Case Study: Corning Distribution
ROCKY MOUNT, NORTH CAROLINA
The subgrade reaction is not an intrinsic soil property or a single value. The accuracy of the value should consider the elastic behavior of the soil, loading intensity, surface area loaded, and slab stiffness. This means that results will change depending on the type of soil under your slab, the differences in loads throughout the facility, and the thickness of the slab itself.
There are often two (k) values: short-term and long-term.
The #1 Challenge to Achieving Accurate (k) Values?
Determining who adjusts the subgrade reaction for different load cases.
A knowledgeable contractor can help the team define clear expectations of facility usage and equipment requirements, bridging the gap between the engineering team and the end-user. The design criteria of a facility’s (k) value can then be included on the structural project drawings, complete with qualifiers and analytical limits.
It is critical these values are identified very early in the project lifecycle, prior to pricing or heavy design development.