October 2004 Table of Contents

Features Climbing Slovenia's Tallest Structure

DARS, the Slovenian motorway company, planned a visually pleasing structure with spans of up to 140 meters and a maximum height of 87.50 meters. The result, Crni Kal Viaduct, is Slovenia’s longest motorway and tallest structure. Read more

Features Formwork for Self-Consolidating Concrete

Only a few years ago there was very little cast-in-place self-consolidating concrete (SCC) being used in the United States; this year, according to the National Ready Mixed Concrete Association (NRMCA), 2.8 million cubic yards will be placed, and 6 million cubic yards will be placed in 2006. Although SCC mixes are more expensive, contractors are learning that it’s possible to save money on installation, and the results for architectural concrete are much better than when more standard mixes are used. But constructing formwork for walls using SCC is challenging for contractors because lateral form pressures can be much higher than with stiffer mixes. Read more

Features Working Safely Around Pumps

Concrete pump manufacturers, the American Concrete Pumping Association, and others have offered many training opportunities for concrete pump operators. These programs have been well received: ACPA, which offers certification programs covering all pump categories, says it now has trained more than 3500 concrete pump operators nationwide. While this has raised the level of expertise among pump operators, ACPA’s new Co-Worker Safety Training program may yield even broader benefits. Read more

Features Becoming Great Part 2

Second five most important business skills contractors should possess to successfully run their businesses: Read more

Decorative Concrete Using Dyes and Tints

Learning how to color concrete with dyes and tints can provide you with a new decorative technique as well as a way to manage color problems resulting from other coloring systems. Read more

Problem Clinic Backfill timing

Is there any standard or code that defines how strong the concrete must be before one can backfill a concrete wall? Read more

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