A method of construction using sheet piling sections that includes the steps of: (a) installing a sheet piling wall in the ground to enclose a first area and a second area; (b) excavating a plurality of holes in the first area; (c) excavating the second area; (d) installing a plurality of first area structural supports; (e) leveling the first area; (f) forming a first floor in the first area; (g) excavating the first area to form a first area chamber; (h) leveling the bottom surface of the first area chamber; (i) forming a first area chamber floor; (j) repeating steps (g) through (i); (k) installing a plurality of second area structural supports; (l) forming a bottom floor in the excavated second area; (m) forming a ceiling above the bottom floor to form a second area chamber; and (n) repeating step (m) until a plurality of second area chambers are formed.