When building your footings, ensure they are built level to within a tolerance of ¼" and that they are troweled smooth. If the footings are not level and smooth, it will create unnecessary work later when it is time to plumb the walls. If your project has stepped footings, try to maintain elevation changes in 12" or multiples thereof. This will minimize waste and speed up construction significantly. For Quad-Lock walls with nominal concrete thickness of 8" or less, the standard footing wi...