I never got one thing clear in the Strength to weight limit in D&D 3.5. It is well defined from the rules that with Strength 0, the character lies on the floor, unable to move. If Strength is 1, the weight limit a character can carry is in the order of some kilogram, say 5 kg (sorry I don't have the table at hand).
Is this amount in addition to the intrinsic weight of the character himself, or not ? In other words, is a character with Strength 1 but weighting 15 kg able to propel himself forward ?