Concrete Construction articles from June 2002

Concrete Construction archives from June 2002

Open ears. (Editorial Comment).(Concrete Construction conducts reader poll)(Brief Article)(Editorial)(Polling Data)(Statistical Data Included)
June 1, 2002... Since I grew up in the Detroit area, my idea of a crowd is a full house at Michigan Stadium in Ann Arbor--105,000 people jammed in shoulder to shoulder. CONCRETE CONSTRUCTION's readership is slightly smaller than that (about 70,000), but as...

Beware of the excavation rats--Part 2. (Safety Report).(excavation safety)(Column)
June 1, 2002... Preventive measures The Competent Persons responsible for overall excavation safety have many duties. One primary duty is to inspect for possible hazards. This includes analyzing the stability of the soil as well as inspecting the...

Being creative with tilt-up: as the tilt-up industry moves into the commercial office and retail market, the demand for creative, interesting structures increases.(Industry Overview)
June 1, 2002... Tilt-up has long been regarded as one of the least expensive ways to construct buildings. At first, its primary market was warehouse construction--large, flat panels of concrete cast on the floor slab, lifted into position, and finished on the...

High-performance concrete today: nothing routine: initially used in bridge decks, today's HPC applications are diverse--requiring demanding performance from materials and construction.(Statistical Data Included)
June 1, 2002... "All high-strength concrete is high-performance concrete, but not all high-performance concrete is high-strength concrete," says Henry G. Russell, consulting engineer and former chairman of the American Concrete Institute's high-performance...

Just a matter of time. (Special Advertising Section).(concrete repair and construction, scheduling technique and strategy)
June 1, 2002... Hero's a challenge for you. Lot's say you got a call to inspect a six-level, midtown parking structure. The owner says he's got some problems with cracking, but he's mainly worried about the undersides of the decks--especially the top...

Lead your company to new heights.
June 1, 2002... To grow a prosperous company it's imperative to stay on the cutting edge with your management and construction techniques. Competition is fierce. Your challenge is to stay ahead and prosper through constant improvement and innovation. ...

Patterning concrete with paper stencils. (Decorative Concrete).
June 1, 2002... Once considered an orphan child of stamped concrete, patterning fresh concrete with paper stencils has come into its own and is currently in heavy demand. Originally, workers cut shapes from tar paper and wood strips and used them to make...

To improve placement, understanding vibration is key. (Concrete Basics).(Brief Article)(Column)
June 1, 2002... During the 1990s we saw concrete design strengths increasing in pavements, precast products, and throughout the construction industry. Greater strength, however, does not eliminate placement problems, and often makes them worse. Though it may...

Question of the month: concrete cover. (Problem Clinic).(protecting steel reinforcement from corrosion)(Brief Article)
June 1, 2002... Question: Has the ACI standard, 1 1/2-inch minimum concrete cover for smaller rebars (smaller than #5) in concrete exposed to earth or weather, ever been less? There is a huge problem in Florida with severe corrosion in exposed concrete...

Placing near final position, redux. (Problem Clinic).(Brief Article)
June 1, 2002... In June 2001, a Problem Clinic question was posed about the advisability of depositing concrete near the top of a 2:1 slope for a manure pit lining and letting it flow to the bottom. The questioner indicated that the slump was 2 to 3 inches. We...

Bubbled slab surface. (Problem Clinic).(Brief Article)(Editorial)
June 1, 2002... Q. Last year I had a job converting a garage into a living space. The garage is below grade on one side, and the concrete block walls were carefully engineered, waterproofed, and French-drained in an area with rocky, well-drained soil. The slab...

A real nail-biter. (From the Trenches).(concrete setting delay, bridge construction)(Brief Article)(Column)
June 1, 2002... In 1979, a certain young concrete engineer was responsible for an onsite precast operation that was producing segmental bridge units. This 2-year project in Mississauga, Ontario, was the first of its kind in Canada. About 370 segmental precast...