Abstract: A method and apparatus for forming a concrete flush floor having at least one trough formed therein, the method making use of high chair units (14) that support a fiberglass mold (16) having a truncated teardrop-shaped cross section. The fiberglass mold (16) may be supported at an angle to provide a resulting sloping trough. A spacer (17) can be placed in the fiberglass mold (16) during the pouring process to urge the fiberglass mold (16) to assume a first shape. When the concrete has hardened, the spacer (17) can be forced to a second position that allows the fiberglass mold (16) to assume a second position, which second position allows the fiberglass mold (16) to be easily removed from the cast concrete.