Contractor to Contractor: In this second of a two-part series, contractor-turned-homebuilder Fernando Pages Ruiz shares his knowledge on how to choose a mix, prep the site, and install porous pavement.

Although a blended, high-course aggregate/low-fines concrete (a concrete blend of Portland cement, 3/8" or pea gravel aggregate, and little to no sand) is a simple concept, the logistics of it are far from simple. For this highly porous concrete to provide a durable surface, conditions have to be almost perfect. The concrete requires an exact proportion of aggregates and water, special chemical admixtures, proper mixing during delivery, and expert placement. I recommend that if you decide to use pervious pavement in one of your projects, don’t do it yourself. Hire the very best paving contractor in your area and work with the largest and most sophisticated ready-mix supplier. Pervious pavement is not so much a concrete product as it is a paving system, including soil, sub-grade, and, of course, the mix.

You’ve been reading about BIM. It’s being used by all of the big companies, and they’re talking about the benefits they’ve reaped.You know that BIM will be coming to your workplace soon, too, but how and from what direction? Are you just supposed to buy a software suite and hope for the best?

As it turns out, that’s an approach not even the product makers and suppliers would recommend. Building information modeling (BIM) is increasingly being described as a "disruptive" technology, even by its biggest promoters, for a reason.“Most people now understand that BIM is a process, not a product,” says Catherine Palmer, Sr. Industry Marketing Manager, AEC Solutions at Autodesk. “It’s a paradigm shift.” When asked how small to medium sized firms should handle the move to BIM, Jim Lynch, Vice President, Building Product Line Group at Autodesk recommends education as a first step. “Position yourself by beginning with the concept,” says Lynch, “Then embrace it.”

Green building practices have come on the scene so fast that many implications – and unintended consequences – are just now coming to light. How can you protect yourself, legally speaking, in these new situations?

Environmentally conscious building practices are typically associated with positive outcomes, such as improved energy efficiency, reduced material waste, financial savings as a result of tax incentives, and improved builder reputation. In addition to these benefits, research indicates that certified green buildings cost less to operate; command higher occupancy rates; contribute to a healthier, safer environment; and can possibly enhance employee recruitment and productivity.

From green building to Building Information Modeling (BIM), new technologies are changing the construction game and changing it fast. What legal and contractual protections can be put in place as the workplace adopts these technologies?

There’s no question that, in the design and construction industries, Building Information Modeling (BIM) is what’s termed a “disruptive technology.” Since the 1980s, when PCs finally became affordable enough for architectural practices to begin to bring them to bear on design, computing power has become ubiquitous and increasingly influential on budgeting, programming, design, and construction.

The new Barclays Center will not only provide a home for the Brooklyn Nets but will offer the surrounding community a civic space and an architectural  icon.

Not since 1957, when the Dodgers left Brooklyn for Los Angeles, has this popular New York borough been so close to finally having a major league sports team to call its own. Despite significant public opposition, a faltering national economy, a Supreme Court case over eminent domain, and a Frank Gehry design deemed too expensive, the Barclays Center is well underway, with construction due to be completed in September 2012. Designed by SHoP Architects and the sport facility practice at Ellerbe Becket, this voluptuous mass with weathered steel skin will be the $4.9 billion home of the Brooklyn Nets NBA team.

Two large-scale construction projects, one an interdisciplinary research building on the University of Colorado campus and the other a new arena located in Lincoln, Nebraska, shift away from awarding contracts based solely upon lowest bid.

Many business-as-usual practices within the building industry are being rethought. Among them is the practice of automatically awarding a contract to the lowest bidder. It is becoming more common for clients, architects, and general contractors to team up early and work closely together for the good of the client, the project, and the project’s end users. Such is the case for the Colorado Initiative in Molecular Biotechnology, with a new building on the campus of the University of Colorado at Boulder that was designed by Robert A.M. Stern Architects, and for the new Haymarket Arena in Lincoln, Nebraska.

Very much in keeping with Dallas' official “Live Large, Think Big” slogan comes a wonderful urban expression of the exuberance of this huge Texas city. The 400'-high Margaret Hunt Hill Bridge (MHH Bridge), designed by Santiago Calatrava, will span the Trinity River, connecting Dallas to West Dallas, and is expected to be complete in the spring of 2012, after 14 years of planning, design, budget cuts, redesign, and construction. The Trinity River Corridor Project, backed by a $245 million bond passed by Dallas voters in 2005, brought Calatrava to town to design three bridges over the Trinity River. Calatrava's bridges will provide an architectural signature for the Trinity River Corridor Project and hopefully will become a symbol of Dallas, nationally and internationally.

As the construction industry continuously looks for ways to enhance its offerings to companies and clients, its abilities to do more with less and to offer better value by using better technologies will provide real benefit. It’s also rewarding for us drivetrain and energy nerds to see the application of some pretty cool and useful technologies such as biofuels that are morphing from research lab to fuel tank and from start-up enterprise to hyper-clean engine.

Because I love heavy machinery, watching the massive mining equipment in "Avatar," notably the Slash Cutter and the D-22 dozer, had me secretly thinking, “Holy cow, I wanna drive that thing!" The lingering images of the uber-heavy equipment and its seemingly boundless ability to get a lot of work done in a hurry made me think of how today’s machines might morph into these mega-machines. Although "Avatar's" remote-controlled bull dozer may exist only on screen, Google recently announced that it had sent one of its self-driving Toyota Priuses over 140,000 miles of California roads by using their Google Maps and Street View technology. Likewise, the Center for Automotive Research at Stanford (CARS) sent a robotic self-driving Audi TTS coupe up Pikes Peak in the Pikes Peak International Hill Climb at racing speeds, further fueling my imagination about next-generation equipment.

The answer to this question lies in economics. In a down economy, it would seem logical that the cost of materials would drop in response to a decline in projects, i.e., a lack of demand. However, global events impact construction costs in the United States, specifically the prices and availability of materials. We spoke with Ken Simonson, the chief economist for the Associated General Contractors of America (AGCA), to learn exactly what is driving construction costs and find out his predictions for the coming months.

Upon first blush, the term “Lean Construction” seems to lack the hype usually associated with the latest and greatest, best and brightest product of construction firms interested in getting the attention of their clients, who always want to save money and receive greater value in the buildings. The relentless quest for ways to improve the often provincial construction processes at work for projects from the large to the small, from the simple to the complex. Indeed, the construction industry is haunted by the constant beckoning of high-tech solutions; in most other primary industrial arenas, factory lines, supply chains, and sophisticated “back office” functions have created greater efficiencies and much better products.