TREE Fund Webinar -- Loading of a Tie-in Point While Climbing

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Please take this quiz after watching the "Loading of a Tie-in Point While Climbing" recorded webinar on the TREE Fund website. You will need to receive an 80% accuracy (16 correct answers) in order to qualify for CEU credit from the International Society of Arboriculture. TREE Fund will submit your passing score to ISA for CEU credit on your behalf.

Email *

Name *

Please provide your ISA Certification #. *

What factors does a climber consider when selecting a TIP (tie-in point) *

1 point

Height of the TIP

Diameter of the TIP

Presence of defects

All of the above

Which of the following statements is false *

1 point

Drag is force

Weight of a tree is a force

Drag is a torque

Weight of a climber is a torque

How do you calculate a torque *

1 point

Force X Distance

Force X Mass

Mass X Acceleration

All of the above

Which of the following is a magnitude of loading? *

1 point

6 in.

700 psi

431 dB

None of the above

Which of the following is a duration of loading? *

1 point

6 milliseconds

10 minutes

15 years

All of the above

Which of the following is a frequency of loading *

1 point

0.6 loads per second

0.6 psi

.06 seconds

None of the above

For experiments involving a canopy anchor stationary rope system (SRS), *

1 point

We measured rope tension and doubled it to compute load at the TIP

We measured rope tension at the TIP using a load cell

We measured rope tension in both ends of the rope and added them to compute load at the TIP

None of the above

What is load time history? *

1 point

A record of the magnitude of force for a period of time

A record of the loading frequency

The clearest was to compute load duration

All of the above

Based on load time histories presented, *

1 point

The frequency of peak loads was greater for footlocking than using foot and knee ascenders

The frequency of peak loads was greater when using foot and knee ascenders than footlocking

The frequency of peak loads was similar for footlocking and using foot and knee ascenders

Load frequency is not as important as load magnitude

On a limb walk, what proportion of the climber's weight did the branch carry when the climber paused while standing at the branch station? *

1 point

82%

74%

18%

On tests that simulated a climber falling, what was the maximum ratio of measured TIP load to weight of the barbell plates? *

1 point

3.2

3.9

10.8

It depends on friction between rope and bark

Which factor most influenced the magnitude of loading during climber ascents? *

1 point

Climber weight

Ascent technique (footlocking vs. foot and knee ascenders)

The type of rope used

All of the above

On tests simulating climber falls, how long did the maximum load last? *

1 point

Impossible to tell because the video clip was in slow motion

Less the 0.1 seconds

You can count the number of loads during the time history to determine it

None of the above

What was the maximum load recorded during an ascent while footlocking on a canopy anchor SRS *

1 point

200 lbs.

250 lbs.

275 lbs.

None of the above

Complete the sentence, "On a basal anchor SRS, *

1 point

TIP load is double the tension in the running end of the rope

TIP load is double the tension in the working end of the rope

Tension in the running end of the rope is affected by friction

Tension in the working end of the rope is double the tension in the running end of the rope

On tests simulating a falling climber, which of the following statements is true? *

1 point

The rope for which the ratio TIP Load / Drop Weight was consistently least for Super Static

It would be difficult to cause a TIP to fail during a fall

A rope with elasticity of more than 10% is safer to climb on

All of the above

If a climber unexpectedly fell during an ascent, which of the following statements is true? *

1 point

The length of rope in the climbing system does not affect the likelihood of failure

Regardless of the rope used, having more of it between the climber and the TIP reduces the ratio TIP Load / Drop Weight

A basal anchor SRS would reduce the likelihood of TIP failure

None of the above

Why would swinging to a branch station cause more load at the TIP than walking to the branch station?

1 point

Walking causes the rope to stretch more, so there's less acceleration

Walking causes the TIP to bounce more, so there's less acceleration

Swinging involves greater acceleration because the climber is moving faster

All of the above

Clear selection

You watched a video clip showing a bear bouncing on a tightrope. A load cell at one end of the tightrope measures 10 peak loads of 400 lbs. in 30 seconds. What is the frequency of loading *

1 point

0.3 loads per second

3 loads per second

30 loads per second

Frequency of loading isn't as important as magnitude of loading

During the limb walk experiment, did the climbing technique or climbing line affect the ratio TIP load / Climber's Weight? *

1 point

Yes, values for Samson Mercury were greater than Yale Tropical Ivy

Yes, climbing on a stationary rope system causes smaller values than climbing on a moving rope system

Yes, adding friction to a moving rope system reduced values compared to a moving rope system without friction

No, nearly every value was the same

Submit

Clear form

Never submit passwords through Google Forms.

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms