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 & Rising Water Mains - Part 36

    In LWF’s fire engineering blog series for Architects and others in the building design business, we have been talking about firefighting and rising water mains in buildings. In part 35, we began to discuss wet rising water mains and in part 36 we will continue looking at that subject before considering horizontal mains, also known as internal hydrants, which are seen more commonly in buildings with large floor area.It was established in part 35...

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  • Fire Safety for Healthcare Premises - Fire Safety Audits - Part 70

    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 69, we discussed the management of staffing levels and in addition to the number of staff available, it was important that each and every staff member had adequate training in fire and evacuation issues. In part 70, we will discuss fire safety audits and what arrangements should be...

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  • Facilities Management & Fire Safety - Business Continuity Insurance - Part 17

    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 how businesses are protected against interruption from fire. In part 16, we began an overview of the history of consequential loss insurance, which only came into being around 1900, long after life and property protection insurance.  In part 17, we continue from the 1960s.Although the increase in...

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  • Fire Engineering Design and Risk Assessment - Firefighting & Rising Water Mains - Part 35

    In LWF’s Fire Engineering blog series for Architects and others in the building design business, we have been looking at those provisions which can be made to assist firefighting in case of a fire. In part 34, we commenced looking at wet rising mains and noted that while they can be permanently connected to water mains, it is more common to see the systems connected to a water tank with a pump or gravity feed,...

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  • Fire Safety for Healthcare Premises - Fire Safety & Staffing Levels - Part 69

    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 68, LWF discussed staffing levels in terms of fire safety and the importance of the staff in attendance having sufficient fire safety training. In part 69, we will continue looking at staffing levels and fire safety concerns.The management of any healthcare venue must consider and agree what...

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Case Studies

Brentwood Town Hall Redevelopment
The redevelopment of Brentwood Town Hall included renovating the existing five storey property to provide police and council offices, a community hub and lettable office space across the basement, gro...

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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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