Abstract: Forming members for pouring of concrete walls which members hold sheets or material in spaced relation to one another to provide a concrete receiving space therebetween. In a horizontal mode, a base member having a web with U-shaped channels at the respective ends thereof is secured to a poured or otherwise formed foundation and a first course of insulating or other material sheet is placed in the U-channels. The forming members include H-shaped elements on the respective ends of a web to be received upon the upper edge of the first course of sheets, thus lying horizontal, to receive another course of sheets in alignment thereabove. This formation extends upwardly with sheets received into each H-shaped element. A second U-channeled web caps the sheets upon proper wall height being reached.