By Design Tech Solutions — Experts in Heat Network Design & CDM Integration

Introduction: Why CDM Matters in District Heating

Construction projects in the UK must comply with the Construction (Design and Management) Regulations 2015 — known as CDM. These regulations place legal duties on all parties involved in the design and delivery of construction work, including district heating schemes.

With multiple phases, contractors, and utility interfaces, heat network projects can introduce significant design and delivery risk. At Design Tech Solutions, we support CDM compliance through clear roles, risk planning, and integrated documentation — ensuring safety, clarity, and compliance from pre-construction to completion.

What Is CDM 2015?

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CDM is the UK’s health and safety regulation for construction. It applies to all construction work, including civil engineering and infrastructure projects like heat networks.

The regulations aim to:

  • Improve project planning and communication

  • Identify and manage design-related risks

  • Ensure safe working practices throughout the project lifecycle

  • Define legal duties for clients, designers, principal designers, and contractors

Key CDM Roles & Responsibilities

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  • Client
    Ensures suitable arrangements are in place for managing the project, including the appointment of competent dutyholders.

  • Principal Designer
    Takes charge of health and safety during the pre-construction phase. Must coordinate risk management and ensure all designers comply with CDM.

  • Principal Contractor
    Takes charge of health and safety during the construction phase, including site management, method statements, and subcontractor coordination.

  • Designers (e.g. DTS)
    Must eliminate, reduce, or control foreseeable risks during design. Required to communicate risks clearly to the rest of the team.

How CDM Applies to District Heating Projects

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District heating involves complex sequencing, underground works, and live interfaces — making clear CDM planning critical.

Typical Risks We Address in Design:

  • Excavation hazards (collapse, underground utilities)

  • Manual handling of large pipe sections or HIUs

  • Hot works and confined spaces in energy centres

  • Disruption of live roads, pavements, or footpaths

  • Access and maintenance risks post-installation

Our design work is always accompanied by:

  • Risk assessments and hazard registers

  • Methodology notes for principal designers

  • Pre-construction information contributions

  • CDM-compliant drawings and specifications

FAQ

Does CDM apply to heat network projects? +
Yes — all heat network construction and design falls under CDM 2015, including both new build and retrofit schemes.
Is DTS a principal designer under CDM? +
No. While we are not principal designers, we support them by producing compliant designs and contributing to pre-construction information.
What design risks are common in heat networks? +
Trenching, confined spaces, hot works, and access issues are common. We plan for these from the outset.
What documentation does DTS provide for CDM? +
We contribute design risk registers, CDM annotations, method inputs, and marked-up drawings that assist principal designers and contractors.

DTS as a CDM-Compliant Design Partner

We work collaboratively with clients and principal designers to ensure:

  • Design risk is considered at every RIBA stage

  • Residual risks are clearly communicated to contractors

  • Designs include space for access, maintenance, and safe install

  • All design work aligns with the requirements of CDM 2015

We don’t just create drawings — we design for safety and buildability.

Safer Designs Start Here

We design heat networks that are not only compliant — but safe, practical, and well planned. Let’s make CDM a strength, not a stress.

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