Job Book 9th Edition - Book - Page 327
ONLINE VERSION
Contractor Engagement
P.1
Introduction
With Procurement set out as a variable task bar in the RIBA Plan
of Work 2013, tendering activities do not have a specific place in
the chronology of a project. Tendering activities have therefore
been set out here as a separate chapter. Procurement under the
RIBA Plan of Work 2013 includes assembling the project team,
but this section refers only to contractor and subcontractor
engagement.
Traditional procurement
Tendering involves the assembly and coordination of the
Developed Design and Technical Design into the tender package.
In addition, it is the stage when the final cost plan is prepared
by the cost consultant. This is an essential final check – before
proceeding to tender – that the design as currently developed
still meets the client’s budget. It should be noted, however,
that the cost plan should be updated regularly throughout the
design process, with increasing levels of predictive accuracy.
If the estimate reveals any unanticipated problems then some
adjustment of the Technical Design may be needed before going
out to tender. If this is the case it will require careful management
and collaboration from all concerned.
Design and build procurement
In design and build procurement, tendering activities may
occur at different points in the Plan of Work. In cases where the
client wishes to tender on detailed information, the stages may
follow something close to the normal sequence, but in others,
where the design and build contract is entered into on minimal
information, tendering may follow Stage 2, with Stages 3 and
4 occurring after the Building Contract is let, and sometimes
during construction. It can also occur after Stage 3 or even
Stage 4. Design and build procurement can also be undertaken
as a two-stage process.
Management procurement
With management procurement, the amount of Technical Design
information available at the commencement of the project will
be limited to the extent that much of the detailed information
will be supplied by the works contractors in the form of shop or
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