Recent content by Factotum

Thank you all for your help. I now feel confident I can perform the calculations I require. There is a lot of uncertainty, but that's engineering :smile:.

Thanks for the suggestion. My goal is to know how much force is being applied to the wedge so I can use it to select a suitable wedge material. To do so, I need to determine the amount of clamping force exerted by whatever torque is applied; even if that torque is less than the installation...

Thank you berkeman. I have done as you recommended.

Correction to original post! In my original post, I referred to K in the equation F = T/(K*D) as “the friction of the bolt contact. (0.2 for steel)”. This is incorrect. Although friction is a dominant factor in the determination of K, characteristics of the bolt thread also play a role. Hence...

Also, is there any way I can edit my original post? I've determined that the K in the F = T/(K*D) equation is actually referred to as the torque coefficient.

What prompted me to examine the Red Head Trubolt anchor specification was my desire to know how much clamping force would be applied to a fixture when the anchor installation torque was applied. I need to design a wedge shim to allow a railing post to be installed on a 11° ramp. One idea is to...

Hi Tom.G, thank you for your reply. Here is my hypothesis. First, assume there is no external load force. Tightening the anchor nut will force the anchor clip against the concrete. The resulting friction prevents the anchor from sliding out of the anchor hole. As the anchor nut is tightened...

Hi Jack action, thank you for your reply. You are correct. Carbon steel with hot-dipped galvanizing is one type of Trubolt wedge anchor. Other types are carbon steel with zinc plating, 304 stainless steel, and 316 stainless steel. In the ITW Red Head specification, the table that indicates the...

[Mentor Note: See post #16 for a corrected/updated version of this post] https://www.physicsforums.com/threads/wedge-anchor-torque-spec-vs-ultimate-tension-spec.1056964/post-6965453 I have been reviewing the specifications for Red Head Trubolt wedge anchors. I am confused by what appears to be...

I am glad I found this forum. I am looking forward to participating. I always have questions, but hopefully I can also provide some insight.