Chapter Topics Placing concrete directly from trick mixers Manual or motorized buggies Crane and bucket Concrete conveyors Concrete pumps Placing Directly from Truck Mixers Most economical placing method ID: 680059
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Slide1
Placing Equipment
Chapter 5Slide2
Chapter Topics
Placing concrete directly from trick mixers
Manual or motorized buggies
Crane and bucket
Concrete conveyors
Concrete pumpsSlide3
Placing Directly from Truck Mixers
Most economical placing methodMinimal handling; minimizes segregation
With chute extensions up to 20 ft
Deliver 8 to 10 cy and weigh up to 80,000 lbs
Avoid cracking sidewalks and driveways
Avoid open excavations or walls
If wall 6 ft deep, stay 6 feet away
Take advantage of mixer-mounted conveyorsSlide4Slide5Slide6Slide7Slide8
Manual or Motorized Buggies
Transport from mixer to
deposit
Walk-behind or
riding
Some can fit through 36 inch
doorways
Placing capacity ranges from 15 to 20
cy/hr
Consider costs
Buggy may need temporary ramps
Can’t run over reinforcingSlide9Slide10
Crane and Bucket
Lift concrete bucket to desired
location
Typically for small placements:
columns
Two buckets increase
production
Buckets
Different sizes: 1/3 to 3 cy
Different attachments: rubber discharge chutes Slide11Slide12
Conveyors
Mounted to ready mix truckSeparate conveyors
Can discharge concrete quicklySlide13Slide14Slide15
Concrete Pumps
Trailer pumpsGeneral purpose: 20 to 35 cy/hr
Pump up to 250 ft vertically
Pump up to 1000 ft horizontally
4 to 5 inch diameter pipelines
Labor intensive for pipeline placing and removalSlide16Slide17
Concrete Pumps
Boom-mounted pumpsMost efficient method for large placements
Consider these factors
Delivery output
Pump layout and boom length
Site conditions
Number of pumps neededSlide18Slide19
End of Chapter 5