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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 16 Abstracts search results
Document:
SP90-04
Date:
April 1, 1986
Author(s):
John V. Gould
Publication:
Symposium Papers
Volume:
90
Abstract:
There are four different basic types of plywood most commonly available to the concrete form industry: sanded (non-overlaid), high-density overlay, medium-density overlay, and imported Finnish birch. The differences and important factors needed to help the specifier select the right one and use it correctly have not always been well understood. This paper discusses some of the important considerations: surface characteristics imparted to the concrete; number of reuses, economy, relative cost on a per-use basis; strength and stiffness and use of load-span tables; and the importance of proper edge sealing and form release.
DOI:
10.14359/1768
SP90-15
John G. H. Harrison
The new World Headquarters Building for Elf Aquitaine in Paris, France was designed by a Canadian architectural firm who won the commission in an invited design competition in 1979. Work on construction documents began in Paris in January 1981 and construction began early in 1982. Bouyges, the contractor for the reinforced concrete structure, undertook extensive studies to develop a special formwork system for the facade structure since there is little if any background of experience to draw on in France in the construction of high-rise buildings. At 48 stories this was a building of very significant height and would require a whole new approach. The result of these studies was a very ingenious system of facade forms, fabricated entirely in steel and consisting of column and beam forms, complete with integrated working platforms, access ladders, and 2 story high protective mesh screens. A system of alignment nibs insured faithful adherence to the allowable tolerances both vertically and horizontally. Although the research and capital costs were significant, substantial cost savings were nevertheless made in the erection of the structure both in time and labor thus confirming the validity of this formwork design.
10.14359/1777
SP90-05
Harry B. Lancelot.
Dowel bar substitution is a new phrase but not a new solution. The technique provides a productive means of splicing across construction joints. Examples of the application are shown and discussed in this article.
10.14359/1769
SP90-01
Russel S. Fling
Economy in concrete construction is discussed in light of 3 challenges: 1) the challenge of economizing design, 2) the challenge of economizing construction, and 3) the challenge of standardizing construction. Procedures engineers may use to reduce the cost of construction are given. Suggestions for standardizing concrete construction include standards for concrete classes, column sizes, column spacing, column capitals, and tolerances.
10.14359/1765
SP90-07
Raymond A. Jurewicz.
Personal injury due to construction accidents inflict pain and suffering on the hapless victim and costs the construction industry billions of dollars annually. Recognizing the hazards and utilizing practical solutions can reduce this human and monetary waste. This paper deals with formwork safety from the view of working conditions and the necessary work operations that must be accomplished to install and strip formwork. It does not deal with formwork failures or the causes of these failures. The paper covers general hazards as well as the specific hazards associated with various formwork systems. Solutions to minimize risks associated with the various hazards are recommended. Various ways to develop safety awareness are also discussed.
10.14359/1771
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