1
NCCCO Core Practice Exam
(2025/2026 Update) Questions
and 100% Correct Verified
Answers | Grade A
Load Chart Interpretation (Questions 1-20)
1. When using a load chart for a lattice boom crawler crane, what
does the term "on-rubber" lifting capacity refer to?
• A. Lifting with outriggers extended on soft ground
• B. Lifting with rubber tires supporting the load
• C. Lifting without outriggers, using tires for stability
• D. Lifting on rubber mats to distribute weight
Rationale: "On-rubber" capacities are specifically for lifts where the
crane is not using outriggers and relies on its rubber tires for support,
typically at reduced capacities to account for stability limitations. This is
critical for understanding chart deductions in mobile crane operations
per ASME B30.5 standards.
2. For a telescopic boom truck crane, if the load radius increases
from 20 ft to 25 ft at 50 ft boom angle, what is the primary effect on
capacity?
• A. Capacity increases proportionally
• B. Capacity remains unchanged
• C. Capacity decreases due to increased moment arm
• D. Capacity doubles for safety margin
, 2
Rationale: Load capacity decreases as radius increases because the
load's moment arm lengthens, creating greater torque on the crane. Load
charts reflect this inverse relationship, emphasizing the need for precise
radius measurement during pre-lift planning.
3. What auxiliary equipment is typically required to read gross
capacity from a load chart?
• A. Jib offset angle
• B. Effective boom length and angle
• C. Counterweight configuration only
• D. Reeving multiplier
Rationale: Gross capacity is determined by intersecting the boom length
(or effective length with jib) and angle lines on the chart. This
foundational step ensures operators account for all variables before
applying deductions.
4. In a duty cycle load chart for a rough terrain crane, what does
"impact loading" adjustment account for?
• A. Static lifts only
• B. Sudden dynamic forces from dropping loads
• C. Continuous material handling operations
• D. Wind gusts over 20 mph
Rationale: Duty cycle charts include adjustments for repetitive,
dynamic lifts like magnet or clamshell operations, where impact from
acceleration/deceleration reduces allowable capacities to prevent
structural fatigue.
5. If a load chart specifies a 10% deduction for side loading, what is
the adjusted capacity for a 50,000 lb gross rating?
• A. 45,000 lb
• B. 45,000 lb
• C. 55,000 lb
, 3
• D. 40,000 lb
Rationale: Side loading (off-vertical pulls) induces additional stresses; a
10% deduction yields 50,000 × 0.90 = 45,000 lb. This conservative
adjustment aligns with OSHA 1926.1400 requirements for load control.
6. For a crawler crane with a luffing jib, how is the effective radius
calculated?
• A. Boom length plus jib length only
• B. Horizontal distance from centerline to load
• C. Pythagorean theorem using jib offset and height
• D. Fixed at 90 degrees
Rationale: Effective radius for luffing jibs uses trigonometric
calculations based on offset angle, boom tip height, and jib length to
determine the true load path distance, as detailed in manufacturer charts.
7. What is the maximum allowable load for a telescopic boom at 0%
reeving if the chart shows 80% for single line?
• A. 80% of gross
• B. 100% of gross
• C. 120% of gross
• D. 50% of gross
Rationale: At 0% reeving (single part line), the capacity is the full gross
rating before deductions. Reeving percentages (e.g., 80% for two parts)
indicate capacity reductions per line part for hoist limitations.
8. When interpreting a load chart for a crane with removable
counterweights, what must be verified?
• A. Only total weight
• B. Configuration matching the chart's specified setup
• C. Boom angle only
• D. Wind speed
NCCCO Core Practice Exam
(2025/2026 Update) Questions
and 100% Correct Verified
Answers | Grade A
Load Chart Interpretation (Questions 1-20)
1. When using a load chart for a lattice boom crawler crane, what
does the term "on-rubber" lifting capacity refer to?
• A. Lifting with outriggers extended on soft ground
• B. Lifting with rubber tires supporting the load
• C. Lifting without outriggers, using tires for stability
• D. Lifting on rubber mats to distribute weight
Rationale: "On-rubber" capacities are specifically for lifts where the
crane is not using outriggers and relies on its rubber tires for support,
typically at reduced capacities to account for stability limitations. This is
critical for understanding chart deductions in mobile crane operations
per ASME B30.5 standards.
2. For a telescopic boom truck crane, if the load radius increases
from 20 ft to 25 ft at 50 ft boom angle, what is the primary effect on
capacity?
• A. Capacity increases proportionally
• B. Capacity remains unchanged
• C. Capacity decreases due to increased moment arm
• D. Capacity doubles for safety margin
, 2
Rationale: Load capacity decreases as radius increases because the
load's moment arm lengthens, creating greater torque on the crane. Load
charts reflect this inverse relationship, emphasizing the need for precise
radius measurement during pre-lift planning.
3. What auxiliary equipment is typically required to read gross
capacity from a load chart?
• A. Jib offset angle
• B. Effective boom length and angle
• C. Counterweight configuration only
• D. Reeving multiplier
Rationale: Gross capacity is determined by intersecting the boom length
(or effective length with jib) and angle lines on the chart. This
foundational step ensures operators account for all variables before
applying deductions.
4. In a duty cycle load chart for a rough terrain crane, what does
"impact loading" adjustment account for?
• A. Static lifts only
• B. Sudden dynamic forces from dropping loads
• C. Continuous material handling operations
• D. Wind gusts over 20 mph
Rationale: Duty cycle charts include adjustments for repetitive,
dynamic lifts like magnet or clamshell operations, where impact from
acceleration/deceleration reduces allowable capacities to prevent
structural fatigue.
5. If a load chart specifies a 10% deduction for side loading, what is
the adjusted capacity for a 50,000 lb gross rating?
• A. 45,000 lb
• B. 45,000 lb
• C. 55,000 lb
, 3
• D. 40,000 lb
Rationale: Side loading (off-vertical pulls) induces additional stresses; a
10% deduction yields 50,000 × 0.90 = 45,000 lb. This conservative
adjustment aligns with OSHA 1926.1400 requirements for load control.
6. For a crawler crane with a luffing jib, how is the effective radius
calculated?
• A. Boom length plus jib length only
• B. Horizontal distance from centerline to load
• C. Pythagorean theorem using jib offset and height
• D. Fixed at 90 degrees
Rationale: Effective radius for luffing jibs uses trigonometric
calculations based on offset angle, boom tip height, and jib length to
determine the true load path distance, as detailed in manufacturer charts.
7. What is the maximum allowable load for a telescopic boom at 0%
reeving if the chart shows 80% for single line?
• A. 80% of gross
• B. 100% of gross
• C. 120% of gross
• D. 50% of gross
Rationale: At 0% reeving (single part line), the capacity is the full gross
rating before deductions. Reeving percentages (e.g., 80% for two parts)
indicate capacity reductions per line part for hoist limitations.
8. When interpreting a load chart for a crane with removable
counterweights, what must be verified?
• A. Only total weight
• B. Configuration matching the chart's specified setup
• C. Boom angle only
• D. Wind speed
