Abstract: Prefabricated modular wallform units are formed with panels designed to mate against one another and to define an aperture through which a tie rod can pass. End rails at the mating edges of the panels have webs, interior end flanges to fit against a sheet of sheathing material (e.g., plywood), and exterior end flanges to be supported against strongback walers. Elongated kerfs are formed in mating edges of the interior and exterior end flanges. These mate to define a universal through-passage suitable for any of a variety of types of tie rod. A median flange extends along the length of the mating side of the web on a line intermediate the end flanges. The median flanges are narrower than the respective end flanges and serve as distance fingers for locating the tie rods. Universal holes are also provided in the webs adjacent the median flanges and on the sides away from the interior end flanges. A T-bolt can be inserted through the universal holes of two mating end rails to join two mating panels together.