1. Placing Equipment Chapter 5

2. Chapter Topics Placing concrete directly from trick mixers Manual or motorized buggies Crane and bucket Concrete conveyors Concrete pumps

3. Placing Directly from Truck Mixers Most economical placing method Minimal 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 conveyors

8. 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 reinforcing

10. 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

12. Conveyors Mounted to ready mix truck Separate conveyors Can discharge concrete quickly

15. Concrete Pumps Trailer pumps – General 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 removal

17. Concrete Pumps Boom-mounted pumps – Most efficient method for large placements Consider these factors – Delivery output – Pump layout and boom length – Site conditions – Number of pumps needed