Which type of concrete pump uses an articulating boom mounted on a truck to deliver concrete directly to the placement point?
Nccco Concrete Pump Equipment
Question · Easy
On a typical double-piston concrete pump, what is the primary purpose of the S-valve (rock valve)?
Question · Medium
A line pump that is towed to the jobsite and uses only flexible hose for placement is best described as a:
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A separate placing boom is best described as:
What component sits between the truck mixer and the pumping cylinders and is agitated to keep concrete homogeneous before it enters the pump?
The differential cylinders on a piston concrete pump are powered by:
The rigid steel pipe that runs along a boom from the hopper to the end hose is commonly called the:
Which manufacturer is most associated with German-engineered truck-mounted boom pumps using S-valve systems?
A reducer in a concrete pump delivery line is used to:
The flexible rubber hose attached to the discharge end of the boom is generally called the:
Which feature is unique to a boom pump versus a trailer-mounted line pump?
Pump output capacity is most commonly rated in:
Which best describes the stroke cycle of a double-piston concrete pump?
Wear parts most commonly replaced on a piston concrete pump include:
On a truck-mounted boom pump, the placing boom is supported and articulated by:
Which statement best contrasts a concrete pump with a concrete mixer truck?
Before deploying outriggers on a boom pump, the operator's first responsibility is to:
Nccco Concrete Pump Setup
Outrigger pads (cribbing) are placed under outrigger feet primarily to:
Outrigger reaction forces are typically:
Question · Hard
When setting up near an excavation, the outrigger setup must be located:
The boom pump is rated for level setup, but the available pad has 5 degrees of cross-slope. The operator should:
Under OSHA 29 CFR 1926.1408 Table A for equipment up to 50 kV, the minimum approach distance (MAD) for any part of the equipment, load line, or load is:
When the voltage of an overhead power line is unknown and over 50 kV cannot be ruled out, the operator should:
Before unfolding the boom, the operator should confirm:
Which underground hazard most often causes outrigger collapse on residential pumping jobs?
An operator is asked to short-jack one side because of a fence. The correct response is to:
A sloped setup pad of 3 percent is generally:
An operator notices a high-voltage transmission line approximately 12 feet from the planned boom path. The voltage is unknown. The correct decision is to:
Setting up a pump on a public street typically requires:
When backing into a setup area with overhead obstructions, the operator should:
When the truck mixer cannot reach the pump directly, what staging consideration most affects pump operations?
On a soft fill site, the operator should:
Before booming the placing boom over a building under construction, the operator should:
Nccco Concrete Pump Operation
The placement crew is requesting more concrete flow. Before increasing pump output, the operator should:
The end hose should generally be:
Personnel should not stand directly:
The first concrete pumped after priming the line is normally:
Priming a delivery line typically uses:
If line pressure spikes above the pump's rated operating pressure, the operator should:
Pumping pressure tends to be higher when:
When pumping uphill on a long horizontal run with a vertical riser at the end, what does the operator usually do at start-up?
While placing through a slab pour, the placement crew asks the operator to swing the boom faster. The operator should:
The most common consequence of pumping concrete with too low a slump or poor pumpability is:
The proper response to a partial line plug detected by rising pressure is to:
When pumping into a deep column form, the end hose should be:
If the boom's hydraulic level indicator suddenly shows the unit out of level mid-pour, the operator should:
Concrete temperature in the line that is too high typically:
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