Road Construction Equipment Characteristics

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Presentation Description

Comparing bulldozers, front end loader, hydraulic excavator, dump trucks and scrapers,

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By: niazig2003 (72 month(s) ago)

good effort...

Presentation Transcript

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Road Construction Equipment Characteristics

PowerPoint Presentation:

1. Bulldozer 2. Front end Loader 3. Hydraulic excavator 4. Dump trucks or scrapers

Bulldozer:

Bulldozer Excavation mode: Digs and pushes; adequate control (depends on blade type)

Front end Loader:

Front end Loader Excavation mode: Minor digging of soft material; lifts & carries; good control

Hydraulic excavator:

Hydraulic excavator Excavation mode: Digs, swings, & deposits; excellent control; can avoid mixing materials long-distance material movement; excellent control

Dump trucks or scrapers:

Dump trucks or scrapers Excavation mode: Scrapers can load themselves; 'top down' subgrade excavation; used for small quantities

Operating distance for materials movement:

Operating distance for materials movement Bulldozer 91 m; pushing downhill preferred Front end Loader 91 m on good traction surfaces Hydraulic excavator 23 m (limited to swing distance) Dump trucks or scrapers No limit except by economics; trucks must be loaded

Suitability for fill construction:

Suitability for fill construction Bulldozer Adequate Front end Loader Good Hydraulic excavator Limited to smaller fills Dump trucks or scrapers Good for larger fills

Clearing and grubbing (capacity to handle logs):

Clearing and grubbing (capacity to handle logs) Bulldozer Good Front end Loader Adequate Hydraulic excavator Excellent Dump trucks or scrapers Not suitable

Ability to install drainage features:

Ability to install drainage features Bulldozer Adequate Front end Loader Digging limited to soft materials Hydraulic excavator Excellent Dump trucks or scrapers Not suitable

Operating cost per hour:

Operating cost per hour Bulldozer Moderate, depending on machine size Front end Loader Relatively low Hydraulic excavator Moderate to high, but productivity excellent Dump trucks or scrapers Very high

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Special limitations or advantages

Bulldozer:

Bulldozer Special limitations or advantages: Widely available; can match size to job; can do all required with good operator

Front end Loader:

Front end Loader Special limitations or advantages: Cannot dig hard material; may be traction limited

Hydraulic excavator:

Hydraulic excavator Special limitations or advantages: Good for roads on steep hillsides; can do all required except spread rock for rock surfacing

Dump trucks or scrapers:

Dump trucks or scrapers Special limitations or advantages: Limited to moving material long distances; can haul rock, rip rap, etc.

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Machines4u 2014, February PO Box 5324, Market St, South Melbourne, VIC 3205, Australia Visit website: Machines4u.com.au

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