BIM can increase productivity…..

BIM Can increase productivity…. Before going to subject we can go throgh :

·       What is productivity?

·       Factors influencing productivity

·       How we can increase productivity through BIM?

What is productivity?

Production is work that contributes toward achieving a goal. Installing a light switch is work, but is productive work only if it is done at the right place, at the right time, and in the right manner. Productivity rate is the ratio of unit input per unit output and is often given as a percentage. It is possible to be productive, but have low productivity rates. An example of this would be when additional labor is added to a project but proportional increase in output is not gained due to crowded conditions or improper planning. As per Figure 1 the productivity rate increases as the size of the crew increases up to a 7 person crew. After that the rate falls because there is not enough room for each member to move efficiently so that output per person decreases. However, the amount of output for the crew continues to increase past the crew size of seven. Thus, despite the though total time decreases, the total cost to complete the task increases when more than 7 crew members are added.

The higher the productivity, the faster you are getting something done the higher the productivity rate, the greater efficiency and therefore, total cost to complete the task is lower. The productivity rate is important because it is indicative of the amount of money that you are going to spend to produce the final product. This dissertation is concerned with construction site productivity rates.

Factors influencing productivity

Productivity of various trades in construction is the basis of arriving at estimates for time and cost required to complete a construction process. Productivity figures however vary from country to country, region to region, company to company and from project to project.

One of the single biggest reason that affects the productivity rates is lack of planning and control over the construction process. Construction typically sees about 40 – 60% productivity rates, depending on the trade. Only half of workers’ time is spent performing work that creates finished product and roughly half of their time is spent not creating value.

There are many factors influencing the productivity and some them are:

01.       Planning and control.

02.       Lack of Information on time

03.       Rework.

04.       Clashes with different disciplines.

05.       Sharing the information at correct time to correct people.

06.       Availability of materials and equipment on time.

07.       Communication.

08.       Safety.

09.       Job Security.

10.       Language barriers.

11.       Personal matters such as mental satisfaction and living conditions.

12.       Environmental Conditions.

Out of the above reasons 08 to 12 can be over by management decisions and utilizing correct resources for task. 01 to 07 can be overcome by implementing BIM on the project.

 

How we can increase productivity through BIM?

BIM process is likely to enhance productivity throughout the building lifecycle. The ability to design complex buildings virtually, working closely with all engaged stakeholders in real time, ensures feature optimisation and high quality physical construction and production efficiency. Enhanced productivity is common to all sectors that have adopted similar modeling technologies in their supply chain activities.

Some of the functions that will increase the productivity through BIM are:

Enhanced Planning and Control

Model will help to develop different scenarios while developing the construction methodology and ability to link the model with the planning software like Primavera, MS project (Which are commonly used) will support planning and updating the program visually.

Correct Information on time and to correct people…..

The ability to store information about all the elements in the model and model is developing at the initial phase of the project; it is possible to provide relevant information to all stakeholders at the construction stage. Studies showed that number of RFI’s considerably reduced at the construction stage where BIM utilized.

Clashes with different disciplines…

Possible chances of clashes with different disciplines such as Structural, Architectural, MEP can be settled by the model at design phase.

Rework.

Reworks due to design changes and clashes with different disciplines can be avoided as

        ·         Client approved the design and facilities after visualizing the model.

·         Clashes are removed while modeling

Availability of materials and equipment on time….

Materials and Equipments can finalize at the initial stages with the model.

Improved Information sharing and Communication….

BIM process have potential to facilitate information sharing in real time between all the stages of buildings lifecycle.

Information sharing in the buildings network: before after BIM

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