Patent ID: 7347103

Claim:
Pile testing apparatus for testing load bearing capacity, comprising: a. means for applying a static compressive force on a pile to be tested for load bearing capacity; b. an I-bean adapted to receive a reaction force opposite of said compressive force on said pile to be tested; c. two retractable and reusable reaction anchor assemblies positioned in the ground on opposite sides of said pile to be tested, wherein said reaction anchor assemblies are easily retractable from the ground and reusable; and d. means for bracing said I-beam by said two retractable and reusable reaction anchor assemblies to hold said I-beam stationary in counter-action against said opposite reaction force on said I-beam, wherein each of said retractable and reusable reaction anchor assemblies has an anchoring head, a pipe column, a center, and a pulling rod passing through said center.