If you are researching, designing, or studying , the Time-Saver Standards for Housing and Residential Development (edition current at that time) is an authoritative source. Look for the 2nd edition (1995) or a 1990 reprint of the 1st edition . The “90 upd” likely refers to code updates from that period — especially accessibility and fire safety.
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. If you are researching, designing, or studying ,
The implementation of Time Saver Standards offers several benefits, including: If you have searched for the you are
| | Best for | Cost | | :--- | :--- | :--- | | Architect's Studio Companion (Allen & Iano) | Rules of thumb similar to Time Saver | $70 (book) | | IRC 2024 (International Residential Code) | Legal minimum dimensions | Free online view | | Graphic Standards (12th Edition) | Updated residential graphics | $150+ | If you locate a verified copy (check academic
: Covers population levels for urban activities, street classification, and types of planning units (e.g., superblocks).
If you locate a verified copy (check academic databases like Internet Archive or university repository lending), use this workflow: