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All Journal Jurnal Sains dan Teknologi Jurnal Abdi Masyarakat Multidisiplin
Stevi Cahyani
Universitas Dian Nusantara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary

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Sosialisasi Inovasi Beton Ramah Lingkungan Berbasis Tempurung Kelapa sebagai Substitusi Agregat Kasar Rifaldi Adi Saputra; Era Agita Kabdiyono; Agung Sakti Meldian; Stevi Cahyani; Yayo Hardiansah; Galang Romadlon; Hariyadi Hariyadi
 Jurnal Abdi Masyarakat Multidisiplin Vol. 5 No. 2 (2026): Agustus: JURNAL ABDI MASYARAKAT MULTIDISIPLIN
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jammu.v5i2.2798

Abstract

The increasing use of concrete in infrastructure development has led to a growing demand for natural aggregates, particularly gravel as coarse aggregate. This condition requires the introduction of environmentally friendly alternative materials based on local resources. Coconut shell is an organic waste commonly found in communities, yet its practical use as a construction material remains limited. This community service activity aims to improve participants’ knowledge and basic skills in utilizing coconut shell as a substitute for coarse aggregate in environmentally friendly concrete mixtures. This study employed a descriptive qualitative method through socialization, demonstration, simple practice, observation, documentation, discussion, and evaluation of participants’ understanding. The data were analyzed descriptively to explain the implementation process, participants’ responses, and changes in their understanding of coconut shell waste utilization. The results show that participants gained knowledge about the concept of green concrete, the function of coarse aggregate in concrete mixtures, the initial processing stages of coconut shell, and the potential of local waste as an alternative material for simple construction applications. The implication of this activity is the improvement of community awareness regarding waste utilization and the importance of sustainable construction materials. The originality of this activity lies in its educational and practical approach to introducing coconut shell as a coarse aggregate substitute through direct socialization and hands-on practice with the community.
Analisis Kapasitas Saluran Drainase terhadap Debit Rencana di Kelurahan Bidara Cina, Kecamatan Jatinegara, Jakarta Timur Anastasia Septya Wardaningrum; Jalaludin Jalaludin; Stevi Cahyani
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 3 (2026): Juni 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i3.8676

Abstract

Bidara Cina is a flood-prone area in East Jakarta due to high rainfall, limited channel capacity, and low elevation along the Ciliwung River. This study analyzes the existing drainage channels' capacity to accommodate design runoff discharge based on BMKG rainfall data and hydrological parameters. Methods include calculating design rainfall intensity (Gumbel/Mononobe method), design discharge (Rational Method), and existing capacity (Manning’s formula) using secondary data from BMKG, BIG, BPS, and East Jakarta Water Resources Sub-department. Main channel segments were selected as representative samples. Based on frequency analysis of 20-year extreme data (2006–2025) from Halim Perdanakusuma Station, the design rainfall intensity is 78.71 mm/hour for a 5-year return period and 96.60 mm/hour for a 10-year return period. Evaluation of 15 channel segments shows that macro channels (Ciliwung River and Ciliwung Waterway) and the main connecting channel (West Otista Raya Street) meet the required capacity. However, 7 secondary channel segments in densely populated areas (RW 06, RW 07, and RW 11) fail to meet capacity or overflow due to narrow dimensions and the lack of local retention polders.
Co-Authors Agung Sakti Meldian Anastasia Septya Wardaningrum Era Agita Kabdiyono Galang Romadlon Hariyadi Hariyadi Jalaludin, Jalaludin Rifaldi Adi Saputra Yayo Hardiansah