The slat wall is the best design. Each of those steel tubes is filled with concrete and ramming a 10 ton truck into it will not move it. This design has been tested by the military and the Border Patrol and deemed the best. I believe the slats also go 10 feet under the ground. Then there's other classified stuff we don't know about.
:: Each of those steel tubes is filled with concrete and ramming a 10 ton truck into it will not move it. ::
Hmmmm, weren’t we discussing a Q-drop that referenced bollards in the early spring?