What is the ratio test called that compares bearing capacity to reference limerock?

What is the ratio test called that compares bearing capacity to reference limerock?

• A. Limerock Bearing Ratio Test (LBR)
• B. California Bearing Ratio
• C. Plate Load Test
• D. CBR Test

Answer: (A)

The main idea is a ratio that expresses how a material’s bearing capacity compares to a reference limerock. In this test, you measure the load needed to achieve a standard penetration in the material being evaluated and compare it to the load needed to achieve the same penetration in standard limerock. The LBR value is this ratio times 100. A higher LBR means the material can bear loads more like or better than limerock, which is useful for designing subbase layers in lime-rock–rich regions. This approach is different from other bearing tests. The California Bearing Ratio uses a reference crushed stone instead of limerock, so its ratio is relative to that material. The Plate Load Test is a field test that gives actual bearing capacity and deformation data without expressing it as a ratio to limerock. The CBR Test refers to the general California Bearing Ratio method, not specifically the limerock reference.

The main idea is a ratio that expresses how a material’s bearing capacity compares to a reference limerock. In this test, you measure the load needed to achieve a standard penetration in the material being evaluated and compare it to the load needed to achieve the same penetration in standard limerock. The LBR value is this ratio times 100. A higher LBR means the material can bear loads more like or better than limerock, which is useful for designing subbase layers in lime-rock–rich regions.

This approach is different from other bearing tests. The California Bearing Ratio uses a reference crushed stone instead of limerock, so its ratio is relative to that material. The Plate Load Test is a field test that gives actual bearing capacity and deformation data without expressing it as a ratio to limerock. The CBR Test refers to the general California Bearing Ratio method, not specifically the limerock reference.