Checklists by trade
3 lists · 14 items · 21 photosSoil stabilization inspection checklists
Soil stabilization inspection checklists for the rough-in, final and punch walks: 3 free lists, 14 items and 21 photo requirements, each item naming what to look for and the photo that proves it.
The soil stabilization walks, in build order
Soil stabilization Rough-in· Soil stabilizationSoil stabilization rough-in inspection checklistSubgrade, additive type and spread rate, mixing depth and moisture verified before compaction closes the section6 items10 photosSoil stabilization Final· Soil stabilizationSoil stabilization final inspection checklistCompaction and density, cure or mellowing period, finished grade and surface tightness confirmed before the next course5 items7 photosSoil stabilization Punch· Soil stabilizationSoil stabilization punch checklistSoft or pumping areas re-worked, curing membrane and dust addressed, grade corrections closed3 items4 photos
Where each walk sits in the schedule
- Soil stabilization rough-in inspection checklistrough-in
- After the subgrade is shaped and proof-rolled, once additive is spread and mixed but before the first compaction pass locks it in. Run by: The GC's superintendent or earthwork QC tech walking the section with the stabilization crew before compaction begins.
- Soil stabilization final inspection checklistfinal
- After the cure or mellowing period the design requires, before the base course, slab or pavement covers the section. Run by: The GC's superintendent with the earthwork QC tech, releasing the stabilized section before paving or the next lift.
- Soil stabilization punch checklistpunch
- During closeout of the stabilized area, after the section has been walked and any soft spots flagged, before the next course is released. Run by: The earthwork foreman on a callback, or the GC's superintendent closing subgrade punch before paving mobilizes.
What most often sends soil stabilization work back
- Additive spread by the truckload with no bag or ticket count against the design rate, so a light section goes in undetected.
- Mixer set for a shallow pass that leaves an unstabilized layer under the design depth, only found when the section pumps later.
- Soil mixed dry of the moisture window because the crew was chasing daylight, so it never reaches density.
- Next course scheduled before the mellowing period is up, so the section is loaded while it's still gaining strength.
- Density tested on the easy flat runs and skipped at the edges and low corners where compaction actually fell short.
- Finished surface left loose and dusty, so the next lift bonds to a weak skin instead of the compacted layer.
- A soft spot bladed over and re-graded on the surface while the failed material underneath is left in place.
- Curing membrane skipped where wind and sun dried the surface, so a section loses strength before it's covered.
Common questions
- Which soil stabilization inspections do these checklists cover?
- Soil stabilization rough-in inspection checklist (rough-in): After the subgrade is shaped and proof-rolled, once additive is spread and mixed but before the first compaction pass locks it in. Soil stabilization final inspection checklist (final): After the cure or mellowing period the design requires, before the base course, slab or pavement covers the section. Soil stabilization punch checklist (punch): During closeout of the stabilized area, after the section has been walked and any soft spots flagged, before the next course is released.
- Who runs a soil stabilization inspection?
- The GC's superintendent or earthwork QC tech walking the section with the stabilization crew before compaction begins. The GC's superintendent with the earthwork QC tech, releasing the stabilized section before paving or the next lift. The earthwork foreman on a callback, or the GC's superintendent closing subgrade punch before paving mobilizes.
- What most often sends soil stabilization work back?
- Additive spread by the truckload with no bag or ticket count against the design rate, so a light section goes in undetected. Mixer set for a shallow pass that leaves an unstabilized layer under the design depth, only found when the section pumps later. Soil mixed dry of the moisture window because the crew was chasing daylight, so it never reaches density. Next course scheduled before the mellowing period is up, so the section is loaded while it's still gaining strength.
- Can I run these checklists in RTI?
- Yes. Start a free RTI workspace and load any of the 3 lists (14 items in total). The Photo Gate holds the submit button until every mandatory item is answered and its photos are attached, and approved inspections roll into a branded turnover package with a tamper-evident audit trail.