1.6. Balancing Interdependent Machines

So far, we discussed about how the job site conditions and the job site location, how it influences the selection of the machine. So, now we move on to the next important factor about balancing interdependent machines, how it is going to affect the selection of your machine. So, generally in many project sites we can see that many machines will be working together.

In construction projects, different types of machinery often work together to complete tasks. This teamwork among machines is called interdependence. It's crucial to ensure that the machines can efficiently collaborate, which means they should have compatible productivity levels and sizes. This prevents inefficiencies that can arise from mismatched machinery.

Think of this like a sports team. If you have a soccer team, each player has a specific role and skill. For example, a forward needs to be fast and agile to score goals, while a defender might be stronger for stopping the opponent. If one player is much faster than the others, it might not be beneficial because their teamwork can falter. Similarly, in construction, mismatched machinery can lead to wasted time and reduced overall performance.

So when the machines work together, they should have compatible productivity or compatible size. So that cycle time is not wasted much see in this picture, you can see an excavator and a truck working together. So, everyone knows about this excavator this is a backhoe, it is very good in excavating the earth below the ground level, but its mobility is very poor. So, it has to depend upon a hauling equipment like a truck to transport the earth.

When machines like excavators and trucks operate together, it's vital to ensure their sizes and productivity levels are balanced. For instance, if an excavator can dig a lot of earth quickly, but is used with a truck that can't carry enough dirt, the truck will constantly be idle, waiting for the excavator. This mismatch wastes time and resources, so a balance is essential for optimizing performance.

Imagine trying to fit large boxes of groceries into a small car. If the groceries are too big for the trunk, you’ll end up making multiple trips back and forth, wasting time and energy. However, if you use a larger vehicle, like a van, that can handle all the boxes in one trip, the process becomes much more efficient, just as balancing machine sizes makes construction more productive.

So general guideline is, you have to go for the truck, which has a capacity of 4 to 5 times the bucket capacity of the excavator. So, in that case, the entire process will be efficient, the productivity will be balanced. So, this guideline is devised based upon the past experience.

A useful guideline for selecting the right truck for an excavator is to choose a truck that can handle 4 to 5 times the amount of material that the excavator's bucket can hold. Following this guideline helps to ensure that the truck can efficiently transport the material without causing delays, allowing both machines to operate together effectively.

Consider a school field trip where one bus is large enough to transport all students at once while another is too small. The small bus might make multiple trips, leading to delays and frustration. But with a larger bus, all students arrive at the destination simultaneously. In construction, following size guidelines helps prevent delays and enhances teamwork between machines.

Similarly, you have to balance a number of machines also say for example, the how many excavators and how many trucks you may need for the particular operation, you need to balance depending upon the cycle time of the truck and the cycle time of the excavator.

Balancing the number of different machines, such as excavators and trucks, is also important. This involves analyzing their cycle times—the time it takes each machine to complete its task. By understanding these times, you can determine how many of each machine is needed to work together efficiently. This way, no machine sits idle waiting for another to finish.

Think of a restaurant kitchen where chefs must coordinate cooking meals with waitstaff serving customers. If the chefs cook faster than the waitstaff can serve, meals pile up and customers get frustrated. However, if the waitstaff is appropriately timed with the chefs' cooking speed, meals are served promptly, keeping customers happy. In construction, balancing machine numbers works similarly, ensuring smooth operations.

So this is also another example of how the interdependent machines are involved in the project side. So this is just a schematic picture showing a bulldozer which is pushing a scraper, the scraper is leading end and bulldozer is the rear end. So, you can see that generally this scrapers also earthmoving machine as known to everyone.

In this example, a bulldozer assists a scraper in earthmoving tasks. The scraper loads materials while the bulldozer pushes it along. This partnership enhances the efficiency of both machines. Just like before, it’s important to ensure that the bulldozer can adequately support the scraper’s size and productivity to avoid wasted time.

Think about a team of people moving furniture. If one person is tasked with carrying a large sofa while another is carrying a small chair, they may not move at the same speed. However, if a stronger person helps carry the sofa, both will move more efficiently as a team. In construction, having machines support one another like this can significantly boost productivity.

So, the next important factor is it the mobility required. So, it depends upon the project additional actual activity. So, what is your mobility required with respect to equipment during the particular activity?

The mobility of equipment is crucial in determining how effectively machines can operate at a construction site. The type of job being done and the site layout will influence what kind of mobility is needed. For example, constricted spaces may require machines like truck-mounted concrete pumps to maneuver adequately.

If you’ve ever seen a delivery van in a busy city, you may notice that it needs to navigate narrow streets and tight corners skillfully. In a construction site, some machines may need similar agility to function effectively. Choosing machines that meet specific mobility needs ensures operations run smoothly, even in challenging environments.

So nowadays people prefer to go for versatile machines. Versatile machines in the sense; equipment is called as a versatile machine when it can be used for several activities in the same project site.

Versatile machines adapt to different tasks at a construction site by allowing the operator to switch attachments for various jobs. This flexibility not only saves costs but maximizes the utility of the equipment throughout the project. Having equipment that can perform multiple functions is increasingly favored in modern construction.

Consider a Swiss army knife. It has multiple tools, allowing it to be used for cutting, screwing, and opening bottles, all in one device. In construction, a versatile machine serves a similar purpose, making it adaptable to many different tasks without the need for separate machines for each job.

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