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All Journal Publikasi Riset Orientasi Teknik Sipil (Proteksi) Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)
Risma Niswati Tarman
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Transportation

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ANALISIS KEHILANGAN AIR (NON REVENUE WATER) PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) KOTA BAU BAU Risma Niswati Tarman; Tamrin Tamrin
JURAL RISET RUMPUN ILMU TEKNIK Vol. 1 No. 1 (2022): April : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1526.605 KB) | DOI: 10.55606/jurritek.v1i1.273

Abstract

Water loss can be defined as the difference between the recorded amount of water in the system and the amount of water out of the system shown, in a water supply system is not entirely produced water installations reach consumer. Usually there is a leak here and there, called the loss of water. Then to reduce or minimize the water loss rate needed the right solution. One of solution that can be used is the Non Revenued Water (NRW) program. NRW can be defined as water that can be measured and a known amount of be chased but can not or may not be income, but it can be justified. The one of the methodologies that can be used to determine the amount (NRW) is a method of infrastructure leakage index (ILI) used Software WBEasycalc3. Water loss rate is the percentage ratio between water loss and the amount of water distributed in piped water network, while the water balance is calculated based on the amount of incoming water flow, consumption meter-Revenue, customer meter inaccuracies, water loss and physical loss. Both of two magnitudes in the ILI value is calculated by using Table Matrix Target that compiled by regulators of water service DKI Jakarta.
Analysis of Swelling Behavior of Fakfak Clay Soils Stabilized with Lime: Analisis Perilaku Kembang Susut Tanah Lempung Fakfak yang Distabilisasi dengan Kapur Muhlisah, Nurul; Jusmawandi; Risma Niswati Tarman
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 2 (2025): Vol.7 No 2 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v7n2.p125-130

Abstract

Clay soils often exhibit problematic characteristics. Expansive clay, which has swelling and shrinkage properties that are influenced by its moisture content. The study analyze the effect of lime mixing on the swelling and shrinkage behavior of soil. The method used involves mixing Fakfak clay with lime in proportions of 0%, 2%, 4%, 6%, and 8%, with a curing period of 3 days. The original soil used is classified as OH or A-7-5, with an average moisture content of 50.51%, a bulk density of 0.612 g/cm³, a specific gravity of 2.3, a liquid limit of 61.59%, a plastic limit of 48.86%, and a shrinkage limit of 32.94%, with a plasticity index of 12.73%, classified as medium plasticity and cohesive. The results showed that soil plasticity decreased with increasing lime content, with the lowest value found at 8% lime (1.04%). The largest shrinkage limit was found in the 2% lime mixture (33.27%), while the smallest was in the 8% lime mixture (28.77%). The conclusion lime mixing is effective in improving the soil's condition, with the 8% lime mixture demonstrating a stable composition with respect to the swelling behavior, compared to both the original soil and other lime mixtures.
Co-Authors Jusmawandi Muhlisah, Nurul Tamrin Tamrin