Date of Award

Spring 1-1-2013

Document Type


Degree Name

Master of Science (MS)


Civil Engineering

First Advisor

Foley, Christopher

Second Advisor

Heinrich, Stephen

Third Advisor

Wan, Baolin


Hollow-Core precast plank is a commonly used building component. The

common method to lift and erect these planks is through the use of slings. This method

has several drawbacks and has spurred on the current effort to investigate and determine

the capacity of lifting inserts post-installed into the top of precast hollow-core planks.

The insert that was studied is the P-52 "Swift Lift" Insert supplied by Dayton-Superior.

Physical testing of 16 inserts was done to aid in determining the tensile capacity

of the insert. The insert was a 3/4" diameter steel insert by 5 1/2" long and it was post

installed using non-shrink grout into the top of a hollow-core plank shortly after it was

extruded. A literature review was also performed to further analyze the insert and to

formulate analytical expressions capable of reliably predicting this tensile (pull-out)

capacity of the insert.

The testing resulted in an average measured tensile capacity of 13.8 kips with a

standard deviation of 1.85 kips. Our predictive model gave us a capacity of 12.33 kips

which is within one standard deviation from the average measured capacity. A factor of

safety of 2.2 was also calculated and developed. When we apply our factor of safety to

our measured tensile capacity we obtain a recommended capacity of 6.2 kips.