International Concrete Abstracts Portal

International Concrete Abstracts Portal

The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

Showing 1-5 of 575 Abstracts search results

Document: 

CI4712Bischoff

Date: 

December 1, 2025

Author(s):

Peter H. Bischoff, Wassim Nasreddine, and Hani Nassif

Publication:

Concrete International

Volume:

47

Issue:

12

Abstract:

This is the last article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. The Code’s approach for calculating immediate deflection of reinforced (nonprestressed) concrete is broadened to include prestressed concrete loaded above the cracking moment (Class T and Class C prestressed members).

DOI:

10.14359/51749338


Document: 

CI4705Bischoff

Date: 

May 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

5

Abstract:

This article, the fourth in a five-part series on calculating deflections using a new expression for the effective moment of inertia Ie introduced into ACI CODE-318-19, provides a deflection example. The example follows the procedure outlined in Part 1 to compute the deflection of reinforced concrete (nonprestressed) one-way slab with both ends continuous.

DOI:

10.14359/51746784


Document: 

CI4704Bischoff

Date: 

April 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

4

Abstract:

This is the third article in a five-part series. While Parts 1 and 2 review the procedure and basis for computing deflection of reinforced concrete with a new expression for the effective moment of inertia Ie first adopted in ACI CODE-318-19, this article examines the implications of this change for satisfying deflection limits of beams and one- and two-way slabs. A need is seen to revise current minimum thickness values for beams.

DOI:

10.14359/51746696


Document: 

CI4703Bischoff

Date: 

March 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

3

Abstract:

This is the second article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. It reviews the development of a new expression for the effective moment of inertia Ie used to calculate immediate deflection of cracked reinforced (nonprestressed) concrete flexural members at service load and justifies the need for a change.

DOI:

10.14359/51745652


Document: 

CI4702Bischoff

Date: 

February 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

2

Abstract:

The is the first article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. This article reviews the procedure and uncertainty for computing deflection of reinforced (nonprestressed) concrete flexural members.

DOI:

10.14359/51745615


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