Session 4 - Designers

CDM 2007 Training
Session 4 - Designers
Version: September 07
Who are designers? (1)
A ‘designer’ has a wide definition under CDM
If you design or specify building work, then you
are a designer with duties under CDM
Duties apply to all projects, including nonnotifiable and domestic
It includes people who prepare
– Drawings
– Design details, analysis and calculations
– Specification and Bills of Quantities
The design could be on paper, computer or
CDM 2007 Designers – Slide 2
Who are designers? (2)
Designers include
– Civil and structural engineers
– Building services engineers
– Those specifying or purchasing materials
– Temporary works designers
– Interior fit out designers
– Clients who specify
– Design and construction contractors
– Statutory bodies that require features that are not
statutory requirements
Statutory requirements are exempted i.e. Building Regs
requirements are not designs under CDM 2007
CDM 2007 Designers – Slide 3
Who are designers? - Overseas
Where the design work is undertaken by
oversees designers, the designers duties
under CDM 2007 falls on:
– Person who commissions it if in GB or
– The client for the work
CDM 2007 Designers – Slide 4
Duties on designers (1)
Designers have to:
– Ensure clients are aware of their duties
– Make sure they (the designer) are
competent for the work they do
– Co-ordinate their work with others as
necessary to manage risk
– Co-operate with CDM co-ordinator and
– Provide information for the health and
safety file
CDM 2007 Designers – Slide 5
Duties on designers (2)
Designers have to avoid foreseeable risks
– Eliminating hazards from the
construction, cleaning, maintenance,
and proposed use (workplace only) &
demolition of a structure
– Reduce risks from any remaining
– Give collective risk reduction measures
priority over individual measures
CDM 2007 Designers – Slide 6
Duties on designers (3)
Designers must also:
Take account of the Workplace (Health,
Safety & Welfare) Regulations 1992 when
designing a workplace structure
Provide information with the design to
assist clients, other designers, &
In particular – inform others of significant
or unusual/ “not obvious” residual risks
CDM 2007 Designers – Slide 7
Duties on designers (4)
Designers have to be given relevant
information by the CDM co-ordinator
Risks which are not foreseeable do not
need to be considered
CDM 2007 does not require “zero risk”
Amount of effort made to eliminate
hazards should be proportionate to the
CDM 2007 Designers – Slide 8
HSE’s expectation of Designers apply the ERI(C) principles (1)
Eliminate hazards
• By experience
• By red amber green lists (optional)
• By challenging existing practice
• By considering implications of their actions
• By talking/listening to contractors
• By complying with Workplace (Health, Safety and
Welfare) Regulations 1992
Reduce remaining risks
- Collective measures
- Individual measures
CDM 2007 Designers – Slide 9
HSE’s expectations of designers –
apply the ERI(C) principles (2)
Inform others
Provide relevant information to project
team: other designers, CDM co-ordinator,
In particular: highlight significant, “not
obvious” risks, & those that are difficult to
CDM 2007 Designers – Slide 10
Designing out risk – example of
what can be done
Simple design
measure to reduce risk
CDM 2007 Designers – Slide 11
Designing out risk – example of
what not to do
Inherent risks for future
maintenance of flue pipe
CDM 2007 Designers – Slide 12
Designers - Information
Provide the right information to the right
people at the right time
How to inform
– Method of informing is optional
– Notes on drawings
– Written information with the design
– Suggested sequence of construction
(only if not obvious)
If in doubt – discuss it
CDM 2007 Designers – Slide 13
Designers – co-operation
• A more managed approach will be necessary for larger
– integrated team involving designers, principal
contractor and other relevant contractors
– the appointment of a lead designer, where many
designers are involved
– agreeing a common approach to risk reduction during
– meetings of the design team (including the CDM coordinator) with contractors, and others
– regular reviews of developing designs
– encourage site visits, so designers can see how risks
are managed on site and vice versa
CDM 2007 Designers – Slide 14
Designers - Paperwork
Competent designers eliminate hazards and
reduce risks – manage the risk, not paperwork.
Design risk assessments (DRAs) are seen by
many as unhelpful and should be discouraged
– Just say no to thoughtless DRA but yes to
eliminating hazards
CDM 2007 does not require designers to
produce copious amounts of paperwork detailing
generic hazards and risks
CDM 2007 Designers – Slide 15
Designers - Records
Designers under CDM 2007 are not
legally required to keep records of the
design process
– Brief records why key decisions were
made will be helpful when designs are
passed to another, to prevent decisions
being reversed for the wrong reasons
CDM 2007 Designers – Slide 16
Designers – design review
A process of design review will help to
ensure buildability, usability, &
Designers should involve the contractor
when reviewing buildability
Designers should involve the client (or
building operators) when reviewing
usability and maintainability
Involve the CDM co-ordinator if project is
CDM 2007 Designers – Slide 17
Additional duties for notifiable
Check that the client has appointed a
CDM co-ordinator
Only ‘initial’ design work is permitted until
a CDM co-ordinator has been appointed
Co-operate with the CDM co-ordinator,
principal contractors and with other
designers or contractors so all can
confirm with their CDM duties
Provide relevant information for the health
and safety file
CDM 2007 Designers – Slide 18
Designers - “Do not……”
And never have been asked to control risk on site - they
can only influence what is within their control
Take into account unforeseeable hazards and risks
Specify construction methods, except where the design
requires a particular construction sequence
Exercise a health and safety management function over
contractors or others
Have to consider trivial risks
Design for possible future uses of structures that cannot
reasonably be anticipated from their design brief
CDM 2007 Designers – Slide 19
Designers – Key messages
If you design or specify building work, then you
are a designer with new duties under CDM
Competent designers eliminate hazards and
reduce risks – manage the risk, not the
Design for safety and health for those that build,
use, maintain and demolish – it’s safer by design
Tell others about significant risks which remain –
give the right information to the right people at
the right time
CDM 2007 Designers – Slide 20

similar documents