Roof Sailing Rigging and Line Systems 3

Question 1

Which factor most directly determines the 'total fall distance' a worker could travel before stopping in a fall arrest system?

Accepted Answer

Free-fall distance plus lanyard deployment plus worker height above lower level

Answer

Total fall distance is the sum of free-fall distance, the extension of the shock absorber or lanyard, and the height of the worker's D-ring above their feet, plus a safety factor.

Question 2

When rigging a horizontal lifeline across a roof span, the anchor points must be positioned to minimize which hazard?

Accepted Answer

The swing-fall (pendulum) effect

Answer

A swing-fall (pendulum) occurs when a worker falls sideways relative to the anchor and swings in an arc, potentially striking a wall or obstacle; horizontal lifeline placement must account for this.

Question 3

What is the purpose of inspecting the rope's 'eye splice' before using it as a rigging attachment?

Accepted Answer

To verify the splice has the correct number of tucks and shows no pulled or broken strands

Answer

An eye splice must have the correct number of tucks (typically 3-4 full tucks for synthetic rope) and show no pulled, broken, or distorted strands, as defects reduce strength significantly.

Question 4

Which ANSI standard governs the design, performance, and testing of self-retracting lifelines (SRLs) used in roof rigging?

Accepted Answer

ANSI/ASSE Z359.14

Answer

ANSI/ASSE Z359.14 specifically covers self-retracting devices, establishing performance requirements for activation speed, braking distance, and strength.

Question 5

A worker notices the sheath of their kernmantle rope has a shiny, glazed appearance in one section. This most likely indicates:

Accepted Answer

Heat or friction damage that has weakened the fibers

Answer

A glazed or shiny spot on a rope's sheath indicates the fibers have been melted or fused by heat or high friction, which compromises the rope's strength and the rope must be retired.

Roof Sailing Practice Test

Roof Sailing Practice Test

Roof Sailing Rigging and Line Systems 3