Ciria Report — 108 Concrete Pressure On Formwork Patched

Importantly, the report states that pressure never exceeds the (ρgh ≈ 24 × height in kN/m²), and it sets a minimum pressure for low rates or high temperatures.

Published in 1985, CIRIA Report 108 (R108) serves as a primary industry standard for calculating the lateral pressure of fresh concrete on formwork. The report provides an empirical formula to determine maximum pressure based on variables like concrete density, rate of rise, and temperature, which remains relevant for ensuring safe, cost-effective formwork design. For full details, visit CIRIA . Concrete pressure on formwork (R108) - CIRIA ciria report 108 concrete pressure on formwork

Research (including later CIRIA updates) shows that for SCC, the coefficient (1.2) is insufficient. SCC can maintain fluid-like behavior for longer, leading to near-hydrostatic pressures. Importantly, the report states that pressure never exceeds