Electronic surveying improves accuracy on BIM driven hospital project

Electronic surveying improves accuracy on BIM-driven hospital project.

Electronic surveying improves accuracy on a @McCarthyBuild BIM driven hospital construction project and @SouthlandInd a mechanical contractor combines an electronic surveying tool with a BIM model to make significant productivity gains in a large-scale hospital construction project.

Using electronic surveying and BIM modeling, two-member crews were able to hit as many as 900 data points per deck per day.

Using electronic surveying and BIM modeling, two-member crews were able to hit as many as 900 data points per deck per day

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Post Tension concrete construction. Stressing a post-tension tendon, a video safety first, I’ve seen these cables snap!

All is calm, form deck is ready for inspection and concrete.

Post Tension Concrete Construction

For you contractors and engineers’ tech jargon: Stressing an unbonded post-tensioning tendon with a hydraulic jack (8-inch stroke). This tendon was roughly 130 feet long so it required two strokes. The elongation for a 100-foot-long tendon is roughly 8 inches.

 

Future of Construction: 3D Concrete Printing

3D Concrete Printing developed at Loughborough University is capable of producing large scale additive manufacturing, has the potential for producing full scale building components.

A demonstration of 3D construction using Contour Crafting where a robotic arm excretes clay or concrete and a metal guide is used to form walls that include a corrugated internal structure for strength. Because the walls are hollow, they have excellent insulating properties. Using Contour Crafting the shell of a 2,000 sq. ft. house, including floors, ceiling and roof, can be built in less than 20 hours custom designed on site.

Robotic extruding method

Robotic extruding method

 

 

 

 

 

 

 

Using 3-D scans to digitally preserve California’s missions

San Juan Bautista, a Central Coast mission founded in 1797

Using cutting-edge 3D scanning technology, crews from a nonprofit called CyArk have wedged themselves into seldom-seen spaces in four of the state’s 21 missions, bouncing 50,000 laser beams a second off centuries-old timbers. The idea is to map the fragile structures more precisely than they’ve ever been, creating virtual 3D models accurate down to millimeters.

via Group using 3-D scans to digitally preserve California’s missions – latimes.com.