IRONWORKER NCCER EXAM 2025
QUESTIONS AND CORRECT ANSWERS
Which of the following conditions will cause carburizing or reducing flame?
- ANSWER-excess acetylene
If an operator using an OFC process produced an irregular cut surface with
pitting and undercutting, the most likely cause is -
ANSWER-a dirty cutting tip
which of the following is basic definition of concrete? -
ANSWER-artificially made rock
what is the term for the weight of all moving and constantly acting
loads? - ANSWER-live load
which of the following is not one of the three basic components of
concrete? - ANSWER-lime
,2|Page
which of the following is the most accurate range of strengths for
concrete? - ANSWER-3000 to 20,000 psi
when reinforcing concrete, what does the steel add to the concrete? -
ANSWER-tensile strength
what size wire is used to tie most rebar? - ANSWER-16
which of the following is a low foundation wall of sufficient depth to
extend below the frost line? - ANSWER-grade beam
concrete is strong in compression and
, but weak in
. - ANSWER-shear, tension
what are the small "U" or "W" shaped bars placed across a beam to resist
diagonal tension known as? - ANSWER-stirrups
Bar supports are also referred to as - ANSWER-accessories
the function of the is to safely transmit the
superstructure loads to the ground without causing settlement. -
ANSWER- foundation
, 3|Page
in order to connect the column to its supports, are
required. - ANSWER-dowels
in erecting a wall where the footings have been previously doweled, it is
necessary for all dowels to
be and
.-
ANSWER-straight, in-line
columns are made up of vertical bars and - ANSWER-bands or ties
what are the end supports for a beam bridge called? - ANSWER- abutments
SMAW uses which of the following electrode polarities? -
ANSWER-all of the above
All arc-welding processes require a continuous supply of electrical
current. What type of current can be used for SMAW?
- ANSWER-AC or DC
QUESTIONS AND CORRECT ANSWERS
Which of the following conditions will cause carburizing or reducing flame?
- ANSWER-excess acetylene
If an operator using an OFC process produced an irregular cut surface with
pitting and undercutting, the most likely cause is -
ANSWER-a dirty cutting tip
which of the following is basic definition of concrete? -
ANSWER-artificially made rock
what is the term for the weight of all moving and constantly acting
loads? - ANSWER-live load
which of the following is not one of the three basic components of
concrete? - ANSWER-lime
,2|Page
which of the following is the most accurate range of strengths for
concrete? - ANSWER-3000 to 20,000 psi
when reinforcing concrete, what does the steel add to the concrete? -
ANSWER-tensile strength
what size wire is used to tie most rebar? - ANSWER-16
which of the following is a low foundation wall of sufficient depth to
extend below the frost line? - ANSWER-grade beam
concrete is strong in compression and
, but weak in
. - ANSWER-shear, tension
what are the small "U" or "W" shaped bars placed across a beam to resist
diagonal tension known as? - ANSWER-stirrups
Bar supports are also referred to as - ANSWER-accessories
the function of the is to safely transmit the
superstructure loads to the ground without causing settlement. -
ANSWER- foundation
, 3|Page
in order to connect the column to its supports, are
required. - ANSWER-dowels
in erecting a wall where the footings have been previously doweled, it is
necessary for all dowels to
be and
.-
ANSWER-straight, in-line
columns are made up of vertical bars and - ANSWER-bands or ties
what are the end supports for a beam bridge called? - ANSWER- abutments
SMAW uses which of the following electrode polarities? -
ANSWER-all of the above
All arc-welding processes require a continuous supply of electrical
current. What type of current can be used for SMAW?
- ANSWER-AC or DC
