Debugging Concrete and Structural Steel in Commercial Construction 8: Block-Outs at Tops of Walls

Books by Barton Jahn available on Amazon:

Creating Building Construction Field Forms
Debugging Housing Construction, Volumes 1-5
Debugging Housing Construction Management
Housing Construction Field Best Practices, Volumes 1-2
The Second Half of the Cross
The High Standards of God for Christians
Christians in the End-Times
The Timing of the Rapture
The Perfect Christian Life
Pondering Our World: Christian Essays on Science and Faith