PURPOSE: To build up a slope frame according to the geographical features without use of formwork by a method in which a large number of slope frames, each of which is formed by fitting fixing short pipes to the corners of a polygonal frame made of such materials as round bars, etc., are fixed to the upside of a slope, a slope protecting material is placed in the slope frame, and concrete is placed between the slope frames.

CONSTITUTION: A polygonal (square or hexagonal) frame is formed of such materials 2 as round bars, etc., having a proper stiffness, and short pipes 3 are fixed to the corners of the polygonal frame to form a framework 1. A large number or the frameworks 1 are placed at a given interval on a slope, and anchor bolts 4 are thrust through the short pipes 3 to fix the formworks 1 to the slope 5. A slope protecting material 7 is placed in the inside of the framework 1, and concrete is placed between the adjacent frameworks to build up a slope frame 8. The slope frame can thus be simply formed according to the geographical features without the use of custom-made formwork and slope frame.