STUDI PERENCANAAN STRUKTUR BAWAH PADA JEMBATAN CH JETAK BOJONEGORO

The Callender-Hamilton bridge is a type of prefabricated truss bridge that is modularly designed from mild steel components and can be installed quickly. Jetak Bridge is one of the Callender Hamilton bridges located on Jl. MT. Haryono No.18, Jetak, Kec. Bojonegoro, Bojonegoro Regency, East Java. The Jetak Bridge is 50 m long and 18.5 m wide. The purpose and purpose of planning the lower structure of the Jetak Bojonegoro bridge is to find out how much the upper structure load is received by the bridge foundation and also plan the foundation dimensions that can withstand the weight of the upper structure of the Bojonegoro Jetak bridge. The largest vertical load received by Abutment is during condition VIII which is 1104.05 tons. The bridge abutment is planned with a height of 10 meters using breast wall dimensions of 18.5 meters x 1.5 meters and for pile cap dimensions of 19 meters x 6 meters with a height of 2 meters. And the amount of decline caused by the structure at the top is 8.48 cm in a period of 25 years.