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All Journal Pawon: Jurnal Arsitektur Student Journal Gelagar Sondir Journal of Sustainable Technology and Applied Science Jurnal Infomanpro

Mohammad Erfan

Institut Teknologi Nasional Malang

Author-ID : 1286025

Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Industrial & Manufacturing Engineering Transportation Other

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STUDI ALTERNATIF PERENCANAAN STRUKTUR ATAS FLYOVER MANAHAN DENGAN KONSTRUKSI BOX GIRDER PRATEGANG METODE SPAN-BY-SPAN: Studi kasus : Jalan layang / flyover Manahan, Surakarta, Jawa Tengah NOVANDA ERWAN SAPUTRA; Ester Priskasari; Mohammad Erfan
STUDENT JOURNAL GELAGAR Vol. 2 No. 2 (2020): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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The design of the Manahan flyover uses a prestressed box girder with an external tendon system to streamline the combination of the relatively small volume of concrete and the prestressing force of the tendons so that a relatively small deflection is obtained in the span. The use of prestressed box girders is more profitable than the I-girder beam at a level crossing of the Solo - Yogyakarta railroad track after the Jl. Adi Sucipto - Jl. MT Hariyono towards Jl. Dr. Moewardi, Surakarta City because the method of implementing the I-girder beam causes more traffic jams. Statics analysis uses certain static and segmental implementation methods (span-by-span method) to obtain section properties of the box girder cross section. The rules that the author uses in the calculation are SNI 1725-2016, SNI 2847-2013. The discussion materials include tendon layout planning, loss of prestressed force, control of stress and deflection, box girder-shear reinforcement, and end block. The prestressed cable used is the VSL tendon type GC Grade 270, low relaxation strand type 6-37 units. The results obtained from the pre-stressed box girder planning are used 20 segmentals which are divided into 3 types of segments, namely the pedestal segment, the deviator segment, and the standard segment. Using 12 VSL type GC tendons with 35 strands per tendon. The deflection that occurs is 5.194 cm ( ) and there is no tensile stress.

MODEL PENGUKURAN KELELAHAN PEKERJA KONSTRUKSI DENGAN JARINGAN SARAF TIRUAN / NEURAL NETWORK: Pengukuran Kelelahan Pekerja Konstruksi Dengan Jaringan Saraf Tiruan / Neural Network Darmawan Sastra Negara; Mohammad Erfan; Annur Ma'aruf
STUDENT JOURNAL GELAGAR Vol. 2 No. 2 (2020): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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In implementing construction projects, it is necessary to pay attention to the implementation of Occupational Safety and Health (K3), which is an effort to prevent work accidents in the work environment. The purpose of K3 is to maintain the health and safety of the work environment and also to protect colleagues, workers' families, consumers, and other people who may also be affected by working conditions. Measurement of worker fatigue will be carried out using the Neural Network approach method. Neural Network is a machine learning algorithm that mimics how the neural networks of living things work. An artificial neural network is a network of many small processing units (called neurons), each of which performs a simple process, which when combined, results in complex behavior. Artificial neural networks can be used as a tool to model complex relationships between input and output in a system to find patterns in data. The test results on the neural network modeling show a high level of accuracy that is equal to 96%. Thus the results of this Neural Network can be trusted, because it has a level of accuracy close to the real / actual situation where the results of the numbers are close to 100% of the actual events.

STUDI ALTERNATIF BATU PUTIH (LIMESTONE) SEBAGAI PENGGANTI AGREGAT 10/10: Studi Kasus Batu Putih (Limestone) Sebagai Pengganti Agregat 10/10 Pada Lapis Aspal Beton AC-WC (Asphalt Concrete-Wearing Course) Muhammad Danang Pratama Kuswanto; Bambang Wedyantadji; Mohammad Erfan
STUDENT JOURNAL GELAGAR Vol. 3 No. 1 (2021): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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The limitation of river stone material sources for road pavement on the island of Madura is increasing the shortage of times. However, in this area there is abundant and easy to find white stone material. Thus, this study took an alternative study of limestone limestone as a substitute for the 10/10 aggregate in the AC-WC mixture. White stone material obtained from the village of Soccah Kab. Bangkalan, Madura Island. The purpose of this research is to determine the feasibility and influence of the white stone from Soccah Kab. Madura Island Bangkalan as a substitute for the aggregate 10/10 in terms of the Marshall characteristic value. The next step is to plan the manufacture of 45 samples with white stone variations of 25%, 50% 75%, 100%. Using the percentage of KAO from river stones 5.80% and KAO white stones 5.84% which was carried out from February to May 2020 construction materials laboratory of Civil Engineering, National Institute of Technology Malang. From the results of research white stone as a substitute for aggregate 10/10 in the AC-WC mixture is suitable for use, it can be seen from the value of Stability, Flow, VIM, VMA, MQ, and VFA which meet the specifications of Bina Marga 2018. AC-WC has influenced the characteristic value of Marshall which is significant as evidenced by the results of hypothesis testing where Fcount 3.501 > Ftable 3.48. The optimum percentage of use of white stones is at a variation level of 60.53%. With a stability value of 1046.40 kg, Flow 3.25 mm, VIM 4.19%, VMA 16.98%, MQ 322.49 kg/mm, and VFA 75.34%.

PENGARUH LIMBAH BATU MARMER SEBAGAI PENGGANTI AGREGAT KASAR 10/10 : Studi kasus lapisan ATB ( Asphalt Treated Base) terhadap nilai karakteristik Krindho; Togi H. Nainggolan; Mohammad Erfan
STUDENT JOURNAL GELAGAR Vol. 3 No. 1 (2021): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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The composition of the pavement material greatly determines the quality of the asphalt pavement mixture, considering that marble waste from marble stone processing in Gamping Village, Campurdarat District, Tulungagung Regency is not used as a building material, therefore this study aims to determine whether marble waste is suitable for use as a substitute for mountain rock aggregates. or black stone as a mixture of asphalt pavement. And what percentage of the recommended amount of marble waste is used. Based on previous research, it is known that marble stone waste has characteristics as a substitute for coarse aggregate, this study aims to determine the content of marble stone waste as a substitute for coarse aggregate 10/10 in the ATB layer, by examining its levels. marble waste 25%, 50%, 75% and 100%. From the results of the research conducted, it is found that: (1) Aggregates meet specifications and are suitable for use as a mixture of road pavements. (2) Marble stone waste as a material from coarse aggregate 10/10 on the ATB layer has an effect or gives a significant difference. This can be seen from the test results, where Fcount> Ftable. The stability value at 0% marble content was 1048.56 kg and at 100% marble content was 938.32 kg. the expected criteria value in the mix of limits set by the 2018 Highways Agency such as the value of stability, flow, VIM, VMA, VFA and MQ.

STUDI PERENCANAAN STRUKTUR ATAS GEDUNG MENGGUNAKAN SISTEM GANDA (DUAL SYSTEM): Studi Kasus : Gedung Apartemen Begawan Malang Pilar Saktiawan; Ester Priskasari; Mohammad Erfan
STUDENT JOURNAL GELAGAR Vol. 3 No. 1 (2021): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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Indonesia is one of the countries that is very prone to earthquakes, one of the causes is that Indonesia is sandwiched between 3 earth plates which allows a shift between these plates so that it can cause earthquakes. Therefore it is necessary to anticipate efforts to improve the quality of infrastructure development such as high-rise buildings that are designed to be able to withstand the forces of the earthquake that occur in order to minimize structural damage to the building and the presence of casualties. The building to be reviewed is the Begawan Malang apartment building. In connection with this, the authors try to conduct a planning study on the Begawan Malang apartment building using a dual system (Dual System), namely a special moment-bearing frame system and structural or shear walls. In which this paper will focus on the planning of the reinforcement of structural elements of beams, columns and walls as well as knowing the detailed drawings of the reinforcement in the structure of beams, columns, beam column relationships, and shear walls of the plan. Where are the results of the planning, with the reinforcement design obtained on beams with dimensions of 450 mm x 750 mm with longitudinal reinforcement in the right and left support areas, namely 4D29 tensile reinforcement and 3D29 compression reinforcement and in the field area with 2D29 tensile reinforcement and 3D29 compression reinforcement. For column elements with dimensions of 900 mm x 900 mm, longitudinal reinforcement is obtained 28D32 and transverse reinforcement in the plastic hinge area 4 ∅ 12 - 80 mm, the outer area of the plastic hinge: 4 ∅ 12 - 100 mm, and the area of the through connection: 4 ∅ 12 - 100 mm. And the structural wall (shearwall) has dimensions of 4200 mm x 450 mm with 40D32 longitudinal reinforcement and transverse reinforcement in the boundary area ∅ 12 - 120 mm and in the area of the shear wall 12 - 300 mm.

PENGARUH VARIASI JUMLAH TUMBUKAN: Pada Campuran Aspal HRS-WC Dengan Penambahan Karet Alam (Lateks) Akhmad Rahardeans Maulana; Mohammad Erfan; Eri Andrian Yudianto
STUDENT JOURNAL GELAGAR Vol. 3 No. 1 (2021): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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Increasing traffic volume which is increasing rapidly can result in a level of damage such as deformation of the road surface layer caused by the influence of excessive traffic load (overload), it is necessary to have a good quality pavement mix planning. Latex is a type of natural rubber which has high resistance to cracking and has high wear resistance. Improve the quality of the asphalt mixture with the addition of natural rubber (latex) as an additive which is expected to improve the characteristics of the pavement. Meanwhile, for the use of fly ash filler, each additional level results in a lower flow value, therefore this study is expected to produce a better HRS-WC pavement mixture.This study aims to determine the effect of variations in the number of collisions and also the feasibility of latex as an added material, fly ash as a filler in the HRS-WC layer. With a variation of the collision 2x65,2x70,2x75,2x80,2x85.The test results of the effect of variations in the number of collisions on Marshall characteristics that have been carried out produce a value that meets the specifications set by the Public Works Office of Bina Marga 2018 including testing: aggregate absorption test 2.89%> 3%, specific gravity 2.29 gr / cm2> 2.5 gr / cm. Obtained a stability value of 946.82 kg, a flow value of 3.54 mm, a VIM value of 4.06%, a VMA value of 17.29%, an MQ value of 270.54 kg / mm, a VFA value of 76.39% So that the optimum number of collisions is 76. Thus it can be declared that it meets the requirements of the HRS-WC specification.

PERENCANAAN STRUKTUR BAWAH (ABUTMENT) PADA PEMBANGUNAN JEMBATAN PETAK, KABUPATEN NGANJUK: Studi Kasus : Pembangunan Jembatan Petak, Kabupaten Nganjuk Sandika Prasetyo; Ester Priskasari; Mohammad Erfan
STUDENT JOURNAL GELAGAR Vol. 3 No. 1 (2021): JURNAL GELAGAR
Publisher : TEKNIK SIPIL S-1 ITN MALANG

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Borepile foundation is a type of deep foundation, which has several advantages compared to pile foundation. The advantage of the borepile foundation is that it does not provide ground vibrations, can penetrate rocks, and does not cause land level rise, considering that the area around the bridge is a densely populated settlement. With the existing steep river conditions, a strong abutment planning is also required to withstand the soil pressure behind the abutment. This planning aims to determine the dimensions and amount of reinforcement in the abutment and borepile foundation according to the needs. The structural loads of the bridge that work on the abutment refer to SNI-1725-2016 and SNI-2833-2016. The method used to calculate the bearing capacity of the bored pile foundation is the Mayerhoff method. From the planning results, the dimensions of the abutment are 6.5 m high, 6 m wide, and 12 m long. From the calculation results, the basic reinforcement of the abutment body is D29 - 100 with dividing reinforcement D19 - 200 and shear reinforcement D13 - 400. Whereas the x direction pilecap reinforcement is installed with D25 - 125 and the y direction reinforcement D25 - 165 with dividing reinforcement D16 - 200. used is the bored pile foundation D = 80 cm with a depth of 14 m. For the bearing capacity of a single pile foundation Qa = 3896.25 kN while the bearing capacity of the pile group of Qpg = 39411.556 kN. The reinforcement used for the foundation is 14 D22 with spiral reinforcement D12-80. The result of a single pile settlement is 7.14 cm> 8 cm. It can be concluded that the abutment design and bored pile foundation can be used in the construction of the Petak Bridge, Nganjuk Regency.

ALTERNATIF DESAIN STRUKTUR BANGUNAN ATAS JEMBATAN RANGKA BAJA TYPE STEEL ARCH DENGAN RANGKA WARREN : PADA JEMBATAN TUKAD BANGKUNG DI KAB. BADUNG – BALI I Komang Dedi Wijaya; Sudirman Indra; Mohammad Erfan
SONDIR Vol. 4 No. 1 (2020): Jurnal Sondir
Publisher : Institut Teknologi Nasional Malang

Dalam perencanaan dan perancangan jembatan sebaiknya mempertimbangkan fungsi kebutuhan transportasi, persyaratan teknis dan estetika-arsitektural yang meliputi : Aspek lalu lintas, Aspek teknis, Aspek estetika. jembatan alternatif desain struktur bangunan atas jembatan rangka baja type steel arch dengan rangka warren pada jembatan tukad bangkung di kab. badung – bali merupakan jembatanrangka baja yang memiliki bentang keseluruhan 360 m dan lebar 9,6 m. alternatifstruktur atas pada jembatan Tukad Bangkung Kabupaten Badung - Bali dengan penggabungan antara konstruksi baja pelengkung / busur ( Steel Arch ) 2 sendi rol dan struktur rangka warren. Dimana antara pelengkung / busur dengan pelat profil baja dihubungkan dengan kabel yang berfungsi memberikan dukungan kekuatan pada struktur rangka tersebut oleh karena bentangan yang panjang. Pada perencanaan jembatan kali ini menggunakan metode L.R.F.D dan untuk pemodelan analisa struktur penulis menggunakan program bantu STAADPRO V8i. Dari analisa hasil perhitungan struktur atas didapat dimensi perencanaan jembatan Steel Arch yang di rencanakan menggunakan profil baja, WF 350 x 175 x 7 x 11 untuk gel. memanjang, WF 918 x 303 x 19 x 37 untuk gel. melintang, WF 350 x 350 x 12 x 9 untuk gel. melintang atas, WF 498 x 432 x 45 x 70 untuk gel. induk, LD 250.250.25 untuk ikatan angin.

PENGARUH PENAMBAHAN LIMBAH PLASTIK POLYVINYL CHLORIDE PADA CAMPURAN ASPHALT TREATED BASE ATB TERHADAP NILAI PARAMETER MARSHALL TEST Arif Rizky Andika Pratama; Mohammad Erfan; Ester Priskasari; Agus Prajitno
SONDIR Vol. 1 No. 2 (2017): Jurnal Sondir
Publisher : Institut Teknologi Nasional Malang

Dalam penelitian ini, dicoba pemanfatan limbah plastik PVC pada campuran ATB -ditinjau dari karakteristik Marshall Test- dengan menggunakan 6% kadar aspal. Variasi penambahan PVC yang digunakan yakni 2%, 4%, 6% dan 8% dari berat keseluruhan benda uji. Agregat batu pecah diambil dari queri Desa Toyomerto Kecamatan Singosari Kabupaten Malang dengan limbah Polyvinyl chloride bekas baliho. Dari pengujian tersebut didapatkan nilai optimum PVC sebesar 4,98% pada parameter Marshall Test sebagai berikut: Stabilitas (1004,59 kg), Flow (3,48mm), VIM (3,34%), VMA (17,39%), MQ (288,53 kg/mm), VFA (80,98%) dan IP (88,34%). Nilai ini masuk dalam batas Spesifikasi Umum Dinas Pekerjaan Umum Bina Marga Provinsi Jawa Timur 2018. Untuk pengujian hipotesis parameter Marhall Test seperti stabilitas, flow dan MQ terdapat pengaruh akibat penambahan PVC dan untuk parameter Marshall Test seperti VIM, VMA, VFA tidak terdapat pengaruh akibat penambahan PVC.

ANALISA PENGARUH PEMAKAIAN FLY ASH SEBAGAI SEMENTISIUS PADA BETON MUTU SEDANG TERHADAP KUAT TEKAN BETON Frederius Herman Daton Rau; Ir. Sudirman Indra, MSc; Mohammad Erfan, ST, MT
SONDIR Vol. 2 No. 1 (2018): Jurnal Sondir
Publisher : Institut Teknologi Nasional Malang

Fly ash atau abu terbang merupakan sisa-sisa pembakaran batu bara yang dapat digunakan dalam campuran beton didasari pada sifat material ini yang memiliki kemiripan dengan sifat semen. Berdasarkan hal tersebut diatas, maka dilakukan penelitian yang bersifat eksperimental untuk mengetahui dan menganalisa pengaruh pemakaian fly ash sebagai sementisius/ bahan pengganti semen pada beton mutu sedang (25 MPa).Dalam penelitian ini akan dibuat benda uji A, B, C, D, E, dan F. Benda uji A merupakan beton normal sedangkan benda uji B, C, D, E, dan F memiliki variasi presentase pemakian fly ash untuk setiap sampel 20 %, 25%, 30%, 35%, 40%. Jumlah benda uji masin-masing 4 buah setiap variasi. Pengujian kuat tekan beton dilakukan pada umur 28 hari. Hasil penelitian menunjukan bahwa dengan 5 variasi kadar fly ash yang berbeda diperoleh hasil kuat tekan rata-rata beton tertinggi yaitu pada beton dengan kadar fly ash 20 % sebesar 31,10 MPa. Peningkatan kuat tekan sebesar 6,17 MPa (24,75%) dari beton normal 24,93 MPa, sedangkan kuat tekan rata-rata terendah yaitu pada beton dengan kadar fly ash 30 % sebesar 22,32 MPa. Penurunan kuat tekan sebesar 2,61 MPa (10,47 %) dari beton normal 24,93 MPa. Berdasarkan uji data menggunakan pengujian statistik Menggunakan beberapa metode diperoleh nilai koefisien determinasi (R2) sebesar 0,0447. Hal ini berarti bahwa 4,47% perubahan nilai kuat tekan dipengaruhi oleh kadar fly ash sebagai sementisius pada campuran beton sedangkan sisanya dipengaruhi oleh hal yang lain. Berdasarkan analisa koefisien korelasi diperoleh nilai (r) = 0,2115 (Tingkat hubungan pemakaian fly ash sebagai sementisius terhadap kuat tekan beton tergolong lemah), sedangkan hasil pengujian hipotesis dengan menggunakan metode Distribusi Student (nilai t) diperoleh t hitung < t tabel atau 0,433 < 2,776 maka H0 diterima dan Ha ditolak sehingga tidak ada pengaruh antara presentase fly ash sebagai sementisius terhadap kuat tekan beton dengan tingkat keyakinan 95 %.

Co-Authors Agus Prajitno Agus Santosa Ahmad Saoki Indrian Akhmad Rahardeans Maulana Annur Ma'aruf Arief Setiyawan Arif Rizky Andika Pratama Bambang Wedyantadji Darmawan Sastra Negara Deny Missa Deviani Kartika dyanjas yahya Eding Iskak Imananto Eri Andrian Yudianto Ester Priskasari Faklav A. Nenometa Frederius Herman Daton Rau Gaguk Sukowiyono Hadi Surya W I Komang Dedi Wijaya I Komang Dedi Wijaya I Wayan Mundra Krindho Kristiani Ehok M Robi Muhammad Danang Pratama Kuswanto NOVANDA ERWAN SAPUTRA Novita Christina Nusa Sebayang Pilar Saktiawan Reynaldi Sutrisno Sandika Prasetyo Sudirman Indra Sudirman Indra Tharsisius Floridus Luan Togi H Nainggolan Togi H Nainggolan Wahyu Bangkit P Yustika Hubertha Haning

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