import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-100))
w1=cq.Workplane('YZ',origin=(-57,0,0))
r=w0.workplane(offset=131/2).moveTo(-34.5,6).box(109,54,131).union(w1.workplane(offset=146/2).moveTo(-3,70).cylinder(146,30))