Combination column and panel barrier system and method of construction

A precast concrete wall for use adjacent a roadway capable of being rapidly and efficiently constructed in a right of way of limited width, capable of withstanding nominally applied overturning and destructive forces and adapted to deflect a nominally impacting vehicle onto the roadway comprising:

• a. at least two precast concrete modules each comprising:
• (i) a generally vertically disposed panel having a thickness, a height, and a first generally vertical edge and a second generally vertical edge;
• (ii) a first generally vertically disposed U-shaped member and a second generally vertically disposed U-shaped member, each said first and said second U-shaped member having a front leg and a rear leg, and a thickness and a height substantially similar to said thickness and said height of said panel, each said first and said second U-shaped members horizontally located at opposite ends of said panel;
• (iii) each said panel of said first precast module and said second precast module slanting in a horizontal plane from said front leg of said first U-shaped member to said rear leg of said second U-shaped member;
• and
• (iv) said first U-shaped member, said second U-shaped member, and said panel capable of overcoming ambient overturning forces exerted on said panel;
• b. said first U-shaped member of said first module adapted to be located adjacent to said second U-shaped member of said second module for forming a stay-in-place form for casting a structural support column on-site, said structural support column securing said first module to said second module, said stay-in-place form having a cavity extending vertically throughout substantially the entire height of said stay-in-place form;
• c. means, located in said cavity of said stay-in-place form, for reinforcing said column;
• d. cast-in-place concrete positioned in said cavity of said stay-in-place form and encasing said reinforcing means for withstanding said nominally applied overturning and destructive forces;
• and
• e. said stay-in-place form being an integral part of said column once said cast-in-place concrete hardens;
• whereby said precast concrete modules are inherently stable and capable of standing upright with no other support for said modules so that said modules may be placed on-site and said first module may be rapidly secured to said second module allowing for rapid and efficient construction of said precast concrete wall.