Use Rope (Dex)
Most tasks with a rope are relatively simple. The DCs for various tasks utilizing this skill are summarized on the table below.
Secure a Grappling Hook: Securing a grappling hook requires a Use Rope check (DC 10, +2 for every 10 feet of distance the grappling hook is thrown, to a maximum DC of 20 at 50 feet). Failure by 4 or less indicates that the hook fails to catch and falls, allowing you to try again. Failure by 5 or more indicates that the grappling hook initially holds, but comes loose after 1d4 rounds of supporting weight. This check is made secretly, so that you don't know whether the rope will hold your weight.
Bind a Character: When you bind another character with a rope, any Escape Artist check that the bound character makes is opposed by your Use Rope check.
You get a +10 bonus on this check because it is easier to bind someone than to escape from bonds. You don't even make your Use Rope check until someone tries to escape.
Action: Varies. Throwing a grappling hook is a standard action that provokes an attack of opportunity. Tying a knot, tying a special knot, or tying a rope around yourself one-handed is a full-round action that provokes an attack of opportunity. Splicing two ropes together takes 5 minutes. Binding a character takes 1 minute.
Special: A silk rope gives you a +2 circumstance bonus on Use Rope checks. If you cast an animate rope spell on a rope, you get a +2 circumstance bonus on any Use Rope checks you make when using that rope.
These bonuses stack.
If you have the Deft Hands feat, you get a +2 bonus on Use Rope checks.
Synergy: If you have 5 or more ranks in Use Rope, you get a +2 bonus on Climb checks made to climb a rope, a knotted rope, or a rope-and-wall combination.
If you have 5 or more ranks in Use Rope, you get a +2 bonus on Escape Artist checks when escaping from rope bonds.
If you have 5 or more ranks in Escape Artist, you get a +2 bonus on checks made to bind someone.
The character can splice ropes together quickly, tie unique knots, and even animate a rope he or she holds.
Quick Splicing: The character can splice two ropes together as a move-equivalent action.
Tie Unique Knot: The character can tie a knot that only he or she knows how to untie. This doesn't affect any Escape Artist checks made to escape these bindings.
Animate Held Rope: The character can command any rope he or she holds as if it had the animate rope spell cast upon it (except that using the skill in this way doesn't grant any bonus on Use Rope checks made with the animated rope). Each command requires a separate Use Rope check. Because the effect isn't magical, it can't be dispelled.
Source: SRD 3.5 Combined Skills