Lawrence Webster Forrest (LWF), Fire Engineering and Fire Risk Management Consultants
Lawrence Webster Forrest (LWF), Fire Engineering and Fire Risk Management Consultants


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Lawrence Webster Forrest
Legion House
Lower Road

Tel: +44 (0)20 8668 8663 Fax: +44 (0)20 8668 8583

Fire Engineering Solutions

Modern building design is tending ever towards larger, more open plan concepts. This design approach requires that the normally applied prescriptive fire safety standards utilised in more traditional building designs, become restrictive in their application. Statutory design guidelines give the option for developers to move away from the prescriptive fire safety constraints and use an approach that enables engineered solutions to be applied specifically to new and existing buildings.

This approach enables the designer to take full advantage of design features and to offset one fire precaution measure with others that may positively contribute towards an aesthetically and engineered optimum solution. Existing buildings, subject to redevelopment or refurbishment, can also benefit from a fire engineered approach, the benefits here in addition to potentially reduced costs and restrictive measures, can include less intrusion particularly if the building is of a Listed or ‘fine’ nature.

Fire engineering techniques require the designer to prepare a specific design for a building taking into account the features, proposed use and occupancy of the facility. Prescriptive applied standards are general in their nature and are required to be applicable to all buildings put to a similar use. For maximisation of building potential and optimisation or even feasibility of design, the fire engineer becomes an essential advisor to the facility manager or member of the project design team.

LWF are able to undertake on your behalf:

  • Identification of rationalised potential life and property losses.
  • Analysis of fire and smoke behaviour in large or complex spaces.
  • Quantified analysis of fire risk.
  • Solutions based on objective or cost benefit analysis.
  • Fire safety measures that fully utilise and take maximum advantage of existing building features.
  • Solutions that optimise capital outlay by prioritisation.
  • Computer aided modelling for detailed scenario prediction.
  • Analysis of occupancy and populations distribution to optimise emergency evacuation procedures.
  • Determination of integrated schemes using state of the art detection and suppression.
  • Tailor-made services to address special or high risks, including special-needs occupants, security, special hazards and salvage requirements.
To discuss your requirements with one of our specialist staff, please call 
020 8668 8663.

Our Services

To discuss any of our services please call 020 8668 8663 or email

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  • Fire Safety for Healthcare Premises - Structural Fire Protection Provision - Part 14

    In LWF’s blog series for healthcare professionals, the aim is to give advice and information on best practice of fire safety in hospitals and other healthcare premises. In part 13 of this series, the emergency plan was looked at from the viewpoint of ensuring that there were sufficient numbers of trained staff to execute an evacuation if necessary. In part 14, LWF takes a look at the design and construction of the building and the...


  • Facilities Management & Fire Safety - Fire Development & Human Behaviour - Part 5

    In LWF’s blog series for those who work in facilities management, or who have an interest in or responsibility for fire safety, we have been looking at human behaviour when a fire starts and is developing. In part 4, the necessity of interesting and instructive fire safety training to impress the need for immediate and appropriate action was outlined. In part 5, we look at ‘panic’.The thought that people react to a fire situation...


  • Fire Engineering Design and Risk Assessment - Sprinkler Installation Design - Part 38

    In LWF’s fire engineering blog series for architects and others in the building design business, we have recently been looking at the design of sprinkler system installations. In part 37, the importance of a providing a sufficiently reliable water supply was discussed. In part 38, we talk about the need to ensure design objectives are met through thorough commissioning and testing of the completed installation.Unlike the majority of other piped installations, a sprinkler system...


  • Fire Engineering Design and Risk Assessment - Sprinkler Installation Design - Part 37

    In LWF’s Fire Engineering blog series for Architects and others in the building design business, the use of sprinklers as a method of fire suppression is being explored. In part 36, the sprinkler system grid design was discussed along with the graphs to be produced which contain data on demand curves. It was ascertained that the point at which the most favourable curve intercepts the pump curve at its highest point is known as Qmax,...


  • Facilities Management & Fire Safety - Fire Development & Human Behaviour - Part 4

    In LWF’s blog series for those who work in Facilities Management or who have an interest in or responsibility for Fire Safety, we have been looking at people’s reactions to a fire starting and their actions resulting from that. In part 3, the fact that other matters may seem pressing to individuals in a fire situation – such as settling a bill or getting a meal they’d already paid for – and the resulting actions...


Case Studies

The Wohl Neuroscience Institute - Fire Safety, Strategy & Engineering
Key Facts: Client: King’s Clinical Neuroscience Institute Project Manager: MACE Ltd Designers: Devereux Architects/Allies and Morrison Approximate Size: 7,400m2 Description of the Project:...

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General Bulletins

Fire - The External Risk
When we consider fire safety, our focus is normally from within, what can we do to prevent the occurrence of fire and how we can limit its damage.  Whilst this is the correct stance to take, we m...

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Technical Bulletins

Evacuation Modelling - Factor in Human Behaviour
Evacuation of buildings can be analyzed in different ways. Approved Document B (ADB) which provides guidance on meeting the requirements of the England and Wales Building Regulations with regard to fi...

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