Workflow as suggested by takashi
Result of workflow as suggested by takashi Aggregator and coercer do not reduce number of composite surfaces
Dissolving by rotating addition to takashi workflow Extract bounds Coerce to polygon Rotate vertical to horizontal Dissolve Rotate back Face replacer Split surfaces per orientation Split by vertical north-south, vertical east-west and horizontal and dissolve per plane and formation
Dissolving by rotating addition to takashi workflow Dissolver removed lots of surface parts but also creates this strange surface representation
Dissolving by rotating addition to takashi workflow Face replacer output vertical east-west planes
Dissolving by rotating addition to takashi workflow Face replacer output vertical east-west planes and vertical north-south
Dissolving by rotating addition to takashi workflow Face replacer output vertical east-west planes and vertical north-south and horizontal