Tensile strength of Paracord and other cords

 

In each backpack nosieval piece cord. Every moment I need something fixed, tie, pull. Also use it when constructing shelter or bowdrille. Theoretically, a first aid either as a tourniquet, or for fixing the fracture.

Most universal cord should be Paracord. It is durable and can unravel the finer laces. But I was always sorry to cut the long Paracord when I needed a short cord. I am therefore looking for some cheap replacement, with sufficient features

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I have prepared a variety of cords. The length of approximately 50cm. I octal node ends affixed to rollers that apart slowly (1cm/min) moved away, and recorded the force applied to the cord. So slow static loading up to rupture.

Example record of tensile test for cord No.3

 

 

Description of test lines:

• 1 nylon cord from Baumax. Looks like Rep-ka but marked Not for climbing! Compact, no core. Price 0.6 EUR / m.

• 2 Paracord - stacked stone store in the attribution paracord550, but difficult to say whether this is really true data. Circular diameter of 3 mm. The core of the braid. Price 0.5 EUR / m.

• 3 Multi string of Internet armyshops. Around him there are, (like everything) so that it is camouflage. The core of the braid. String has a rectangular cross section and braid the twists and cringe. Price 0.3 E / m.

• 4 clothesline from Tesco. Compact, no core. Price only 0.06 Eur / m.

• 5 Cord for blinds. Compact, no core. Highly abrasion-resistant. I use it primarily for bowdrill. Price 1 Euro / m.

• 6 Spokes from gallery paragliding parachute. Very strong cord, which is not at knotting breaks. The core of the braid.

 

 

Evaluation tests

 

All cords will break the strangling rope at the knot. The knot on the rope while reducing the strength, but on the ground I do not use any special attachment. Just when I need to, so that there priviažem node. The table below shows the maximum value of the load that cord can withstand before it breaks before. These values ​​are the limit. So much rope must weigh less, so that we can make sure that does not break.

 

For comparison between the boats we calculate voltage. It is defined as the force exerted on the desktop. Area in this case is moot because the compact nylon cord is the braided section of the finer fibers, among them space.

conclusion

For more precise conclusion would need to make several measurements on one type of cable and then find the mean. But I think for a quick comparison, and it just so. The result is that the clothes will lead to similar load as Paracord. When stretching canvases, backpack or pulling out of the cave we Paracord substitute something cheaper.