Project Design Handbook

A DESIGN MANAGEMENT DOCUMENT AN03 www.projectdesignguides.com

DRAFT

PDG / © / PROJECT
DESIGN
GUIDES / AN03.0

Advise Note AD03.0

‘Defining CDP’s’

Project Name:
Name / Project No.:
Number / Date:
Date
Document No.: PDG-PDG-AN-AD03.0 / Date Created: / Date Revised:
PDG / © / PROJECT
DESIGN
GUIDES / Defining CDP’s

Introduction

This Advise Note is to give guidance on the importance of defining Contractor Design Portions (CDP’s) at an early stage. Clarity on design responsibility is to be embedded in to the Consultant appointment documents through the DRM. The Main Contractor may seek to keep their options open in the build up to Tendering sub-contract packages by minimising the number of CDP’s, thereby placing more responsibility and risk on designers. This behaviour de-risks by Main contractors position, giving them choice; dependant on the availability of suitable sub-contractors and because of a growing understanding of the strengths and weaknesses of Consultants as the project progresses.

It is aimed at the principles of, or those responsible for appointment contracts between the Main Contractor and Designers. The Design Manager should be asked to inform the process and will need to understand the outcome.

Schedule of CDP

Package / Comment
MEPh / Define to which BISRA/RIBA stage Consultants are to design.
Pile foundations / Base design by Civil/Structural engineer.
MMC & DfMA systems / Setting out, element of specification (colour & finish) and co-ordination by Architect.
Unitized Facade systems / Setting out, specification and co-ordination by Architect.
Steel connections / By Structural Engineer or CDP.
Rebar / By Structural Engineer or CDP.
Sprinkler systems / Specialist only.
Bespoke fit-out items / Intent by Designers?
Access & Safety systems / Co-ordination by Architect.
Underfloor heating / Specialist of Mechanical consultant.
Lightening protection. / Specialist only.
Other

Amend as required to be project specific

Further Advice

The Lead Designer is to fully understand the co-ordination implications of CDP’s and ensure the overall design concept and detail is adhered to by the CDP’s.

Consultants should understand that if they sign up to undertaking design that is later given to a CDP, the Main Contractor may seek to deduct a corresponding design fee.

Project name: / No.