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All Journal Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Jurnal Teknologi Lingkungan UNMUL
Mardewi Jamal
Mulawarman University
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Other

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EVALUASI KINERJA STRUKTUR DENGAN MENGGUNAKAN METODE ANALISIS PUSHOVER PADA STRUKTUR BETON BERTULANG MENGGUNAKAN APLIKASI ETABS Muhammad Rizky Ramadhan; Ery Budiman; Mardewi Jamal
Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Vol 10, No 1 (2026): JTS TEKNOLOGI SIPIL
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ts.v10i1.26558

Abstract

Building structures located in earthquake-prone areas must have ductile behavior and be able to withstand seismic loads safely up to a certain limit condition. This study aims to evaluate the performance of a reinforced concrete structure using the pushover analysis method with the help of ETABS software. Pushover analysis is a nonlinear static method used to determine the inelastic behavior of the structure and its performance level based on the formation of plastic hinges in the structural elements.The object of this research is a multi-story reinforced concrete building model analyzed under design earthquake loads in accordance with the provisions of SNI 1726:2019, concerning the seismic design of buildings and non-building structures. The analysis results show that plastic hinges begin to form in the beam elements before the columns, indicating that the failure mechanism follows the Strong Column-Weak Beam (SCWB) concept. Based on the performance evaluation criteria from ATC-40, the structure is categorized at the Damage Control performance level, which means that in the event of an earthquake, the building can still withstand the seismic loads with a very low risk of casualties.From these results, it can be concluded that the analyzed building structure has good performance against the design earthquake loads, and the pushover analysis method is effective in evaluating the inelastic behavior and performance level of reinforced concrete structures.
RAINWATER HARVESTING PLANNING AS AN ALTERNATIVE FOR CLEAN WATER SUPPLY IN PUBLIC FACILITIES IN SEPAKU DISTRICT: A STUDY OF SUPPLY POTENTIAL USING PROBABILITY METHODS Ika Meicahayanti; Elvina Amalia Putri; Mardewi Jamal; Dharwati Pratama Sari; Budi Haryanto; Tamrin Tamrin; Agus Maryono; Arno Adi Kuntoro
Jurnal Teknologi Lingkungan UNMUL Vol 10, No 1 (2026): Jurnal Teknologi Lingkungan UNMUL
Publisher : Mulawarman University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtlunmul.v10i1.27622

Abstract

The clean water supply in Sepaku District covers only 15.27% of the total water demand. Efforts to utilise rainwater as an alternative source are necessary due to this region has high rainfall. The study aims to analyse the potential of rainwater discharge and design a Rainwater Harvesting (RWH) system to support clean water provision. The analysis was conducted on rainfall data using probability methods, calculations of potential rainwater discharge, and sizing of the RWH system components. The rainwater potential was calculated based on reliable rainfall, roof area, runoff coefficient, and first-flush volume. The RWH system design included determining suitable storage tank capacity, gutter specifications, and first-flush pipe dimensions. The results of this study indicate that the potential for rainwater harvesting and the design of the Rainwater Harvesting (RWH) system vary across buildings, depending on roof catchment area and rainwater availability. The rainwater potential discharge varies accross locations, ranging from 109.3 to 434 m3/year, influenced by differences in roof area as catchment area. The RWH system planned consists of storage tank capacities of 2.2, 3.2, and 7.5 m³, horizontal pipes of 100–150 mm, vertical pipes of 75–125 mm, and first-flush pipes of 6 inches or 10 inches with a height of 1.45–3.38 m. This design is adjusted to the rainwater potential that can be applied in each building and is expected to become an alternative clean water supply.
Co-Authors Agus Maryono Arno Adi Kuntoro Budi Haryanto Elvina Amalia Putri Ery Budiman Meicahayanti, Ika Muhammad Rizky Ramadhan Tamrin Tamrin