A Structural Dimension Survey is crucial for constructing precise numerical models used in finite element analysis. The foundation for creating these models entails obtaining 3D layouts and the cross-sectional dimensions of each structural member. Two pivotal tools utilized for this purpose are LiDAR and the Impact Echo machine. LiDAR technology empowers engineers to capture geometry through 3D point cloud data, providing valuable information about shapes, dimensions, and orientations in structures such as buildings, factories, and bridges. It encompasses critical parameters, including bay spacing, span lengths, and overall height, depth, and breadth of structural members. Additionally, Impact Echo Testing enables the non-destructive determination of concrete slab and wall thickness using acoustic waves. This comprehensive approach ensures that engineers possess the necessary information for accurately modeling and analyzing structures during the structural assessment process.