Resources
Box Culvert Dimensions and Standard Types
The Turkish highway authority (KGM) published standard box culvert drawings in 2012, defining dimensions, reinforcement and wing wall details. They remain the basis of most tenders and align closely with common international practice.
Standard types — clear span × height
Clear spans and heights are 1.00 / 1.50 / 2.00 / 2.50 / 3.00 m. Highlighted types fall within the confirmed MenfeX standard range.
| Height ↓ / Clear span → | 1.00 m | 1.50 m | 2.00 m | 2.50 m | 3.00 m |
|---|---|---|---|---|---|
| 1.00 m | 1×1 | 1.5×1 | 2×1 | 2.5×1 | 3×1 |
| 1.50 m | 1×1.5 | 1.5×1.5 | 2×1.5 | 2.5×1.5 | 3×1.5 |
| 2.00 m | 1×2 | 1.5×2 | 2×2 | 2.5×2 | 3×2 |
| 2.50 m | 1×2.5 | 1.5×2.5 | 2×2.5 | 2.5×2.5 | 3×2.5 |
| 3.00 m | 1×3 | 1.5×3 | 2×3 | 2.5×3 | 3×3 |
Within the standard MenfeX range
Large single-cell types
- 4×4
- 4×5
- 5×5
- 6×5
- 6×6
- 7×5
- 7×6
- 8×5
- 8.5×5
- 8.5×6
- 9×5
- 9.5×5
- 9.5×6
Twin-cell types
- 2×(8×5)
- 2×(8×6)
- 2×(9×5)
- 2×(9×6)
Outside the standard MenfeX range — assessed project by project
Other design values
| Concrete class — cast-in-place | min. C25/30 |
|---|---|
| Concrete class — precast | C30/37 |
| Concrete cover | 50 mm |
| Pour block length (culverts over 12 m) | 6 m |
| Expansion joint | Required where total length exceeds 24 m |
| Curing | Min. 7 days wet curing in hot weather |
| Sulphate-bearing ground | Sulphate-resisting cement |
For information only. The governing standard drawings and the project specification take precedence.
Request a quote for your dimensions
Share the clear span and height in your project and we will work out the configuration.