Below is a list of surface slopes found in the 2012 Texas Accessibility Standards (TAS).
| Ratio | Percentage | Relative Measurement | Sections Where Referenced: |
| 1:48 | 2.0% | 1/4″ per foot (actually 2.083%) | 304.2, 305.2, 403.3, 404.2.4.4, 405.3, 405.7.1, 502.4, 503.4, 504.4, 802.1.1, 810.2.4, 810.5.1, 1002.4.2, 1007.3.1, 1009.2.2, 1009.2.3, 1009.4.1, 1009.5.2, 1010.1 |
| 1:20 | 5.0% | 19/32″ per foot (actually 4.95%), or 5/8″ per foot (actually 5.2083%) | 106.5, 402.2, 403.3, 403.6, 406.2, 505.1, 505.6, 1007.2, 1007.3.2 |
| 1:16 | 6.25% | 3/4” per foot | 1008.2.5.1 |
| 1:12 | 8.33% | 1″ per foot, or 6” of rise per 6’ of run | 240.2.1, 405.2, Table 405.2, 406.4 |
| 1:10 | 10.0% | 5/16” per 3 “, or 5/8” per 6”, or 1-3/16″ per foot (actually 9.9%) | Table 405.2, 406.3 |
| 1:8 | 12.5% | 3/8” per 3”, or 1-1/2” per foot | Table 405.2, 1002.2 |
| 1:4 | 25% | 1/4″ per inch, or 1” per 4” | 1007.2 |
| 1:2 | 50% | 3/8” per 3/4”, or 1/2” per inch | 303.3, 404.2.5 |