Appendix C 5.5 Seal Design
A summary of the seal design is provided in Table C 7.
Table C 7: Design calculations
| Attribute | Symbol | Units | 10 mm reseal |
|---|---|---|---|
| Traffic | – | AADT | 250 |
| Design traffic | – | v/l/d | 2135 |
| Basic voids factor | Vf | – | 0.15 (Figure 6.2) |
Adjustments: Aggregate shape Traffic effects Other | Va Vt – | L/m²/mm L/m²/mm L/m²/mm | Nil (Table 6.1) Nil (Table 6.2) Nil |
| Design voids factor Vf + Va + Vt | VF | L/m²/mm | 0.15 |
| ALD of aggregate | ALD | mm | 8.9 |
| Basic binder rate VF × ALD | Bb | L/m² | 0.15 × 8.9 = 1.34 |
| Binder factor | BF | – | 1.1 (Table 6.4) |
| Modified binder rate | Bbm | L/m² | 1.34 × 1.1 = 1.47 |
Allowances: Surface texture Binder Abs. by Agg. Binder Abs. by Pav. Embedment | Ast Aba Ap Ae | L/m² L/m² L/m² L/m² | +0.2 (Section 6.2.2) Nil (Section 6.2.4) Nil (Section 6.2.4) –0.1 (Figure 6.5) |
| Design binder rate Bbm + Ast + Aba + Ae | Bd | L/m² | 1.47 + 0.2 – 0.1 = 1.57 adopt 1.6 |
| Aggregate spread rate | – | m2/m3 | 900/ALD = 101.1 Adopt 100 |