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
Kenley
Surrey
CR8 5NH

Tel: +44 (0)20 8668 8663 Fax: +44 (0)20 8668 8583
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 - Part 14

    In LWFs fire safety engineering blog series for Architects and others in the building design business, we have begun to look at firefighting. In part 13, we began to look at how firefighting can be undertaken by the occupiers of a building if a fire starts. The use of portable fire extinguishers was discussed along with relevant training was discussed. In part 14, the provision of hose reels and the standards involved will be covered.

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  • Fire Safety for Healthcare Premises - External Fire Spread - Part 48

    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 47 of this series, LWF took a look at the use of sprinkler protection in healthcare venues and in part 48, we begin to discuss the potential for external fire spread and what precautions should be taken to avoid it.It should be borne in mind that we...

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  • Facilities Management & Fire Safety - Fire Safety Engineering & the Prescriptive Approach - Part 5

    In LWFs 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 the term ‘Fire Safety Engineering’ and what it involves. In part 4 of the series, we began to look at the differences between fire prevention and safety based on prescriptive codes and fire safety engineering. In part 5, we will continue from that point by looking at the...

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  • Fire Engineering Design and Risk Assessment - Firefighting - Part 13

    In LWF’s fire engineering blog series for architects and others in the building design business, we began discussing firefighting. In part 12, an overview of the term and its meaning before looking at the method of firefighting, namely the strategy, tactics and operations of the Fire Service in the UK and equivalent organisations in other parts of the world. In part 13, we look at firefighting by occupiers of a building.Firefighting undertaken by occupiers...

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  • Fire Safety for Healthcare Premises - Sprinklers - Part 47

    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 46 of this series, we looked at the tank arrangement for sprinkler systems and how each pump should be arranged to draw water from either tank, so that any one tank or pump can be isolated. In part 47, we continue from that point on the subject of...

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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...

Read more..

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