The use of form traveller systems offers significant cost savings for bridge construction projects throughout the world. We've partnered with Miguel Barreto from ConstruGomes of Portugal to highlight the key aspects of form traveller systems: how they offer cost advantages over traditional construction systems, in what situations they can best be utilized, and how they function.

Information on low-flow plumbing fixtures abounds, and low-flow and waterless urinals are now in widespread use. Flush volume for toilets has evolved to 1.6 gallons per flush, or less than half of the 1980s' standard of 3.5 gallons. The fact that low-flow fixtures can save money in utility costs is clear and easy to calculate with a review of a water bill and an estimate of each fixture’s cycles per month. An enticing payback period for a new fixture purchase can be calculated based on water use alone. However, some facility managers argue that the utility savings offered by these plumbing fixtures are not matched by the unforeseen maintenance and repair costs that they generate. The question of whether low-flow plumbing fixtures offer a good return on investment (ROI) arises.

Improvements in horizontal well drilling and subsurface rock fracturing technologies have greatly enhanced natural gas production in North America over the past several years. These technologies have significantly increased our known natural gas reserves in shale plays across the U.S., the largest in many ways being the Marcellus Shale. Natural gas trapped in the Marcellus Shale formation throughout southern New York, northern and western Pennsylvania, eastern Ohio, western Maryland, and most of West Virginia can now be economically recovered and marketed. The Marcellus Shale formation serves as a good illustration for this industry boom. Jim Daley of Greenhorne & O’Mara Consulting Engineers helped Buildipedia.com investigate the basic engineering considerations of natural gas drilling and collection systems, along with the more traditional construction tasks required by this industry: surveys and stormwater management, as well as road, bridge, and pipeline construction.

Buffalo Township’s wastewater treatment plant is located along Buffalo Creek in Pennsylvania, beneath the State Route 28 bridge. This type of wastewater treatment plant is perfect to serve smaller communities. It supports 6,000 people with 3,100 sewer connections to homes and businesses throughout Sarver, Pennsylvania, and the vicinity. It’s an excellent example of an efficient wastewater infrastructure that uses extended aeration to treat raw sewage, without any initial sedimentation.

Located in Freeport, Pennsylvania, about a 30 minute drive north of Pittsburgh, Buffalo Township’s water treatment plant produces over 700,000 gallons of fresh water daily. The plant provides drinking water to over 5,000 residents in Buffalo Township and Freeport Borough. It is also the fresh water supplier for the Municipal Authority of South Buffalo Township. Join Buildipedia for a photo tour of Buffalo Township’s water treatment plant, as we trace the flow of water from the Allegheny River to its distribution throughout the utility.

Baldwin-Wallace College in Berea, Ohio, is in the midst of a $20.6 million -- $1.2 million of which represents the information technology (IT) portion -- construction project that will double the physical size of its Conservatory of Music. Expected to be completed by the fall of 2011, the project includes major renovations and new construction; joining two existing campus buildings with the adjacent church complex. Upfront planning is crucial to ensure a good IT installation that meets all the needs of their students and professors and wisely uses capital funds. Here are the basic concepts involved in IT system planning and infrastructure. Greg Flanik and Daniel Stilla from Baldwin-Wallace’s IT department provided Buildipedia a look into the planning and technologies involved in getting their new building “wired for sound.”

Summersville Dam, in south central West Virginia, is the second largest rock-fill dam in the eastern United States and exemplifies the way a dam can provide multiple enhancements, such as recreational activities, flood control, and electricity generation, to the local community.

Zach Kent is a stormwater engineer for Modular Wetlands in Oceanside, California. We learned about Modular Wetlands’ urban wetland unit in our case study, “Water Quality Retrofit and Retaining Wall Remediation.” We've partnered with Kent to provide a perspective on some dynamics within the stormwater management industry over the last decade, including new processes and technologies designed to meet higher regulatory standards.

The City of Takoma Park, Maryland, needed to replace a failing retaining wall that supports a roadway in a small residential development. The Linden Avenue site is directly adjacent to Sligo Creek, which is a tributary of Anacostia Creek, a river undergoing a significant restoration effort. T. E. Scott & Associates, Inc., designed a replacement for the failing retaining wall infrastructure, created a pocket park for the local residents, and provided water quality treatment for the unmanaged watershed. This combination of aesthetic and environmental improvements adds value to the project. We’ll look at some stormwater flow design calculations, a storm water flow splitter, an urban modular wetland unit, a step/plunge pool, and an interesting retaining wall design.

Michael Hughes is Chief of the Construction Department for the Cuyahoga Metropolitan Housing Authority (CMHA) in Cleveland, Ohio. He’s also one of the people most familiar with CMHA’s Building Automation System (BAS). In this lead article initiating a case study with CMHA, we’ll provide a summary overview of their BAS, which was installed by Siemens Building Technologies. In future articles, we’ll take some more in-depth journeys with Mr. Hughes into the BAS, including the daily use of the system. Throughout this series, we’ll cover some detailed time and cost-savings scenarios that BASs offer to building owners.