Tag: concrete

Concrete is a composite material composed of aggregate bonded together with a fluid cement which hardens over time. Most use of the term “concrete” refers to Portland cement concrete or to concretes made with other hydraulic cements. However, technically road pavement is also a type of concrete, “asphaltic concrete”, where the cement material is bitumen.

Underground Stormwater Storage Case Studies

Underground Stormwater Storage Case Studies

Underground retention and detention systems continue to increase in popularity as urban and suburban infill prompts careful consideration of proposed land uses on high-value real estate. Placing stormwater management underground frees up space for higher value land uses and greater return on investment. Additionally, trends toward water awareness and reclamation,

Innovations in HVAC

Innovations in HVAC

HVAC duct systems play a key role in indoor air quality and comfort as they serve the functions of supplying, returning, and ventilating air. The type of system can underscore its efficiencies. Case in point: the shape of the duct always makes a difference in terms of efficiency, notes Roger

HVAC Innovations

HVAC Innovations

HVAC duct systems play a key role in indoor air quality and comfort as they serve the functions of supplying, returning, and ventilating air. The type of system can underscore its efficiencies. Case in point: the shape of the duct always makes a difference in terms of efficiency, notes Roger

Retaining Wall Project Profiles

Retaining Wall Project Profiles

Retaining walls have become so much a part of our environment that most people barely notice them. However, professionals realize how much they have changed over the years and what an asset they have become. The ability to provide strength and integrity makes some projects possible that once would have

Machine Control and GPS—Key to Efficient Site Operations

Machine Control and GPS—Key to Efficient Site Operations

Modern earthmoving operations require a contradictory balance. They must combine the brute force of massive earthmoving in order to maximize productivity, with the finesse of accurate control so as to minimize the cost of unnecessary soil removal. The brute force part is easy to visualize in any piece of heavy equipment

The Costs and Benefits of Anaerobic Digesters

The Costs and Benefits of Anaerobic Digesters

Anaerobic digesters are a mature, proven technology. They take sludge, manure, and other organic waste materials and produce methane (natural gas) fuel. Nobody questions their technological capabilities. However, the question remains as to their economic benefits. In terms of dollars and cents, how much economic sense do anaerobic digesters make?

StormCon Program

StormCon Program

StormCon 2017, the Surface Water Quality Conference & Expo, will take place August 27–31 in Bellevue, WA, at the Meydenbauer Convention Center and Hyatt Regency Hotel. The conference features more than 130 presentations in six conference tracks, plus panel discussions and a tour of local stormwater facilities.
The schedule of presentations

Catching Up

Catching Up

In the 1940s, two former music hall entertainers, Marcel and Nelly Tilloy, purchased an estate in France’s Rhône ­Valley, and by 1952 they had created Relais and Châteaux, with eight hotels and restaurants between Paris and the French Riviera. Today, the association has more than 520 partners around the world.

Inlet Protection for Storm Drains

Inlet Protection for Storm Drains

If a stream or other waterbody is showing an increase in sediment or pollutant contamination, nearby active construction sites are usually the first suspect. As any developer or construction crew chief knows, devices to stop runoff from the site are an absolute necessity.

Taking Stormwater Storage Underground

Taking Stormwater Storage Underground

Underground retention and detention systems continue to increase in popularity as urban and suburban infill prompts careful consideration of proposed land uses on high-value real estate. Placing stormwater management underground frees up space for higher value land uses and greater return on investment. Additionally, trends toward water awareness and reclamation,

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