Ciria Report 108 Concrete Pressure On Formwork !link! ✰

For further reading, obtain the original CIRIA Report 108 (now available as a digital reprint) and pair it with the latest EN 12812 or ACI 347 updates. But remember: the principles of pressure vs. setting time, rate, and temperature—first clarified in CIRIA 108—are timeless.

#ConcreteConstruction #Formwork #CivilEngineering #CIRIA108 #ConstructionSafety #ConcretePressure ciria report 108 concrete pressure on formwork

Over the years, engineers have applied CIRIA Report 108 to a wide range of conditions. The report explicitly addresses several modifiers: For further reading, obtain the original CIRIA Report

Most contractors take E from a concrete test certificate done at 20°C. If your pour is at 10°C, E might be 3x longer. Always adjust E for ambient and concrete temperature. A 5°C drop can double E. Always adjust E for ambient and concrete temperature

Before Report 108, formwork designers relied on empirical rules-of-thumb or overly conservative hydrostatic pressure models. The hydrostatic assumption—that fresh concrete behaves exactly like a liquid (pressure = density × height)—led to massively over-engineered (and expensive) formwork. Conversely, simplified rules like "pressure = 1.5 × height" often proved unsafe for high-slump, fast-pouring conditions.