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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Freephone: 0800 410 1130
E-mail: fire@lwf.co.uk

Technical Bulletins

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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 fire safety, specifies width of exit routes such that the time required for occupants to flow out of a prescriptively designed enclosure, containing a maximum design population is 150s (2.5 minutes).


Mechanical Smoke Ventilation Systems (MSVS)

Until recently, prescriptive documents such as Approved Document B (ADB) and British Standards gave guidance on smoke control systems primarily by natural means (i.e. external automatic opening vents (AOV’s) and natural smoke shafts) and pressure differential systems (namely pressurisation systems).


Mechanical Smoke Ventilation Systems (MSVS)

Until recently, prescriptive documents such as Approved Document B (ADB) and British Standards gave guidance on smoke control systems primarily by natural means (i.e. external automatic opening vents (AOV’s) and natural smoke shafts) and pressure differential systems (namely pressurisation systems).


Property and Business Continuity Protection in the UK

Building Regulations are intended to ensure that a reasonable standard of life safety is provided, in case of fire, and do not impose any requirements on the property and business continuity protection of a building.


Fire Safety in the Design, Management and Use of Residential Buildings - Code of Practice

The new code of practice for fire safety in the design, management and use of residential buildings BS9991 is published by BSI and came into effect on 31 December 2011.


Qualitative Design Review (QDR)

Qualitative Design Review or QDR is defined in PD 7974: 2001 as the initial stage of any engineering design in which the basic design parameters for a project are established and the scope and objectives of the fire strategy can be defined.


Water Mist Fire Protection in the UK

The use of water mist systems in the UK has increased over the last decade due to a number of reasons, the advantages being:


Fire Resistant Ductwork and Dampers

An important part of the infrastructure of a building is the ducting network that runs throughout the premises, it is often invisible, but is a key element to the environmental operations in a building.


The Building Regulations 2010

The requirements of Regulation 38 of the Building Regulations 2010 are those formerly covered under Regulation 16b and relate to the fire safety information to be provided by the person carrying out work.


Rising to the Residential Challenge

The recent market downturn has affected the housing industry with many developments being put on hold. As the market begins to recover and demand for homes starts to rise again many developers are reviewing residential schemes with a desire to develop more innovative residential layouts. This bulletin discusses some of the fire safety challenges of residential developments are described and how the application of performance based design can deliver economic, safe and creative residential layouts.


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FIRE SAFETY BLOGS

  • Fire Engineering Design and Risk Assessment - Firefighting & External Water Supplies - Part 33

    In LWF’s Fire Engineering blog series for Architects and others in the building design business, we have been looking at firefighting and the associated provisions that need to be made for the Fire Service. In part 32, we looked at the standards for wet and dry mains given in Approved Document B and BS 9999. In part 33, we consider dry mains in more detail.A dry rising main is comprised of pipework installed vertically...

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  • Fire Safety for Healthcare Premises - Fire Safety Policies - Part 67

    In LWF’s blog series for healthcare professionals, the aim is to give information on best practice of fire safety in hospitals and other healthcare premises. In part 66, we were discussing how fire safety policies should be formed and finished by noting that consultation with all types and levels of staff in a healthcare setting is necessary to ensure a considered and cohesive fire safety policy. In part 67, LWF will continue looking at fire...

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  • Facilities Management & Fire Safety - Insurers & Property Protection - Part 14

    LWF’s blog series for those who work in Facilities Management, or who have an interest in or responsibility for fire safety has been looking at the impact of the insurer on property protection from fire. In part 13, while acknowledging there are significant areas of overlap between life safety and property protection measures, we began to look at those areas where measures taken to protect property from fire would not benefit life safety aims, and...

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  • Fire Engineering Design and Risk Assessment - Firefighting & Internal Water Supplies - Part 32

    In LWF’s Fire Engineering blog series for Architects and others involved in the building design business, we have been looking at fire safety engineering and, most recently, firefighting. In part 31, we looked at the recommendations made regarding water capacity for any open water used for firefighting purposes and discussed relaying water to the place of fire origin. In part 32, we look at internal water supplies designed for the purpose of firefighting.Fire mains...

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  • Fire Safety for Healthcare Premises - Fire Safety Policies - Part 66

    In LWF’s blog series for healthcare professionals, our aim is to give information on best practice of fire safety in hospitals and other healthcare premises. In part 65, LWF considered some of the many important elements when considering general fire safety in a healthcare building, including the provision of alternative escape routes and the potentially unpredictable nature of human behaviour in a fire situation. In part 66, we look at fire safety policies.Clearly-defined fire...

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Case Studies

Duke of York, Victoria Street, London
The Duke of York is a busy pub in central London, used by commuters and theatre-goers alike.  In 2013, the pub was demolished in order to facilitate the London Underground Victoria Station Upgrad...

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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...

Read more..

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