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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Pengabdian kepada Masyarakat Nusantara
Soedjarwoko, Endrik
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Social Sciences Transportation

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Analisis Sub-Struktur Menara BTS pada Area dengan Daya Dukung Tanah yang Rendah Cahyono, Heru Setiyo; Arief, Lukman; Soedjarwoko, Endrik; Handini, Devi Ratna
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.10805

Abstract

The construction of BTS towers to fulfill equitable communication requires analysis of structural construction calculations so the tower can be standing properly in locations that have low soil bearing capacity. This research aims to analyze the design of the BTS tower sub-structure to withstand in structural loads, wind, overturning, and uplift forces so the tower can be standing properly. To achieve the research objectives, studies and analyses were conducted through literature study, load analysis, structural modeling through software analysis and interaction diagrams, evaluation of soil bearing capacity, and verification of applicable construction standards in Indonesia. The analysis shows the dead load of the sub-structure, the overturning moment of 6.539 x 10³ kN.m in the X direction and 5.352 x 10³ kN.m in the Y direction meet the safety value of 1, thus ensuring stability according to SNI 8460: 2017. The maximum ground pressure is 97,808 kN/m², below the required 294,200 kN/m² at a depth of 1.4 m, with safety factors of soil bearing capacity (3.008), shear capacity (2.897), and shear strength (1.5) all meeting safety standards. The reinforcement analysis follows SNI 03: 2847-2019, specifying that D16-200 reinforcement is required for bottom and top with a ratio of 0.002 and 0.001. Torsional shear for axial (1,225 x 10³ kN.m) and compression (1,578 x 10³ kN.m) stress conditions, as well as ratios exceeding 1% ensure the safety of the support. Overall all structural elements meet the safety requirements, ensure the stability of the tower and comply with relevant standards.
Gasifikasi Sekam Daun Tebu dalam Upaya Penyediaan Alternatif Gas LPG di Kabupaten Malang Cahyono, Heru Setiyo; Soedjarwoko, Endrik; Cahyono, Danan Eko
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 6 No. 4 (2025): Edisi Oktober - Desember
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v6i4.7051

Abstract

Kegiatan pengabdian ini menguji penerapan gasifikasi sekam daun tebu untuk menyediakan substitusi energi rumah tangga yang praktis di Kabupaten Malang. Instalasi unit gasifier skala komunitas dipasang dan diuji di Desa Bulu Lawang (Kec. Bulu Lawang), dilaksanakan oleh PT. Bumi Bersih Berenergi bekerja sama dengan Fakultas Saintek Universitas Modern Al-Rifa’ie Malang (UMAIN). Fokus utama adalah transformasi sekam daun tebu menjadi gas bakar (syngas) yang layak menggantikan LPG dalam aktivitas memasak rumah tangga, serta membangun kapasitas masyarakat dalam pengolahan bahan bakar padat: pengeringan hingga kadar air 14 – 15%, pencacahan maksimum 3 mm, dan pelletisasi bila perlu. Hasil operasional menunjukkan rasio praktis yang ditetapkan proyek: 1 kg LPG ≈ 3,81 kg sekam daun tebu; 1 kg sekam daun ≈ 0,77 kWh; sehingga energi efektif yang disediakan oleh 3,81 kg sekam daun ≈ 2,934 kWh (ekivalen energi operasional per 1 kg LPG menurut basis lapangan proyek). Penerapan mampu menurunkan kebutuhan LPG pada keluarga sasaran, memperkaya keterampilan warga, dan mengurangi volume limbah yang sebelumnya dibakar atau dibuang. Naskah ini memaparkan metodologi, hasil uji lapang, analisis teknis, dampak sosial-ekonomi-lingkungan, serta rekomendasi skala lanjutan.
Co-Authors Arief, Lukman Cahyono, Danan Eko Cahyono, Heru Setiyo Handini, Devi Ratna