Construction Management, Accounts & Enterpreneurship Devlopment (General Engineering) (SSC JE)

Dummy activity–It is an artificial activity represented by dashed arrows which neither consumes any time nor resources.
Activity G is dummy activity.

Excavator is a oldest type of machine which remove earth.
• It is also used for heavy lifting digging of trenches, holes, foundation etc.
• It is generally used for excavation work.
Bulldozer–The bull dozer is a very powerful crawler that is equipment with a blade. Bulldozer large and extremely powerful tracked vehicles.
• The blade on a bull dozer is the heavy piece of metal plate that is installed on the front.

Bulldozer are heavy equipment capable of moving heavy loads rubble and are very helpful in civil engineering work.

Bulldozer is normally inferred to indicate heavy equipment like a loader or an excavator but specifically it signifies a tractor fitted with a blade.

Bulldozer are huge and robust tracked equipment, the tracks provide exceptional ground grip and mobility in patchy terrain.
• Bulldozer are used for shallow digging short range transportation of material, spreading soil dumped from trucks rough grading removing trees stumps and boulders.

Excavator–Excavator is a oldest type of machine which remove earth.
• It is also used for heavy lifting digging of trenches, holes, foundation etc.
• It is generally used for excavation work.