Electrical & Mechanical




Renewable technology, energy conservation and sustainability are at the forefront of modern railway design. Fully embracing these principles our team have expertise in all aspects of electrical and mechanical design required for both surface and underground railway environments. Case studies >


We undertake load modelling and design power distribution systems. These include dual supply arrangements, standby systems and earthing & bonding strategies for AC and DC environments.

We cover lighting and lighting control systems for depots, stations, tunnel and trackside locations. We use energy saving principles to develop our designs.

We design fire detection systems and support the development of fire strategy.

We design cable management solutions which include architectural CMS, station containment, trackside 'J' hanger routes and ballasted trough routes.

We design control systems such as BMS and SCADA systems from concept through to final wiring. See also SCADA and SMS >


Our expertise covers station ventilation, heating & cooling and hot & cold water including rain water harvesting. We design drainage systems for rain water and waste. We optimise their performance within the built environment ensuring full co-ordination with architectural and building designers.


Gradient consulting engineers

Our Consulting Engineering division provides professional services for telecommunications, building services and associated railway systems.

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Gradient telecommunications

We are a telecommunications integrator. We develop user requirements into robust design solutions across the spectrum of system technologies.

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Gradient surveying

We undertake a wide range of surveying tasks such as asset condition, spatial, cable tracing, record correlation, buried services, utilities etc. We deploy staff with the right technical experience to identify...

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Gradient BIM

BIM allows us to create and manipulate our installations in a virtual world, showing how they integrate with all other elements of the built environment so our clients and stakeholders can visualise exactly...

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Gradient electrification and plant

We cover 750V DC supplies; substations; impedance protection systems; earthing and bonding solutions for both AC & DC scenarios;

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Gradient systems interface management

Progressing construction works in the operational environment requires comprehensive planning of cabled infrastructure.

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Gradient control room design

We recognise the operation of a control room has critical implications which create higher demands on engineering than for other built space.

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Gradient scada and sms

We have designed, specified and delivered SCADA and station management systems for a wide range of different applications on surface and underground rail infrastructure.

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Gradient project management

We have a large team of industry professionals who we can deploy to help support and deliver rail infrastructure projects.

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Gradient case studies

To find out more about the projects we have delivered within the transport infrastructure sector please view our case studies.

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Wessex Capacity Enhancement - Waterloo Station & Outlying Areas

Wessex Capacity Enhancement - Waterloo Station & Outlying Areas image

Fourway partnered with Amey to develop a comprehensive picture of existing asset information to support the Capacity Enhancement Programme. Rather than the two organisations retaining their corporate identities to form a rigid, hierarchical relationship we created a single collaborative project organisation. Whilst the bid responsibilities


Crossrail West - GRIP 5

Crossrail West - GRIP 5 image

Fourway is providing GRIP 5 engineering for Crossrail West. Appointed by Taylor Woodrow for MEP, SISS and E&P our design team is co-located in a central office forming a collaboration with the construction team, NR engineers, the civil engineering consultant and architect.


Kings Cross Station Southern Square - MEP and SISS

Kings Cross Station Southern Square - MEP and SISS	 image

Fourway delivered the MEP and SISS package for Kings Cross Southern Square project the final transformation of the Regeneration Programme. We worked closely with our client J. Murphy to integrate our construction works into the overall programme ensuring minimal disruption to the public.


South East Train Lengthening Programme - Ops Telecomms, MEP & SISS

South East Train Lengthening Programme - Ops Telecomms, MEP & SISS image

For South East Train Lengthening Fourway provided the ops telecomms, SISS DOO CCTV and MEP engineering and delivery to Morgan Sindall Colas JV over a two year period. The work involved providing a detailed design and scope of works to suit the 34-station programme.