We should prefab and mass produce the Border Wall to keep costs down and speed up the construction process, just as Liberty Ships were made during WWII. The Border Wall should be made of precast concrete and steel, and the Best Wall Design can be replicated in precast factories all over the USA and trucked to the border in Sections and installed quickly. Building the wall from scratch on site is the most expensive and least efficient approach. Prefab saves Taxpayer money and perhaps would allow for 2ea Border Walls to be built with a Security Zone.

Order can be put out with specific Best Design Specifications for Border Wall Sections that utilizes USA reinforced, precast concrete and steel bollard designs. Every State can participate in building the uniform Sections, because precast manufacturing companies already exist in every USA State.

US Citizens should be allowed to buy/donate individual Sections, so make it tax deductible so Allow the American People to participate in building The Border Wall if they want to.

Build Specs for Sections, size and weight, should allow for flatbed truck transport, even if oversized/overweight. Waive wide-load/heavy permit fees on USA Interstates.

Precast Sections should start hollow to reduce transport cost, then once installed be pumped full of concrete once at the site to further strengthen and permanently interlock the Sections together.

Sections should be uniform and by design should allow for following contours of the land, including rising and falling elevations.

Large Trenchers such as what are used to install natural gas pipe infrastructure can dig deep trenches quickly, and the Wall Sections can be lowered quickly by crane into the trench and be partially buried to discourage tunneling. For example a 55’ Wall Section could be buried 25’ deep and stand 30’ high.

Individual damaged Sections could then be repaired one at a time as needed, simplifying Border Wall maintenance and repair.

USA steel workers, USA precast concrete workers, USA truck drivers, USA trencher operators, USA crane operators, USA heavy equipment operators and USA construction workers all get jobs building the Border Wall, assisted and protected by the US Military.

Surveillance and security technologies can be accommodated in the Border Wall design.

Budget savings could allow for 2ea Border Walls to be built with a “Security Zone” that can be more easily patrolled that further discourages tunneling and trespassing.

If every individual prefab Section is 10’-12’ wide and manufactured to best uniform design, then America could achieve the greatest Border Wall for Taxpayer money invested. I am not in the precast or steel industry, but this approach just seems like common sense.