Iron worker final Exam with Complete
Solutions
What is the appropriate factor of safety for a ropes capacity in terms of breaking strengths?
✔️Correct Ans-10 when hoisting personnel
What is a bend or U-shaped curve in a line? ✔️Correct Ans-bight
What knot is the universal knot that never jams or slips if properly tied? ✔️Correct Ans-clove
hitch
Blocks, when Reeved, work like a machine and are not 100% efficient because of______.
✔️Correct Ans-friction
Which of the following is a sign that the blocks are being overloaded? ✔️Correct Ans-hook shows
signs of opening.
If reeving a pair of tackle blocks, one of which has more than two sheaves, which sheave should
the lead line go? ✔️Correct Ans-center sheave of the upper block.
figure 3.2 illustrates a______. ✔️Correct Ans-seven-part fall
, within the round strand classification, the wires may be arranged in certain geometric patterns
called______. ✔️Correct Ans-constructions
For rigging ropes, the minimum acceptable factor of safety is______. ✔️Correct Ans-5
Using the rule of thumb formula, what is the safe working load for a wire rope with a 1/2"
diameter? ✔️Correct Ans-2 tons
There should be at least 3 full turns of rope on the drum when the hook or load is at its______
point. ✔️Correct Ans-lowest
If a hook has been overloaded or is beginning to weaken, the______. ✔️Correct Ans-throat will
open
Spreader beams are usually used to support______loads during lifts. ✔️Correct Ans-long
Seemingly insignificant changes in sling angle drastically affects the______. ✔️Correct Ans-
loading
The load in each leg of a sling will increase as the______. ✔️Correct Ans-angle is decreased
If possible, keep the sling angled greater than______. ✔️Correct Ans-45 degrees
Solutions
What is the appropriate factor of safety for a ropes capacity in terms of breaking strengths?
✔️Correct Ans-10 when hoisting personnel
What is a bend or U-shaped curve in a line? ✔️Correct Ans-bight
What knot is the universal knot that never jams or slips if properly tied? ✔️Correct Ans-clove
hitch
Blocks, when Reeved, work like a machine and are not 100% efficient because of______.
✔️Correct Ans-friction
Which of the following is a sign that the blocks are being overloaded? ✔️Correct Ans-hook shows
signs of opening.
If reeving a pair of tackle blocks, one of which has more than two sheaves, which sheave should
the lead line go? ✔️Correct Ans-center sheave of the upper block.
figure 3.2 illustrates a______. ✔️Correct Ans-seven-part fall
, within the round strand classification, the wires may be arranged in certain geometric patterns
called______. ✔️Correct Ans-constructions
For rigging ropes, the minimum acceptable factor of safety is______. ✔️Correct Ans-5
Using the rule of thumb formula, what is the safe working load for a wire rope with a 1/2"
diameter? ✔️Correct Ans-2 tons
There should be at least 3 full turns of rope on the drum when the hook or load is at its______
point. ✔️Correct Ans-lowest
If a hook has been overloaded or is beginning to weaken, the______. ✔️Correct Ans-throat will
open
Spreader beams are usually used to support______loads during lifts. ✔️Correct Ans-long
Seemingly insignificant changes in sling angle drastically affects the______. ✔️Correct Ans-
loading
The load in each leg of a sling will increase as the______. ✔️Correct Ans-angle is decreased
If possible, keep the sling angled greater than______. ✔️Correct Ans-45 degrees
