As you now, incase of major construction projects,speed of work and time consumed for the completion of work is very important. Mechanization is required in the construction work where construction equipment plays a major role. With the change in technology improvement in construction equipment should be done to make work easier and speedier. In ancient times due to shortage of equipment the construction work was difficult as well as dangerous. Shortage of equipment results into delay in the construction projects. Do you know what is the major factor for any project? Yes, the cost of construction is a major factor for all projects. The factors that influence cost of construction mainly are materials, labors, construction equipment. Nowadays we all want to know the importance of the thing for what the investment is done. So, now let?s understand the importance of construction equipment. Importance of Construction Equipment The output of the work can be maintained, even if there is a shortage of skilled and semi-skilled workers. The construction equipment reduces the labor work as well as protect workers from performing difficult work. Precession of implementation is done by using construction equipment with software control. The construction equipment with high capabilities is available and large output are possible with the help of mechanization. So, understanding equipment in detail let?s further move to its classification. Classification of equipment The construction equipments can be classified into two types. The classification of the equipments is done on the basis of their availability, commercial sizes and specifications. 1) Standard equipment 2) Special equipment Standard equipment The Standard equipment?s are easily available to the purchaser. The standard equipment can be for variety of construction works. The investment of this equipment is less compared to special equipment.If incase the parts of standard equipment get damaged, they can be easily available. Special equipment The Special equipment?s are manufactured for the special projects. The selection of special equipment should be done after proper financial analysis. The investment for special equipment is very high and involves risk. It cannot be used economically for other projects. We all have seen the cartoon ?bob the builder? and so we know how the construction equipment look like. But now, let?s understand the working and use of the equipments. Excavator Excavator use something called hydraulics which makes them strong and superior at digging holes. Now, let?s understand in detail about the different parts used in excavator to understand it working. We have the large part called chassis which holds the bottom parts together. On one end of chassis, we will find Final drive wheels which are used to move the track. And at the other end we will find idler wheels. These wheels help the track roll around the front of the chassis. Tracks give the excavator lots of grip so that it can drive over bumpy ground and mud. On the top of the chassis the swing drive helps to spin around quickly. The house in the excavator holds the engine and connects all the upper parts together. Counterweight is placed on the back of the house which keeps the excavator balanced when it?s digging with its big arm at the front. In the middle of house and counterweight there is an engine that provides the power to the excavator. The operator of excavator uses joysticks to control the large arm of excavator and protects himself at dangerous sites with the help of cabs. Hydraulic boom cylinders help in moving boom up and down and the pointy teeth at the end help the bucket cut into the hard ground. Crane Cranes are one of the most versatile, powerful and important pieces of equipment. They can be used to accomplish a lot of heavy lifting tasks, saving the amount of time and energy spent on a project. Workers whose jobs involve working with and around cranes need to understand the hazards of moving parts and rigging of loads. There are few different types of cranes used in construction works. 1) Vehicle mounted crane 2) Tower crane 3) Rough terrain crane 4) Crawler crane 5) All terrain cranes 6) Railroad crane 7) Telescopic handler crane 8) Harbor cranes 9) Floating crane 10)Aerial crane Compactors and road rollers Compaction is a process by which soil particles are artificially rearranged and packed together by applying mechanical energy to increase density and decrease void ratio. For this process compactors and road rollers are used. Types of rollers: 1) Smooth wheel rollers: These are one of the most common types of compaction equipment. This type of roller consists of a large steel drum in front and one or two wheels or drum on the rear end. 2) Ship foot rollers: In this type, on the outer surface of a metal cylinder, metal pieces of the shape of sheep foot are fixed. It is ideally suitable for compacting cohesive soil. 3) Pneumatic rollers: Pneumatic tyred rollers use compressed air to develop the required inflation pressure. Most suitable for compacting fine-grained soil and well graded soils. This is also called rubber tyred roller. 4) Grid rollers: As the name suggests, these rollers have a cylindrical heavy steel surface consisting of a network of steel bars forming a grid with squire holes. The weight of this roller can be increased by ballasting with concrete blocks.