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Subgrade and Grading

QUALITY ASSURANCE TESTING AND REPORTING REQUIREMENTS FOR SUB-GRADE PREPARATION AND GRADING PROJECTS

TEST

20-Jan-99

STANDARD

FREQUENCY

(Minimum)

ATT DATA

SHEET(S)

MOISTURE DENSITY TESTS

1. Standard Compaction, -5000 um

2. Standard Compaction, +5000 um

3. Standard Compaction, One Point

DENSITY OF SOIL (In-Place)

1. Sand Cone Method, or

2. Rubber Balloon Method, or

3. Nuclear Density Gauge Method.

4. Correction Factor

Note: The nuclear method may only be used under the following conditions:

(a) The gauge calibration is checked yearly and a log book of standard counts is maintained as outlined in ATT-11, Section 3.7.

(b) Percent compaction and a rock correction is determined as outlined in ATT-11, Section 3.9.1. Correction factors done as outlined in ATT-48

SOILS IDENTIFICATION, HAND

METHOD

MOISTURE CONTENT

1. Laboratory determination of

moisture content of soils.

- Soil and Gravel

- Microwave Method

2. Nuclear Moisture Content.

ATT-23

ATT-19

ATT-20

ATT-9

ATT-8

ATT-11

ATT-48

ATT-29

ATT-15

ATT-11

One for each representative soil type tested for in-place density.

Top 0.3 m, one test per 300 m.

Below the top 0.3 m, 3 tests per metre of fill per 1000 m.

Each density test corrected.

Each significant soil type as required for moisture control.

MAT 6 - 22

MAT 6 - 23

MAT 6 - 34

MAT 6 - 54

N/A

MAT 6 - 24

MAT 6 - 34

REPORTING

1. Compaction

Complete MAT 6 -1 Daily Compaction Report
The listed standard test methods and frequencies are to serve as a guideline for Consultants to use on "typical" or "average" projects, around which project specific testing programs may be developed. Recommended changes to the listed test methods and/or increased or decreased testing frequencies are to be presented in the Consultantís proposal including any supporting rationale. The listed test methods and frequencies are however to be followed in situations of dispute with the contractor, as per contract