Bridge Girder Erection Machine: SLJ900 - DIY Cardboard

Bridge Girder Erection Machine: SLJ900 - DIY Cardboard Model.
Through alternating functional transformation technique of the main support leg and auxiliary support leg, the bridge erecting machine can over the span to the next pier without the need of the guide beam.

Here is the full video link (2nd video):
https://www.youtube.com/watch?v=Ma086Ej9Fw8&t=612s

Hope you guys will like it...

#Shorts

Видео Bridge Girder Erection Machine: SLJ900 - DIY Cardboard канала V. Idea