Ciria Report 108 Concrete Pressure On Formwork Jun 2026
| Method | Formula | Result (kN/m²) | Tie spacing @ 300kN capacity | Cost implication | | :--- | :--- | :--- | :--- | :--- | | | 23.5 x H | 70.5 kN/m² | Ties @ 0.9m x 0.9m | High (more ties, larger walers) | | CIRIA 108 | 11.4 + (785x3)/(15+17.8) | 11.4 + 71.7 = 83.1 kN/m² | Ties @ 0.85m x 0.85m | Wait—this is HIGHER? |
The report dedicates significant text to modifying factors. As a designer, you must adjust R and T based on: ciria report 108 concrete pressure on formwork
Engineers rarely carry the original 120-page document. However, you can apply its logic in three steps: | Method | Formula | Result (kN/m²) |
But 83.2 > 70.5 (hydrostatic). Therefore, the CIRIA formula says: . So you take 70.5 kN/m². However, you can apply its logic in three steps: But 83
No model is perfect. CIRIA 108 has known blind spots: