Hollow Core Prestressed Concrete Plank Members, Des Moines, Iowa

prestressed concrete


Use nondestructive ground penetrating radar to characterize and evaluate four (4) areas composed of prestressed concrete roof and floor planks. The targeted information was spacing, depth, quantity, diameter of pre-stressed tendons, and beam width of plank members. The purpose of this information is to determine load bearing calculations for new equipment installation.


Individual floor and ceiling plank members consist of similar dimensions and structural design. Each plank surveyed has a 24” width, a 10” depth, and is prestressed with three 1/2” steel tendons. The number of strands in each ½” prestressed concrete tendon is not known. Each tendon is offset the hollow core spaced 8” – 10” apart.


Posted on

July 27, 2017