- 1). Locate a steep incline or natural backstop in the landscape. The base of a hill is a common location for half pipe construction because the hill holds the structure and the flat bottom prevents the ramp from collapsing.
- 2). Pack the snow at the base of the hill, making a wide base that is tapered into the hill itself. The base is formed by packing the snow with shovels. In addition to using shovels, you can pack the snow down by stomping on it with your feet. As you build, keep in mind that the typical quarter pipe stands 4 to 6-feet tall. Make the flat top at least 2-feet wide for grinding and 4-feet wide for landing and stopping on the top. Be sure to make the tapered base so that it matches the height of the ramp.
- 3). Continue adding snow to the structure, building straight up from the base. Fill in against the hill as necessary in order to keep the structure intact. Be sure that you continue to pack the snow down as you build the ramp.
- 4). Stop when the ramp has reached the desired height. Hit the face of the ramp with shovels to pack the snow against the hill and to develop the inward curve. Stop when the snow is packed tight.
- 5). Step back and observe the ramp. Use the tip of a metal shovel to shave the ramp into the shape of a quarter pipe. The structure should be firm at this point and shaving will not cause it to collapse. Shave the ramp until the base of the curve is slightly concave. Also shave the top flat and create a squared edge for grinding.
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