samples are polymodal
MODEL PERESAPAN AIR HUJAN DENGAN MENGGUNAKAN METODE LUBANG RESAPAN BIOPORI (LRB) DALAM UPAYA PENCEGAHAN BANJIR Budi, Basuki Setiyo
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 18, No 1 (2013): WAHANA Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v18i1.120

Abstract

Land around building of Materials and Land Laboratory of Civil Engineering Department of Semarang State Polytechnic infrastructure such as roads (asphalt, concrete, paving blocks) and drains an area with impermeable pavement that can not absorb water. Impact when the rainy season occurs puddle on a large scale into the flood, instead of the drought in the dry season due to lack of availability of ground water. To overcome this, the seepage of rain made using the method Biopori Hole Infiltration (LRB). Infiltration pits Biopori a cylindrical hole about 10 cm in diameter is dug into the ground. Depth does not exceed the groundwater table, which is about 100 cm of the soil surface. The hole is filled to the brim organic waste closer to the ground. LRB can increase the ability of soil to absorb water. The water absorption wells that penetrate through the surface of the wall into the soil around the hole LRB. Thus, it will increase the water reserves in the soil. Biopori soil moisture content and moisture content of 85.342% 35.168% native soil. So the water content in the soil biopori greater than the water content in the original soil. Infiltration load will increase in line with increasing hole diameter Biopori infiltration. LRB diameter of 10 cm with a depth of 100 cm using only horizontal surface 79 cm2 produces vertical surface area of 0.314 m2 wall hole, then expand the soil surface can be 40 times the direct contact with the compost. The volume of incoming waste deposited in the pit will reach a maximum of 7.9 liters biodervitas ground through the wall hole, will cause maximum load 25 liter/m2 composting. Land use will affect the power of absorbing soil against rain water. On the ground that a lot of concrete and sealed in a rather dense residential, small power of absorbing soil. This is very different from the conditions in the yard or garden soil that has a power of absorbing up to 100%. Therefore, in the densely populated area needed more LRB to increase the power of absorbing soil.

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