Our lab placed strain gages inside similar concrete anchor bolts and measured the bolt tension after torqueing the nut. The initial tension in the bolt relaxed significantly over the first 15 minutes; postulated to be the failure of the concrete crushed under the wedges. Torque again and the...
Where are the clothes washing machines located, or is there an adjacent laundry cleaners? An industrial front load washing machine in the spin cycle was moving coffee cups on tables on the second floor of an adjacent building in the strip mall.
Spring design and treatment is not my area of expertise, so the information found on this forum is much appreciated. I do understand some things about vibrations.
I am designing a patented prototype machine whose main component is a very large spring set capable of storing a great deal of...
