ABSTRACT
Client requirements are initially defined and elic-
ited in the early stages of a project but clients
constantly review and change the requirements
of their facilities. The documented brief there-
fore needs to be modified. It then becomes vital
to trace the changes, describe and follow the life
of the requirements, including changes effected on
them. Traceability is therefore a key part of good
requirements management. Lack of adequately
managing requirement changes contributes
adversely to construction budget and schedule
overruns. Similarly, Shiau and Wee (2008) claim
that delays in product developments are common
due to continuous changes in design projects and
Nadia et al. (2006) also claim that many of these
changes are from customers as emerging require-
ments or as variations.
