ABSTRACT

Construction projects are one-of-a-kind undertakings

characterised by one-of-a-kind products and proc-

esses, complex one-of-a-kind partner relationships,

frequently changing tasks and high dependency on

external factors like weather, transportation, various

socio-political aspects etc. In such virtual organisation

environments achievement of dynamic (ad hoc) proc-

ess support is a critical issue as comprehensive process

planning is rarely possible in advance. Indeed, model-

lingof the constructionprocess canbedoneat theout-

set using e.g. theARISmethodology (cf. Scheer 2000),

and event-driven process chains (EPCs) in particular.

However, EPCs lack fully formalisedmechanisms that