W6_Ocharlie_WBS and OMNICLASS

Problem definition

The project WBS presents one directional view for project. The 3D model and OMNICLASS present multi-view of project. How do the multi-view improve throughput in fabrication yard.

Feasible alternatives

The Project work breakdown structure presents uni-direction orientation to projects.

3D work breakdown structure presents multi-dimension view to projects 

Develop the outcome of each alternative

The project work breakdown structure can be product oriented , discipline oriented , or organisation oriented.  Shown in W2_Ocharlie_WBS blog posting.. 

OMNICLASS is a standard for organising all construction information. It consists of 15 tables which can be grouped into the three primary categories of Iso 12006-2: organisation of information about construction works-Part 2: framework for classification of information:

Organising Construction results Tables 11 – 22 which classifies asset by function, forms and space.

Organising Construction resources Tables 23, 33, 34, 35, 36, & 41 classify all resources, materials and products.

Classifying Construction processes Tables 31 & 32 which classifies the phases and services in the project life cycle.

Selection of criteria

Jean-Yves Moine developed a theory which classifies WBS in 3D model fig.1;

 

 

fig. 1 3D model WBS by Jean-Yves

 

 

Jean-Yves opines that activity (ABS) yields products (PBS) and is done somewhere (GBS). 

He developed the equation

WBS = GBS x PBS x ABS

WBS is a crossing between the 3 breakdown structures. 

Inside the WBS cube are little cubes which are one time schedule tasks. These little cubes are controlled by the resources (tools), discipline (trade) and their properties,

Analysis of alternatives

The 3D WBS theory identifies 3 main dimensions that identify the work: the zones (GBS), the Products (PBS) and the activity (ABS). Other dimensions of the work are the organisation roles, the discipline and tools.

The three major groupings of the OMNICLASS 15 tables can be modelized along Jean-Yves 3D model.

The GBS can be modelized by construction result (tables 11-22)

The PBS can be modelized by construction resources (tables 23, 33, 34, 35, 36 & 41

The ABS can be modelized by construction process (tables 31 & 32)

Inside the WBS cube are the one time schedule tasks which are coloured by the organisation roles. Each of these cubes has properties

Selection of preferred alternative

In the fabrication yard, the facilities are established in a location which is given, the phases don`t apply since fabrication activities involve short duration works. The critical dimension is the organisation of resource grouping.

Each little cube in the WBS cube is a task which has properties (table 49)-stainless steel, carbon steel, GRE, CuNifer, is dependent on material (table 41) availability, can be performed with right tool (table 35) and by trade/discipline (table 33) fig. 2

Fig. 2 OMNICLASS and 3D model by Jean-Yves

 

This presents a multi-dimension view of the activities and aids scheduling, planning, and the management of workflow to optimize throughput.

Performance monitoring and evaluation

With the multi dimension approach, jobs are prioritised considering resources, trade and delivery date.    

References

Jean-Yves Moine (2012). 3D WBS model. (online). Available at http:3D-wbs.blogspot.fr {last Accessed 14/12/2012}

OmniClass a strategy for classifying the built environment (Ed 1), 2006-03-28 Release).

Retrieved from http:www.omniclass.org/

Humphreys, G. C. (2011). Definition of Scope, Work Breakdown Structure (WBS) and Dictionary, Project Management Using Earned Value (2^nd ed.), (PP. 45-58) CA, Humphreys & Associates Inc.

Hollman, J.K. (Ed}. (2012). ,  Plan Project Scope and Execution Strategy development, Total Cost Management Framework. (PP. 147-150) WV, AACE International