Open a new part and open a sketch on the Front plane.
Click Line
(Sketch toolbar),
and coincident with the origin, sketch the figure using inference as you
sketch to create the relations.
Create the crane base and make a block.
Open a new part and open a sketch on the Front plane.
Click Line
(Sketch toolbar),
and coincident with the origin, sketch the figure using inference as you
sketch to create the relations.
Click Smart Dimension
(Dimensions/Relations
toolbar), add dimensions to fully define the sketch, and then click 
.
Click Make Blocks
(Blocks toolbar).
Box-select the sketch entities for Block Entities.
Click and leave the sketch open.
The crane base is listed as 
Block1-1 in the FeatureManager
design tree.
