Pedestrian slabs in Rialto sit over coarse alluvial sand and river cobble washed down from the mountains. When runoff dries during hot summer months, uncompacted subgrade shrinks unevenly and leaves voids below thin four inch concrete walkways. Founder Rafael Ocampo brought 20 years of flatwork experience before establishing Rialto Concrete Pro in 2016, setting standard sidewalk excavation to six inches across every residential lot.
Mapping from the USDA Web Soil Survey confirms the gritty loam and stone deposits common to San Bernardino County parcels. Without a solid stone foundation, surface runoff channels under the slab and washes fine sediment out from under the edges. Our crew hauls in four inches of crushed rock base, compacting it with mechanical plates before placing any mixed batch so the path never undermines.
In a community where owner occupied homes make up 63.5% of properties, front paths take continuous foot traffic from family households. We hold CSLB C-8 licensing and carry liability insurance on every job, pouring paths to a full four inches of structural concrete with steel reinforcement. Sawn contraction joints every four feet direct seasonal thermal movement so cracking stays hidden in the groove instead of wandering across the walk.