May 1995 Table of Contents

Features Producing a Rock-salt Finish

Recently, I saw a concrete patio that had a rock-salt finish, which is characterized by many small surface indentations. Can you explain how to produce such a finish? Read more

Features Pan Floats Help Make Nestle's Floors Sweet

Like many concrete floor contractors, we were just plain scared of the "F" word: F-number specifications for concrete floors. Even though we'd been a concrete contractor in California since 1906, there had not been any floor projects in our area requiring F-number flatness. The Nestle distribution center, the first project in our area to include floor flatness specifications using F-numbers, is a tilt-up concrete building with a floor area of 700,000 square feet. Read more

Features Mechanical Rebar Splicing Systems for Cast-in-Place Concrete Structures

Before rebar can be used in a typical reinforced-concrete structure, designers and contractors must carefully plan how to join long lengths of reinforcing steel. When contractors are concerned about issues such as congestion, convenience, structural integrity, and load transfer, it is often worthwhile for them to consider using mechanical connections. Read more

Features Diversion Channel Helps Arizona Canal Control Flooding

In december 1990, Sundt Corp. tackled a formidable construction project - Reach IV of the Arizona Canal Diversion Channel (ACDC). The task: To build the final 4.6-mile section of a new, 40-foot-wide, 24-foot-deep concrete drainage channel in Phoenix. In October 1993, after nearly three years of hard work, Sundt completed its mission. The company also garnered the applause of its peers, as it won the 1993 Build America Award from the Associated General Contractors of America, the 1994 Contractor of the Year award from the American Public Works Association, and the National Excellence in Construction Award from the Associated Builders and Contractors. Read more

Features Ice Rink Floor Placed in One Pour

Placing the ice rink floor for the Kiel Center, St. Louis' new sports and entertainment facility, was one of the biggest challenges of the building's construction. The 664, 240-square-foot facility is home to the St. Louis Blues professional hockey team. Because smooth ice is critical for hockey play, uniform flatness and levelness of the slab are essential. But the greatest challenge was to pour the 202x102-foot, 8-inch-thick slab monolithically. Because of an elaborate system of refrigerant piping embedded in the slab to produce and maintain the ice, the slab could have no joints. Read more

Features 10 Steps to Placing Flat Floors

By now you have seen, or at least heard of, floor Flatness (FF) and levelness (FL) specifications. If you haven't had an opportunity to construct a slab to FF/FL specifications, you may wonder what steps are required to produce floors that pass the test (ASTM E 1155). A common specification for industrial applications with moderate to heavy vehicular traffic is FF35/FL25. The following 10 steps have proven successful in achieving this level of quality. Read more

Features Restored Driveway Wins Design Award

In 1994, Robert J. Wagner, owner of RJW Stamped Colored Concrete, Silverlake, Wis., replaced a Kenosha, Wis., homeowner's driveway with concrete, achieving stunning results. In fact, his work recently earned a design award in the Historical Restoration with Concrete category form the Wisconsin Ready Mixed Concrete Association. Read more

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