GEOTECHNICAL OBSERVATION & VERIFICATION€¦ · Sand cone Seeps / subdrains Grading contractor...
Transcript of GEOTECHNICAL OBSERVATION & VERIFICATION€¦ · Sand cone Seeps / subdrains Grading contractor...
GEOTECHNICAL OBSERVATION & VERIFICATION
Corporate Headquarters
18001 W. 106th St.
Suite 300
Olathe, Kansas 66061
Phone: (913) 599 6886
Fax: (913) 599 0574
Terracon.com
Presented by:Michael Stojanoff, PG, CEG, PE, GE
Corporate Headquarters
18001 W. 106th St.
Suite 300
Olathe, Kansas 66061
Phone: (913) 599 6886
Fax: (913) 599 0574
Terracon.com
STEPS1. Grading Plan Check & Review
2. In-Progress Grading Inspections3. Closing Out Grading Permit
Verification of Land Use Mandates
� Geohazards
� Special geotechnical consideration areas
� Building official / planning department
Review of consultant geotechnical investigative report
� Building official
� May include 3rd party review by independent geotechnical consultant
1. Grading Plan Check & Review
Checking site plans satisfy recommendations in consultant geotechnical investigative report
� Correction and rechecking as necessary
� Building official
� Geotechnical consultant
1. Grading Plan Check & Review
Pre-inspection of site
� Verify grading plans properly reflect site topographic conditions
� Verify building plans will fit within site design
� Grading contractor
� May also include owner
� May also include civil & geotechnical consultants
1. Grading Plan Check & Review
Pre-grading meeting
� Scope of earthwork� Total cubic yards of fill
� Daily cubic yards of fill to be placed
� Borrow sources
� Type and size of equipment
� Minimum grading staff & site inspections
� Inspection stage approvals� Rough-grade stage
� Finish-grade stage
� Professional review & stage approvals� Pad certification
� Final grading report
1. Grading Plan Check & Review
Pre-grading meeting
� Special problems� Brush, tree, or rock removal
� Disposal methods
� Benching requirements
� Buttress or stabilization fills
� Subdrain locations
� Grading contractor
� Geotechnical consultant
� May include owner
� May include building official
1. Grading Plan Check & Review
Brush removal / stripping Toe of fill key / sidewall benching / permanent slopes
2. In-Progress Grading Inspection
Excavation / over-excavation
Compaction / density tests� Nuclear gauge
� Sand cone
Seeps / subdrains
Grading contractor
Geotechnical consultant
In-Grading Professional Reports / Interim Approvals
Discovery of previously unknown adverse geotechnical conditions
2. In-Progress Grading Inspection
� Pad certification
� Removal of adverse geotechnical condition & approval to continue grading
� Man-made uncontrolled fill
� Fissures
� Faults
� Landslides
� Seeps
Change of geotechnical consultant during grading
� Temporary stoppage of grading activities
� Partial report by consultant leaving project
� Statement of review and acceptance of inspection partial report by incoming consultant
2. In-Progress Grading Inspection
Rough-grade stage Final-grade stage
3. Closing Out Grading Permit
� All final geotechnical reports & approvals� Final grading report
� Grading contractor
� Geotechnical consultant
� Building official
� Final grade and drainage compliance by civil engineer and land surveyor
� Utility trench backfill compaction reports
� Restoration of grade, berms, and drainage devices damaged during construction
� Landscaping / vegetating slopes
� Certificate of occupancy
Comments, Concerns, Questions