Drawing Problems - Chapter 1 Drawing Problems - Chapter 15 Copyright Goodheart-Willcox Co., Inc. 416 AutoCAD and Its Applications—Advanced 2. Architectural In this problem, you will add overhead speakers to a point cloud of an amphitheater stage design. Refer to the model shown. The point cloud is shown with transparency applied for illustration purposes only. A. Copy the drawing Amphitheater Stage.dwg available on the companion website to a folder of your choice. Copy the file Amphitheater Stage.rcs to the same folder location. Open the drawing Amphitheater Stage.dwg. B. Use the Move and Align UCS icon origin grip menu option to move the UCS to the front face of the amphitheater roof. Use the Nearest plane of point cloud 3D object snap to select the face. C. Set the Speaker_Support layer current. Using the Nearest to edge of point cloud 3D object snap and the Axis endpoint option of the CYLINDER command, draw a 4-unit cylinder from the front bottom edge of the right side roof to the front bottom edge of the left side roof on the opposite end. D. Use the 3 Point UCS icon shortcut menu option to align the UCS with the right end of the cylinder. The X axis should be aligned with the center axis. Refer to the model shown. E. Set the Speakers layer current. Insert one instance of the Roof Speaker block. Use the Center of face 3D object snap to center the block along the cylindrical support. F. Use the Array option of the COPY command to make 5 copies of the speaker to the right and left. Spacing is 50 units. G. Save the drawing as P15-2. Speakers Cylindrical support UCS after using 3 Point option (Red Rocks Amphitheatre, City & County of Denver)