Construction goes "pre-cast"

Pre-cast components in construction are here to stay for a long long time. The experimenting started with every bit of construction right from houses to towers to industrial installations and it started from the 1960s in the various countries. As the mid-1900s saw the expansion of ready mix concrete, and realized the benefits of controlled construction, the process became more popular, cost effective and widely accepted.

For the Trumph border wall, as 8 companies start to put in the prototypes, it is no exception. And so surprisingly is a wall that we built in last few months.

https://www.businessinsider.com/trump-border-wall-construction-prototypes-photos-cbp-2017-10/#and-the-other-half-will-be-made-of-other-materials-cbp-did-not-specify-what-those-could-be-5