A method of constructing a precast concrete wall at a job site having a right of way, said wall consisting of a plurality of precast concrete, combination panel and column modules, wherein a first precast module and a second precast module each are comprised of:
- a generally vertically disposed panel having a thickness, a height, and a first generally vertical edge and a second generally vertical edge;
- 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;
- 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;
- said first U-shaped member, said second U-shaped member, and said panel capable of overcoming ambient overturning forces exerted on said panel whereby each said precast module is inherently stable and capable of standing upright with no other support, wherein said method of construction comprises the steps of:
- a. constructing foundation means in the direction of said wall for supporting said wall, said foundation means having;
- reinforcing material through said foundation means, said reinforcing material extending upwards a sufficient height for reinforcing said wall;
- b. transporting said first and said second precast modules to said job site and placing said first and said second precast modules in the vicinity of their final placement in said wall;
- c. positioning said first precast module over said foundation means so that said first precast module is aligned with a top surface of said foundation means;
- d. lowering said first precast module so that said first precast module engages said top surface of said foundation means by lengthwise contact thereagainst in a stacked relationship, a bottom surface of said vertically disposed panel of said first precast module and said first and said second U-shaped members of said first precast module support said first precast modules' weight in an upright position overcoming ambient overturning forces;
- l. placing said second precast module adjacent to said first precast module so that said second U-shaped member of said second precast module is removably coupled with said first U-shaped member of said first precast module forming a stay-in-place form surrounding said reinforcing material extending upward from said foundation means;
- f. pouring cast-in-place concrete into said stay-in-place form encasing said reinforcing material;
- and
- g. allowing said cast-in-place concrete to harden so that said stay-in-place form becomes an integral part of said first and said second precast module.