Tower Crane Exam set 1 questions well
answered to pass
B. 10 feet - correct answer ✔✔When a tower crane is erect on the job site, how much clearance
must be maintained from the nearest obstacle?
A. 5 feet
B . 10 feet
C. 15 feet
D. 20 feet
C. Flaking paint in cracks in welded joints - correct answer ✔✔What is the most important thing
to check when visually inspecting for structural integrity of the tower and jib?
A. signs of rust
B. Moister and dirt deposits
C. Flaking paint in cracks in welded joints
D. Broken electrical wires
D. Yearly OR prior to erection on a new job site - correct answer ✔✔When must tower crane
structural components under go non-destructive testing?
A. Yearly OR immediately after an accident
B. Yearly OR prior to adding additional tower sections
C. Yearly OR prior to dismantling the crane
D. Yearly OR prior to erection on a new job site
A. Daily - correct answer ✔✔A safe policy is to inspect obvious wear points at what frequency?
A. Daily
,B. Weekly
C. Bi-weekly
D. Monthly
B. Functional test without load - correct answer ✔✔For newly erected cranes, what is the FIRST
test that should be performed?
A. Test of supports
B. Functional test without load
C. Limit device check
D. Rotation of crane through 90 degrees
C. A ground rod attached to the crane's structure - correct answer ✔✔Per CAL-OSHA Tile 8
regulations, all electronically operated tower cranes must have ________ ?
A. an electrician on-site
B. two (2) times the required voltage to avoid power surges
C. A ground rod attached to the crane's structure
D. electrical safety gloves for personnel working on the crane.
D. 1:500 about 1 inch in 10 feet cranes should be plumbed vertically to what tolerance? -
correct answer ✔✔Cranes should be plumbed Vertically to What tolerance?
A.1:200 (about 1 inch in 10 feet)
B. 1:300 ( about 1 inch in 20 feet)
C. 1:400 ( about 1 inch in 30 feet).
D. 1:500 ( about 1 inch in 40 feet. )
B. Once - correct answer ✔✔Bolts supporting the tower, slewing ring, and jib may be re-
tightened how many times before being replaced?
, A. None, i.e., NO re-tightening allowed
B. Once
C. Twice
D. Three times
A. Over the bolts being tightened - correct answer ✔✔When the tower base bolts are re-
torqued, the jib is rotated so that the counterweight is placed in what position?
A. Over the bolts being tightened
B. Over the opposite side being tightened
C. 90 degrees to the bolts being tightened
C. 75 percent - correct answer ✔✔The jib slewing ring bolts should be re-tourqued with a load
of what percent (%) on the jib tip?
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent
A. 12 randomly distributed broken wires in the (1) lay OR four (4) broken wires in one (1) strand
in one (1) lay. - correct answer ✔✔Per ASME B30.3, when shall running ropes be replaced?
A. 12 randomly distributed broken wires in the (1) lay OR four (4) broken wires in one (1) strand
in one (1) lay.
B. Ten (10) randomly distributed broken wires in one (1) lay OR six (6) broken wires in one (1)
strand in one (1) lay
C. Three (3) randomly distributed broken wires in one (1) strand in (1) lay OR two (2) broken
wires in one (1) strand in one (1) lay.
answered to pass
B. 10 feet - correct answer ✔✔When a tower crane is erect on the job site, how much clearance
must be maintained from the nearest obstacle?
A. 5 feet
B . 10 feet
C. 15 feet
D. 20 feet
C. Flaking paint in cracks in welded joints - correct answer ✔✔What is the most important thing
to check when visually inspecting for structural integrity of the tower and jib?
A. signs of rust
B. Moister and dirt deposits
C. Flaking paint in cracks in welded joints
D. Broken electrical wires
D. Yearly OR prior to erection on a new job site - correct answer ✔✔When must tower crane
structural components under go non-destructive testing?
A. Yearly OR immediately after an accident
B. Yearly OR prior to adding additional tower sections
C. Yearly OR prior to dismantling the crane
D. Yearly OR prior to erection on a new job site
A. Daily - correct answer ✔✔A safe policy is to inspect obvious wear points at what frequency?
A. Daily
,B. Weekly
C. Bi-weekly
D. Monthly
B. Functional test without load - correct answer ✔✔For newly erected cranes, what is the FIRST
test that should be performed?
A. Test of supports
B. Functional test without load
C. Limit device check
D. Rotation of crane through 90 degrees
C. A ground rod attached to the crane's structure - correct answer ✔✔Per CAL-OSHA Tile 8
regulations, all electronically operated tower cranes must have ________ ?
A. an electrician on-site
B. two (2) times the required voltage to avoid power surges
C. A ground rod attached to the crane's structure
D. electrical safety gloves for personnel working on the crane.
D. 1:500 about 1 inch in 10 feet cranes should be plumbed vertically to what tolerance? -
correct answer ✔✔Cranes should be plumbed Vertically to What tolerance?
A.1:200 (about 1 inch in 10 feet)
B. 1:300 ( about 1 inch in 20 feet)
C. 1:400 ( about 1 inch in 30 feet).
D. 1:500 ( about 1 inch in 40 feet. )
B. Once - correct answer ✔✔Bolts supporting the tower, slewing ring, and jib may be re-
tightened how many times before being replaced?
, A. None, i.e., NO re-tightening allowed
B. Once
C. Twice
D. Three times
A. Over the bolts being tightened - correct answer ✔✔When the tower base bolts are re-
torqued, the jib is rotated so that the counterweight is placed in what position?
A. Over the bolts being tightened
B. Over the opposite side being tightened
C. 90 degrees to the bolts being tightened
C. 75 percent - correct answer ✔✔The jib slewing ring bolts should be re-tourqued with a load
of what percent (%) on the jib tip?
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent
A. 12 randomly distributed broken wires in the (1) lay OR four (4) broken wires in one (1) strand
in one (1) lay. - correct answer ✔✔Per ASME B30.3, when shall running ropes be replaced?
A. 12 randomly distributed broken wires in the (1) lay OR four (4) broken wires in one (1) strand
in one (1) lay.
B. Ten (10) randomly distributed broken wires in one (1) lay OR six (6) broken wires in one (1)
strand in one (1) lay
C. Three (3) randomly distributed broken wires in one (1) strand in (1) lay OR two (2) broken
wires in one (1) strand in one (1) lay.
