Step 7#
Refer to Standard Drawings listed in Appendix C for details of fabrication and erection.
Table B.1 – Stiffener type and number of supports
| Option | Panel stiffener type | No. of supports | Maximum sign width | Region A | Region B | Region C |
|---|---|---|---|---|---|---|
| Option 1 – Minimum no. of supports; standard support spacing¹ | Type 1 | 2 | Maximum sign width | 3.5m | 3.0m | 2.5m |
| Option 1 – Minimum no. of supports; standard support spacing¹ | Type 2a | 2 | Maximum sign width | 5.5m | 5.0m | 4.5m |
| Option 1 – Minimum no. of supports; standard support spacing¹ | Type 2a | 3 | Maximum sign width | 7.3m | 6.7m | 6.0m |
| Option 2 – Additional support; standard support spacing | Type 1 | 3 | Maximum sign width² (standing support spacing¹) | 4.7m | 4.0m | 3.3m |
| Option 2 – Additional support; standard support spacing | Type 2a | 4 | Maximum sign width² (standing support spacing¹) | 8.0m | 8.0m | 8.0m |
| Option 2 – Additional support; standard support spacing | Type 1 | 4 | Maximum sign width² (standing support spacing¹) | 6.3m | 5.4m | 4.4m |
| Option 3 – Minimum 10% sign overhang | Type 1 | 2 | Maximum sign width (10% sign overhang) | 2.0m | 1.7m | 1.5m |
| Option 3 – Minimum 10% sign overhang | Type 2 | 2 | Maximum sign width (10% sign overhang) | 3.3m | 2.8m | 2.5m |
¹Support spacing may be reduced for signs of width less than tabulated limits provided maximum stiffener overhang specified in Table B.2 following are not exceeded.
² Sign width limited to 8.0m maximum.
Table B.2 – Maximum stiffener overhang
| Panel stiffener type | Maximum stiffener overhang | Region A | Region B | Region C |
|---|---|---|---|---|
| Type 1 | Maximum stiffener overhang | 0.7m | 0.6m | 0.5m |
| Type 2 | Maximum stiffener overhang | 1.1m | 1.0m | 0.9m |
Table B.3 – Number of panel stiffeners
| Sign height, B (m) | No. of stiffeners (Max. stiffener spacing 500m Max. sign panel overhang 150mm) |
|---|---|
| 0.75 | 2 |
| 1.2 | 3 |
| 1.8 | 4 |
| 2.25 | 5 |
| 2.7 | 6 |
| 3.3 | 7 |
| 3.75 | 8 |
| 3.9 | 9 |