Minimum fire main internal diameter per SOLAS II-2 Reg 10: d = 25 + 1.68·√(L·(B+D)).
Formula
$$ d = 25 + 1.68 \cdot \sqrt{L \cdot (B + D)} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $L$ | Rule length (≈ LBP) | m | class certificate |
| $B$ | Beam | m | class certificate |
| $D$ | Moulded depth | m | class certificate |
| $d$ | Fire-main internal diameter | mm | result |
Sources
- SOLAS II-2 Reg 10.