Construction Program Management and Inspection Guide

B–36 Appendix B: Quality Assurance Resources
SAMPLE
CONSTRUCTION PROGRAM MANAGEMENT AND INSPECTION GUIDE (5/01/04)
5.4.4 – Backfill Material for Structures
QC Sampling and Testing Requirements
Quality
Sublot Size/
Test Point of Sampling
Characteristic Test Method(s) Lot Size Frequency Sampling Method
Total Quantity of
AASHTO T11 Backfill Material 1 Sample/ From In-Place Random
Gradation AASHTO T27 Type / Source / 1,000 m 3 Lift of Backfill T2, T248
Project Segment
Maximum Dry AASHTO T99 Total Quantity of
Density and (Method C) Backfill Material 1 Sample/ From In-Place Random
Optimum AASHTO T180 Type / Source / 1,000 m 3 Lift of Backfill T2, T248
Moisture Content (Method D) Project Segment
Maximum Total Quantity of
Stone Size Visual/Tape Backfill Material Minimum Minimum Random
(< 75 mm) Type / Source / 4/Lift/Day Lift of Backfill Visual
Project Segment
Total Quantity of
Maximum Backfill Material Minimum From In-Place Random
Lift Thickness Rod/Grade Type / Source / 4/Lift/Day Lift of Backfill Visual
(< 150 mm) Stake Project Segment
In-Place Total Quantity of
Density and AASHTO T310 Backfill Material 1 Sample/100 From Random
Moisture Content (Method B) Type / Source / m 3 , but not less Compacted T310
(Per Targets) Project Segment than 1/Lift/Day Backfill