Job Book 9th Edition - Book - Page 217
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Stage 4 > Technical Design: Supplementary Material: 4/SM1
Design information flow: design and build procurement
1.Origination
Design information can originate from:
• the employer client (through Employer’s Requirements with input from
their design team)
• the contractor client (through Contractor’s Proposals and subsequent
development of these, with input from their design team).
2. Coordination and integration
If acting as project lead or lead designer appointed by either the employer
client or the contractor client, responsibility for coordinating and integrating
the relevant design information may rest with the architect, always depending
on the terms of appointment.
3. Employer client’s design in Employer’s Requirements
Where an employer client includes a scheme devised by their own design team as
part of the Employer’s Requirements, some Stage 4 detail work might be relevant.
The extent of the commitment should be agreed with the client before work is
undertaken. In the event that novation is envisaged, particular care might be
needed to establish design liability. The point of changeover for design liability
from one client to the other must be carefully defined.
4. Contractor client’s design in Contractor’s Proposals
Where a contractor client is expected to offer a scheme design as part of the
Contractor’s Proposals, this may involve only a fairly limited design exercise,
or require a more developed design approach, particularly in the case of twostage tendering. Either way, some exploratory detail design work is necessary
to establish the viability of the proposal. The extent of the commitment should
be agreed with the client before work is started.
Contractor’s Proposals sometimes entail the preparation of a considerable
number of architectural drawings – general arrangement, plans, sections and
elevations, sectional and elevational details and landscape proposals. There
may also be full structural details and a substantial number of services drawings.
Obviously effective coordination and integration of the information is very
important.
5. Detail design work
Stage 4, insofar as it might be relevant for a contractor client, could continue
intermittently throughout the early stages of construction. Detail design might
be subject to fairly liberal interpretation, with last minute amendments, revisions
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