Brighton sits on a chalk bedrock that drains fast but crumbles under repeated wet-dry cycles. The sea spray along the A259 and the salt-laden air from the English Channel accelerate asphalt stripping and binder oxidation. A flexible pavement design in Brighton has to account for this aggressive microclimate, not just traffic loads. We model granular subbase layers that work with the chalk's high permeability, preventing water from pooling at the formation level. The CBR road investigation provides the stiffness input that defines layer thicknesses, ensuring the pavement withstands both the seasonal tourist influx on the seafront and the constant bus traffic through the North Laine. Without a site-specific design, you risk premature fatigue cracking within the first five years.
A flexible pavement on Brighton's chalk must handle rapid drainage and salt attack simultaneously; the subbase design makes or breaks the whole section.
