when I'm playing minecraft version 1.11.2. then when i'm wating the loading appear a message like this "Buildcraft Lib is missing mods or remove buildcraft lib.
forge 13.20.0.2296(but i'm using forge 13.20.0.2228)" and this is fml.latest log https://drive.google.com/open?id=0BxXJGV63iQnURmZOUktFOFJfbDA) and sorry for my bad grammar :3

that was i'm reparing :3

Log link looks broken. And can you post screenshot of your launcher settings?

you need to update your forge to atleast .2296 like the message sais, BC won't work with anything older