While working as an ICC bolting inspector I have seen the requirement of deform the bolted assemblies to prevent back-off. Typically the engineer has suggested that a center punch be used "once or twice" to deform the metal at the juncture of the threaded item and the nut as long as the...
@Rinku12, Northern Ontario receives less freeze/thaw cycles than Washington, DC where they routinely specify 5% +/- 1%. 4.5% air content will not be an issue I suspect, adding a disclaimer that I am not an engineer, just experienced with placing concrete.
To help others to answer your question...
1. How was it determined that there is excess CO2 in the atmosphere?
2. Haven't ice cores and ocean sediment sample found higher and lower CO2 concentrations in the past?
3. Didn't James Croll explain that the wobble of the earth, the feedback of snow reflecting heat back into space, and the...
I am a hobbyist refiner. I have been gifted with about 1 kg of gold plated pins. I would like to leach the gold using something like thiourea rather than cyanide. I have found papers that recommend adding acid without mention of which one, and oxidizers (again without mentioning which one). Can...
Google/duckduckgo is not helping me find what I need. I am trying to find a way to recycle furniture that is made up of wood chips/flower, epoxy resin with a plastic veneer. Currently, the only alternative I see is either sending such products to a waste heat plant or a landfill. Neither...
