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All Journal Media Ilmiah Teknik Sipil Jurnal Hutan Tropika Jurnal Teknik Silitek
Diharyo
Program Studi Teknik Lingkungan Universitas Muhammadiyah Palangkaraya
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science Industrial & Manufacturing Engineering

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Analisis Daya Dukung Tanah Pondasi Tiang Pancang Berdasarkan Uji Sondir: Analysis of the Bearing Capacity of Piled Foundation Soil Based on Sondir Test Diharyo; Rudy Yoga Lesmana; Achmad Imam Santoso
Jurnal Teknik SILITEK Vol. 4 No. 02 (2024)
Publisher : Fakultas Teknik Universitas Pasifik Morotai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51135/jts.v4i02.173

Abstract

His research aims to get a clear picture of the bearing capacity of the soil as a basis for foundation calculations. The bearing capacity of the soil is the ability of the soil to withstand the load of the building without experiencing excessive settlement. Field testing is carried out using two main methods, namely the Boring Test and Standard Penetration Test (SPT) as well as laboratory tests to analyze the physical and mechanical properties of the soil. From the test results at a depth of 15 - 22 meters, it was found that the density of the hard soil was of a clay-silty to sandy type. The foundation used was a deep foundation (Deep Foundations), namely a pile foundation or (Bore Pile) with a size of 40 cm x 40 cm or Bore foundation. Pile to his size 50 cm.
Investigasi Kualitas Tanah pada Pembangunan Kelapa Sawit PT. Tunas Harapan Baru: Soil Quality Investigation for Palm Oil Plantation Development at PT. Tunas Harapan Baru Diharyo, Diharyo; Santoso, Achmad Imam; Lesmana, Rudy Yoga
HUTAN TROPIKA Vol 19 No 2 (2024): Volume 19 Nomor 2 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i2.15854

Abstract

This study aims to evaluate the soil conditions of the land used for palm oil plantation development at PT. Tunas Harapan Baru. The evaluation was conducted by analyzing the physical and chemical properties of the soil, including texture, pH, organic matter content, and key nutrients. Data were obtained from laboratory tests on several soil samples from the location. The results showed that the soil conditions are suitable for palm oil plantation development, although some parameters require attention in sustainable land management. This article also discusses the environmental impact of land use for plantations on local soil conditions and provides recommendations for improving soil quality.
Analisis Bottom Ash Limbah Batu Bara PLTU Pulang Pisau Sebagai Agregat Halus Pada Campuran Beton: Analysis Of Bottom Ash From Pulang Pisau Coal Plant Waste As Fine Aggregate For Concrete Mixture Diharyo, Diharyo; Saputra, Norseta Ajie; Delon, Ignatius; Nabila, Naswa; Priska; Cahyani, Sabila Ika; Anita, Meliyana; Rohani, Octafiana Indah; Prenki
Media Ilmiah Teknik Sipil Vol. 14 No. 1 (2026): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

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Abstract

Bottom ash is a solid waste product of coal combustion at coal-fired power plants (PLTU), the volume of which continues to increase in line with growing energy demand. One potential use of bottom ash is as a substitute for fine aggregate in concrete mixes, thereby reducing the use of natural sand and minimizing the environmental impact of waste disposal. This study aimed to analyze the physical characteristics of bottom ash from the Pulang Pisau PLTU and evaluate its compliance with SNI 1969-2008 and SNI 1970-2008 testing requirements. The research phases included bottom ash sampling, physical characteristic testing (gradation analysis, specific gravity, water absorption value, and silt content), and subsequent evaluation against standard characteristics in accordance with SNI 1969-2008 and SNI 1970-2008. The results showed that the bottom ash from the Pulang Pisau PLTU had a fine, irregular gradation, a specific gravity lower than natural sand, and high porosity, potentially affecting the water absorption rate of the concrete. Overall, the bottom ash from the Pulang Pisau PLTU (Coal-fired Power Plant) is deemed suitable for use as an alternative to fine aggregate in concrete mixes. This utilization not only supports the reduction of natural aggregate use but also provides a more sustainable solution for industrial waste management.
Co-Authors Achmad Imam Santoso Anita, Meliyana Cahyani, Sabila Ika Delon, Ignatius Nabila, Naswa Norseta Ajie Saputra Prenki Priska Rohani, Octafiana Indah Rudy Yoga Lesmana