Advantages And Disadvantages Of Lean Construction

Lean manufacturing is the production of goods using less of everything than in mass production: less human effort, less manufacturing space, less investment tools and less engineering time to develop a new product. A company becomes lean by continuously increasing its capacity to produce high-quality goods while simultaneously decreasing

“Lean is a systematic approach to identifying and eliminating waste (non-value-added activities) through continuous improvement by flowing the **product at the pull of the customer in pursuit of perfection.” Lockwood [24].

Lean manufacturing is the production of goods using less of everything than in mass production: less human effort, less manufacturing space, less investment tools and less engineering time to develop a new product. A company becomes lean by continuously increasing its capacity to produce high-quality goods while

Other Lean techniques that the researcher obtained through analyzing collected data are “customer-supplier” standpoints and the Plan Do Study Act (PDSA) approach. Fundamentally projects utilized Lean principles will pay more attention on the demands of customers to supply exactly what they need and require; therefore, this technique significantly reduce needlessly waste of the project. Likewise, PDSA is mentioned in the continuous improvement of the project life cycle with the following definitions of each factor:

Lean production is an incorporated group of activities set up to attain high volume production by using low inventories of raw materials, processing goods, and finished goods (Chase, Jacobs, & Aquilano, 2006). Using a lean production process, the China plant will be able to produce goods at a lower cost. Riordan China plant will need to eliminate any waste in the production process to achieve the highest level of efficiency.

“Lean means creating more value for customers with less” (Krejewski, L., Ritzman, L.P., & Malhotra, M.K., 2013). Implementing this into a project can make the project very successful at a lower rate of cost and time. There are five steps in allowing the lean process to work successfully. This process is easy to remember but not always easy to achieve. Specifying the value from the customer’s point of view of the product that the customer is interested in purchasing is the first step. Identifying all the steps of value for the product the customer wants to purchase and eliminating the steps that are unnecessary is the second step. Creating a sequence of steps that flow in a consistent fashion and will flow smoothly toward the customer is the third step. Introducing the flow of the product that the customer is interested in purchasing and allowing the customer to pull value from the product is the fourth step. The fifth and final step in the lean technique process is “as value is specified, value streams are identified, wasted steps are removed, and flow and pull are introduced, begin the process again and continue it until a state of perfection is reached in which perfect value is created with no waste” (Lean Enterprises Institute, 2015).

Lean Thinking is an integrated system of standards, procedures, tools, and techniques that focus on harmonizing work flows, managing differences in production flows, and lessening waste. The process provides several standard solutions to common organizational problems like complexity reduction and visual management. The

In general, IPD, Lean, or BIM is a particularly new controversial phenomenon in the construction industry that generates many debates and discussions around each component’s advantages and disadvantages, effectiveness, and potential risks (Guerra, 2010). As BIM’s complementary connection to IPD, there are numerous questions regarding requirements of using BIM in IPD-based projects. Like BIM-IPD considerations, is Lean construction really necessary for every IPD-related project or only enforced by the project team favor? Interestingly, many construction professionals question that whether or not IPD can implement without the use of BIM as well as Lean principles. One step at a time, these inquiries are still exploring by experts and analysts whereas attempting efforts of combining those three elements in construction projects are currently promoted as dominant worldwide tendencies. Thus, interdependent corporations of ILB need to be carefully evaluated in order to flawlessly synergy them in real world cases. Specific partnerships for each combination of two factors will be subsequently revealed and examined in next section. Figure 2.1 points out the MacLeamy Curve for construction phases and costs through perspectives of Construction Users Roundtable (CURT, 2004). As mentioned above, IPD, Lean construction, and BIM not only remarkable share numerous mutual characteristics and common goals in quality, cost, and time, they

The current state consists of fragmented processes, which is the source of all productivity issues and inefficiency in the construction industry. The future state should be “project focused” rather than “process focused”. To achieve this desired future state it is essential that these processes are transformed to a more integrated approach. There should be better collaboration between the different stakeholders in the industry such as architects, builders, owners and regulatory agencies that issues permits. In the current, traditional system of project delivery, the relationship between these involved parties are adversarial. This can lead to the project being marred with schedule delays, budget overruns, poor quality, and disputes and litigations between the parties involved, as they play the “blame game” refusing to take liability or responsibility for the different processes. The desired future state can be reached through incorporating the more collaborative delivery methods that are gaining popularity, like Design Build and Integrated Project Delivery. These systems are based on information and risk sharing. IPD especially has a potential to incorporate Lean Construction practices and Target Value Design in the process. The alliance of the owner, builder, design professional and other specialty consultants for the project, can communicate effectively with each other on a common platform of knowledge sharing. Problems that may arise during construction or design

Lean is defines the manufacturing philosophy that reduces the time between the shipping and customer demand, which based on the systematic method by eliminating waste, that means giving the customer what they want when they want it, and don 't waste whatever. Rahmana, Sharif and Esa (2013) suggested lean production is mentioned to improve the company 's performance from the philosophy in reducing waste in order. That means, lean system destination is the decrease cost by removing the non-value activities, which they are applying a category of tools and techniques for checking and eliminating defective in the production process. In the Evenort Company should emulate the five overriding principles of lean thinking in terms of implementing lean that there is guarantee the company has been driving correctly in the lean manufacturing (Cardiff 2015) as can show in table 1.

The lean approach refers to a management philosophy in which the company is constantly pushing towards the ideal system. This is done by attempting to reduce or eliminate to the deviations from the system and adapt to any remaining deviations in place. In short, implementing lean production aims to reach the optimal level of efficiency.

Keeping all this in mind, builders have to work alongside clients to satisfy their project needs. Projects are also being built quicker because of the demand to occupy them instantly.

Lean manufacturing is an operational procedure arranged toward accomplishing the most limited conceivable process duration by wiping out waste. It is gotten from the Toyota production system and its goal is to expand the worth included work by taking out squanders and decreasing superfluous work. The method frequently diminishes the time between a client request and shipment, and it is intended to enhance benefit, consumer loyalty, throughput time, and worker inspiration. The advantages of lean manufacturing for the most part are lower costs, higher quality, and shorter lead times. The term lean manufacturing is made to speak to less human exertion in the organization, less assembling space, less interest in apparatuses, less stock in advancement, and less designing

All construction sites over the world will need to decide the master scheduling for consider lean or not lean. Milestones are set and strategy chosen (Koskenvesa and Koskela 104) with the help some key trades. The purpose of this is to:

Lean is a process where creating more value to customers by minimizing wastage, time with less resources. Lean organization understand the customer value and try to increase proceed which adding more value to the business. In order to accomplish the lean thinking