Surface Enrichment
Postulate. The design should conform to the limitations and requirements of tools, processes, and materials, and should be durable and suitable for service.
Rule 6a. Surfaces to be enriched must admit of enrichment.
Rule 6b. Surface enrichment must be related to the structural contours but must not obscure the actual structure.
Rule 6c. The treatment must be appropriate to the material.
Continuous Bands and Borders for Partly Enriched Surfaces
Rule 6d. Bands and borders should have a consistent lateral, that is, onward movement.
Rule 6e. Bands and borders should never have a prominent contrary motion, opposed to the main forward movement.
Rule 6f. All component parts of a border should move in unison with the main movement of the border.
Rule 6g. Each component part of a border should be strongly dynamic and, if possible, partake of the main movements of the border.