#### Subgrade reaction modulus required for design of mat and

Subgrade reaction modulus is the ratio of soil pressure to deflection This modulus is widely used in structural design of mats and slabs The structural design is completed by structural engineer of record SEOR where he/she utilizes the concept of Beam on Nonlinear Winkler Foundation in order to estimate the pressure of soil as well as shear forces and bending moments induced to the