SHOP NOW FOR GEAR
Login
Join Rigging Lab

FALL FACTOR

Written By: Lance Piatt

fall factor in rigging systems

This is a re-post from RopeLab.com.au and Richard Delaney

Fall Factor

The term ‘Fall Factor’ (FF) is often used to describe the ratio of the distance fallen to the amount of rope in the system that is available to absorb the energy associated with arresting the fall.

Fall Factor = Distance fallen ÷ Rope in service

This term probably originated from rock-climbing and an effort to describe the relative severity of the impact felt by the leader during a fall.  It is now used by many rope technicians, but we must remember that it is only an approximate indicator and it is often incorrectly applied when attaching to other non-rigid systems.

Fall-Factor

This image shows a range of possible fall scenarios:

  1. The 1m lanyard is tight to an overhead anchor thus no fall is possible and this is effectively FF0.
  2. The ends of the lanyard are attached to the harness and an anchor at the same height.  The operator can fall 1m on a 1m lanyard so this is FF1.
  3. Now the 1m lanyard is anchored down at foot level and thus a 2m fall is possible. This is FF2.
  4. This time the 1m lanyard is attached to sperate rope which runs another 1m straight up to an overhead anchor.  Now there are 2m of rope in the system to absorb the impact of the 1m fall so this becomes FF0.5.
  5. This final situation is unusual but sees the lanyard clipped to a vertical cable.  Now the operator can fall 3m on their 1m lanyard which gives FF3.  This would be a very dangerous fall.

This ratio is a reasonable indication of the severity of a fall.  However, it should only be used as an indicator as it is difficult to account for the following factors:

  • Knot tightening.
  • Places where there are multiple strands of rope, such as the bight of the knot attached to the anchor sharing the force of impact.
  • Flex and movement of static elements within the system.
  • Friction between the rope and any intermediate connectors.

Thus, FF is usually expressed in simple ratios like FF2, FF1, FF0.5, and perhaps FF0.2.

© Richard Delaney, RopeLab, 2016
Categories

About The Author:

Lance Piatt

Lance Piatt

203 thoughts on “FALL FACTOR”

  1. fake tag heuer swiss fake

    963720 50691Wow, superb weblog structure! How long have you been blogging for? you make blogging glance straightforward. The total look of your web website is outstanding, neatly as the content material! 16933

  2. M11-a1 Compact Review

    115300 819779This article is dedicated to all people who know what is billiard table; to all those who do not know what is pool table; to all people who want to know what is billiards; 120008

  27. AccoubNof

    cheap generic cialis The Native Knowledge website contains 7 years of data on Alaska Traditional Knowledge and Native Foods and provides contaminant data, harvest data, consumption data, nutrition, and community harvest descriptions, Native knowledge network, research on contaminants, research-based knowledge, and Native concerns for each village in Alaska

  29. flopymn

    viagra paracetamol sos meaning in hindi It also cut its world growth forecasts for the sixthstraight time in less than two years, saying a strongerperformance in the most advanced economies would not make up forsluggish expansion in the developing world. clomid and cialis

  116. 이천반영구

    609768 990893Thoughts talk within just about the web control console video clip games have stimulated pretty professional to own on microphone as well as , resemble the perfect tough guy to positively the mediocre ones. Basically fundamental difficulties in picture gaming titles. Drug Recovery 912462

  127. Daf

    $26 No Deposit Bonus At Treasure Mile, all newcomers are greeted with a fabulous Treasure Mile Casino sign up offer. To make it clear, a Treasure Mile Casino new customer offer includes extra spins and extra money for your favourite games. There is nothing complicated about activating a  Treasure Mile Casino welcome offer. Bonus code available for new and existing players.Wagering requirements: x60.Max cash out: $100.Games allowed: Millionaire’s Life slot.Expiration date: 01 01 2021.New exclusive coupon from Treasure Mile Casino, use the bonus code and claim 50 free spins from this online casino Test your cashier to redeem the bonus Pennsylvania casinos poconos for them, but the players should make sure to use it at high limit tables. The dealer button rotates clockwise to the next player, PaySafecard y PayPal. This machine has pretty much all the arcade games from the 80’s and 90’s you won’t get bored for a couple of years, in states where William Hill is licensed to offer online sports betting. Well, you can make safe deposits and bet for real money. Having tried an interesting game, and the slower the wheel rotor. I applied there once, the more predictable spins are. https://lingo.az/community/profile/briannaillingwo/ With no downloading required, you can now play your favorite slot machine game for free from any device! Simply login with your email address or Facebook account and play! Discover the thrill without the hassle! You no longer have to pay to be entertained! Play for free today to win the ultimate Jackpot! It isn’t complicated to register for ResortCasino.com. The site may offer few bonuses to new players but does offer a wide variety of payment options and a complete selection of fun online casino games that you can play from your personal devices. As far as promotional bonus packages go online, this is about as good as it gets under one virtual roof. Here, in addition to its grand casino welcome bonus, you will find daily promotional offers providing you with up to $3,000,000 in daily games, plus a $1,000 weekly draw. Casino bonuses with a prize pot of up to $750, 100 free spins, Spotlight Slotlight, Resorts loyalty card, tiered rewards upgrades, parlay bet promos, weekly free bets and up to $250 risk free.

  152. Brucejat

    Whoa loads of good facts!
    web medical information [url=https://canadapharmacyspace.com]canadian drugs online pharmacies[/url] aarp approved canadian online pharmacies

  159. Sean Plamondin

    Its like you read my mind! You appear to know so much about this, like you wrote the book in it or something. I think that you could do with a few pics to drive the message home a bit, but instead of that, this is fantastic blog. A great read. I’ll definitely be back.

  176. JamesFlash

    A 200mcg tab costs her about ВЈ5, making each microdose come in at 30p. Given the irregularity with which she microdoses, she estimates that she is spending about ВЈ2 a month. “If the impact on my life is finally finding a way out of depression, then I’m comfortable making that choice,” she says. It is believed that this effect is because microdosing helps to decrease the stress of daily life, improve mood, increase cognition and focus, reduce the rating of perceived exertion, and because it aids in ego dissolution. Ego dissolution is the “complete loss of subjective self-identity,” which is a criticial aspect for researchers when looking at psychedelic-assisted psychotherapy and psychosis (Nour et al., 2016)  “We don’t know very much about microdosing, but at least some of the time it might be expectation and intention that leads to change, not microdosing,” he explains. https://www.bradfordirish.com/community/profile/milagrol1700089/ LSD, peyote, psilocybin, and PCP are drugs that cause hallucinations, which are profound distortions in a person’s perception of reality. Under the influence of hallucinogens, people see images, hear sounds, and feel sensations that seem real but are not. Some hallucinogens also produce rapid, intense emotional swings. LSD, peyote, and psilocybin cause their effects by initially disrupting the interaction of nerve cells and the neurotransmitter serotonin.1 Tap a body part to learn more of the effects hallucinogens places on your body. Psychoactive drugs include all manner of hallucinogens, deliriants, hypnotics and psychedelics. But what is a psychedelic, really? Insofar as many in the field are now moving toward bringing new molecules with presumably desirable introspective properties into a larger, potentially druggable populace, there is a palpable need for increased clarity.

  191. ZERLY

    Bei Mr Green werden Sie einige der weltweit beliebtesten Online Slots finden, da in unserem riesigen Sortiment sowohl altbekannte Klassiker als auch moderne Slot-Varianten zu finden sind. Wenn Spielautomaten Neuland für Sie sind, würden wir Ihnen empfehlen, zuerst unsere Liste mit den meistgespielten Slots durchzuschauen. Die Spielautomaten in dieser Liste bieten aufregende Bonusfunktionen und die Chance auf große Gewinne. Bevor Sie sich in bester Laune ins Spiel stürzen, ist es zwingend notwendig, sich mit den Grundbegriffen des ausgesuchten Slots vertraut zu machen. Zum Beispiel, wer ist der Designer? Wie hoch oder niedrig sind die Einsätze? Was ist mit dem Thema des Spiels? Casino Spielautomaten erscheinen in zahlreichen Themengebieten wie zum Beispiel Romantik, Kriegsführung, Weltraumeskapaden, königliche Themen und sogar Mythologie. Suchen Sie sich den Slot aus, dessen Thema Sie wirklich begeistert. Slotautomaten gibt es mit unterschiedlich gestalteten Walzen und Auszahlungslinien, seien Sie sich also im Klaren darüber, wie viele Linien Sie aktivieren möchten und welche Summe Sie gewinnen können, wenn das Glück auf Ihrer Seite ist. https://www.carhubsales.com.au/user/profile/713251 Eigentlich ist es möglich, dies mit Book of Ra Tastenkombination zu machen. Dazu brauchen Sie aber ein bisschen Geduld. Genau wie bei den Book-Of-Ra-Slots geht es auch beim Book Of Ra Deluxe Bingo zuallererst natürlich um Spielspaß. Daher gibt es auch keine geheimen Tricks, mit denen die Maschinen überlistet werden können. Was aber nicht heißt, dass man nicht durch Können an seinem Kontostand feilen kann, schließlich erfordert vor allem die Kauf-Entscheidung bei den Extra-Bällen doch ein wenig Nachdenken. Everyone knows that Mega Moolah is one of the all-time favorite slot games in casinos everywhere, but it is only leading in popularity by a small margin; the Book of Ra is not far behind and is rapidly closing the gap. Players new and old are loving the ancient Egyptian theme.

  193. accommodation

    I got what you intend, appreciate it for putting up.Woh I am thankful to find this website through google. “Wisdom doesn’t necessarily come with age. Sometimes age just shows up by itself.” by Woodrow Wilson.

  196. dok

    Bonus do ruletki: Pomiędzy 1 a 100 obrotów ruletki, funkcja bonusowa ruletki zostanie aktywowana. Wszystkie wypłaty zostaną wtedy podwojone! Jest to wspaniała nagroda dla graczy ruletki CSGO, którzy uwielbiają obstawiać. Niewiele stron z zakładami CSGO oferuje takie bonusy, co sprawia, że Gamdom jest jedną z najlepszych stron z grami CSGO. Ale to nie wszystko, powiemy Ci więcej w tej recenzji gamdom. – darmowe 500 coins z kodem: BAWARA1 Nowi użytkownicy w najlepszych witrynach hazardowych CS GO otrzymują zachęty, które mają ich zachęcić do postawienia większej ilości zakładów. Możesz przekształcić bonus w prawdziwe pieniądze, jeśli wydasz je prawidłowo. Lub zaloguj się za pomocą jednego ze swoich kont Unikalna oferta Tak jak mówiłem, skrypt jest bardzo prosty w użyciu. W zaznaczonym miejscu podajesz, ile “bot” ma poświęcać coinsów na jeden bet. Rekomendowane przez nas jest 10. Od teraz skrypt, kiedy będzie włączony, potawi 10 coinsów. https://community.jachoos.net/profile/ulyssestuggle98/ Oto Soho! – planszowa gra, w której trudno doszukiwać się choćby krzty niewinnej zabawki dla dzieci… To prawdopodobnie najbardziej zmysłowa zabawa, jaką możesz zapewnić sobie i partnerowi w długie, niekończące się zimowe wieczory! Wymiana domu z anglią kobieta szuka relaksu w barcelonie kontaktuje się z kobietami milanuncios międzyrasowe serwisy randkowe całkowicie za darmo w języku lanus Gry dla tagu “Dla dorosłych”: Wymiana domu z anglią kobieta szuka relaksu w barcelonie kontaktuje się z kobietami milanuncios międzyrasowe serwisy randkowe całkowicie za darmo w języku lanus Alkoholowa ruletka jest świetnym i bezpiecznym sposobem na połączenie niewielkiej ilości hazardu z alkoholem i zabawą Zestaw zawiera typowa ruletkę, 2 metalowe kulki i 16 szklanych kieliszków oznaczonych kolorem czarnym lub czerwonym Ruletka jest świetnym prezentem z okazji ślubu, urodzin na osiemnastkę, wieczór kawalerski, panieński.

  197. situs web

    Nice post. I learn something new and challenging on blogs I stumbleupon every day. It will always be exciting to read through articles from other writers and practice a little something from their sites.

  203. StealthMusicUK

    I absolutely love your site.. Excellent colors & theme. Did you create this site yourself? Please reply back as I’m wanting to create my very own website and want to know where you got this from or just what the theme is named. Thanks!

Comments are closed.

Helpful Links

Courses

Copyright (c) Red Ibex Solutions | Powered by Red Ibex Marketing Solutions

Privacy Policy