The report provides graphs and empirical relationships to determine this transition depth, typically 1–2 meters for ordinary concrete. Below the setting height, pressure is essentially constant.
Published by the Construction Industry Research and Information Association (CIRIA), Report 108 fundamentally changed how the industry calculates the lateral pressure exerted by fresh concrete. Even with the advent of Self-Compacting Concrete (SCC) and modern admixtures, the principles laid out in this 1985 report remain the industry benchmark. ciria report 108 concrete pressure on formwork
By trusting the CIRIA 108 calculation, they saved over £2 million in formwork costs and completed the walls safely and on schedule. The report provides graphs and empirical relationships to