CBR Testing Flashcards
1
Q
Abbreviation (CBR)
A
California Bearing Ration
2
Q
What’s CBR do
A
tests strength/load bearing capabilties of soil
3
Q
Hows it work
A
CBR is a ratio test load to a standard test lead at a specified penetration depth by a standard plunger under controlled density and moisture conditions
4
Q
CBR Process
A
1) Flat area, thin layer of sand
2) Place Bearing Place, ensuring entire contact
3) Place Stffing Plate
4) Pressure Guage
5) Force Applier (jack)
6) Doll Guages (measure settlement)
5
Q
CBR Value >15
A
High Quality
6
Q
CBR 7-15
A
Moderate, needs thin capping
7
Q
CBR 3-7
A
Far, requires capping
8
Q
CBR < 3
A
Poor, requires special treatment
