The string is not an official McGraw-Hill edition code. It most likely refers to:
: Optimized for appliance placement and movement, usually 70–100 sq. ft.
: Standard dimensions for human figures, furniture clearances, and room sizes (e.g., bedrooms typically 100–150 sq ft).
The title is accurate. In the early stages of a project (Charrette or Concept Phase), you do not want to calculate wheel turning radii from scratch. This book provides the "standard" instantly, allowing the designer to focus on the creative arrangement of spaces rather than reinventing the wheel regarding dimensions.
If you have searched for the you are likely looking for the critical 1990 updated edition—a legendary revision that redefined post-industrial residential design. This article explains what that document contains, why the "90 upd" is historically significant, how it differs from modern codes (like IRC and ADA), and where this data remains applicable in 2026.