Base Work on Desert Soil
A heavy pad on loose or poorly compacted fill will settle at the corners. Collapsible soils, which compact when they get wet, are common in New Mexico according to the New Mexico Bureau of Geology and Mineral Resources. Side yards often collect roof runoff from the house next to them. So we dig out loose material, compact the base in lifts, and slope the pad so water runs away from both foundations instead of soaking the ground under the slab.



