Survey of Construction Metrology Options for AEC Industry

Lindfors, C.; Chang, Peter; Stone, William C.

doi:10.1061/(asce)0893-1321(1999)12:2(58)

Cited by 8 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Monitoring the status of construction activity is important issue facing construction industry to keep timely knowledge of project status -where things are, what has been done, what needs to done [1]. A variety of metrology instruments like the robotic total station, RTK-DGP differential global position, fanning laser, LIDAR, LADAR, and real-time photogrammetry have been produced to facilitate the traditional earthworks associated in construction [2]. In this study, a surface reconstruction technique was utilized to model and quantify the types of earthwork typically found on construction sites.…”

Section: Introductionmentioning

confidence: 99%

Structure-From-Motion Approach to the Reconstruction of Surfaces for Earthwork Planning

Nassar

Jung

2012

Journal of Construction Engineering and Project Management

View full text Add to dashboard Cite

The reconstruction of surfaces from unorganized point clouds can provide very useful information for construction managers. Although point clouds are generally created using 3D scanners, they can also be generated via the structure-frommotion technique using a sequence of images. Here we report a novel surface reconstruction technique for modeling and quantifying earthworks that can be used for preliminary planning, project updates and estimating of earthwork quantities, as well as embedded planning systems in construction equipment. The application of structure-from-motion techniques in earth works is examined and its advantages and limitations identified. Data from 23 earthwork excavation construction sites were collected and analyzed. 3D surface reconstructions during the construction phase were compared to the original land form. Similar experiments were conducted with piles of earth and the results analyzed to determine appropriate ranges of use for structure-from-motion surface reconstructions in earthwork applications. The technique was found to be most suited to pile of materials with volumes less than 2000 m 3 . Piles up to 10 m in height and with base areas up to 300 m 2 were also successfully reconstructed. These results should be of interest to contractors seeking to utilize new technology to optimize operational efficiency.

show abstract

Section: Introductionmentioning

confidence: 99%

Structure-From-Motion Approach to the Reconstruction of Surfaces for Earthwork Planning

Nassar

Jung

2012

Journal of Construction Engineering and Project Management

View full text Add to dashboard Cite

show abstract

“…Several researchers have proposed formal techniques for evaluating IT in construction [15,16,17,18]; however, none of these techniques deal with HHCs. The justification for using HHCs in the construction industry (and other industries) must account for impacts on the organization's IT infrastructure, the construction processes, and so on [14,19].…”

Section: The Evaluation Methodsmentioning

confidence: 99%

The Value of Handheld Computers in Construction

Saidi¹,

Haas²,

Balli³

2002

Proceedings of the 19th International Symposium on Automation and Robotics in Construction (ISARC)

View full text Add to dashboard Cite

ABSTRACT:Construction is an information intensive industry in which the accuracy and timeliness of information is paramount. Construction projects can experience extensive delays or rework due to information that is unavailable, inaccurate or simply outdated. Handheld computers (HHC) have the potential to solve some of these problems by providing field workers with accurate, reliable and timely information at the location where it is needed. Thus, HHC's can increase the amount of direct work on a project indirectly by directly decreasing the time spent on support work (such as accessing drawings and sending RFI's) and by reducing idle time. Applying a HHC evaluation method to 6 hypothetical construction field activities (punchlisting, materials tracking, MSDS access, drawing access, RFI's, and quantity surveying) showed that HHC's could potentially save time and improve accuracy at the task and activity levels of a construction project. However, barriers related to the HHC's technological limitations and to the nature of the construction industry must be overcome in order to reap the full benefits of HHC's.

show abstract