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... PUMP IN FOUNDATION PIT Construction methods for foundation pit Bottom foundation treatment Concreting spread footing Fill up the foundation pit Organize spread footing construction Requirements:... FOOTING Construction methods for foundation pit Bottom foundation treatment Concreting spread footing Fill up the foundation pit Organize spread footing construction Requirements: After the foundation. .. Hầm CHAPTER IIIa – CONSTRUCTION OF THE SPREAD FOOTING ON NATURAL GROUND Trường Đại học Giao thông Vận tải Bộ môn Cầu Hầm MAIN CONTENTS Construction methods for foundation pit Bottom foundation