Convert Hoppus tons to Petrograd standards
Convert Hoppus tons (H ton) to Petrograd standards (Pet. std) instantly and accurately.
Conversion Formula
Pet. std = H ton × 0.2379994435
About Hoppus tons
The Hoppus ton (H ton) = 50 Hoppus feet = 50 × (Ο€/4) ft³ ≈ 1.112 m³. The '50' approximated one ton of tropical hardwood by weight (teak/mahogany at 700-900 kg/m³ × 1.112 m³ ≈ 0.9 metric ton). Standard for British colonial timber imports - teak from Burma, iroko from West Africa, meranti from SE Asia. Superseded by m³ after metrication. 1 H ton = 50 H ft ≈ 1.112 m³.
About Petrograd standards
The Petrograd standard (St Petersburg standard) = 165 ft³ = 4.6723 m³, representing 120 pieces of dressed Baltic softwood 12 ft × 11 in × 1.5 in = 165 ft³ exactly. Dominated 18th-19th century Baltic-to-Britain sawn-timber export trade from St Petersburg, Riga, and Danzig. Replaced by m³ in UK trade during 1970s metrication. 1 Petrograd standard = 165 ft³ = 4.6723 m³ ≈ 1,980 bf.
Quick Reference Table
| Hoppus tons (H ton) | Petrograd standards (Pet. std) |
|---|---|
| 1 H ton | 0.237999 Pet. std |
| 2 H ton | 0.475999 Pet. std |
| 5 H ton | 1.19 Pet. std |
| 10 H ton | 2.37999 Pet. std |
| 25 H ton | 5.94999 Pet. std |
| 50 H ton | 11.9 Pet. std |
| 100 H ton | 23.7999 Pet. std |