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

Case Study: Restoration of a 1730's Historic Building - Fire Risk assessment, ignition

Project

The proposed restoration project of Christ Church, Spitalfields London incorporates the proposed use of timber panelling against the internal perimeter walls on the ground and gallery levels to a height of 2.4m. The proposed panelling has a class 3 rating as opposed to the requirement from the building regulations for a class 1 product. The effect of this decrease is on the rate of surface spread of flame and fire propagation. The requirement is common to all buildings and does not consider the 'personality' of each specific building.

Difficulties

The main focus of the project was to restore the Church to its original state. The concern with the adoption of the retardent paint to the oak timber was the resulting finish that exists as opposed to the design intent. Not withstanding this design feature, if it was considered unnecessary - then why undertake the works.

Alternative Solution

The personality related to this Church was investigated and the risks considered. A case specific assessment of ignition and fuel load was assessed. The main aspects of concern were arson, naked flame associated with candle use and electrical sockets. Each were considered and addressed by a combination of management requirements the factor of most concern addressed by unobtrusive and very cost effective solution using concealed fire stopping products.

Benefit

The overall benefit brought to the restoration by LWF was the ability to maintain the design intent by creating an alternative solution that was inobtrusive to the restoration project.

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FIRE SAFETY BLOGS

  • Fire Engineering Design and Risk Assessment - Firefighting & External Water Supplies - Part 27

    In LWF’s Fire Engineering blog series for Architects and others in the building design business, we have been looking at fire safety engineering. In part 26, we looked at how the choice of fire hydrant can affect the efficiency of delivery and by working out the additional time required to prime an underground hydrant when compared to a pillar hydrant with instantaneous couplings, it was established there could be as much as 2 minutes delay...

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  • Fire Safety for Healthcare Premises - Venting of Basements - Part 61

    In LWFs 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 60 of this series, the placement of fire hydrants in relation to hospital buildings was discussed. In part 61, we will look at the effects of smoke on basement levels and the use of venting.A fire which starts in a basement or involves a basement level causes...

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  • Facilities Management & Fire Safety - Insurers & Property Protection - Part 8

    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 the part Insurers have played in property protection over the years. In part 7, we discussed the role the FOC played in producing rules and regulations not only for building standards but also for fire protection products. In part 8, we will continue looking at the impact of...

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  • Fire Engineering Design and Risk Assessment - Firefighting & External Water Supplies - Part 26

    In LWF’s fire engineering blog series for Architects and other interested parties in the building design business, we have been looking at firefighting. In part 25, we looked at how hydrants should be located in relation to the building perimeter and the likely position of a Fire Service pump upon attending a fire at the premises. In part 26, we continue looking at location and also the type of hydrant provided in relation to the...

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  • Fire Safety for Healthcare Premises - Fire Mains - Part 60

    In LWFs 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 59 of this series, LWF discussed the requirements for healthcare buildings with a hospital street and which do not require a fire-fighting shaft. In part 60, we will look at the provision of fire mains.Fire mains must be provided in every firefighting shaft, or in some instances,...

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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...

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