NIST Construction Automation Program Report No. 4: Non-Instrusive ScanningTechnology for Construction Status Determination

摘要

Approximately 2% of all construction work must be devoted to manually intensivequality control and tracking of work completion, including operations involving earthmoving and bulk materials handling. One of the more difficult things to track at a construction site is the geometry of things that are not neatly classified as 'components'. Amorphous data include such things as the state of excavation of terrain, the presence of new materials (e.g., sand, gravel) depots; the location and extent of spoil piles; progress of a concrete casting; highway alignment; paving operations; etc. The objectives of the project are to utilize new scanning technologies to improve critical construction status assessment needs by making these measurements faster and cheaper than traditional methods and to develop, in conjunction with industry, standard means for transmission and interpretation of such data. It focuses on the development of an integrated software and wireless remote sensing system that will accept input from a variety of high speed automated ranging sensors and create a 3D model of the present state of a portion of a construction site. This report details the initial activities in the project and documents procedures used to acquire and display data obtained from a scanner and to perform simple volume calculations.