Ohh so you want to coat your meat in non-organic mineral particles. If you live in a top floor apartment, forget the barbeque. Weber's are only any good for doing a whole chicken, don't put any good meat in it.
Anywhere else find a place where you can dig a hole. put a few kilos of sand in the bottom. A stone built barbeque can also work. Use proper barbequing wood, or charcoal if you are absolutely desperate. Don't even think of starting to cook until the coals are completely red, and a little white ash is forming.
Get a stainless wire grid and roast it to within an inch of it's life, Place meat with spaces around it, only turn it once at the half way point, and no oil or condiments on the meat until it is virtually ready to eat. Remove meat, let it stand for a couple of minutes, if you have the strength of will.
Enjoy,
IG