ABSTRACT Mangrove forests typically grow along coastlines and play a crucial role in protecting coastal areas from sea water-induced abrasion. Rangsang Island is located in a coastal region directly facing the Malacca Strait, making it vulnerable to coastal abrasion and shoreline changes. Google Earth Engine (GEE) is a platform that facilitates research related to shoreline changes caused …
ABSTRACT This study aims to evaluate the reliability of the SPI-3 (Standardized Precipitation Index) generated by Google Earth Engine (GEE) by comparing it with manual calculations using Microsoft Excel, as well as to analyze the correlation between SPI-3 and hotspot occurrences. SPI-3 monitoring is conducted due to the high fire susceptibility of peatlands during drought conditions, highl…
This study investigates the effectiveness of combining the Snyder Synthetic Unit Hydrograph (SUH) with three flood hydrograph models—Alexeyev, Gama I, and Nakayasu—in estimating High Direct Runoff (HDRO) across six sub-watersheds located in the southern region of the Siak River Basin, Pekanbaru City, Indonesia. The methodology integrates watershed characterization using Geographic Info…
ABSTRACT Unpredictable earthquakes have a major impact on structures, especially without bracing which has low strength against seismic forces. This study aims to analyze the effect of bracing on the natural frequency and dynamic response of SDOF and MDOF structures using the time history method. The dimensions of the structural system modeling refer to data from previous laboratory studie…
ABSTRACT The University of Riau campus area frequently experiences inundation during the rainy season, highlighting the need for effective and sustainable flood mitigation strategies. This study aims to model the hydraulic system of interconnected lakes within the campus area to optimize water retention capacity and reduce flood risk. Data collection included topographic, rainfall, and oth…
ABSTRACT The number and location of rain stations is important in the accuracy of rainfall data in an area. This study examines the density of existing rain stations based on World Meteorological Organization (WMO) standards and rationalizes the number and distribution pattern of rain stations using the Kagan-Rodda method. This method analyzes the variation in error rates in the context of the…
ABSTRACT Testing on a large scale is challenging, so a building structure modeling is applied to a shaking table as a source of vibration media. Building structures that experiencevibrationsdueto earthquakesorwind can cause significantdeformation or even collapse. This study aims to analyze the effect of bracing on the response of SDOF and MDOF structures due to horizontal vibration loads. Thi…
ABSTRAK Online transportation is a form of application-based technological development that received a positive response when it was first introduced, because it is considered the best innovation of our time. The existence of transportation makes it easier to move people and goods from one location to another. One of the online transportation services currently operating in the field of go…
ABSTRACT Accidents are one of the problems that often occur on the highway, which can cause huge losses to society. Due to the large losses caused by accidents, special studies are needed in determining accident-prone locations and handling accidents in the future. In this study, a case was taken on the Kuok - Rantau Berangin road section. Secondary data in the form of completed reports obtain…
ABSTRACT This study aims to evaluate the condition of pedestrian pathways in the Educational and Office Area of Gobah, Pekanbaru, using the Global Walkability Index (GWI) method. This method assesses walkability levels based on nine parameters, including conflicts with other modes of transportation, availability of pedestrian facilities, crossing safety, and supporting infrastructure. The …
ABSTRACT This study aims to evaluate the effectiveness of Weather Modification Technology (WMT) in influencing rainfall, hotspots, burned area, and drought index in Ketapang Regency, West Kalimantan, over the period 2019–2023. The data utilized in this study include rainfall data from CHIRPS, hotspot data from NASA’s FIRMS system, burned area assessed using the Differenced Normalized B…
ABSTRACT Tidal floods are floods caused by rising sea water, where the rise is higher than the shoreline or land. The tidal floods that occurred in Dumai City caused considerable losses. Tidal floods not only inundate residential areas but also inundate roads, causing disruption to residents' activities in industrial movements. This study aims to simulate the drainage network using EPA SWM…
ABSTRACT In project implementation, it is essential for us to understand project performance to anticipate and monitor whether the project is progressing as planned. The purpose of this study is to calculate the performance index in terms of project cost and time, as well as to estimate the cost and time required to complete an ongoing project using the Earned Value Concept method. The results…
ABSTRACT The Physical Development Work Project CWR-01 AKSI ADB UNRI Integrated Laboratory Building at the end of the project in October 2023 had a progress of 61.483%, it should have been planned to be 100% so that there was a deviation of 38.517%, so it is necessary to identify the risk of delay. The purpose of this study was to identify risk factors for delay based on literature studies, det…
ABSTRACT The Batang Dareh Bulakan Reservoir in Limbukan Village, South Payakumbuh Subdistrict, Payakumbuh City is a crucial infrastructure for water resources management in the region. This research aims to evaluate the performance of the reservoir using the Likert scale method. The assessment stages refer to Circular Letter of the Directorate General of Water Resources Number SE/D/2017, …
ABSTRACT Langgam Intersection is one of the signalized intersections located in Pangkalan Kerinci City, Riau Province. This study analyzes the impact of widening the legs of Langgam Intersection in Pangkalan Kerinci City on the performance of the signalized intersection. This intersection experiences high traffic volumes, particularly heavy vehicles, resulting from industrial activities in the…
ABTRACT The Kampar River is a river that originates in the Bukit Barisan around West Sumatra and empties into the east coast of Sumatra Island in the Riau Province. The Kampar River is a natural resource that is widely used for the needs of the population such as fisheries cultivation, tourist attractions, livelihoods, irrigation, residential areas and others. This study aims to detect and ana…
ABSTRACT Mangrove forests are vital ecosystems that protect coastlines from erosion and support biodiversity. However, damage caused by human activities and natural phenomena has led to the degradation of these ecosystems. This study aims to analyze the changes in the coastline and mangrove forest degradation in Pulau Bengkalis spatially and temporally during the period 1994-2024. This analysi…