A mobile crane is lifting a 12,000-pound load at a 60-foot radius. The load chart shows a capacity of 15,000 pounds at this radius. What is the maximum allowable load including rigging weight if rigging weighs 800 pounds?
Correct Answer
A) 12,000 pounds
The total load including rigging (12,000 + 800 = 12,800 pounds) must not exceed the rated capacity of 15,000 pounds. However, the question asks for maximum load excluding rigging weight, which would be 12,000 pounds as stated.
Why This Is the Correct Answer
The question asks for the maximum allowable load including rigging weight. Since the crane capacity is 15,000 pounds and the rigging weighs 800 pounds, the maximum load that can be lifted is 15,000 - 800 = 14,200 pounds. However, the question states the current load is 12,000 pounds, and asks for the maximum allowable load including rigging weight, which would be 12,000 + 800 = 12,800 pounds total system weight, but the load portion remains 12,000 pounds.
Why the Other Options Are Wrong
Option B: 12,800 pounds
This would be the maximum load possible if we subtract rigging weight from crane capacity (15,000 - 800), but this exceeds the actual load being lifted
Option C: 15,000 pounds
This is the crane's rated capacity, but doesn't account for the rigging weight that must be subtracted to determine maximum allowable load
Option D: 14,200 pounds
This represents the total system weight (load + rigging) but the question asks for maximum allowable load including rigging weight, which should account for the crane's capacity limit
Memory Technique
Remember 'RIGGING REDUCES CAPACITY' - always subtract rigging weight from crane capacity to find maximum allowable load weight
Reference Hint
OSHA 1926 Subpart CC - Cranes and Derricks, crane load chart interpretation and rigging weight calculations
More Project Mgmt Questions
What is the minimum R-value required for wall insulation in Florida Climate Zone 2?
A subcontractor brings a new chemical product to your jobsite. Under the Globally Harmonized System (GHS), what information must be immediately available to workers?
A construction site has a trench that is 8 feet deep in Type B soil. What is the maximum allowable slope ratio for the trench walls without protective systems?
What is the maximum recommended spacing between drywall screws when attaching to wood studs?
Your crew discovers suspected asbestos-containing materials during a renovation project. What is the first action you should take?
A scaffold platform is 12 feet long and 5 feet wide. If the maximum load capacity is 25 pounds per square foot, what is the total weight capacity of this platform?
Which CSI MasterFormat Division would contain specifications for fire-stopping and firesafing materials?
In tilt-up concrete construction, what is the primary advantage of this method over conventional cast-in-place construction?
Which OSHA standard specifically addresses construction industry safety and health regulations?
A structural drawing shows a beam labeled 'W12x26'. What does the '26' represent?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Related Study Resources
Previous Question
During a renovation project, you discover materials suspected to contain asbestos. What is the first step you must take according to Florida regulations?
Next Question
A window installation requires flashing and a weather-resistant barrier. In what sequence should these components be installed?