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Ascend advocate the rope chooses basic common sense
From;    Author:Stand originally
Cord is an equipment with the most important climber, when choosing so, want discreet. The person of mountain-climbing made scale a lot of classification, cord produced business to produce different string accordingly. After you understood the article, you had basic knowledge to picking string.

The tectonic Dynamic Rope of dynamical rope
Manufacturing business is cord cent 2 kinds: Dynamical rope and Jing Lisheng. Jing Lisheng cannot lean adjustable will absorb impulsive force and more more durable than dynamical rope. It is used as course rope commonly but need not make lower part protect a rope. Dynamical rope can adjustable absorb fall off the brunt of a generation and it is to be lower part protection is absolute. The article discusses dynamical rope technically contemporary cord is formed by stringy core and coat, this kind of structure can protect cord to avoid at wearing away.

Length
Cord length is calculated commonly with rice, present 55 50 meters when had replaced the past with 60 meters of ropes. Although long string is a few heavier, but can the rock wall with a few longer ascend. The length that the manufacturer makes normally is 50, 55, 60, 70 meters.

Diameter
The diameter expresses with millimeter commonly. 15 years before, popular the diameter of 11 millimeter. Now 10.5 millimeter and the times of 10 millimeter. The diameter of a little odd even rope is 9.6 with 9.6 millimeter. The cord assurance coefficient with big diameter and durable sex are very good. Drawstring uses Yu Dengshan to protect commonly.

Weight
Weight presses a gram commonly / rice computation. Weight is better than the diameter measure an index. Do not go after the cord with choice light and small diameter.

Cord tests a level
International mountain-climbing association is allied (UIAA) the authoritative orgnaization that is standard of development cord test.

Decline
UIAA checks the standard of cord intensity to make drop test. Experiment odd rope uses 80 kilograms heavy thing, secure cord one aspect of the matter when the experiment make 9.2 feet cord declines 16.4 feet total height. Such meetings arise 1.8 decline index (declined perpendicular height divides the length with cord) . Theoretic the most serious decline the index is 2. Decline the index is higher, cord absorbs blow energy to suffer more be restricted. In the test, 80 kilograms clog one must decline, die till cord.
The environment when UIAA drop test is some stricter than climbing immediately to want truly. If decline,be in in the test the frequency is 7, not after imply declines 7 times in border indeed, you must throw away it. But if decline cord length is too long, you must consider to throw away it.

Brunt
Also want to consider impulsive force in drop test. The top level of the brunt when UIAA declines to first time is 985 kilograms.

The static state is stretchy
A string of 1 in cord one aspect of the matter 65 kilograms (176 pounds) clog, how much is the length that sees cord. Dynamical rope is when laden weight, affirmative meeting is a bit more stretchy. The standard of UIAA is 8% less than. But different in decline, cord will be stretchy in UIAA experiment 20-30% .
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