NCCER IRON WORKER 2025
FINAL
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The simplest plumbing tool, consisting of a line with a brass weight on it is
a______. - ANSWERS-plumb bob
QUESTION 2
The main difference between A325 and A490 bolts is______. - ANSWERS-the
amount of tensile strength they can withstand before failure.
QUESTION 3
The formula for calculating the length of the bolt needed is______. - ANSWERS-
Length of bolt = thickness of metal(grip) + bolt diameter +1/4" + thickness of
washer(if used)
QUESTION 4
The most tension a bolt can take without failing is called______strength. -
ANSWERS-tensile
END OF
PAGE 1
, NCCER IRON WORKER 2025
FINAL
QUESTION 5
To minimize the number of times a connection must be pinned, and ironworker
should place the pin in the most difficult connection to be held first. This is usually
the hole______. - ANSWERS-with the least amount of daylight showing through.
QUESTION 6
When using the turn-of-nut method to tension bolts, the amount of turn beyond the
snug position required varies from a______. - ANSWERS-1/3 turn to a 2/3 turn.
QUESTION 7
The two basic connection design types are shear connections and______
connections. - ANSWERS-moment
QUESTION 8
Bolts that us bolted angle cleat connections and share bolt holes between the webs
of columns and girders over more than one bay of a structure are called______. -
ANSWERS-double
END OF
PAGE 2
FINAL
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The simplest plumbing tool, consisting of a line with a brass weight on it is
a______. - ANSWERS-plumb bob
QUESTION 2
The main difference between A325 and A490 bolts is______. - ANSWERS-the
amount of tensile strength they can withstand before failure.
QUESTION 3
The formula for calculating the length of the bolt needed is______. - ANSWERS-
Length of bolt = thickness of metal(grip) + bolt diameter +1/4" + thickness of
washer(if used)
QUESTION 4
The most tension a bolt can take without failing is called______strength. -
ANSWERS-tensile
END OF
PAGE 1
, NCCER IRON WORKER 2025
FINAL
QUESTION 5
To minimize the number of times a connection must be pinned, and ironworker
should place the pin in the most difficult connection to be held first. This is usually
the hole______. - ANSWERS-with the least amount of daylight showing through.
QUESTION 6
When using the turn-of-nut method to tension bolts, the amount of turn beyond the
snug position required varies from a______. - ANSWERS-1/3 turn to a 2/3 turn.
QUESTION 7
The two basic connection design types are shear connections and______
connections. - ANSWERS-moment
QUESTION 8
Bolts that us bolted angle cleat connections and share bolt holes between the webs
of columns and girders over more than one bay of a structure are called______. -
ANSWERS-double
END OF
PAGE 2
