Analisis efisiensi kombinasi alat berat dalam pekerjaan normalisasi sungai dan waduk di DKI Jakarta. Studi kasus perencanaan Jakarta urgent flood mitigation project (JUFMP) jakarta emergency dredging initiative (JEDI) = Efficiency of heavy equipment combination analysis on normalization rivers and reservoirs in DKI Jakarta. Study case jakarta urgent flood mitigation project (JUMP) plan Jakarta emergency dredging initiative (JEDI)