Storm Water News
The new McLaughlin Place retail centre found the solution to meeting the local mandate of eliminating any increase in storm water runoff while maximizing the number of parking spaces. Instead of using a detention pond or sump, the designers decided to use a system of chambers under the parking lot that would collect and hold storm water runoff from the lot and rooftops. The one hectare commercial development with five buildings will open this year and is located near the Université de Moncton. Plans call for apartment buildings to be added in the future.
When dealing with a construction site that is underwater or where the water table is just above sea level, contractors have to insure that the excavation stays dry and safe for workers. This can be extra challenging where you have conditions affected by water depth and conditions such as silt and sand. Additionally, these conditions may vary based on seasonal weather or tides. It is extremely important to have contractors who have investigated historical data and who monitor fluctuations in water levels and speeds of flow, thereby decreasing risks to workers and the success of the project.
For many living in urban environments, mornings involve an alarm clock, a shower, a cup of coffee, and a commute of some sort – often including underground public transportation. However, while many are catching a subway on the way to work, not many understand how complex and vital their city’s underground infrastructure is to their morning routine. That is, at least, until something goes wrong.
Engineers from SNC-Lavalin found the way to meet stringent storm water drainage regulations for a portion of the new Centre Vidéotron site by designing two underground retention systems. Managing storm water runoff is a prime concern for Quebec City because the area is prone to flooding. The multipurpose, 18,000-seat arena, spread out over some 7.2 hectares (18 acres), opened in September 2015.
Precast concrete box sections were specified for an underground storm water detention tank to enable the construction of the Humber Mews Townhomes project on Evans Avenue in Toronto. The system was selected because it could reduce the total peak runoff being discharged from the site during all storm events. Using precast units would reduce construction costs and time. Other pre-manufactured solutions were considered, nevertheless, a precast system was selected as the preferred option. The structure met the service life requirements through the proven durability of precast concrete.
Trimble has announced the latest version of its smart water mapping and work management software—Trimble Unity 3.0. Trimble Unity is a cloud-based, (GIS) centric software-as-a-service (SaaS) solution for smart water management. Version 3.0 includes new features and workflows and also offers an App Builder and new integration capabilities to simplify connecting mobile workers with maps and data from back office enterprise systems.
The CDS hydrodynamic separator uses swirl concentration and continuous deflective separation to screen, separate and trap trash, debris, sediment, and hydrocarbons from stormwater runoff. CDS captures and retains 100% of floatables and neutrally buoyant debris 2.4mm or larger, effectively removes sediment, and is the only non-blocking screening technology available in a stormwater treatment device.
Advanced Drainage Systems, Inc. (ADS) has announced that it has added a low-profile, high strength chamber to its StormTech product line. The StormTech SC-160LP Chamber is 12-inches tall with an installed volume of 15 cubic feet of water for underground infiltration and detention systems. The new unit requires 14 inches of total cover to carry AASHTO HS-20 live loads, which reduces site development costs in shallow applications by minimizing the amount of needed fill and maximizing open infiltrative areas.
Imbrium Systems has announced the release of the new on-line PCSWMM for Stormceptor - an advanced stormwater treatment sizing and design tool. PCSWMM for Stormceptor is the fastest, easiest way to determine the most appropriate size hydrodynamic separator/ oil grit separator for your site.
Advanced Drainage Systems, Inc. announced a new on-line program for designing and estimating the cost of a stormwater system constructed with its StormTech Chambers. Available for free on www.ads-pipe.com, the ADS StormTech Design Tool enables engineers, owners and contractors to design customizable underground stormwater management systems. Designs are produced in both PDF and CAD formats, with data provided that allows users to estimate a total installed cost.
Brentwood is extending its stormwater product line with the introduction of the StormTank Arch to provide a solution for large-footprint, subsurface stormwater management projects.
Established in 2010 through the adoption of the Keswick Neighbourhood Structure Plan (NSP), Keswick on the River is a new community in southwest Edmonton, Alberta. Bounded by the North Saskatchewan River to the west and the Windermere Golf and Country Club to the north, the 200-acre neighbourhood is named for a quaint town in northwest England and features more than 1,500 homes that offer old world English architecture designed to look and feel like a country village. Future residents of Keswick on the River will enjoy riverside living, playgrounds, a nature trail system and easy access to Edmonton.
In early 2014, the Tsawwassen First Nation started construction of two mega-malls. To accommodate stormwater runoff from this 73-hectare project, a large-diameter pipeline was designed and installed under the public roads surrounding the sites. The selection of the pipe needed to take into consideration corrosion resistance, due to the salt water environment, and had to offer structural strength because of the poor deltaic soil conditions in this seismically active region of British Columbia.
The Water Environment Federation (WEF), has announced a new national municipal stormwater and green infrastructure awards program. Developed through a cooperative agreement with the U.S. Environmental Protection Agency (EPA), the program aims to recognize high-performing regulated Municipal Separate Storm Sewer Systems (MS4s) and inspire them to exceed requirements through innovative and cost-effective approaches.
CULTEC, Inc. has introduced its newest and largest chamber to the stormwater market – the Recharger 902HD. This ultra-high capacity model offers the benefit of minimizing project costs by maximizing storage volume in a given footprint. The Recharger 902HD is an ideal solution for high-volume stormwater management systems due to its lightweight maneuverability, shipping and stockpiling benefits and design flexibility.
CULTEC, Inc. has released StormGenie v.2.5, the newest version of its automated drawing program. StormGenie is a convenient AutoCAD plug-in tool used by engineers, contractors and landscape architects to quickly create preliminary stormwater system proposals and final designs and generate project-specific drawings for the company’s Contactor and Recharger stormwater chambers. The updated version of the software can now draw from both CULTEC’s Stormwater Design Calculator and HydroCAD’s Chamber Wizard.
More frequent storm events of ever-increasing intensity, which many attribute to climate change, have prompted municipalities across Canada to look at ways to guard against flooding to homes and businesses.