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All Journal Journal of Innovative and Creativity
almukarom, suudi
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Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Analisis Desain Dan Konstruksi Jembatan Ngargosari Berbasis Investigasi Geoteknik Di Kabupaten Boyolali almukarom, suudi
Journal of Innovative and Creativity Vol. 6 No. 1 (2026)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v6i1.6806

Abstract

The Ngargosari Bridge is a strategic infrastructure connecting Kiringan-Ngargosari in Ampel District, Boyolali Regency. This research analyzes the design and construction of a bridge with a total span of 30 meters (12m + 18m) based on comprehensive geotechnical investigation. Research methods include cone penetration tests at 4 location points, soil bearing capacity analysis, and structural design using a combination of reinforced concrete and steel. Investigation results show variations in hard soil depth between 1.2-4.2 meters with qc values reaching 180 kg/cm² in cohesive soil consisting of volcanic sandy clay. Structural design employs T-beam girders (40x80 cm) for the 12-meter span and IWF 600.200.11.17 steel profiles for the 18-meter span, with foundations adapted to local soil conditions. Material specifications include concrete grades fc’ 10-25 MPa and BjTS 420B reinforcing steel according to SNI standards. This research provides practical contributions to geotechnical data-based bridge design for volcanic soil conditions in Indonesia.
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