SETBACK TABLE
S12, R12 & V12 Setback Tables & Friction Co-Efficients
| Wall Angle β | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 |
| Setback mm | 184 | 154 | 127 | 103 | 80 | 59 | 39 | 19 |
Note: For the V12 Block:
A setback of less than 21mm allows soil to fall through the blocks
A setback of 63 mm is required to align concave & convex sections of the block
Coefficient of Friction (µ)
| S12 | R12 | V12 |
| 0.737324 | 0.688992 | 0.698587 |
Block Infill Information
| Units per m² | block mass kg | block infill volume m3 | mass of wall
including soil kg/m² |
|
| S12 Smoothface | 12 | 27 | 0.0132 | 549 |
| R12 Rockface | 12 | 28 | 0.0132 | 561 |
| V12 Versatileface | 12 | 22 | 0.0095 | 428 |