Surface Enrichment of Base and Precious Metals For Large Primary Masses
Rule 11a. The preliminary steps toward surface enrichment should be thought out before they are drawn.
Rule 11b. Conservative application should mark the use of surface enrichment of large masses. Its use should: (1) lighten or soften necessarily heavy construction; (2) support or apparently strengthen good structure; (3) add interest to large unbroken and uninteresting surfaces.
Rule 11c. The type of design unit for large masses should be bolder than similar designs for small primary masses.
Rule 11d. The eye should be attracted to one principal zone of enrichment, whether located upon the primary mass, appendage, terminal, links, or details. All other zones should be subordinate to this area.
Rule 11e. Two periods of historic ornament should not be introduced into the same design.
Rule 11f. Repulsive forms should not be introduced into surface enrichment.
Application of Color To Large Areas
VALUES
Rule 12a. An average wood stain is to be retained between the values middle and low dark.
Rule 12b. An average wall hue is to be retained between the values light and middle.
Rule 12c. An average ceiling hue is to be retained between the values white (minus) and light.
Rule 12d. The relation between the side walls and furniture, trim, etc., should be retained within the range of four values or less, as low light and dark.
Rule 12e. The relation between the side walls and ceiling should be within the range of three values or less, as high light and low light.