Tower Crane Operations and Safety
Sample Questions – NCCCO TCRM / OSHA
/ ASME Reference – Exam Practice
Questions with Answers
Introduction:
This document contains an extensive collection of sample
questions and correct answers related to tower crane
operation, inspection, safety, and regulations. It covers NCCCO
Tower Crane Reference Manual (TCRM) material, OSHA
construction standards, and ASME B30 and B30.23
requirements, making it ideal for exam preparation and
knowledge review.
The questions span counterweight configurations, rigging,
wire rope inspections, personnel lifting, power line safety, bolt
connections, and operational limits commonly tested on tower
crane certification exams.
Exam Questions and Answers:
What is the minimum drum flanges should extend above the
top layer of rope? ---Correct Answer---1/2" (ASME 3-1.10.2 (b)
,What is the counterweight requirements in counterweight
arrangement "A" with a 60m jib and a 24m counter jib? ---
Correct Answer---1-CBD & 3-CBC (TCRM pg. 17)
What is the counterweight requirements in counterweight
arrangement "B" with a 72.3m jib length? ---Correct Answer---
1xD+5xC=1xA (TCRM pg. 18)
What is the front counterweight toward the tower in the
counterweight arrangement "B" in a 52.3 jib length? ---Correct
Answer---Block A (TCRM pg. 18)
How many counterweight blocks are to be places onto the gear
platform before installing the boom in counterweight
arrangement "C"? ---Correct Answer---6 (TCRM pg. 19)
Using counterweight arrangement "D", how many
counterweight blocks are required with a 70m jib? ---Correct
Answer---4xCBC - 1xCBD
According to central ballast sheet "B", how much does ballast
Block A weigh? ---Correct Answer---5.4 T (TCRM pg. 22)
, According to central ballast sheet C, at what tower section
does the climbing equipment need to be lowered after
erection? ---Correct Answer---12 (TCRM pg 23)
According to tie-in spacing A, top climbing tower sections
required with two or more tie-ins with boom length of 164'.
What tower section is the first tie-in made? ---Correct Answer-
--8 max - 4 min (TCRM pg. 26)
Using tie-in spacing B, what is the distance of face of structure
to the center line of the crane? ---Correct Answer---3.3 m
minimum (TCRM pg. 27)
According to crane "B" with a 230' jib assembly, what is the
shortest section used? ---Correct Answer---16' 4-3/4"
According to crane "A", with a 60 m jib, what is the length of
the counter jib section closest to the tower? ---Correct
Answer---8.225 m (TCRM pg 15)
Using chart F-2, what is the capacity with a 180 ft. boom with
a radius of 150'? ---Correct Answer---19,840 lbs (TCRM pg.14)
Sample Questions – NCCCO TCRM / OSHA
/ ASME Reference – Exam Practice
Questions with Answers
Introduction:
This document contains an extensive collection of sample
questions and correct answers related to tower crane
operation, inspection, safety, and regulations. It covers NCCCO
Tower Crane Reference Manual (TCRM) material, OSHA
construction standards, and ASME B30 and B30.23
requirements, making it ideal for exam preparation and
knowledge review.
The questions span counterweight configurations, rigging,
wire rope inspections, personnel lifting, power line safety, bolt
connections, and operational limits commonly tested on tower
crane certification exams.
Exam Questions and Answers:
What is the minimum drum flanges should extend above the
top layer of rope? ---Correct Answer---1/2" (ASME 3-1.10.2 (b)
,What is the counterweight requirements in counterweight
arrangement "A" with a 60m jib and a 24m counter jib? ---
Correct Answer---1-CBD & 3-CBC (TCRM pg. 17)
What is the counterweight requirements in counterweight
arrangement "B" with a 72.3m jib length? ---Correct Answer---
1xD+5xC=1xA (TCRM pg. 18)
What is the front counterweight toward the tower in the
counterweight arrangement "B" in a 52.3 jib length? ---Correct
Answer---Block A (TCRM pg. 18)
How many counterweight blocks are to be places onto the gear
platform before installing the boom in counterweight
arrangement "C"? ---Correct Answer---6 (TCRM pg. 19)
Using counterweight arrangement "D", how many
counterweight blocks are required with a 70m jib? ---Correct
Answer---4xCBC - 1xCBD
According to central ballast sheet "B", how much does ballast
Block A weigh? ---Correct Answer---5.4 T (TCRM pg. 22)
, According to central ballast sheet C, at what tower section
does the climbing equipment need to be lowered after
erection? ---Correct Answer---12 (TCRM pg 23)
According to tie-in spacing A, top climbing tower sections
required with two or more tie-ins with boom length of 164'.
What tower section is the first tie-in made? ---Correct Answer-
--8 max - 4 min (TCRM pg. 26)
Using tie-in spacing B, what is the distance of face of structure
to the center line of the crane? ---Correct Answer---3.3 m
minimum (TCRM pg. 27)
According to crane "B" with a 230' jib assembly, what is the
shortest section used? ---Correct Answer---16' 4-3/4"
According to crane "A", with a 60 m jib, what is the length of
the counter jib section closest to the tower? ---Correct
Answer---8.225 m (TCRM pg 15)
Using chart F-2, what is the capacity with a 180 ft. boom with
a radius of 150'? ---Correct Answer---19,840 lbs (TCRM pg.14)
