Pin-connected Member Design - Canadian Codes

[gtmelanie]

I need some help from my Canadian engineering friends...

I've designed a lifting lug for a modular building using AISC Section D5 Pin-Connected Members to check the actual lug part of the assembly, but now my client is going to use an identical modular building in Canada, and I have to follow Canadian codes for the design. My client's customer (Canadian company) will be reviewing the design, so I have to follow their standards. We have purchased every Canadian code we know to purchase, but I can't find a comparable design methodology anywhere. Does anyone know where guidance for this type of design would be found?

Thanks in advance!
gtmelanie

 

[BAretired]

I think OSHA would prevail in Canada as well as the U.S. for safety factors, but maybe others could confirm that.

As far as presentation of calculations, Canadian codes recognize LSD (Limit States Design) so if you have used ASD, you will have to redo it in LSD. Probably CSA S16.1 would apply to your situation.

BA

 

[dhengr]

It would really be helpful if you gave us an idea (sketches, etc.) of the lifting detail you have already designed; loads, rigging system, connection to the modular structures, etc. The theory and thought process behind eyebars in AISC would be applicable, but pin or bolt connected plates less-so. ASME BTH-1 (Design of Below-the-Hook Lifting Devises) has some good material on padeyes, and would be applicable. One difference is that your devices must be safe, of course, but are only used a couple times in the life of the structure; while eyebars and padeyes are use ,or loaded, many times and are subject to abuse and fatigue.

 

[gtmelanie]

Well I don't have access to the drawings this evening, and I don't have access to a scanner for a sketch, but it's a lug plate as described in D5 (Spec and Commentary) and satisfying the dimensional requirements of D5.2 and Figure C-D5.1, so I feel pretty confident I've used the correct procedure. The buildings are only lifted a couple times - once when placed on the truck to ship, and again when lifted into place on site - and the lugs are only required to lift the dead load of the building + equipment and other miscellaneous items. I made sure there was a total safety factor of 5 in the design to meet general lifting device standards, even though the D5 procedure doesn't require it. We completed this design for another modular building that was used in the U.S., and that design has been reviewed and checked by other engineers and previous clients. The issue is, I can't use any American codes for the building going to Canada. I've completed the entire design using Canadian codes, but I just can't find something specific to address the lifting lug. BA, I checked the S16-01 in the CISC...but the information about "pin-connected members" is EXTREMELY brief, and it doesn't go through a procedure like the AISC does, so I'm just confused. I know generally I should check the same things I've checked per AISC, but I'm trying to figure out how to substantiate that, and how to document it in my calculation package. This is the whole issue because I'm confident the design works safely. Anyway, thanks to both of you for your responses. I really appreciate your time.