| Convention | Description |
|---|---|
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→ Typical dimension line showing QS. customary units (in inches) above the line and SI units (in millimeters) below → Dimensions for short distances indicated on extended line → Dimension line showing alternate dimensions required → Direction of approach → Maximum → Minimum → Boundary of dear floor area → Centerline |
(“ Standards for Accessible Design”, 28 CFR 36 Appendix D)



