Can you get hiv from doorknobs? whether its in tact skin or not? or is hiv typically strictly human to human contact?

HIV is transmitted through exchange of body fluids, usually blood and sexual intercourse. What you described is not a risk factor for HIV transmission. For info: HIV transmission: http://www.avert.org/hiv-transmission-prevention/how-you-get-hiv?gclid=CK6P5szPq9ICFVY7gQodxYsGFw https://www.cdc.gov/hiv/basics/transmission.html

No, HIV transmission is not possible in above described scenario, respectively from inanimate surfaces, direct contact would be needed. Check cdc.gov for reliable information regarding HIV transmission.