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

Click on a bulletin to view details.

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

  • Facilities Management & Fire Safety - Smoke Control - Part 3

    In LWF’s fire safety blog series for those who work in Facilities Management or who have an interest in or responsibility for fire safety, we have been looking recently at smoke control in buildings. In Part 2, we talked about how the spread of smoke can not only cause danger to those people trying to evacuate the building, but can also damage the building and contents extensively. In Part 3, we will begin to look...

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  • Fire Engineering Design and Risk Assessment - Sprinkler Heads - Part 17

    In LWF’s Fire Engineering Design and Risk Assessment blog series for architects and others in the building design business, we are talking about sprinkler systems. In part 16, we looked at hazard classifications for sprinkler system design, in part 17, we’re going to discuss sprinkler heads.Sprinkler heads are an important part of a sprinkler system and the most visible part to building occupants. Although sprinkler head design differs depending upon requirements, the majority act...

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  • Facilities Management & Fire Safety - Smoke Control - Part 2

    In LWF’s blog series for those who work in Facilities Management or who have an interest in or responsibility for fire safety in buildings, we have been looking at smoke control and its importance in terms of successful evacuation of the building and levels of damage to the building and contents. In Part 2, we will continue looking at the potential for smoke damage before exploring how smoke moves and spreads.The ‘man on the...

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  • Fire Engineering Design and Risk Assessment - Hazard Classifications - Part 16

    In LWF’s fire engineering and risk assessment blog series for architects and those working in the business of building design, we have been looking at hazard classification of risks in relation to sprinkler installations. In Part 15, the nature of high hazard risks was outlined along with the extreme consequences should a fire occur in a high hazard risk building. It was ascertained that sprinkler protection must be designed specifically for the risk. In Part...

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  • Fire Engineering Design and Risk Assessment - Hazard Classifications - Part 15

    In LWF’s Fire Engineering Design and Risk Assessment blog series for Architects and others involved in building design, we have been looking recently at sprinkler protection and the hazard classifications which exist to indicate the type of risk with which the sprinkler must cope. In Part 14, we discussed Light Hazard risks and began to talk about Ordinary Hazard risks, Part 15 will continue from that point.While it is not always possible to wholly...

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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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