<![CDATA[This research aims to (1) determine the condition of the existing foundation of Ngadi Bridge, (2) design an effective and efficient bored pile for Ngadi Bridge, (3) analyze the ration of the concrete’s volume required for the existing foundation to the redesigned foundation (bored pile) of Ngadi Bridge. This research is the level 1 of Sugiyono’s Research and Development with a mixed method approach. There are two findings established in this research. First, the implementation of existing foundation on Ngadi Bridge caused vibration and noise, and too many foundations in each abutment and pillar caused the need of concrete volume to be increased until 216,14 m3. Second, the bored pile design on Ngadi Bridge for Abutment 1 uses 12 bored piles with diameter of 0,6 m and depth of 15 m. The resulting group carrying capacity is 24501,99 kN. For Abutment 2 uses 6 bored piles with diameter of 0,6 m, depth of 10 m, and the resulting group carrying capacity is 9068,82 kN. While Pillar uses 35 bored piles with diameter of 0,6 m, depth of 4 m, and the resulting group carrying capacity is 22430,43 kN. Third, the total concrete volume of bored pile needs 107,4425 m3. So that the percentage of saving the required volume of concrete is 50,29%.]]>
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