SDESmith Design Engineering

Services

MEP design services

Mechanical, electrical and public health design, delivered in-house and coordinated together at RIBA Stages 0 to 7.

MECHANICAL

Mechanical services design

Heating, ventilation, cooling and controls design for commercial, retail, education and industrial buildings across the UK.

  • BMS and controls design

    Building management system and controls design, including control philosophy, points schedules and commissioning requirements.

  • Domestic water services design

    Domestic water services design with calculated demand, sized storage and generation, and legionella risk designed out at layout stage.

  • Drainage design

    Above and below ground drainage design to BS EN 12056 and BS EN 752, including stack sizing, gradients and adoption requirements.

  • Gas services design

    Natural gas and LPG installation design — supply capacity, pipe sizing, ventilation and the safety requirements of IGEM standards.

  • Heating and cooling design

    Heating and cooling design — HVAC loads, plant selection and a control philosophy that can be commissioned.

  • Ventilation design

    Natural, mechanical and mixed-mode ventilation design to Approved Document F or Technical Handbook Section 3, with calculated rates.

ELECTRICAL

Electrical services design

LV distribution, lighting, small power, fire alarm and life safety design to BS 7671:2018+A4:2026 for buildings across the UK.

  • Fire alarm and detection design

    Fire detection and alarm system design to BS 5839-1:2025, with the system category agreed against the fire strategy.

  • LV distribution design

    Low voltage distribution design including maximum demand, cable sizing, volt drop, earth fault loop impedance and discrimination.

  • Lighting and emergency lighting design

    Interior, exterior and emergency lighting design to BS EN 12464-1:2021 and BS 5266-1:2025, with calculated illuminance, glare and uniformity.

  • Security systems design

    Access control, intruder alarm and CCTV design — zoning, containment and interfaces resolved with the fire and escape strategy.

  • Small power and data design

    Small power layouts and structured cabling design — final circuits, containment, comms rooms and the loads a fit-out actually draws.

  • Utilities and renewables design

    Incoming supply applications, substation and metering requirements, and PV, battery storage and EV charging design and connection.

SUSTAINABILITY

Sustainability and net zero design

Part L and Section 6 compliance, energy modelling, heat decarbonisation and Passivhaus design for buildings across the UK.

DIGITAL AND BIM

BIM and digital delivery

Revit modelling, clash detection and information management to BS EN ISO 19650 for MEP design and coordination.

  • BIM modelling at every level of detail

    MEP models produced at the level of information need the stage requires, from LOD 100 massing to LOD 500 as-installed record.

  • COBie data delivery

    COBie deliverables to BS 1192-4, with asset data structured, populated and validated against the employer information requirements.

  • Full BIM services and information management

    The BS EN ISO 19650 information management role: BIM Execution Plan, information requirements, common data environment, federation and delivery reporting.

  • MEP coordination workshops

    Chaired workshops that resolve MEP clashes against the architectural and structural models, with every decision recorded, assigned and closed out.

  • Revit MEP modelling, RIBA Stages 0 to 7

    Revit MEP modelling through every RIBA stage — concept space reservation, spatial coordination, technical design and record model.

  • Stage 5 contractor design

    MEP design for contractors and design-and-build appointments: Stage 4 taken to installation information, or the contractor design portion produced outright.

SURVEYS AND COMPLIANCE

Building services surveys and compliance

Condition surveys, electrical periodic inspection reporting and statutory compliance audits for existing buildings.

  • M&E dilapidations surveys

    Mechanical and electrical input to schedules of dilapidations, for landlords and tenants — what the lease actually requires, costed, and defensible.