210-215 K KAJIAN PEMANFAATAN PEMANENAN AIR HUJAN PADA FLY OVER SEBAGAI ALTERNATIF SUMBER AIR PERTAMANAN KOTA MENGGUNAKAN PENDEKATAN KONSEP ECO-DRAINASE

KAJIAN PEMANFAATAN PEMANENAN AIR HUJAN PADA FLY OVER SEBAGAI ALTERNATIF SUMBER AIR PERTAMANAN KOTA MENGGUNAKAN PENDEKATAN KONSEP ECO-DRAINASE

Abstract

The average value of the free aquifers in Pekanbaru City continues to increase that marked increase in
subsidence of groundwater impacted difficulty gaining ground water. Sourced from the Department of Public
Works and Spatial Planning Pekanbaru city that watering park in Pekanbaru cityused reservoir water from
well located in Pekanbaru City Forest, Diponegoro Street, Sail District, Pekanbaru. The water is standard
water for the provision of clean water. Therefore, it is necessary to find an alternative water source that can
be used for watering City Park. One of them is rainwater. All this time, rainwater only allowed wasted and
underused. Though rain water can be used for watering plants. Rain water can be use by rainwater harvesting
technology. In this study conducted a study on the utilization of rainwater harvesting at the Fly Over Bridge
at intersection of Jenderal Sudirman Street and Tuanku Tambusai Street Pekanbaru City as an alternative
water source for City Park. To find the rainwater harvesting donation, design and cost budget plan, do
calculation and analysis. Supported by the software of Analysis Frequency and RainCycle Standard v2.0
program, the optimum container size measurement result that can be built is 385 m3
which will be divided
into 7 container tubs with each size is 55 m3
or dimension Length : Width : Height that is 16.22 m : 4 m : 1
m. And the large contribution of rainwater harvesting produced is 19% of 120 m3
or 22.8 m3
everyday if not
raining and at least 7.7% of 120 m3
or 9.24 m3
everyday if not raining.