Concrete Construction articles from August 2002

Concrete Construction archives from August 2002

A concrete odyssey. (Editorial Comment).(Concrete Construction covers National Museum of the American Indian and Our Lady of the Angels Cathedral projects)(Brief Article)(Editorial)
August 1, 2002... What a wonderful trip it would be to travel around America, visiting all the most innovative concrete projects along the way. We all love to learn about exciting, beautiful concrete jobs. But when we report on projects in CONCRETE CONSTRUCTION,...

Delamination causes. (Reader Response).
August 1, 2002... I read with interest the Troubleshooting column on "Finishing Too Early" by Bill Perenchio (Sept. 2001, p. 66) and the resulting reader responses from Bryant Mather with Perenchio's reply (Jan. 2002, pp. 18-19). Perenchio mentioned a lack of...

Where concrete home building starts. (Reader Response).
August 1, 2002... I just finished reading your Editor's Note (Feb. 2002, p. 9), and if you had been at the last National Ready Mixed Concrete Association board meeting in North Carolina, you would've heard me give the same message in that room. You weren't...

How to win a canoe race. (News & Events).(Clemson University wins concrete canoe race)(Brief Article)
August 1, 2002... Engineering students from the United States and abroad competed in the coed concrete canoe sprint race at the American Society of Civil Engineers' 150th Anniversary National Student Conference hosted by the University of Wisconsin-Madison. The...

Good thinking. (News & Events).(Oklahoma State University receives Tony Chrest Spirit of Innovation Award)(Brief Article)
August 1, 2002... The Oklahoma State University team, third place in the ASCE concrete canoe competition, received a special "Tony Chrest Spirit of Innovation Award" for the perfection of an injection molding process that they first used last year. This...

Spare those pins. (News & Events).
August 1, 2002... There was no mercy from California Polytechnic State University for those ten regulation bowling pins. Its two teams took first and third place in the concrete bowling competition at the ASCE conference on June 24. Students designed and built...

Freedom Build 2002. (News & Events).(cement industry commemoration of September 11, 2001)(Brief Article)
August 1, 2002... On September 11, 2001, eight concrete Houston Habitat homes were being built. To commemorate the anniversary of that tragic date, the Houston chapter of Habitat for Humanity, the Portland Cement Association, Cement and Concrete Form...

Revised tilt-up specification guide. (News & Events).(Brief Article)
August 1, 2002... The Tilt-Up Concrete Association (TCA) has announced the release of the revised Tilt-Up Specification Guide. "The recommended changes are responsive to the tilt-up method evolving to meet industry trends, as well as owners' demands for some...

Senate addresses highway safety hazards. (News & Events).(Brief Article)(Statistical Data Included)
August 1, 2002... "In 2000, nearly 1100 people were killed in work zones and an additional 39,000 people were injured. What our country needs is a national policy on work zone safety," said DB Hill, III, president of DB Hill Contractors, Little Rock, Ark., and...

ACPA announces NHI training courses. (News & Events).(American Concrete Pavement Association, National Highway Institute)(Brief Article)
August 1, 2002... The American Concrete Pavement Association s "Construction of Portland Cement Concrete Pavement" course, National Highway Institute, now in its 7th year, "has been completely expanded, according to Mike Ayers, ACPA's director of pavement...

The 2002 Site Commander. (News & Events).
August 1, 2002... Selected from 137,217 entry forms, the grand prize winner of HANLEYWOOD'S TOOLS OF THE TRADE Site Commander Sweepstakes and the proud new owner of the 2001 Site Commander is Steve Simkins, a commercial glass installer from Erie, Pa. Now...

It won't happen to me. (Safety Report).(construction accidents)(Brief Article)
August 1, 2002... CONCRETE CONSTRUCTION begins a new monthly safety feature with "It Won't Happen to Me." Written by industry safety experts and based on true stories, the lessons taught by these real-life incidents should increase safety awareness and reduce...

Joints, shrinkage, and slab-edge support: an open challenge to ACI 302. (Tips & Trends).(Brief Article)
August 1, 2002... A very important part of providing a durable concrete slab on grade is the proper treatment of control joints and construction joints. Support of the slab edges is one aspect often overlooked. The Guide for Concrete Floor and Slab...

Rising to the challenge of perfection.(design and construction of Our Lady of the Angels Cathedral in Los Angeles, California)(Statistical Data Included)
August 1, 2002... Past the 25,000-pound bronze doors of Our Lady of the Angels Cathedral in Los Angeles, the entrance corridor rises at a pitch of 95 feet per quarter mile. Cardinal Roger Mahony felt that through the effort needed to climb this "mountain" to the...

Intense geometry: the National Museum of the American Indian: imitating the natural elements of wind, water, and light presents design challenges for the contractor on a very high-profile project.(Brief Article)
August 1, 2002... Shaped as if by the forces of wind and water, a curvilinear concrete edifice clad in limestone is rising in a place of honor on the National Mall in Washington, D.C. Scheduled to open in 2004, the Smithsonian Institution's National Museum of...

Tilt-up pioneer: Robert Aiken developed tilt-up construction nearly 100 years ago.(Brief Article)
August 1, 2002... Tornado-level winds passed through northwest Ohio in the summer of 1998, causing heavy damage to buildings and property throughout the region. Especially hard-hit was the Mess Hall at Camp Perry Military Reservation near Port Clinton. Camp...

Polishing concrete with diamonds: huge potential for a brand-new industry. (Polishing Concrete).
August 1, 2002... Imagine a concrete floor as shiny as glass--this is a look that diamond polishing can achieve. Two years ago very few people in the United States had even heard of polished concrete other than terrazzo floors. Terrazzo floors use carborundum...

When is it safe to remove wall forms and to backfill? (Concrete Basics).(Brief Article)
August 1, 2002... Stripping wall forms after 24 hours is common practice in our industry. Early formwork removal and backfilling keep construction schedules on track and provide easy access to the work--both important considerations--but safe? To avoid damage to...

Acid etch on lightweight deck. (Problem Clinic).(Brief Article)
August 1, 2002... Q. I am planning to pour a 3-inch-thick concrete slab over a metal deck supported by bar joists. This slab will contain radiant heating tubes and will be the finished floor surface, which will then be used as a platform for the wood-framed...

Resurfacing a damaged slab. (Problem Clinic).(Brief Article)
August 1, 2002... Q. Shortly after my slab was poured, there was a thunderstorm. The contractor covered the wet concrete to protect it from the rain. The next day there were marks from the rain, the plastic sheeting, and some light footprints. As years have...

Matching concrete colors. (Problem Clinic).(Brief Article)
August 1, 2002... Q. I have been asked to try to match the shades of concrete on a patio and pool deck. The patio was poured about a year before the pool deck. What are my best options for accomplishing this? A. If the concrete is different, there really...

Loose exposed aggregate. (Problem Clinic).(Brief Article)
August 1, 2002... Q. I live in Wanaka, which is in the south island of New Zealand, and recently laid 150 square meters of exposed aggregate paths and driveway. After laying and during the washing, we had problems getting rid of the water (all but one side of...

Rust in exposed aggregate. (Problem Clinic).(Brief Article)
August 1, 2002... Q. We use a 10-mm brown river aggregate in decorative exposed aggregate finishes. From time to time, what appear to be rust stains become visible (usually after some time) from the coarser angular stone that is found in minor quantities in the...

Compact track loaders. (Product Roundup).(Brief Article)
August 1, 2002... Throughout the construction business the success of small skidsteer equipment has led to the development of other compact equipment. The newest addition is the compact loader with rubber tracks. For many jobsites, this configuration has...

ConcreteScience--PROSOCO alliance. (Product Roundup).(Brief Article)
August 1, 2002... A "marriage" of proprietary concrete cleaners with new equipment for deep-cleaning dirty concrete has positioned Kansas-based PROSOCO and Minnesota-based ConcreteScience to be the full-service providers of products and services for cleaning...

Premier wheelbarrow. (Product Roundup).(also, track loader equipment information)(Brief Article)(Illustration)(Statistical Data Included)
August 1, 2002... Contractors will find the Cariola Wheelbarrow Company's wheelbarrow to be exceptional. "It is light and well-balanced for those full loads of concrete," says Webb Construction's A. Kolomeitz. "They have run for over 3 years and are still...

Who lost the slump? (From the Trenches).(lightweight concrete pouring)(Brief Article)(Statistical Data Included)
August 1, 2002... Lightweight concrete has its own set of potential placing problems, as every contractor knows. These problems were compounded 7 years ago when Albanelli poured suspended concrete slabs on steel decking for a high-profile shopping mall in...