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Home > Publications > 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 13 Abstracts search results
Document:
SP107-05
Date:
June 1, 1988
Author(s):
W. R. Carr
Publication:
Symposium Papers
Volume:
107
Abstract:
This building indicates what can be accomplished when the developer, architect, engineer, and contractor work as a team to determine the most economical frame cost for a project. The shape of this office building was of primary importance to the architect and owner, but it penalized steel construction. The team's willingness to pursue framing methods not usually utilized in Michigan lead to the acceptance of a concrete frame. Other projects have undoubtedly been constructed in steel when concrete would have been a more economical alternative. If contractors are to fulfill their commitment to owners, they must be aware of market conditions and market changes. The best system for the last project may not be best for the next. Awareness of new construction methods--and a willingness to utilize them when appropriate--is an important feature for general contractors to contribute to the building team.
DOI:
10.14359/3360
SP107-06
J. M. Shilstone
This is a sequel by the author to a paper discussing the contract documents for architectural concrete. Here, the discussion covers those things that the contractor should do to produce an acceptable architectural concrete project. The recommendations start with a review of the contract documents to locate problems and potential points of conflict. From that point, materials, equipment, processes, and controls are described.
10.14359/3372
SP107-08
J. Bullock
In keeping with the theme of "Forming Economical Concrete Buildings," the end result of the project must be considered. Pumping of concrete walls from the bottom is not the most inexpensive method of wall construction unless the architectural possibilities of form and finish are considered. This concept, by eliminating or minimizing the need of concrete vibration during placement, allows more freedom of form by the designer than other conventional methods and almost guarantees an aesthetically pleasing finish. However, the economy of this technique is predicated upon spreading the initial cost of form fabrication over a broad base through the reuse of formwork. If a project has difficult concrete walls and/or lends itself to form reuse, the concept of pumping from the bottom becomes as economical as other more conventional methods.
10.14359/3377
SP107-07
C. H. Murphree
Forming economical concrete is discussed from the contractor's viewpoint. Two major concrete projects are used to compare manufactured and job-built systems for economy and quality. The contractor reveals his estimated and actual prices. The re-use of form panels, up to 72 times, produces real economy and achieves quality. The "team approach" in selecting the right system is used and recommended.
10.14359/3635
SP107-10
J. M. Shilstone, Jr.
A contractor's construction requirements include different factors than are normally considered in concrete mix proportioning. Changes in materials and job conditions during construction can affect concrete and its ability to meet the contractor's construction needs. Computerized analysis of aggregate gradations and concrete mix proportions from project submittals help reveal potential workability problems that will impact pumping, economy, and finishing. Statistical analysis of concrete test results can reduce concrete cost by using the ACI Building Code to determine minimum average strength requirements. Ongoing analysis of changing materials and job conditions can predict and resolve problems rapidly and, therefore, minimize delays. Two computer programs, seeMIX and seeSTAT, are used to demonstrate how computer analysis can aid construction projects.
10.14359/3653
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