CTTP Dynamic Services

AASHTO R 74

Wet Preparation of Disturbed Soil Samples for Test

This test procedure covers the wet preparation of soil samples from the field. They are used for mechanical analysis and to determine soil constants.

Equipment List

Scale (0.1 g)

Scale Equipment Description
Scale Calibration Worksheet
Scale In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Pulverizing Equipment

This item should be listed on the laboratory inventory list.

Sample Splitter (soils)

Splitter Equipment Description
Splitter Calibration
Splitter In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Sample Container (R74)

This item should be listed on the laboratory inventory list.

Buchner Funnel with Filter or Candle Filter

This item should be listed on the laboratory inventory list.

Oven

Oven Equipment Description
Oven Calibration Worksheet
Oven In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Verify Soil/Aggregates Oven Temperature (performed by inspector)

This item is required for R74

Sieve - #40

Fine Sieve Equipment Description
Fine Sieve Calibration Worksheet
Fine Sieve In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Wet Prep Washing Container

This item is required for R74