Sampling & Testing Guide-Minimum Frequency

April 19, 2022

ROADWAY & BORROW EXCAVATION & EMBANKMENTS

Matls. IM 204

Supersedes October 15, 2019

Sections 2102, 2107, 2109 & 2432

Appendix A (US) Units

MATERIAL OR  CONSTRUCTION ITEM

TESTS

METHOD OF ACCEPTANCE & RELATED IMs

QUALITY CONTROL

INDEPENDENT ASSURANCE & VERIFICATION S&T

REMARKS

SAMPLE BY

FREQ.

SAMPLE SIZE

TEST BY

REPORT

S&T TYPE

SAMPLE BY

FREQ.

SAMPLE SIZE

TEST BY

REPORT

SOURCE INSPECTION

Special Backfill, Crushed Stone (4132.02), Gravel (4132.03)

AS                         209

Crushed Concrete (4132.02), RAP (2303.02)

209,210

Granular Backfill (4133, 4134)

Quality

AS                         209

Engr. Fabric (4196)

Quality

AS                    496.01

Contractor Furnished Borrow

545

CONTR

IM 545

IM 545

CONTR

IM 545 & Cert

V

RCE/ CONTR

1/10 QC tests

35 lb.

CTRL

Test Report

GRADE INSPECTION

Moisture Control, (QC by Contractor) Note 1

Proctor

309

CONTR

1/ soil class

25 lb

CONTR

Field Book & Test Report

V (7) IA (4)

CONTR/RCE CONTR/DME

1/ 10 req’d QC tests (min. 1)(5) 1/proj.

25 lb. 25 lb.

RCE/ DME CTRL/DME

Field Book Test Report

Note 8

Moisture

335, 334

CONTR

1/lift/1500 ft (for max of 1300 cy) (6)

3 lb

CONTR

Field Book & Test Report

V (7) IA (4)

RCE (2) DME

1/ 10 req’d QC tests (min. 1)(5) Witness 1/proj.

3 lb.

RCE

Field Book

Note 8

Moisture & Density Control, including Special Compaction of Subgrade (2109.03C), (QC by Contractor) Note 1

Proctor

309

CONTR

1/ soil class

25 lb

CONTR

Field Book & Test Report

V (7) IA (4)

CONTR/RCE CONTR/DME

1/ 10 req’d QC tests (min. 1)(5) 1/proj.

25 lb. 25 lb.

RCE/ DME CTRL/DME

Field Book Test Report

Note 8

Moisture

335, 334

CONTR

1/lift/1500 ft.(for max of 1300 cy) (6)

3 lb

CONTR

Field Book & Test Report

V (7) IA (4)

RCE (2) DME

1/ 10 req’d QC tests (min. 1)(5) Witness 1/proj.

3 lb.

RCE

Field Book

Note 8

In-place Density

326 & 334, ASTM D2937, D2167, D1556, D8167 (3) AASHTO T191 & T233

CONTR

1/lift/1500 ft (for max of 1300 cy) (6)

As req’d by test

CONTR

Field Book & Test Report

V (7) IA (4)

RCE/ DME DME

1/10 req’d QC tests (min. 1)(5) Witness 1/proj.

RCE/ DME

Field Book

Note 8

AS-Approved Source

Cert- Certification Statement

RCE-Resident Construction Engineer/Project Engineer

IA-Independent Assurance

ASD-Approved Shop Drawing

DME-District Materials Engineer

V-Verification

S&T-Sampling & Testing

CTRL-Central Laboratory

CONTR-Contractor

Note 1: When Contractor QC testing is not required in the contact documents. The RCE will perform verification testing at the frequency listed for QC. Note 2: RCE will direct the Contractor to take a moisture sample beside the RCE verification sample location. Note 3: Low activity nuclear gauge, such as Troxler EGauge, is approved for use for wet density only.  Location for testing shall be as described in IM 334, and moisture content determined per IM 335. Note 4: For earthwork quantities of less than 50,000 Yd^3, no IA will be required. Note 5: If no QC tests are required, then no verification or independent assurance tests are required. Note 6: If source of excavation and moisture have been consistent and within moisture control limits and density has been greater than or equal to minimum density (if required), testing of each lift will be waived. Minimum frequency will be 1 per 1300 Yd^3. Note 7:  For earthwork quantities of less than 1300 Yd^3, no verification tests will be required. Note 8: For Local agency projects not receiving Federal funding, Independent Assurance, IA, tests are not required.

Sampling & Testing Guide-Minimum Frequency

April 19, 2022

ROADWAY & BORROW EXCAVATION & EMBANKMENTS

Matls. IM 204

Supersedes October 15, 2019

Sections 2102, 2107, 2109 & 2432

Appendix A (US) Units

MATERIAL OR  CONSTRUCTION ITEM

TESTS

METHOD OF ACCEPTANCE & RELATED IMs

QUALITY CONTROL

INDEPENDENT ASSURANCE & VERIFICATION S&T

REMARKS

SAMPLE BY

FREQ.

SAMPLE SIZE

TEST BY

REPORT

S&T TYPE

SAMPLE BY

FREQ.

SAMPLE SIZE

TEST BY

REPORT

GRADE INSPECTION

Moisture & Density Control of MSE wall backfill

Proctor

309

CONTR

1/ source

25 lb

CONTR

Field Book & Test Report

Moisture

335, 334

CONTR

1/lift (for max of 250 cy) (1)

3 lb

CONTR

Field Book & Test Report

V IA (2)

RCE DME

Witness 1/ 10 req’d QC tests 1/proj.

DME

Note 3

In-place Density

326 & 334, ASTM D2937, D2167, D1556, D8167 (4) AASHTO T191 & T233

CONTR

1/lift (for max of 250 cy) (1)

As req’d by test

CONTR

Field Book & Test Report

V IA (2)

RCE DME

Witness 1/10 req’d QC tests 1/proj.

DME

Note 3

AS-Approved Source

Cert- Certification Statement

RCE-Resident Construction Engineer/Project Engineer

IA-Independent Assurance

ASD-Approved Shop Drawing

DME-District Materials Engineer

V-Verification

S&T-Sampling & Testing

CTRL-Central Laboratory

CONTR-Contractor

Note 1: If source of excavation and moisture have been consistent and within moisture control limits and density has been greater than or equal to minimum density (if required), testing of each lift will be waived. Minimum frequency will be 1 per 250 Yd^3. Note 2: For MSE wall backfill quantities of less than 50,000 Yd^3, no IA will be required. Note 3: For Local agency projects not receiving Federal funding, Independent Assurance, IA, tests are not required Note 4: Low activity nuclear gauge, such as Troxler EGauge, is approved for use for wet density only.  Location for testing shall be as described in IM 334, and moisture content determined per IM 335.