Title: Post -Tensioned Connections
Date: April, 1962
Volume: 7
Issue: 2
Page number: 13-23
Author(s): Irwin J. Speyer
https://doi.org/10.15554/pcij.04011962.13.23
Click here to access the full journal article
Abstract
The general question of connections in the field of precast prestressed concrete is at present ordinarily ·answered by two distinct solutions. The first, and by far the most predominant, is to interrupt the prestressing and introduce a conventional steel connection. This takes the form of lapped or welded mild steel bars or plates, and is familiar to all precasters. The theoretical disadvantage often mentioned about this type of connection is that a section of reduced stiffness is introduced. In practice, this disadvantage is neglected, or if not, is some what compensated for by reducing the working stresses in thesteel. We recognize, however, that there exists other undesirable characteristics in these mild steel connections, among which might be mentioned unsightliness because of rust, close assembly tolerances, the necessity to fireproof, and possibilities for error resulting from misplacement of the connecting elements in the form. The precaster and the consultant continue to make a serious effort to overcome these deficiencies, and the present state of their accomplishments is being summarized through the efforts of the P. C. I. Committee on Connections.