31. When using two slings to rig up a load, what is the optimum safe sling angle?

• A.30 degree

• B.45 degree

• C.55 degree

• D.60 degree

32. To protect against forward stability failures, mobile cranes are capacity rated at levels ____ the tipping point.

• A.at

• B.above

• C.below

• D.well below

33. In demolition and underground construction, an accessible fire extinguisher of ____ rating, or higher, must be available at all operator stations or cabs.

• A.5AB

• B.5BC

• C.6AB

• D.6BC

34. Which of the following isn’t impacted by a dynamic load?

• A.structural stability

• B.ground pressure

• C.increased load radius

• D.increased boom length

35. When must rigging equipment for material handling be inspected?

• A.prior to use on each shift

• B.as necessary during its use to ensure that it is safe

• C.A and B

• D.neither A nor B

36. Defective rigging equipment shall be ____.

• A.repaired prior to the next shift

• B.repaired immediately

• C.removed from service

• D.inspected

37. Lifting accessories shall be proof-tested prior to use to ____ percent of their rated load.

• A.100

• B.110

• C.125

• D.150

38. Crane capacity charts used by cranes on barges are provided by ____.

• A.load charts

• B.list charts

• C.tip charts

• D.tip tables

39. In demolition work, ball weights should be limited to not more than what percent of capacity at the maximum radius?

• A.15

• B.25

• C.50

• D.75

40. In the event of heat damage, torch burns, or electric arc strikes, wire rope should be ____.

• A.repaired

• B.re-wound

• C.replaced

• D.refined