Review Category : Building Blocks

Discussions of cold and hot weather concrete procedures do not occur until the five-day forecast calls for extreme weather. At that point, everything becomes a rush.

Special concrete mixes, as required, need to be submitted for approval at the beginning of a project. Time is required to test and practice with different temperatures and dosages and to adjust the cocktail of admixtures that form the basis of high-performance concrete today.

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The option to use structural steel supplied and fabricated in foreign countries for projects constructed in the United States is a realistic one for many projects in today’s market. Typically, the most obvious factor that is considered by the project team is the economic impact of doing so. However, in addition to economics, project teams must also consider factors that may have a significant impact on the project outcome, including project-specific issues, design requirements, material substitutions, procurement, fabrication, and construction concerns.

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Many buildings are partially or wholly clad with stone. There are many aspects of stone anchorage that can, and do, affect the long-term performance of the building envelope and the initial and long-term costs of the envelope and building operation. This article presents critical stone anchorage issues with a focus on anchor and fastener selection and design based on the author’s experience.

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Steel Industry Issues First EPDs for Steel Joists and Steel Decks

Thinking green is not enough in today’s construction environment. Any person or company can claim to be sensitive to the environment, but are their products and processes sustainable? With increased demand in the design arena for sustainable building practices and materials, architects, engineers, and other “buyers” can have a difficult time assessing the various parts and pieces that go into any construction project.

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A New FRP Solution for Strengthening Concrete Telecommunication Towers

The wireless communications industry has experienced exponential growth in recent years. Not only is the number of customers increasing, but the amount of information being transmitted through these networks is also increasing. Whereas a decade ago we used our mobile phones strictly for voice transmission, the introduction of the smartphone has increased the demand on the networks and the supporting infrastructure.

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A Novel Lightweight Solution for Long-Span Bridges

Orthotropic steel decks (OSDs) have been used commonly in long-span bridges to reduce self-weight, and therefore improve the spanning ability of these bridges. The OSDs are usually covered with a 2- to 3-inch-thick asphalt wearing course. Under cyclic heavy traffic loads, these steel decks are susceptible to fatigue cracks, while asphalt overlays can suffer from cracking and shoving problems. Both issues compromise the serviceability and durability of the bridge deck.

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A Brief History of Architectural Concrete Blocks

It wasn’t so long ago that a concrete block would not care to show its face in polite society.” This proclamation formed the lead of an extensive article, “Behold the Lowly Concrete Block,” in the March 1956 issue of the architectural journal, House and Home. The celebratory article argued that concrete block was “one of the most glamorous and flexible building materials at our command.”

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