Canada design windspeed map
Canada design windspeed map
(OP)
I am looking for a map of Canada showing design windspeed map for use with structural designs of signs and light post.
Can any body point me to a good resource. My google search did not result anything useful.
Can any body point me to a good resource. My google search did not result anything useful.






RE: Canada design windspeed map
RE: Canada design windspeed map
RE: Canada design windspeed map
Those can certainly be translated into windspeeds, but you have to do some screwing around to get something comparable to the ASCE values from a couple of years ago. I don't remember what it is off the top of my head, but I think it's the duration of the reference event that's different. It's not quite plug and play. Then, on top of that, the design pressures definitely aren't compatible with anything expecting the current ASCE wind methodology.
If you're thinking you can just plug a windspeed into a US code or design formula and get the same level of safety, you could end up in trouble. You'll either need to get to a final pressure using the Canadian methods and load factors, or spend some time reading about how both the US and Canadian numbers are derived and translating between them.
RE: Canada design windspeed map
RE: Canada design windspeed map
Anyways, I guess I may have to buy a copy. I want to be able to publish a wind map on out company website. Not sure if I will have to get their written permission.
RE: Canada design windspeed map
I don't know anything about the legality of taking the wind tables from the NBCC and creating an interactive map out of them. You'd have to talk to an intellectual rights lawyer about that.
RE: Canada design windspeed map
RE: Canada design windspeed map
RE: Canada design windspeed map
Putting a table on your website that says the 'Code Design Hourly Wind Pressure' for somewhere is 0.57kPa could be even worse, because you might get a person that doesn't know any better taking that number and multiplying it by the sign area, then designing for that. In reality, the actual design number could be 4+ times that value for a sign after using various co-efficients.
If you're going to develop ratings for your poles based on Canadian values as well, then that's great. But then you're going to need a Canadian engineer and a copy of the code at a minimum. If you're not, then just don't provide the Canadian values and let Canadian engineers work out the appropriate rating to buy to meet local code requirements.
RE: Canada design windspeed map
RE: Canada design windspeed map
A confused student is a good student.
Nathaniel P. Wilkerson, PE
www.medeek.com
RE: Canada design windspeed map
It has the climactic data and load calculations there for Canada.