Is the bulb formed integrally with the WT, or it is added through other means. You should be able to calculate the sectional properties for either case. Or is this a commercial product?
I couldn't find bulb tee properties on the site, but I would call or email these people. The Tectum site lists them as manufacturers of bulb tees. From memory, I think the W178 means the tee is 1 7/8" high.
Below is a link to a site contains info on "Bulb Tees". However, it uses different dsignation system as compared to yours. Wish this helps as a lead in further look into this matter.
Thanks for your help, everyone. I don't think that this size is still in production, but I will try contacting Western and see if they have any info for me.
Kelowna, that is not quite the shape that I'm referring to. Check out the link posted by kslee and that will get you on the right track, although the flange is not tapered on the inside face and the "bulb" end is pretty square; not like a flange.
Glad you found the data. We used to use a lot of those in the 60's and 70's in gymnasium roofs. Tectum and Insulrock panels (wood fibre bound with cement) spanned between the double tees, and the space between the panels and double tees grouted. This might be a useful addition to SlideRuleEra's site.
