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Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 132 Abstracts search results
Document:
SP359_10
Date:
November 1, 2023
Author(s):
Matthew D. Lovell, Royce W. Floyd, Benjamin Z. Dymond, Kenneth C. Hover
Publication:
Symposium Papers
Volume:
359
Abstract:
This paper presents an overview of shear analysis and design based on the ACI 318-19 Building Code Requirements for Structural Concrete as it relates to an introductory reinforced concrete course. The important content related to this topic is summarized and several effective active learning strategies and pedagogical resources are presented to augment and enhance student learning for this challenging topic. The description of each active learning activity also includes a discussion of the underlying pedagogical theory, an estimate of preparation and implementation time, and recommendations for implementation. The paper also highlights lessons learned from the authors based on observations from several years of instruction.
DOI:
10.14359/51740296
CI4506318CodeCases
June 1, 2023
Concrete International
45
Issue:
6
ACI has received written requests for clarification of the intent or application of provisions for special structural walls included in ACI 318-19: Building Code Requirements for Structural Concrete. In response, ACI Committee 318, Structural Concrete Building Code, has developed, balloted, and approved three code cases to clarify the relevant Code sections.
CI4503Dolan
March 1, 2023
Charles W. Dolan and Raul D. Bertero
3
The concept of “partial strength reduction factors” has long been used in Canadian, British, and European building codes. Expanding the use of material ϕ factors (one for concrete and one for steel reinforcement) to all sections and members would provide a uniform approach to factored strength calculations and resolve several abnormalities in the current ACI 318 Code.
CI4412Hurff
December 1, 2022
Jonathan Hurff and Ian McFarlane
44
12
Performance-based wind design (PBWD) allows for more latitude to design engineers; however, it has only been used on a limited number of buildings in and outside the United States. ACI Subcommittee 318-1W, Wind Provisions, was formed to develop a new Code Appendix with PBWD provisions to be included in ACI 318-25.
CI4412Q&A
Kyle Stanish
I am working on a renovation of a building that has existing concrete pan joists. The building is from the 1930s. The concrete joists are 10-1/2 in. (267 mm) deep with a 2-1/2 in. (64 mm) slab and spaced at 25 in. (635 mm) on-center. They have one bottom bar that is continuous and another bar that is at the bottom at midspan and bent to create top bars at the supports. The joists also appear to widen in plan near the supports. I have been searching for load tables for pan joists online in vain. Does ACI have any historical publications with the design loads for concrete ribbed slabs/pan joists? With regard to concrete cover, for example, Table 20.5.1.3.1 in ACI 318-19,1 what is the assumed or anticipated design life of the structure that these values are given for: 30, 50, or 100 years? It is important for us to understand this from a durability perspective in the event these values do not cover the required design life of the concrete members in our project design, which needs to be for 120 years.
I am working on a renovation of a building that has existing concrete pan joists. The building is from the 1930s. The concrete joists are 10-1/2 in. (267 mm) deep with a 2-1/2 in. (64 mm) slab and spaced at 25 in. (635 mm) on-center. They have one bottom bar that is continuous and another bar that is at the bottom at midspan and bent to create top bars at the supports. The joists also appear to widen in plan near the supports. I have been searching for load tables for pan joists online in vain. Does ACI have any historical publications with the design loads for concrete ribbed slabs/pan joists?
With regard to concrete cover, for example, Table 20.5.1.3.1 in ACI 318-19,1 what is the assumed or anticipated design life of the structure that these values are given for: 30, 50, or 100 years? It is important for us to understand this from a durability perspective in the event these values do not cover the required design life of the concrete members in our project design, which needs to be for 120 years.
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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.