Runoff Behavior on Urban Road Intersection based on Flow Profile Simulation

Abstract

Abstract:There have been various technologies developed to solve the inundation problem that occurs in almost all urban areas. Some of these technologies, such as low impact development (LID), are developed through the concept of source control. The first step of LID practice is to know the runoff behavior on a certain surface of an area, following that, the LID practice is then designed.One of the objectives of LID is to decrease inundation depth on the road. This study aims to learn the profile and behavior of storm water flow along roads before they reach an intersection of a road system in Purwantoro region, Malang City, Indonesia. The study design consisted of field measurements and analytical activities as follows: determination of the independent and dependent variables; field measurements and data collection; simulation of flow profiles with various return periods of rainfall using Hydraulic Simulation Model HEC-RAS ver. 4.1; and verification of the simulation result of flow profiles using observation data. This research concluded that slopes on the branch road and runoff discharge on the main road significantly influenced flow depth at the road intersection. The relationship was expressed by power equations. In contrast, the runoff velocity at the branch road was more influenced by the discharge on the branch road and the main road, and the relationship followed a linear equation. A further study is required to decrease the runoff discharge on the road using LID technology such as concrete block pavement as a replacement for asphalt pavement.

Corporate Social Responsibility (CSR) Model in Improving the Quality of Green Open Space (GOS) to Create a Livable City

“…Success in improving the quality of social space will contribute to the provision of community social space, space for social interaction, space for relaxation, and sports that are important for improving people's physical and spiritual health. Improved urban areas' ecological functions will contribute to biodiversity and animals, improve the quality of the microclimate of the city/region, air purification, groundwater conservation efforts, and increase rainwater absorption by reducing surface runoff rates [32]. It is significant for the improvement of urban ecosystems.…”

“…Development of the concept of sustainable city development requires an integrated approach to achieve harmony in planning, design, implementation, and control. Sustainable urban development through the provision of adequate green space will affect reducing urban heat [47,48], offsetting greenhouse gas emissions [16,[49][50][51], and increasing urban groundwater content [52]. The rapid increase in the city center's human activity has contributed significantly to increased carbon gas emissions [16,[49][50][51].…”

Assessment of Inclusive Historical Public Spaces in achieving preservation of such areas in Malang, Indonesia

“…As IHPS, those public spaces are sufficient to provide comfortable use and have been utilized optimally by the community. However, it also needs to be considered that congestion of activity, particularly in public spaces close to intersections, remains problematic (Sedyowati, Suhartanto, & Sholichin, 2018).…”

The Spatial Pattern of a Kampong Area in Malang City using a Space Syntax Approach

“…It is vital to understand Indonesian kampong patterns to get a fundamental understanding about kampongs to facilitate sustainable urban form. Many research works on sustainable development from different urban perspectives have been conducted, including topics such as economics and politics (Rodríguez-Alegría, Millhauser, & Stoner, 2013;Yi & Ryu, 2015), as well as sustainable development in metropolises, given the impacts of urbanisation (Firman, 1999(Firman, , 2009Tutuko & Shen, 2016;Sedyowati, Suhartanto, & Sholichin, 2018;Tutuko, Subagijo, & Aini, 2018;Wikantiyoso et al, 2020;Wikantiyoso et al, 2021). This approach uses the calculation of depth on the justified graph, which is usually done to determine the relationship hierarchy within the space syntax method.…”