Last month, Lao Li, the on-site supervisor of a precast component factory in Shenzhen, called me and said in a tone that sounded like a fire: “There was another mistake on the construction site – the new assembly workers couldn’t understand the reinforcement details of the precast wall panels, they reversed the position of the sleeve grouting holes, and all six wall panels were returned to the factory.

The transportation and lifting costs alone cost more than 40000 yuan.

” Lao Li’s troubles are not an isolated case.

In our visits to dozens of precast projects in Beijing, Guangzhou, Shanghai, and Shenzhen by the One Meter Building Decoration Salon Society, over 60% of project managers reported that the contradiction between frontline craftsmen being able to work but unable to understand drawings and using traditional tools but not understanding BIM models has become the biggest bottleneck in improving the efficiency of precast buildings.

Fixing Socket

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