Abstract: A wall support system may include a top support plate locatable on a top surface of a floor of the above ground level; a bottom support plate locatable beneath the top support plate on a bottom surface of the floor; a securing means for securing the top support plate to the bottom support plate; a bottom support prop having a first end configured to be coupled to the bottom support plate and a second end configured to be coupled to a load bearing structure associated with the multi-level building; and a top support prop having a first end configured to be coupled to the top support plate and a second end configured to be attached to an inner surface of a pre-cast concrete slab wall substantially vertically positioned on the floor of the above ground level.