Ciria Report 108 Concrete Pressure On Formwork -

P_max = 1.2 × 24 × 2 × 2 = 115.2 kN/m²

For decades, engineers and contractors have relied on a single, authoritative document to navigate this risk: ciria report 108 concrete pressure on formwork

The theoretical maximum pressure concrete can exert is . This assumes the fresh concrete behaves exactly like a liquid; as the concrete is poured, the pressure increases linearly with depth ($P = \rho g h$). While safe, this approach is incredibly conservative. Designing formwork to withstand liquid pressure for a 10-meter pour requires heavy, expensive, and cumbersome falsework. P_max = 1

The key takeaway: