Module Three Lifting with 60 inch Pry Bars and Cribbing

Lifting Heavy Loads Module Three Objectives  Correctly identify the three types of levers  Correctly identify the parts of the 60 inch pry bar  Correctly assemble a box crib capable of supporting 24,000 lbs of weight with no safety violations

Lifting Heavy Loads Module Three Objectives: Team Scenario  Working as a team of four personnel, raise a 4,000lb concrete block onto a platform that is 21 inches off the ground using only four 60 inch pry bars, cribbing, metal pipes, and safety equipment according to department protocols with no safety violations

Class I Lever

Class II Lever

Class III Lever

Components of a Pry Bar Lever Heel Toe

Class I Lever in action

Improper positioning of fulcrum

4” x 4” Box Crib

4” x 4” Cross Tie Box Crib

6” x 6” Box Crib

6” x 6” Cross Tie Box Crib

Grain orientation of wood members

The “Loads”

The “Challenge”

The “Tools”

Lifting Heavy Loads Module Three Practical Skills Assignment  Correctly identify the three types of levers  Correctly identify the three parts of the 60 inch pry bar  Correctly assemble a box crib capable of supporting 24,000 lbs of weight with no safety violations

Lifting Heavy Loads Module Three Practical Skills Team Assignment  As a team of four personnel, raise a 4,000lb concrete block onto a platform that is 21 inches off the ground using only four 60 inch pry bars, cribbing, and safety equipment according to department protocols with no safety violations