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When we have a group of anchors to concrete, do we typically applied the spacing reduction factor for each bolt around the bolt in question? For example: If I have 5" spacing between three bolts, with a specing factor 0.75 for this spacing, then the capacity of the middle bolt would be =...

Thanks a lot connectegr.

connectegr, Thanks for your input. There is not welding at all, so this is going to be bolted on boths sides. Is this a code requirement? if so, do you know where is it stated on the code? Thanks again.

Hello, I am reviewing some drawings with steel bolted connections. The are some lateral bracings bloted on each end with one bolt. Does anyone know if there is any requirement about minimum number of bolts to place on a connection? A tech in my office says it should be at least 2 bolts, but I...

Thank you guys, under clause 3.8.3.1 of CSA S6-06, I am allowed to lower the load based on traffic conditions. I will design using the old load given that the traffic will not change (this is certified by tyhe owner of the bridge); so I am still good with the abutments.

Hello, I have to replace a 50 year-old bridge. Only the superstructure will be replace (not abutments). Since this is a new bridge I have to use the current code (CAN-CSA S6-06; this is in Ontario, Canada) which requires the bridge to be designed for a CL-625-ONT, which is over three times...

Hello, I am working with Canadian Standard CSA 086. I want to specify 4x2 joists but when I look at the table 531B for specified strengths for Light frame grades, I do not know what's the difference between Construction Grade and Standard Grade. Anyone who can help me?... Thanks!!!

Thanks SteelPE, That means that when using plastic section modulus, I am using the full capacity of a section; so if using elastic instead of plastic, am I being just conservative? or what other implications may have using one or the other?... Thanks again

Hello, What is the difference between using Elastic Section Modulus (S) and Plastic Section Modulus (Z). I am desigining a base plate which happens to work if using Z, but it does not if using S. I am working usin Limit States Dedign (Canadian Code). Thanks for any input..

Thanks Teguci, yes, we are metric but I thought that was given regardless the units... well, it makes sense but I will verify it by myself... might be the cold weather too..lol Thanks again.

Hello, I would like to know why it appears to be a big difference between the shear strenght calculated following the american code compared to the shear strenght calculated under the canadian code: American code: Vc=2*0.85*√f'c Canadian code: Vc=0.65*β*λ*√f'c where β is around 0.2 and λ=1.0...