September 2006 Table of Contents

A Free Exchange Editorial Comment A Free Exchange

To celebrate our fifty year milestone, we looked back to that objective and asked people from across the industry to comment on where we've come from and where they see the industry going. Read more

Stamp of Originality Features Stamp of Originality

Stamping tools may be a little easier to use these days, but essentially the concept of stamping patterns in concrete flatwork has endured since contractor Brad Bowman developed it not long before Concrete Construction was founded. Read more

Art for Art Features Art for Art

Described as a masterpiece of modern architecture, a ziggurat, and Frank Lloyd Wright's great swansong, the Guggenheim Museum is indisputably a monument to the possibilities of concrete. Read more

Back to Basics Features Back to Basics

Self-consolidating concrete (SCC) has arrived, but vibration still prevails—and still follows principles described in a two-part series from March-April 1959. Read more

Hot Market in a Cold War Features Hot Market in a Cold War

In 1961 Berlin built a wall and the Kennedy Administration initiated a nationwide shelter program. Read more

Failures are Finger Posts Features Failures are Finger Posts

In the belief that “a failure is more instructive than success,” Concrete Construction presented an epic 11-part series, “Failure Lessons in Concrete Construction,” authored by construction failures guru Jacob Feld. Read more

The Concrete Advantage Features The Concrete Advantage

January 1980, “the first month of the first year of a new decade,” was, according to Bill Avery in his visionary editorial, “an irresistibly logical time for this journal to attempt to sum up in a single issue just a few of the many characteristics of con Read more

Soaking Up Rays with Concrete Features Soaking Up Rays with Concrete

With skyrocketing fuel prices, energy concerns dominated the decade of the 1970s, and Concrete Construction devoted the July 1978 issue to the subject. Read more

Flat World Features Flat World

As the 1980s loomed, the world was changing. The new smaller, high-lifting material handlers would not function properly on floors that were not flat. Read more

High-strength Concrete Features High-strength Concrete

For a concrete man, Chicago was a great city in which to work and learn. Read more

Admixtures Features Admixtures

When the first issue of Concrete Construction hit the streets in 1956, concrete producers began leveraging the benefits of air-entraining and water-reducing admixtures to improve the buildings and infrastructure where concrete was called on to perform. Read more

Quantum Leaps in Slab Construction Features Quantum Leaps in Slab Construction

When I think back on changes in concrete slab construction during my 50 years, nothing stands out like three inventions of the 1980s that changed the way we constructed slabs: the laser screed, the riding trowel and float dishes, and the early-entry Soff- Read more

Concrete Forming...It's Still About Productivity Features Concrete Forming...It's Still About Productivity

The last 50 years have seen significant changes in the formulations of concrete, but one thing hasn't changed: concrete forming technology is still all about productivity. Read more

Slipform Paving Features Slipform Paving

The advent of slipform paving gave contractors the ability to produce high-quality concrete roads using moving forms technology. Read more

Fiber Reinforcement Makes Good Concrete Better Features Fiber Reinforcement Makes Good Concrete Better

The concrete industry was introduced to the benefits of synthetic fiber reinforcement a quarter of a century ago. Read more

Self-consolidating Concrete Features Self-consolidating Concrete

Self-consolidating concrete (SCC) was developed in Japan during the late 1980s. As its name implies, it does not require any external compaction for consolidation. Read more

Features Lift-slab Construction

In May 1958 Concrete Construction covered a project that used the lift-slab method of raising floors, first introduced in 1950. Read more

Features Post-tensioned Concrete

The first U.S. use of post-tensioned concrete was on the Walnut Lane Bridge in Philadelphia in 1949 with precast post-tensioned girders. The first post-tensioning in buildings was in the late 1950s in lift-slab construction. Read more

Concrete Pumps Features Concrete Pumps

In the early 1960s small line pumps came out of the grout and plaster business. These small pumps had only 3-inch lines, which would not pass standard concrete mixes. Read more

ACI Certification-Improving Quality Features ACI Certification-Improving Quality

In 1956, when cylinders were made on a jobsite, or air or slump was tested, the testing technician may or may not have known what he was doing. Read more

Features Decorative Concrete at the Crossroads

I got started in the decorative concrete industry in the early 1980s. In the past 25 years, this subset of the much larger concrete industry has been growing—recently exponentially. Read more

Diamond Tool Impact on the Concrete Market Features Diamond Tool Impact on the Concrete Market

Cutting concrete with diamond tools began in North America in the late 1940s when flat saws were used experimentally to saw highway joints. Read more

Features Concrete Construction on Fast Forward

The concrete industry's response to society's need for immediate gratification is concrete that can be put into service early—in less than a day in some cases! Read more

Features Has Concrete Repair Work Changed in 50 Years?

When Zera Construction began in 1957, a cubic yard of concrete cost approximately $12; today a basic mix is $70 to $80. Read more

The Laser Revolution Features The Laser Revolution

When laser technology was first developed in 1960, manufacturers scrambled to discover practical uses. Read more

Insulating Concrete Forms Features Insulating Concrete Forms

When ICF foam forms were first created in the mid-1960s, few could have imagined the impact they would have on the construction industry. Read more

Roller-Compacted Concrete Pavements Features Roller-Compacted Concrete Pavements

Roller-compacted concrete (RCC) is a zero-slump concrete that is compacted by vibratory rollers. Read more

Features Awareness of Concrete's Sustainability Grows

While our industry has made many advances over the past five decades, we now see the birth of a movement that will affect the perception and use of concrete in the future. Read more

Fifty Years of Shotcrete Progress Features Fifty Years of Shotcrete Progress

Shotcrete has been around for 100 years. While the early gunite, or dry-process shotcrete, grew in use and various applications around the world for shotcrete's first 50 years, it was in the second 50 years that great progress was made in three important Read more

Skid-steer Loader Mechanizes Manual Labor Features Skid-steer Loader Mechanizes Manual Labor

The skid-steer loader started out as a three-wheeled machine made by Melroe Manufacturing Co. It featured two drive wheels and a rear caster wheel, with lift arms and a simple utility fork attachment up front. Read more

Advances in Drilling Features Advances in Drilling

A star drive and hammer were the tools of choice for concrete contractors 50 years ago, not exactly the most sophisticated or productive system. Read more

Best of Concrete Construction Features Best of Concrete Construction

Concrete Construction takes readers on a journey through the archives. Read more

Features Concrete and the Future

Concrete Construction invited several industry leaders to speculate upon what might be in store for the concrete construction industry in its next 50 years. Read more

People Who Changed Us Features People Who Changed Us

A look back over the past fifty years at the people who left a lasting impact on the concrete industry. Read more

Features Projects Through the Years

Concrete Construction takes a look at the significant projects over the past fifty years in which concrete and industry innovations played a major role. Read more

50 Years of Concrete Construction Progress Features 50 Years of Concrete Construction Progress

Progress in the concrete industry too has been slow in some areas and lightning fast in others. But looking back allows us to see that we have indeed made progress and helps us envision where we are going in the future. Read more

Fifty Years That Flew By Features Fifty Years That Flew By

As the founder of Concrete Construction magazine, Bill Avery changed the concrete industry in profound ways and helped it become the dynamic force it is today. Read more

Features Putting the Industry on the Record

Over the years many people have written for Concrete Construction. Their thoughts, as recorded on the pages of the magazine, form a solid foundation of practical knowledge and experience upon which the industry continues to build. Read more

The Prevailing Material Features The Prevailing Material

By the year 2056, concrete construction will be the most prevalent form of building in the United States. Read more

Features Is That Concrete?

Fifty years from now the material that will be called concrete will be very different from what we have today. Read more

Features Working Smarter and More Efficiently

In the next 50 years we are going to make more progress along several current initiatives. Read more

Features Engineering Superior Performance

Realizing that growth and success for the concrete construction industry will come from innovation and new technologies, the industry is working together to position concrete as the building material of choice. Read more

A Different Industry Features A Different Industry

Green will be the flavor of the day. Owners, architects, and developers will build green. We will do a better job of promoting concrete as a green product and will gain market share as a result. Read more

Features Key Predictions

The next 50 years of change will be equivalent to the changes we have seen in the past 400 years. Read more

Features Good Stewards Advancing in Partnership

Concrete construction, like the rest of the building industry, is facing an increasing challenge to reduce its environmental footprint. Read more

Making Technology Transfer Stick Features Making Technology Transfer Stick

Fifty years ago, floor problems due to moisture were well recognized and many good practices established. Read more

Features Concrete Sophistication

Over the next 50 years, I see a move toward higher quality concrete led by implementation of the 10-to 12-year FHWA Concrete Pavement Road Map research, starting with its “Performance-Based Concrete Pavement Mix Design System.” Read more

Features Concrete's Rediscovery Fuels Growth

The tilt-up and RCF (removable concrete form) segments of the industry will grow significantly in the next 50 years, outperforming the market in general. Read more

Features The Next 50 Years of the Interstate

Future challenges lie in five key areas: future capacity requirements, economics of materials, balanced surface characteristics, safety and security, and sustainability. Read more

Formwork and Shoring In 2056 Features Formwork and Shoring In 2056

Composite materials will be more prevalent. Research and experimentation with composite surfaces as a replacement for plywood has been conducted for years, but the higher composite costs have not yet made it an economical alternative. Read more

Chapel of the Holy Cross, Sedona, Ariz., 1956 Projects Through the Years Chapel of the Holy Cross, Sedona, Ariz., 1956

Built in the rugged desert terrain, this chapel's dominant element, the 90-foot-high cross, is also its major loadbearing structural element and extends 30 feet below the main floor into a cleft between the surrounding buttes. Read more

ACI Headquarters, 1958 Projects Through the Years ACI Headquarters, 1958

Exposed architectural concrete for walls and roof defined the headquarters of the American Concrete Institute in Detroit. Read more

Sydney Opera House, 1967 Projects Through the Years Sydney Opera House, 1967

A troubled project from the start, the cost of the Sydney Opera House ballooned from an estimated $7.2 million in 1957 to $120 million upon completion in 1973. Read more

University of California at San Diego, 1970 Projects Through the Years University of California at San Diego, 1970

The university's central library, designed by architect William Pereira and built by Nielsen Construction, San Diego, required sophisticated forming because of the overhanging levels. Read more

CN Tower, Toronto, 1975 Projects Through the Years CN Tower, Toronto, 1975

At 1805 feet tall, the CN Tower was the world's tallest freestanding structure. Read more

Sunshine Skyway Bridge, Tampa Bay, 1987 Projects Through the Years Sunshine Skyway Bridge, Tampa Bay, 1987

At its opening the Sunshine Skyway was hailed by the St. Peters-burg Times as a triumph of function and beauty. Read more

Viaduc de Millau Projects Through the Years Viaduc de Millau

The 1.5-mile-long bridge near the town of Millau in southern France, consisting of eight spans, sits atop the world's tallest reinforced concrete piers ranging from 260 to 804 feet tall. Read more

Rebar Research Features Rebar Research

One common question from readers concerns requirements for removing form release over-spray from rebar. Read more

TCA Forms Seismic Design Task Group News & Events TCA Forms Seismic Design Task Group

The Tilt-Up Concrete Association has announced the formation of a seismic design task group, formed as a proactive measure to involve the experts in the tilt-up industry. Read more

News & Events Study Details Advantages of Performance-Based Specifications

A study by the NRMCA Research Laboratory compares the properties of concrete mixtures optimized for performance that may not comply with typical prescriptive provisions in specifications for concrete construction. Read more

News & Events Building With Concrete Competes With Steel

With construction costs skyrocketing, due largely to the rising price of steel, the developers of a new luxury condominium in Providence, R.I., scrapped plans for a steel structure and drew up a new design in concrete. Read more

PCA Staff In Capital's First Green Office Building News & Events PCA Staff In Capital's First Green Office Building

The Portland Cement Association (PCA) has relocated its Washington, D.C., offices into a sustainable building, re-affirming the cement industry's commitment to sustainable development. Read more

A Long or Short 50 Years Hime & Erlin On Concrete A Long or Short 50 Years

William Hime and Bernard Erlin look back on fifty years in the concrete industry, as well as the legacy of Concrete Construction. Read more

Decorative Concrete Comes of Age Decorative Concrete Decorative Concrete Comes of Age

Today the decorative concrete market is growing faster than any other segment of the concrete industry. There are hundreds of manufacturers and thousands of contractors, coinciding with the development of strong, durable concrete. And there are highly skilled concrete finishers with a good understanding of concrete. Here are some of the pioneers. Read more

The Fifty Year Retrospective Problem Clinic The Fifty Year Retrospective

Over the past fifty years, CONCRETE CONSTRUCTION's contributors have enjoyed serving our readers by finding innovative answers to their concrete quandaries. We look back at fifty years of Problem Clinics. Read more

50 Wonderful Years Contractor to Watch 50 Wonderful Years

Gene Boeke was a ldeader in the concrete industry for 50 years; we asked him to comment on the changes he's seen. Read more

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