Tender Call – Bridge File 918 in Vulcan County

INVITATION TO TENDER VULCAN COUNTY BRIDGE CONSTRUCTION AND OTHER WORK BRIDGE FILE 918, WSW 18-17-26-W4 LOCAL ROAD OVER THE LITTLE BOW RIVER WEST OF VULCAN Sealed Tenders for the Construction of a 4 span – 40 m (4 x 10 m span) type SL-510 precast girder bridge on concrete substructure will be received by Vulcan […]

Southern Alberta is flooding… again!

As of this writing, the Weather Network is reporting 72 mm of rain has fallen in Lethbridge, 59 mm in Milk River, and 119 mm in Waterton Park. Another storm system is coming from the east which will likely drop another 100 mm in Pincher Creek and 80 mm in Lethbridge.  The M.D. of Willow […]

Bridge Assessments in the Central Region

Last week we were pleased to learn that Bow Valley Bridge Services of Cochrane, AB was successful in its proposal for the provision of level 2 bridge inspections and assessments for the Central Region of Alberta Transportation, a 3 year contract.  Roseke Engineering was retained by Bow Valley to perform the assessments.  The unsuccessful proponents […]

Bridges and the New Navigation Protection Act

Today, April 1, 2014, marks the day the new Navigation Protection Act (NPA) comes into effect.  It replaces the Navigable Waters Protection Act of 1882. The new Act contains a map of navigable waterways.  If you are building a bridge on one of those, it is “covered” by the NPA and bridge owners must go […]

2014 Tri-Party Transportation Conference

Last week we attended the annual “Tri-Party” Transportation Conference in Red Deer, Alberta.  It was good to catch up with many of the suppliers, clients, and other engineers we work with on so many projects.  It was also great to hear presentations about issues affecting the industry, like the state of environmental permitting and the […]

AAMDC Convention 2014

Thanks to all of our clients (and potential clients) who stopped by our booth at the AAMDC convention in Edmonton this week. It was great to see all of you.  Here are a few pictures. I always love to get that glimpse of what’s on the minds of our clients and this is a great […]

Drainage Design in Southwestern Alberta

Alberta’s southwestern corner is a small area which produces by far the highest amount of precipitation in the province.  To see how extreme the precipitation differences are, just take a look at Alberta Transportation’s “Runoff Depth Map” (to the right; Click to enlarge) which governs one of the methods used to determine design flows for […]

Geothermal Heating: Pros, Cons, and Economics

Geothermal energy is produced from heat inside the earth. The temperature at the earth’s core is approximately 5,400 degrees Celsius (9,700 degrees Fahrenheit). From the surface, a few degrees of heat can generally be observed at depths of 20 – 30 m (65 – 100 ft), although this is highly variable. Pros Environmentally friendly Renewable […]

How to Calculate a Water Hammer

Last summer I built an underground sprinkler system for my lawn. As I flipped the switch for the first time and beamed with pride at my wonderful creation, I couldn’t help but notice the loud thud whenever one of the valves closed. Lo and behold (insert joke about engineer building projects here), this is a […]

Fluid Dynamics

Fluid dynamics refers to the study of fluid in motion. It includes fluid moving through pipes, measurements with venturis and orifices, and other motion-related topics such as lift and drag, and pumps. Reference The field of fluid dynamics is a subcategory of fluid mechanics. It’s sibling is fluid statics. In practice, the field of fluid […]