Infilling-material formation frame device and method of positioning civil-engineering work bag

An infilling-material formation frame device for putting infilling material into a civil-engineering work bag made of knitted fabric, the infilling-material formation frame device comprising:

• a frame body having a shape tapered inversely toward an upper opening thereof opened upward;
• and
• a plurality of overhang handles protruding from an outer circumferential surface of the frame body, and configured to position the civil-engineering work bag and to provide a footstep for a worker;
• wherein each of the plurality of overhang handles has a size larger than a mesh size of the knitted fabric of the civil-engineering work bag to such an extent that the civil-engineering work bag is not hooked on the plurality of overhang handles;
• wherein the plurality of overhang handles are arranged such that, when an upper half of the civil-engineering work bag accommodated within an interior of the frame body hangs down over an exterior of the frame body, a temporarily-tightening rope arranged around the civil-engineering work bag can be tightened below the plurality of overhang handles thereby positioning the civil-engineering work bag;
• and
• wherein each of the plurality of overhang handles includes a bottom face forming a latch for the temporarily-tightening rope and an upper face for the worker to step on.