Under my week 7 blog, we considered the use of a 3D WBS and the most suitable Omniclass table using the standard dimensions of ZONE (ZBS), ACTIVITY (ABS) and PRODUCT (PBS).
This is only 1 combination and can be expanded to include other aspects of a projects performance to enhance visibility. This expansion will take the form of additional breakdown structures as well as different combinations with each providing a unique and different perspective on the project.
And whilst there could be a large number of combinations available, the selection of the preferred combination(s) will largely depend on stakeholder requirements.
In this blog we will stay with the SPJ – package 12B project and use the EPCC Contractor as the Stakeholder and consider some typical requirements which an EPCC contractor may have when analysing their works and progress of the package 12B project.
We will establish which Combination of Breakdown structure should be considered to provide the EPCC with a clear view of those aspects which it considered important.
Once a determination of most relevant combination is made, we will select the most appropriate Omniclass table to support the Break down structure and filtering options.
We will consider the following breakdown structures in a 3 dimensional combination;
If we limit to only 3 dimensions, or fields, then the maximum number of permutation is as follows;
Development of the Alternatives
Each Breakdown Structure provides the EPCC with a unique set of information. This may be summarised as follows;
We will consider the following aspects as the basis for determining which are the relevant WBS combinations and dimensions;
Comparison of Alternatives
By considering the needs of each monitoring requirement and then relating these needs to the relevant breakdown structure, we can reduce the number of combinations to only 10.
Selection of the Alternatives
As determined under the week 7 blog posting, the relevant omniclass tables which would support the package 12B project scope were;
- PRODUCT / SYSTEM- Table 23
- PHASE – Table 31(2006)
- AREA – Table 14
- WORK ACTIVITIES – Table 22
The same tables could be used to establish the project ABS (Table 22&31), PRBS(table 23) and ZBS (Table 14) as noted above. The Omniclass table 35 & 33 would support the RSBS and definition of plant and labour.
The development of Breakdown structures for elements such as CTBS/ CLBS and CHBS would require project specific formats and structures. Combining these formats with the Omniclass system would require further assessment and considerations
1. OmniClass. (2014). About OmniClass. Retrieved from OmniClass: http://www.omniclass.org/
2. Moine J-Y. 2013.3D Work Breakdown Structure Method, PM Word Journal Vol. II, Issue IV–April 2013
3.Combinatoric: Generator of Combinations. Retrieved from https://planetcalc.com/3757/
4. Chapter 3.4 creating the WBS – Guild of project controls compendium and reference (CaR) | Project Controls – planning, scheduling, cost management and forensic analysis (Planning Planet). Retrieved from http://www.planningplanet.com