Laser Scan Survey | Vaults beneath Clifton Suspension Bridge | Bristol
A 3D Survey Bristol beneath Isambard Kingdom Brunel’s Clifton Suspension Bridge to map the dimensions and integrity of the Victorian Brick Arches. Two surveyors with confined space training and portable terrestrial Laser scanners mapped the site in less than 4 hours using access hoist equipment and portable lighting to move between the chambers and map the tunnel networks.
Working alongside Bill Harvey Associates the scan data was combined with photogrammetry to obtain a surface meshed model of the vault that could then be analysed for deformation.
Laser scanning is the best way to map hard to access areas and minimises the risk to staff and equipment as the range of the scanners means measurements can be easily obtained from a ground position. The light conditions were poor for colour scanning but individual masonry elements can be easily picked out using intensity settings.