Construction Program Management and Inspection Guide

SAMPLE
8.6 – Application of Engineering Limits in the Acceptance
Determination
All work shall be performed to the lines, grades, cross-sections, dimensions, and material
requirements set forth in the plans, specifications and this QC Plan. Each Lot of Earthwork
material shall be uniform in character and reasonably close to the prescribed Target values and
within the Engineering Limits for each of the Quality Characteristics outlined in the tables
below. If a QC or Acceptance test result for an individual Sublot falls outside of the Engineering
Limits, the material contained in the Sublot represented by the failing test result will be reworked
or disposed of in accordance with the procedures outlined in Section 7.6 above.
8.6.1 – Backfill Material for Muck Excavation
Appendix B: Quality Assurance Resources
CONSTRUCTION PROGRAM MANAGEMENT AND INSPECTION GUIDE (5/01/04)
Targets and Engineering Limits
Lower Upper
Engineering Engineering
Material Type(s) Quality Characteristic Limit Target Limit
Rock Excavate Maximum Rock Size - - 1 meter
Soil Classification (AASHTO M145) A-3 or Portion of A-2 and A-1 per M1.02.0
150 mm Sieve - Per SC 100
50 mm Sieve 90 Per SC 100
(AASHTO T311) 4.75 µm Sieve 20 PerSC 65
75 µm Sieve 0 Per SC 12
Plasticity Index (AASHTO T90) - - 6%
Special Borrow Maximum Percentage of Wear - - 50%
(M1.02.0) (LA Abrasion) (AASHTO T96)
Maximum Dry Density (W dm ) SC – 5 kg/m 3 Per SC SC + 5 kg/m 3
(AASHTO T180, Method D)
Optimum Moisture Content (W mo ) SC - 2% Per SC SC + 2%
(AASHTO T180, Method D)
Maximum Lift Thickness - - 300 mm
In-Place Density 95% W dm 100% W dm
(AASHTO T310, Method B)
In-Place Moisture Content W mo - 2% (W mo) W mo + 2%
(AASHTO T310, Method B)
B–51