Heavy equipment refers to heavy-duty vehicles, specially designed for executing construction tasks, most frequently, ones involving earthwork operations. They are also known as, construction equipment, construction plant, earth movers, engineering vehicles, or just plain equipment. They usually comprise five equipment systems: implement, traction, structure, power train, control and information. Heavy equipment functions through the mechanical advantage of a simple machine, the ratio between input force applied and force exerted is multiplied. Currently most equipment use hydraulics as a primary source of transferring power. The use of heavy equipment has a long history; the ancient Roman engineer Vitruvius (1st century BCE) gave detailed descriptions of heavy equipment and cranes in ancient Rome in his treatise De architectura.

Caterpillar D10 bulldozer at work

A mobile crane with the necessary equipment to travel at speed on public roads, and on rough terrain at the job site using all-wheel and crab steering. AT‘s combine the roadability of Truck-mounted Cranes and the manoeuvrability of Rough Terrain Cranes.

All terrain crane

Rough terrain crane

Crawler crane

 

Tower crane

Tower crane cabin

Four self-erecting tower crane mounted on the roof of 1st observatory (height 375 m) of Tokyo Sky Tree (Tower tip and two crane operator as of 497 m)

A tower crane rotates on its axis before lowering the lifting hook.

Self-erecting crane

In the fields of architecture and civil engineering, construction is a process that consists of the building or assembling of infrastructure. Far from being a single activity, large scale construction is a feat of human multitasking. Normally, the job is managed by a project manager, and supervised by a construction manager, design engineer, construction engineer, or project architect.

For the successful execution of a project, effective planning is essential. Those involved with the design and execution of the infrastructure in question must consider the environmental impact of the job, the successful scheduling, budgeting, construction site safety, availability of building materials, logistics, inconvenience to the public caused by construction delays, and bidding, etc.

Construction of a prefabricated home

A building site for a row of riverside apartment blocks in Cambridge

A large unfinished building

ump International Hotel and Tower (Chicago)

May 23, 2006

September 14, 2007 (3 months before completion)

 

Apartment complex under construction in Daegu, South Korea

Construction on a building in Kansas City, Missouri

Ironworkers erecting the steel frame of a new building at Massachusetts General Hospital, Boston

 

From Wikipedia, the free encyclopedia : Wholesale of machinery for construction