Several years ago one of our customers approached us to resolve a specific issue of which no existing answer existed. A preexisting postensioned slab had experienced large differential edge heave which was delivering serious harm to the property. A manometer survey suggested that it had around 2 ½ inches of floor elevation difference.
Due to the geography and environment within the Metro Phoenix area, heaving is much more widespread than settlement in a residential setting. Much of the warning signs of heave are misidentified as settlement, leading to scopesof repair that many times are not consistent with what is really needed.
Through years of work we've created and trademarked a proprietary process
for excavation lowering that can restore and safeguard a house or other
structure from differential heave.The procedure is comprised of:
• Piering all over heaved location
• Excavating beneath the footings and floor
• Grouting back in ribs 5' on center
• Setting up a cut off wall across the perimeter
• Backfilling and repair as required.
We've evolved this procedure over four years back with a fantastic performance record on buildings done to date. Over this time period, we've gradually achieved the approval of the local engineering community for this scope of work from such noteworthy organizations as Terracon, Gervasio &Associates, Felton Engineering, Copperstate Engineering, and many others.
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