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Prof. Dr. Shahrokh Maalek
Chief Technology Officer (CTO) at Digital Information in Construction Engineering (DICE) Technologies, Calgary, Canada, and the President of the Iranian Institute of Spatial Structures (IIoSS), Tehran, Iran

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0 Earthquake Engineering
0 Fracture Mechanics
0 Remote Sensing
0 Structural Health Monitoring
0 Bridge Engineering

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Journal article
Published: 27 April 2021 in Automation in Construction
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This manuscript presents a new framework towards automated digital documentation and progress reporting of mechanical pipes in building construction projects, using smartphones. New methods were proposed to optimize video frame rate to achieve a desired image overlap; define metric scale for 3D reconstruction; extract pipes from point clouds; and classify pipes according to their planned bill of quantity radii. The effectiveness of the proposed methods in both laboratory (six pipes) and construction site (58 pipes) conditions was evaluated. It was observed that the proposed metric scale definition achieved sub-millimeter pipe radius estimation accuracy. Both laboratory and field experiments revealed that increasing the defined image overlap improved point cloud quality, pipe classification quality, and pipe radius/length estimation. Overall, it was found possible to achieve pipe classification F-measure, radius estimation accuracy, and length estimation percent error of 96.4%, 5.4 mm, and 5.0%, respectively, on construction sites using at least 95% image overlap.

ACS Style

Reza Maalek; Derek D. Lichti; Shahrokh Maalek. Towards automatic digital documentation and progress reporting of mechanical construction pipes using smartphones. Automation in Construction 2021, 127, 103735 .

AMA Style

Reza Maalek, Derek D. Lichti, Shahrokh Maalek. Towards automatic digital documentation and progress reporting of mechanical construction pipes using smartphones. Automation in Construction. 2021; 127 ():103735.

Chicago/Turabian Style

Reza Maalek; Derek D. Lichti; Shahrokh Maalek. 2021. "Towards automatic digital documentation and progress reporting of mechanical construction pipes using smartphones." Automation in Construction 127, no. : 103735.