<![CDATA[The construction of the main irrigation area structures requires precise technical planning as well as cost and time analysis to support the effectiveness and efficiency of the construction implementation. In the Kedung Lawang, Banyuwangi Regency, the construction of the main structures is planned to support the fulfillment of irrigation water needs in the downstream of the Irrigation Area. Therefore, an analysis of the main building planning is needed, considering technical aspects, selection of alternative materials, construction cost requirements, and the duration of the work implementation. This research aims to analyze the planning of the main building and examine the cost and time requirements based on the specified planning alternatives. The research method uses a quantitative descriptive approach by utilizing primary and secondary data. Cost analysis is conducted through the calculation of work volume, AHSP, and the preparation of the Bill of Quantity. Time analysis is carried out by considering productivity, the duration of each task, and the interrelationships between activities to develop the implementation schedule. The expected outcome of this research is to obtain the cost and duration requirements from the planning so that can be identified to be more efficient without reducing the function, quality, and technical requirements of the building. This research is expected to be as a consideration for planners and the government in determining economical and effective planning alternatives for the main structures of the Kedung Lawang Irrigation Area.]]>
