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All Journal JITEK (Jurnal Ilmiah Teknosains) JFMR (Journal of Fisheries and Marine Research) Portal: Jurnal Teknik Sipil Jurnal Abdi Insani Jurnal Teknik Sipil Jurnal WIDYA LAKSMI (Jurnal Pengabdian Kepada Masyarakat) Jurnal Teknik Sipil Jurnal Civil Engineering Study Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Jurnal Citra Kuliah Kerja Nyata PASAK: Jurnal Teknik Sipil dan Bangunan Jurnal Citra Kuliah Kerja Nyata

Decky Rochmanto, Decky

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Author-ID : 624628

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Spatial and WTP Development Plan Perencanaan Pembangunan Spal Dan Ipal Untuk Sarana Peningkatan Kualitas Lingkungan Kampung Nelayan Tanjungsari Kabupaten Rembang widias tuti, iin; Umam, Khotibul; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 2 No. 01 (2022): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Domestic wastewater in Kelurahan Tanjungsari has not been properly managed, where the greywater is discharged directly into the drainage. Where the drainage is discharged directly at the sea, causing seawater pollution due to domestic waste. The purpose of this Final Project planning is to design SPAL and IPAL as a means of improving the environmental quality of Tanjungsari Village. The results of the study on the technical aspects showed that the average wastewater discharge of Tanjungsari Village was 69.36 L / person per day. The pipe diameter used in planning the development of SPAL and IPAL for this area is 100 mm or 4 inches. In planning SPAL and IPAL, Tanjungsari Village is equipped with several complementary buildings, namely as follows: 1) Manhole with a size of 70 cm x 70 cm x 100 cm, 2) Grease Trap with a size of 80 cm x 50 cm x 30 cm, 3) Control tub with size 60 cm x 40 cm x 30 cm, 4) Collecting Well with a size of 100 cm x 100 cm x 230 cm, 5) Distribution Box with a size of 100 cm x 50 cm x 130 cm, 6) IPAL 1 room with a size of 500 cm x 300 cm x 300 cm, 7) IPAL 2-5 rooms measuring 300 cm x 300 cm x 300 cm.Budget Plan The cost spent for planning the SPAL and IPAL for Tanjungsari Village is Rp. 3,059,073,121.37.

Analisis Kepadatan Tanah Pada Akses Jalan Conveyor PLTU TJB Unit 3,4 Dengan Menggunakan Standar AASHTO T 191 Fahrizal, Yusuf; Adi Saputro, Yayan; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 2 No. 01 (2022): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

In connection with the mobilization of large vehicles in the PLTU TJB unit 3,4 conveyor area, a road is needed, to build roads it is necessary to pay attention to compaction of the subgrade so that there is no damage such as land subsidence and other construction failures caused by compaction that is not up to standard. The method used is an experimental method, the data used are secondary data obtained from the site pland road with a length of 747 m, the number of sandcone test points is 32 points, the primary data is directly taken from the research object, laboratory testing includes soil properties, compaction, and soil density testing. with the standard sandcone method AASHTO T 191, the results of the soil property test containing gravel, coarse sand, medium sand, fine sand, the type of grain all contain fly ash and bottom ash material, the compaction test obtained Lab max 1.610 gr/cm3, with water content optimum 11,111%, there are several STAs that have not met Field moisture content for compaction is (-1% + 3%) against OMC, the AASHTO T 191 standard sandcone test obtained an average (R) 95,861%, previously correction was made to the aggregate retained in sieve no.4.

Optimalisasi Campuran Fly Ash, Bottom Ash, dan Semen Untuk Lapis Pondasi (Improving Subgrade) Nely Mak'sudah, Ari; Adi Saputro, Yayan; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 2 No. 01 (2022): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

PLTU Tanjung Jati B Jepara causes excessive environmental pollution, namely fly ash and bottom ash (FABA) waste. So this waste is very suitable to be used as a stabilizing mixture for ordinary embankment soil. The purpose of this study was to find the optimal value for the foundation layer, using an experimental method to examine the free compressive strength of the soil stabilizing material. By using a mixture of 50% FA + 50% BA and 60% FA + 40% BA with the percentage of cement addition of 3%,5%,7%,9%,11%,15%. The results showed that the highest stress value occurred in the mix design 50% FA+50% BA with a percentage of 9% cement, the highest stress increase was at a percentage value of 4,943 kg/cm2 during a 3 day curing period. With the highest field density value at T3 of 1,553 gr/cm3. With the results of the highest soil density R value at T3 of 123.247%. The UCS and CBR values for the best comparison for the foundation layer increased with the addition of bottom ash composition and PCC content in the mixture.

Reservoir Perencanaan Struktur Reservoir Air Bersih Desa Pecangaan Kulon, Kecamatan Pecangaan, Kabupaten Jepara: Perencanaan Struktur Reservoir Air Bersih Desa Pecangaan Kulon, Kecamatan Pecangaan, Kabupaten Jepara Prasetya, Herry Puguh; Umam, Khotibul; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 1 No. 01 (2021): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

The existence of clean water in a village is very important, considering the activities of rural life which are now starting to be dynamic. This planning is based on SNI 7509:2011 concerning Procedures for Technical Planning for Distribution Networks and Service Units for the Clean Water Supply System and the Regulation of the Minister of Public Works Number 18/PRT/M/2007 concerning Implementation of Drinking Water Supply System Development. The reservoir is planned to use reinforced concrete material with a base plate thickness of 250 mm and reinforcement D13-150, a concrete wall thickness of 150 mm and reinforcement D13-100, and a cover plate with a thickness of 100 mm with reinforcement 10 - 150. Beam dimensions are 20 x 30 cm with reinforcement 5D13 support and stirrup reinforcement 8-150 and field reinforcement 4D13 and stirrup reinforcement 8-200. Column dimensions are 25 x 25 cm with 6D13 main reinforcement and 8-150 stirrup reinforcement.

Particularity Analysis Of Sediment Deposits And Sediment Rates In The Wiso River In Jepara Regency): Analisa Partikularitas Endapan Sungai Wiso Kabupaten Jepara Triyano, Al; Rochmanto, Decky; Adi Saputro, Yayan
Jurnal Civil Engineering Study Vol. 1 No. 01 (2021): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

The sedimentation process that occurs continuously will cause silting due to sedimentation which affects the decrease in capacity flow of river particles. Sedimentary particles carried by the river flow heading to the sea will cause deposition in the estuary area so that it will blocking the flow of rivers to the sea. Based on the data from the sediment sample test results, gradation of sediment particles in the Wiso river consists of fine sand (Fine Sand) to very fine silt (Very Fine Silt) the average soil type is silt and the value of The density of the sediment has an average of 2,613. As well as for the benefits of this type of Sedimentation can be used as a water-resistant material for reservoirs and construction dam building.

Perencanaan Tebal Perkerasan Kaku Ruas Jalan Raya Jepara Bangsri pada Km 11 sampai Km 12 Menggunakan Pedoman Bina Marga 2017 Rochmanto, Decky; Adi Saputro, Yayan; Tiara, Mayang
Jurnal Civil Engineering Study Vol. 2 No. 02 (2022): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

The damage that occurs due to increased intensity of vehicle loads that come and transport goods on Jalan Raya Jepara - Bangsri so that the pavement layer received increases along with the increase in traffic volume on the road. For this reason, it is necessary to plan a new pavement using rigid pavement to overcome the damage. The method used is the 2017 Pavement Design Manual. Average daily traffic data, annual average daily traffic data, and CBR value data for soil testing using the DCP tool. Calculations using the 2017 Pavement Design Manual methodology, on a 275 mm thick concrete slab, 100 mm thick concrete layer, and 150 mm Class A aggregate drainage layer. The connection is divided into two parts, namely the longitudinal connection by binding using threads 16 - 750, and the cross connection with dowels using ordinary reinforcement D 36 - 300, the budget plan is Rp. 5,917,030,000.00.

PERENCANAAN GEDUNG MESS 5 LANTAI PEKERJA PABRIK PT. PARKLAND WORLD INDONESIA (PWI) DI MAYONG JEPARA. Prasetya, Hendryk Ratna; Hidayati, Nor; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 3 No. 02 (2023): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v3i02.334

The development of the industrial revolution has an impact on economic growth that is increasingly evenly distributed throughout Indonesia, not least in Jepara Regency, especially in industrial areas that have been provided by the government, but the limited land available has an impact on the increasing number of tall buildings being built to support housing needs in the surrounding area.In the construction of multi-storey buildings, careful planning is needed so that the building structure is able to stand strong, withstand earthquakes, be efficient and meet SNI. Careful planning will avoid the occurrence of building failures or unwanted construction failures.In this final project the building being reviewed is a 5-story building which is a 5-story mess building for factory workers of PT. Parkland World Indonesia in Mayong Jepara, The calculation of the structure of the building is reviewed against dead loads, live loads and earthquake loads using SAP 2000. The calculations include roofs, plates, beams, columns, and foundations. The planning location of the building is on Jl. Raya Jepara - Kudus, Pelang, Kec. Mayong, Jepara Regency, Central JavaFrom the planning obtained a concrete structure with a thickness of 120 mm 12 - 200 slab, beam 400 x 800 mm 9 D19, 300 x 600 mm 8 D12, 200 x 400 mm 7 D12. column 500 x 750 mm 12 D19, and 500 x 500 mm 8 D19, with concrete quality (f'c) = 30 MPa, deform reinforcement quality (fy) = 400 MPa and plain reinforcement quality (fy) = 240 MPa. the roof structure uses double angel steel truss 2L.40.40.3 and 2L.30.30.3, the lower structure uses 6 m long piles with a diameter of 40 cm.

Efektivitas Penambahan Limbah Serat Aren Terhadap Kuat Lentur Dan Kuat Tekan Beton Fiber Syaifuddin, Dedi Ahmad; Saputro, Yayan Adi; Rochmanto, Decky
Jurnal Civil Engineering Study Vol. 3 No. 02 (2023): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v3i02.622

Pada penelitian ini, penulis menganalisa tentang pemanfaatan limbah serat aren sebagai bahan tambah beton serat dengan prosentase serat dan variasi panjang serat yang diuji dengan pengujian kuat tekan dan kuat lentur. Perbandingan prosentase serat yang digunakan adalah 2,5%, 2,7% dan 3% dengan variasi panjang serat yaitu 2cm dan 4 cm. Adapun hasil kuat tekan beton serat pada umur 28 hari, variasi panjang serat 2 cm dengan prosentase serat 2,5%, 2,7% dan 3% secara berturut-turut adalah 19,35 MPa, 21,5 MPa dan 21,43 MPa. Hasil kuat tekan beton fiber pada umur 28 hari, variasi Panjang serat 4 cm dengan prosentase serat 2,5%, 2,7% dan 3% secara berturut-turut adalah 21,33 MPa, 17,02 MPa dan 18,38 MPa. Berdasarkan hasil penelitian, di peroleh panjang serat efektif yang baik untuk digunakan sebagai bahan tambah beton serat yaitu serat dengan panjang 2cm. Adapun hasil kuat lentur beton serat variasi panjang 2cm dengan prosentase serat 2,5%, 2,7% dan 3% secara berturut-turut adalah 4,78 MPa, 5 MPa dan 5,13 MPa. Sehingga, berdasarkan hasil penelitian dapat disimpulkan bahwa campuran pada beton serat aren yang baik digunakan sebagai bahan tambah adalah beton serat dengan kadar serat 2,7% dan 3% dengan variasi Panjang 2cm.

Perencanaan Sistem Penyaluran Air Limbah (SPAL) Dan Instalasi Pengolahan Air Limbah (IPAL) Domestik Terpusat Di Dukuh Desa Pendem Kecamatan Kembang Kabupaten Jepara Qolbi, Muhammad Ainun; Hidayati, Nor; Rochmanto, Decky; Roehman, Fatchur; Faqih, Nasyiin; Mushthofa, Mushthofa
Jurnal Civil Engineering Study Vol. 3 No. 02 (2023): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v3i02.751

omestic wastewater in Pendem villages, especially Randusari and Belik hamlets, is still not treated properly. Waste water, especially greywater, is immediately disposed of in ditches that lead to rivers. This activity can damage the river environment and pollute residents' clean water sources. The purpose of this planning is to plan the SPAL and IPAL for the residents of Dukuh Belik and Randusari so that good and proper environmental sanitation conditions are created. The results of this planning for the waste water distribution system (SPAL) are that the length of the waste water distribution pipe in Randusari Hamlet reaches 2,861.40 m while in Belik Hamlet it is 3,028.70 m, equipped with a manhole building with a diameter of 60 cm and a control tank of 50 x 50 cm. In the wastewater treatment installation, 3 units of manufactured Biofilter IPAL are used, in Hamlet Randusari, 3 RCO-100 type IPALs with a capacity of 100 m3 are used, and 2 RCO-60 type IPALs with a capacity of 60 m3 are used in Dukuh Belik. From this plan, a budget for the construction of the SPAL and IPAL Dukuh Randusari is required in the amount of Rp. 4,141,427,000.00. And for hamlet buying Rp. 2,586,384,000.00.

Perencanaan Dinding Penahan Tanah Di Ruas Jalan Desa Tanjung Pakis Aji Jepara Faizah, Nur Laili; Umam, Khotibul; Rochmanto, Decky; Ariyanto
Jurnal Civil Engineering Study Vol. 4 No. 01 (2024): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v4i01.886

Retaining walls are a ground control technique that is very necessary to overcome landslides. As happened in the Tanjung Pakis Aji village area. It has steep slopes and there are indications that landslides often occur during the rainy season. The soil parameters that need to be known to plan soil retention walls for testing include specific gravity (Gs); 2.65 kN/m2, void number (e); 33.9, porosity 97.14, shear angle φ ; 29.71 ˚, soil cohesion (c) 24.5 kN/m2, dry soil volume weight (yd ) ; 1.18 kN/m3, wet soil volume weight (yb); 1.87 kN/m3, air content (Wn); 15.29%. Dimensional calculations, stability control, reinforcement of retaining walls are very important in planning retaining walls. The aim of this research is to plan a retaining wall at this location using a cantilever type retaining wall. The results show that the cantilever type retaining wall with dimensions H = 7 m, B = 3 m, T = 0.4 m, Tt and Th = 0.5, Lt = 1, Lh = 1.m, the cantilever is declared safe for the condition of the soil with a safety factor value of Fgs = 4.061 (safe), Fgl = 2.57 (safe), F carrying capacity = 6.62 (safe). From these calculations, reinforcement of types D19-250, D19-200, D19-200 can be obtained, with shrinkage reinforcement D13-100, D13-200.

Co-Authors Adib, Muhammad Ahmat Wakit Anwari, Hilal Arif Mustofa Ariyanto Darmoko, Wahyu Setyo Fahrizal, Yusuf Faizah, Nur Laili Faqih, Nasyiin Fatchur Roehman Fathurrozi, Muhammad Ferdiyanto, Anggi Hafish Nuswantoro, Izzatur Hanggoro, Wahyu Khotibul Umam Ma'arif, Syamsul Miftahurrohman, Muhammad Minachussania Mohammad, Gunawan Mushthofa Nely Mak'sudah, Ari Nurofi, Muhammad Adib Nurul Istiqomah Prasetya, Hendryk Ratna Prasetya, Herry Puguh Pratama, Andrie Mandala Yudha Qolbi, Muhammad Ainun Qomaruddin, Mochammad Rizki, Muhammad Efendi Rochmawati, Nur Saputro, ST., MT., Yayan Adi Saputro, Yayan Adi Shadli, Maulana Chasan Syaifuddin, Dedi Ahmad Tiara, Mayang Tira Roesdiana Triyano, Al Wibowo, Gentur Wahyu Nyipto Wibowo, Valentino Herlia widias tuti, iin

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