LADOTD Structural Concrete Inspection
2 Questions And Correct Answers
equipment, procedures, material supply
What should be discussed at a prepour conference?
the distance between bars, the distance from bar ends to side forms, and the
straightness of bars
What should be checked on reinforcing steel during a prepour inspection?
the anticipated deflection under the screen, the finished grade, and the rail elevation
What should be considered when establishing the proper elevation of a transverse
screed?
to ensure that the screed will yield proper grade at all points
What is the main purpose of the dry run of the transverse screed over the pour unit?
the District Laboratory Engineer
Who must approve the PCC Job Mix Release prior to beginning a pour?
,two years
How long is a concrete plant certification valid?
Cement Certificate of Delivery
What must accompany a shipment of cement that is to be used in concrete for DOTD
projects?
the working face of the stockpiles, and the flow between the batch bin and the weighing
hopper
Which areas must the contractor take aggregate samples from for job control and
verification testing?
revolution counters, drum capacity and rotation speeds, and the water metering system
What items should be checked daily on a transit mixer?
place the bucket on a plywood platform
What is an acceptable procedure for filling a concrete bucket?
cement grout
, What is used to lubricate tubes for a concrete pumping operation?
Mixing, placement, consolidation, finishing, straightening, tine finishing, and curing
What is the order of operations for pouring a bridge deck?
Contractor's Qualified Technician
Who is responsible for determining the actual number of mixing speed revolutions to
be performed at the plant?
it makes concrete more pourous & more workable?
What 2 reasons to use an air entrainment admixture?
80° F
At what ambient air temperature are hot weather practices required to begin?
it must be removed & replaced
What must be done to a concrete slab that froze between the initial and final set?
2 Questions And Correct Answers
equipment, procedures, material supply
What should be discussed at a prepour conference?
the distance between bars, the distance from bar ends to side forms, and the
straightness of bars
What should be checked on reinforcing steel during a prepour inspection?
the anticipated deflection under the screen, the finished grade, and the rail elevation
What should be considered when establishing the proper elevation of a transverse
screed?
to ensure that the screed will yield proper grade at all points
What is the main purpose of the dry run of the transverse screed over the pour unit?
the District Laboratory Engineer
Who must approve the PCC Job Mix Release prior to beginning a pour?
,two years
How long is a concrete plant certification valid?
Cement Certificate of Delivery
What must accompany a shipment of cement that is to be used in concrete for DOTD
projects?
the working face of the stockpiles, and the flow between the batch bin and the weighing
hopper
Which areas must the contractor take aggregate samples from for job control and
verification testing?
revolution counters, drum capacity and rotation speeds, and the water metering system
What items should be checked daily on a transit mixer?
place the bucket on a plywood platform
What is an acceptable procedure for filling a concrete bucket?
cement grout
, What is used to lubricate tubes for a concrete pumping operation?
Mixing, placement, consolidation, finishing, straightening, tine finishing, and curing
What is the order of operations for pouring a bridge deck?
Contractor's Qualified Technician
Who is responsible for determining the actual number of mixing speed revolutions to
be performed at the plant?
it makes concrete more pourous & more workable?
What 2 reasons to use an air entrainment admixture?
80° F
At what ambient air temperature are hot weather practices required to begin?
it must be removed & replaced
What must be done to a concrete slab that froze between the initial and final set?
