I had a new, old stock SRAM 10 speed triple crank installed recently on my 11 speed bike. Attachment 18114

The builder used the 30t chainring with an added 44t chainring. No third chainring used. I have the option to go with a 46t. It just wasn't available at the time. My cassette is a 12-36. For some reason the Force 22 rear derailleur wouldn't work well, but the Rival one does. So far, the 44t seems enough for the riding I've been doing. I found this to be helpful when I was trying to understand this subject... http://www.peterverdone.com/spider-attack/