THE EFFECT OF PAVING BLOCK SHAPE ON INFILTRATION PARAMETERS PHI-INDEX AT VARIOUS SLOPE CONDITIONS (LABORATORY TEST USING RAINFALL SIMULATOR)

• Main Author: Elva Nirmala, Peggy
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/57047
• Institution: Institut Teknologi Bandung

The reduction in water catchment areas due to the conversion of green open land causes the soil's infiltration capacity to decrease. This condition causes the water that is not absorbed will become surface runoff. Surface runoff that occurs on impermeable surfaces requires the discovery of new ways to manage water flow, especially from rainwater. To reduce impermeable surfaces such as pavements, driveways, parking lots, and other places, paving blocks are used to reduce runoff and increase infiltration. The scope of the research is infiltration testing using three shapes of paving blocks by conducting laboratory tests using a rainfall simulator. Meanwhile, the purpose of this study was to determine the effect of the physical shape of paving blocks on infiltration parameters, especially ? index, and determine the most efficient paving block geometry in reducing runoff under various slope conditions. Paving blocks used are rectangular paving blocks, hexagons, and grass blocks with variations in land slope of 0%, 5%, 10%, and 15%. The results showed that grass blocks produced the largest ? index on each slope, followed by hexagon paving blocks, and the smallest was rectangular paving blocks. In addition, there is a relationship between the infiltration rate value and the slope of the land which is inversely proportional, where the greater the slope, the smaller the infiltration rate value. The application of paving blocks to the drainage design can also reduce the discharge and dimensions of the channel.