Sustainable Fire Engineering
Evacuation Chair Devices – Fire Engineering for All in Buildings ?
This post has been running around in the back of my mind for quite some time … and I know now, for far too long ! But recently, my patience with certain manufacturers and suppliers of evacuation chair devices has reached its limit.
In relation to Building Users … previous posts have examined the technical term: Place of Safety (see the post dated 2009-10-24) … and why this concept is an essential starting point in the development of any practical … and comprehensive … fire engineering strategy for a building.
Previous posts have also explored the complex issue of Areas of Rescue Assistance in a building (see posts dated 2009-03-10 & 2009-03-17).
For the purposes of this discussion, now, a clear statement of Fire Engineering Design Objectives is required …
- Evacuation for All Building Users … with an assurance of health, safety and welfare protection during the course of that evacuation.
- Sustain Building Serviceability during Evacuation … at the very least, while people are waiting in Areas of Rescue Assistance … and, until all of those people can be rescued by Firefighters and can reach a Place of Safety.
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We are rapidly approaching the day when all lifts/elevators in a building must be capable of being used during the course of a fire incident. AND … these lifts/elevators must be situated so that … alternative, safe and intuitive means of evacuation … are effectively presented to all building users.
Greedy vested interests continue to impede the onset of that inevitable day.
Another surprising barrier to the implementation of this goal, however, is the sloppy and incompetent drafting of fire engineering design standards and codes of practice. Previous posts have discussed … and shown … some of the serious problems with British Standard BS 9999 – Code of Practice for Fire Safety in the Design, Management and Use of Buildings (2008).
A ‘Restricted’ Architectural Vocabulary is yet another barrier to implementation. High-Rise and/or Complex Buildings are still typically being designed for Access … not Evacuation ! This fault very definitely lies with the architectural and engineering schools throughout Europe.
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Until all lifts/elevators in a building are capable of being used during the course of a fire incident … there is an obvious and pressing need for a fire engineering design solution which involves the installation, maintenance and proper use of Approved Fire Evacuation Chair Devices … which need to be powered or manual depending upon the particular circumstances in a building !
AND, even when all lifts/elevators are capable of being used during the course of a fire incident … because lifts/elevators must always undergo routine servicing and maintenance and they will not, therefore, be in operation for short periods of time … there will still be an obvious need for Approved Fire Evacuation Chair Devices. So, these fire-evacuation related products should never be regarded as a wasted investment !
I have repeated the word ‘Approved’ because, unfortunately, since these are also disability related products … insufficient attention, and emphasis, is given to Product Approval in this Market Sector, i.e. showing that the product is ‘fit for its intended use, in the location of use’.
At the most basic level imaginable … National Building Regulations in the European Union Member States, and E.U. Safety at Work and Product Liability Legislation … all demand Product Approval.
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Performance Requirements for Fire Evacuation Chair Devices: Fire Evacuation Chair Devices, powered or manual, must be capable of …
- being safely and easily operated ;
- carrying people of large weight (150 Kg minimum) ;
- going down staircases which, in existing buildings of historical, architectural and cultural importance, may be narrow and of unusual shape ;
- travelling long distances horizontally … in a robust and stable manner … both within a building … and externally, perhaps over rough ground … in order to reach a Place of Safety.
When going up a staircase is necessary in order to reach a Place of Safety, a powered evacuation chair device must be provided !
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Fire Evacuation Staircases: A vivid image, with a few accompanying words, are necessary …
Unlike the incredible scene shown in the colour photograph above ... Fire Evacuation Staircases must be suitable for Safe, Intuitive and Unhampered Building User Evacuation, Firefighter Contraflow and the Assisted Evacuation of People with Activity Limitations. A Minimum Clear Width of 1.5 Metres (from edge of handrail to edge of handrail !) is required. Click to enlarge.
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Fire Evacuation Chair Devices & What To Avoid: Can you spot the Evacuation Chair Device in the first photograph below ?
Colour photograph showing a Fire Evacuation Chair Device Installation at Dublin Airport, Ireland. On so many levels and in so many ways, this 'decorative' installation ... intended to demonstrate that an organization is complying with legislation ... will prove to be, in the event of a real fire emergency, SO wrong and unworkable. Photograph taken by CJ Walsh. 2008-04-04. Click to enlarge.
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Colour photograph showing a Manual/Gravity Fire Evacuation Chair Device in operation. Transfer from a wheelchair to this type of device at the top of a staircase can be difficult and hazardous ... it can only travel down a staircase, using gravity (never up, against gravity !) ... and during horizontal travel, it is shaky and unstable. Click to enlarge.
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Fire Evacuation Chair Devices & Issues To Carefully Consider: Modern wheelchairs come in all shapes, sizes and styles … are highly adapted by their owners … and can be very expensive. Why is it a surprise, therefore, to learn that most wheelchair users will not want to abandon their expensive personal property, i.e. the wheelchair, in the event of a real fire emergency.
The answer, of course, is PROPER CONSULTATION with All Building Users (where these are known !) during the preparation of a Fire Defence Plan for a Building.
The following photographs illustrate different aspects of the capability of Powered Fire Evacuation Chair Devices …
Colour photograph showing a Powered Fire Evacuation Chair Device in operation. This particular device facilitates evacuation, down and up a staircase, using the person's own manual wheelchair. Having completed its task at the bottom (or top !) of a staircase ... the device can be quickly released for use by another person who needs assistance on the staircase. Throughout this process, wheelchair users move independently to a Place of Safety. Click to enlarge.
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Colour photograph showing another Powered Fire Evacuation Chair Device. This particular device facilitates evacuation of an adapted manual wheelchair, which may (or may not !) be the person's own wheelchair. It also facilitates travel on narrow or unusually shaped staircases. Click to enlarge.
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Colour photograph showing a Powered Fire Evacuation Chair Device in operation. This particular device facilitates evacuation, down and up a staircase. It is also robust and stable while travelling horizontally ... both within a building ... and externally, perhaps over rough ground ... in order to reach a Place of Safety. Click to enlarge.
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Product Approval in the European Union Single Market: Fire Evacuation Chair Devices must be permanently CE Marked … including the product itself, any cover (such as that shown in the Dublin Airport photograph above), all product literature, and any product packaging.
It is not acceptable to print the CE Mark on an adhesive label … and then stick the label to the product ! Correct informative text must always accompany a CE Mark !
Please note that the CE Mark is not a Safety Mark. A CE Mark denotes conformity with the Essential Requirements of a single, specific European Union Directive.
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ISO/IEC Guide 71 & CEN/CENELEC Guide 6 – Flawed ?
International Guidance Document … ISO/IEC Guide 71 : Guidelines for Standards Developers to Address the Needs of Older Persons and Persons with Disabilities was issued in November 2001.
European Guidance Document … CEN/CENELEC Guide 6 : Guidelines for Standards Developers to Address the Needs of Older Persons and Persons with Disabilities … a similar document … was issued a little later, in January 2002.
These Guides provide basic guidance to people drafting International & European Standards on how to take into account the needs of people with activity limitations, particularly older persons and people with disabilities. While recognizing that some people with very extensive and complex impairments may have requirements beyond the level addressed in these documents, a very large number of people have minor impairments which can easily be addressed with a very small change of approach by people writing the Standards. Typically, the problem is solely a lack of awareness.
Unfortunately, few Standards Developers … in either organization … are paying the slightest bit of attention to these Guides.
People with Activity Limitations: Those people, of all ages, who are unable to perform, independently and without aid, basic human activities or tasks – because of a health condition or physical/mental/cognitive/psychological impairment of a permanent or temporary nature.
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1. A full six months before the appearance of ISO/IEC Guide 71 … all of the 191 Member States of the World Health Organization endorsed, and officially adopted, the International Classification of Functioning, Disability & Health (ICF) on 22nd May 2001 … which replaced the earlier International Classification of Impairment, Disability & Handicap (ICIDH), dating from 1980.
While the previous health indicators had been based on the mortality (i.e. death) rates of populations … the new 2001 WHO ICF dramatically shifted the focus to ‘life’ and ‘living’ … in other words, how everyone is living with his/her health condition(s) and how improvements can be made to ensure a productive, fulfilling life in society.
This had important implications for medical practice; for legal, social, economic, institutional, design and spatial planning policies to improve accessibility, equal opportunity for all and inclusion; and for the protection of the rights of all individuals and groups.
Of special interest for people involved in any of the technical fields mentioned above … the 2001 WHO ICF also introduced a new disability-related language and terminology.
BUT … But … but … ISO/IEC Guide 71 and CEN/CENELEC Guide 6 do not use the 2001 WHO ICF’s innovative language and terminology. Consequently, these International & European Guides are flawed.
For a very good example of WHAT MUST BE AVOIDED (!) in the drafting of International & European Standards … please examine the following text …
ISO DIS (Draft International Standard) 21542 : Building Construction – Accessibility and Usability of the Built Environment … dated November 2009 …
Section 3 Terms & Definitions
‘ #3.36 Impairment
Limitation in body function or structure such as a significant deviation or loss which can be temporary due, for example, to injury, or permanent, slight or severe and can fluctuate over time, in particular, deterioration due to ageing.
[ISO/TR 22411:2008]
NOTE 1 Body function can be a physiological or psychological function of a body system; body structure refers to an anatomic part of the body such as organs, limbs and their components (as defined in ICIDH-2 of July 1999).
NOTE 2 This definition differs from that in ISO 9999:2002 and, slightly, from ICIDH-2/ICF: May 2001, WHO: ‘any loss or abnormality of a body function, or body structure’.
NOTE 3 The word ‘abnormality’ is strictly used here to refer to a significant deviation from an established population mean, within measured statistical norms. Impairments can be physical, mental, cognitive or psychological.’
As clear as mud … what a mess ! This does nothing only sow needless confusion in the mind of a reader.
Unless and Until … we properly harmonize, at a technical level, disability-related language and terminology … in order to improve communication … we will all continue to run around in circles and make little forward progress !!!
[ At the level of the individual, people should always be free to use whatever language they wish. ]
Our Guidance to All Standards Developers is … whether working within the International Standards Organizations (ISO & IEC) or the European Standards Organizations (CEN & CENELEC) … or both …
‘ People with Activity Limitations must be properly considered at all stages in the development of a Standard … and any disability-related terminology used … should be fully consistent with the World Health Organization’s 2001 International Classification of Functioning, Disability & Health (ICF). Confusing and contradictory texts should be avoided.’
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2. In relation to ISO/IEC Guide 71 & CEN/CENELEC Guide 6 – Table 7 (Page 13 in both Guides) … #8.23 Fire Resistance requires a complete re-assessment. On Page 21 of ISO/IEC Guide 71 and Page 22 of CEN/CENELEC Guide 6 … the supporting text for #8.23 has the different heading of ‘Fire Safety of Materials’ ?!? Confusing, isn’t it ?
The Revised Title in Table 7 and the supporting text should read … Fire Safety. ‘Fire Resistance’ is but one of many passive fire protection concepts … a very small sub-set in the wide technical field of ‘fire safety’ in buildings. ’Fire Resistance’ is not used in connection with the ignition and fire development behaviour of materials or fabrics.
Relevant Factors for #8.23 are not properly indicated, in Table 7, under Columns #9.2, #9.3, #9.4 (a glaring omission !) & #9.5.
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3. Pertinent to ‘fire safety’ in buildings … this text was removed from ISO CD (Committee Draft) 21542 … the previous version of the ISO Standard, dating from December 2008 …
ISO CD 21542 – Annex A.1.2 – 2nd Paragraph
‘ Building users should be skilled for evacuation to a place, or places, of safety remote from the building. In the case of people with a mental or cognitive impairment, there is a particular need to encourage, foster and regularly practice the adaptive thinking which will be necessary during a ‘real’ fire evacuation.’
The Definition for the Term Skill (#3.60) is still retained in the later ISO DIS 21542 version of the Standard …
‘ The ability of a person – resulting from training and regular practice – to carry out complex, well-organized patterns of behaviour efficiently and adaptively, in order to achieve some end or goal.’
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4. While there are eight references to ‘Cognitive Impairment’ in both Guides … nowhere is this term defined … or distinguished from ‘Mental Impairment’ …
Cognitive Impairment: A deficiency of neuropsychological function which can be related to injury or degeneration in specific area(s) of the brain.
Mental Impairment: A general term describing a slower than normal rate in a person’s cognitive developmental maturation, or where the cognitive processes themselves appear to be slower than normal – with an associated implication of reduced, overall mental potential.
A deeper understanding, at a technical level, of the many different types of health conditions and impairments (physical/mental/cognitive/psychological) … can only result in a better designed, more facilitating Human Environment.
One final important term … when considering Fire Safety in Buildings …
Panic Attack: A momentary period of intense fear or discomfort, accompanied by various symptoms which may include shortness of breath, dizziness, palpitations, trembling, sweating, nausea, and often a fear by a person that he/she is going mad.
I have long held the view that, in Fire Engineering, dramatic breakthroughs will result from a closer study of Cognitive Psychology.
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Sustainable Development – International Law & Personal Ethics
At the level of the Individual … ‘sustainability’ urgently requires a revolution in professional and personal ethics.
However, at levels above or beyond the Individual … reference must be made to a common understanding of Sustainable Human & Social Development which has a foundation in a robust Framework of International Law. It is this approach which continues to facilitate, at Sustainable Design International, our development of the theory of ‘sustainability’ … and its more effective application to frontline design practice.
Sustainable Human and Social Development: Development which meets the responsible needs, i.e. the Human and Social Rights1, of this generation – without stealing the life and living resources from future generations, especially our children … their children … and the next five generations of children.
[1] As defined, in International Law, by the 1948 Universal Declaration of Human Rights (UN OHCHR).
Inspired by the Culture of the North American Indigenous Peoples … this definition also incorporates the concept of ’7 Generation Thinking’.
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Sustainable Design2: The ethical design response, in built or wrought form, to the concept of Sustainable Human and Social Development.
[2] Includes Spatial Planning, Architectural/Engineering/Interior/Industrial Design and e-Design, etc.
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Sustainable Design Solutions must be appropriate to local geography, climate and future climate change, economy, culture, social need and language(s)/dialect(s), etc.
Our Ultimate Goal, however, must be to achieve a dynamic and harmonious balance between a Sustainable Human Environment (including the social, built, virtual and economic environments …) and a flourishing, not just a surviving, Natural Environment … with the Overall Aim of achieving Social Wellbeing for All.
Please see previous Posts on this Technical Blog … www.cjwalsh.ie … for supporting definitions to the above text.
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2009 Camberwell Fire – Today’s Fire Engineering Challenges
In Ireland, it is rarely the case that there is an opportunity to practice Rational, Evidence-Based Fire Engineering … and to apply its Principles in a manner which is both professional and project-specific. The grim reality of everyday fire consultancy revolves around playing ‘cat and mouse’ with current national building and fire regulations/codes … with ‘cost effectiveness’, i.e. to achieve a defined objective at the lowest cost, or to achieve the greatest benefit at a given cost … being the real, hidden driver behind such dangerous games ! Who wants to hear that the Irish Fire Safety Certification System is little more than a charade … an elaborate, resource consuming paper exercise … made all the more meaningless because Part B: ‘Fire Safety’ (of the Second Schedule to the 1997 Building Regulations, as amended) is isolated from a necessary and vital consideration of the other Parts, particularly Parts A: ‘Structure’; D: ‘Materials & Workmanship’; K: ‘Stairways, Ladders, Ramps & Guards’; and M: ‘Access for People with Disabilities’ ?
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Colour photograph showing an external view of Lakanal House, Sceaux Estate, Camberwell, London (GB) ... after the Fatal Fire which occurred at 16.19 hrs, on 3rd July 2009. The fire was caused by a faulty television set, and resulted in the loss of 6 lives, with 15 residents and 1 firefighter left injured. London Fire Brigade was required to assist the evacuation of a further 40 building occupants to safety. Along with the serious loss of life, and the large number of injured people ... over 90 families had to vacate their flats.
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Discussing the Principles of Fire Engineering … and elaborating on the significant differences between the limited Fire Safety Objectives of legal regulations/codes … and the much broader range of Fire Engineering Design Objectives intended to fully protect social wellbeing and the interests of clients/client organizations, i.e. to properly protect their asses and their assets, in the event of a fire … is a constant, tortuous, but rewarding, struggle. Masochism does help !
However, the 2009 Fire in a High-Rise Flat Complex at Camberwell, London (GB) … from just looking at the photograph above and reading available information about the spread of fire internally … raises some challenging fire engineering issues for building designers, property managers and construction organizations.
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1. Reliability of People Strategies in a Fire Emergency ?
In spite of the People Strategies elaborated in current Fire Codes/Regulations/Standards … it is totally and utterly irresponsible to advise people to wait in their own flats/apartments during a fire incident, or to develop fire safety strategies based on this approach … unless the confidence level (of ‘Competent Persons’ in Control … managers, designers and builders … of the flat/apartment complex) with regard to the following aspects of construction is very high …
- reliability of both passive and active fire protection measures ;
- reliability of fire compartmentation (see below) ;
- reliability of not just the building’s structural stability, but also its serviceability, during the fire and for a minimum period of time afterwards, i.e. the ‘cooling’ phase.
Competent Person: A person capable of making sound value judgements in the area of professional endeavour in which he/she possesses profound knowledge, understanding and practical experience.
Fire Codes/Regulations/Standards, wherever or whatever their origin, are NOT Infallible … and it is unbelievably mind-boggling, and sad, to witness a blind and unquestioning faith in such documents !
Looking beyond the headline figure of 6 Fatalities in the 2009 Camberwell Fire … adequate attention should also be focused on the 16 Injured … comprising building occupants and firefighters … the lengthy disruption of community wellbeing resulting from the fire … 90 Families had to be re-located … and, of course, the tremendous amount of direct and indirect damage to property and the environment. And, I wonder … how did the more vulnerable occupants … and there may also have been visitors present in the complex at the time … cope in this emergency situation ?
This is why Fire Safety, Protection and Evacuation for All must be a Priority on any ‘Sustainability’ Agenda.
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2. Independent Technical Control of AHJ Construction ?
I have said this before, but it is worth repeating here again … Self-Regulation Is No Regulation ! Surely this lesson has been burnt into our souls, following the recent scandals, financial and otherwise, in Ireland ? National and Local Authorities Having Jurisdiction (AHJ’s) … Government Departments & Agencies, Semi-State Organizations, a myriad of Qwangos, the Office of Public Works and Local Authorities are complacent, careless and stubborn concerning proper compliance with even the minimal performance requirements specified in fire regulations, codes and standards.
The 2005 & 2008 National Institute of Standards & Technology (USA) Reports on the 9-11 WTC Incident in New York presented us with some stark language … and a set of important Recommendations which must be heeded …
‘ NIST recommends that such entities be encouraged to provide a level of safety that equals or exceeds the level of safety that would be provided by strict compliance with the code requirements of an appropriate governmental jurisdiction.
To gain broad public confidence … NIST further recommends that as-designed and as-built safety be certified by a qualified third party, independent of the building owner(s). The process should not use self-approval for code enforcement in areas including interpretation of code provisions, design approval, product acceptance, certification of the final construction, and post-occupancy inspections over the life of the buildings.’
[2005 NIST Final Report on WTC 1 & 2 Collapses - Recommendation No. 25]
Later posts, here, will examine the individual NIST Recommendations in more detail.
However … many individuals and organizations, with vested interests, are still trying to discredit and/or ignore the Recommendations contained in the 2005 & 2008 NIST Reports on the WTC 9-11 Incident. British Standard BS 9999:2008 is a typical case in point … a document which is slowly seeping into the marrow of the Irish Fire Establishment. The complete and abject failure to consider any of the NIST Recommendations during the long development of this British Standard, or even to reference the Reports in the Standard’s Bibliography … was an inexcusable and unforgivable technical oversight. The result was … and remains … a sloppy, crassly inadequate, deeply flawed and discriminatory national fire safety standard. The British Public deserves far better !
At this stage … reluctantly … I must invite the Chair of British Standards Institution Committee FSH/14, Mr. David B. Smith, to seriously re-consider his position.
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3. Fire Resistance, Compartmentation & Fire-Induced Progressive Collapse ?
Every person participating in the design, construction, management or operation of a building, no matter how simple or complex, must have a working knowledge and proper understanding of the Fire Engineering Principle of Fire Compartmentation:
The division of a building into fire-tight compartments, by fire and smoke resisting elements of construction, in order …
- to contain an outbreak of fire ;
- to prevent damage, within the building, to other adjoining compartments and/or spaces ;
- to protect a compartment interior from external fire attack, e.g. fire spread across the building’s facade or from an adjacent building ;
- to minimize adverse, or harmful, environmental impacts outside the building.
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BUT … But … but … buildings are no longer designed and constructed, today, as they were in the 18th or 19th Centuries …
In a fire situation, Fire-Induced Progressive Collapse may commence before any breach of ‘integrity’ occurs in the boundary of such a Fire Compartment, i.e. the building compartment of fire origin.
Fire-Induced Progressive Collapse: The sequential growth and intensification of distortion, displacement and failure of elements of construction in a building – during a fire and the ‘cooling phase’ afterwards – which, if unchecked, will result in disproportionate damage, and may lead to total building collapse.
… which is related to, but distinguishable from …
Disproportionate Damage: The failure of a building’s structural system … (i) remote from the scene of an isolated overloading action ; and (ii) to an extent which is not in reasonable proportion to that action.
Structural Fire Engineering: Those aspects of fire engineering concerned with structural design for fire, and the complex architectural interaction between a building’s structure and fabric, i.e. non-structure, under conditions of fire and its aftermath.
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AND … And … and … a designer of a Sustainable Building will want to utilize … in order to conserve energy … natural patterns of air movement for heating or cooling. This means that it will be necessary to have gaps between elements of construction which are continuously open … in direct conflict with the Principle of Fire Engineering just quoted above !
What happens when this sort of conflict … or lack of resolution (!) … occurs in modern, highly energy-efficient construction projects ? At the final stages of approval/certification … the Fire Prevention Officer will insist on following the outdated prescriptive approach in his/her rulebook. In other words, he/she will illegally apply the guidance text of Technical Guidance Document B as if it were prescriptive regulation. Fire Compartmentation will be uncompromisingly slapped onto ‘unresolved’ areas of a completed building design … to achieve the limited Fire Safety Objectives of Building Regulations … and the fire safety related construction will probably be badly executed, anyway, because the un-supervised sub-contractors of sub-contractors of sub-contractors couldn’t care less if it goes one way or the other ! The outcome is … nobody wins !!!
In Sustainable Building Design, therefore, Fire Resistance (a ‘passive’ protection concept) must not only be extended to consider a complementary relationship with ‘active’ fire protection concepts, but be stretched … ‘intelligently’ … to embrace the concept of ‘non-construction’ …
Building Sterile Space (Fire): An open space of sufficient and appropriate extent which is designed to retain an exceptionally low level of fire hazard and risk, and is ‘intelligently’ fitted with a suitable fire suppression system – in order to resist and control, for a specified time during a fire, the advance of heat, smoke and flame.
Fire Resistance: The inherent capability of a building assembly, or an element of construction, to resist the passage of heat, smoke and flame for a specified time during a fire.
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2010 ACRECONF in Delhi (Dilli), India – 8th & 9th January
It was a great pleasure to be invited to speak on the subject of Sustainable Fire Engineering at the 2010 ACRECONF in Delhi (Dilli), India. This ground breaking conference in Asia took place at the India Habitat Centre, Lodhi Road, Delhi … on the 8th & 9th January last. Back during August (2009) in Bengaluru … the ACRECONF Chairman, Mr. Ashish Rakheja, told me that he expected an attendance of somewhere between 500-600 people at the Delhi Conference. Over the two days of the actual conference, approximately 1800 delegates participated … an enormous response by architects, civil and service engineers, developers, client and construction organizations, etc., etc., from right across the country … and from the deep south.
Colour photograph showing some of the many participants at the 2010 ACRECONF in Delhi, as they enjoy talking and networking during the morning coffee break of the second day at the conference. The venue was the India Habitat Centre on Lodhi Road. The weather was chilly for the time of year, and there had been a heavy fog earlier in the morning. Click to enlarge. Photograph taken by CJ Walsh. 2010-01-09.
For me … refreshing, extremely impressive, and certainly the highlight of the conference … was a multi-media presentation … on the second morning, just after the coffee break … by Mr. Karan Grover, the renowned Indian Architect. He is quite an individual !
Before the break, delegates had been treated to an elaboration of the Environmental Design Innovations incorporated into the 71 storey Pearl River Tower (Guangzhou, China), by Mr. Varun Kohli of Skidmore, Owings & Merrill (SOM) in New York. Construction of the Tower is now well under way. Afterwards, however, an important discussion took place concerning the issue of fire safety, and fire engineering generally, in Sustainable Buildings. It became clear to all of the participants that this issue is a major oversight … an intentional gap … in the design of these buildings. I made the point, forcibly, that Sustainable Fire Engineering is open to innovation and design creativity. There will be an important follow-up to this discussion.
Colour photograph showing a silly tourist on a bicycle rickshaw, as he is brought sightseeing around the Bazaar District in Old Delhi. Click to enlarge. Photograph taken by Mr. Daljeet Singh, Ministry of Tourism, with CJ Walsh's camera. 2010-01-09.
Unfortunately, the conference was peppered with references to ‘Green’ Buildings … an outdated marketing concept (!) … which, within its limited world-view, gives people the false comfort of not having to deal with thorny issues such as ‘social justice, solidarity & inclusion for all’. I have discussed this issue many times in previous posts.
Even more unfortunately, where the Brundtland Definition of ‘Sustainable Development’ was actually presented in one session … as usual, it was only the first half of the definition which made any appearance. The second, and more important, half of the definition had mysteriously vanished without trace … which made the whole effort a meaningless exercise ! What a waste !! No wonder there is such confusion over the concept … at all levels … in most countries !!!
It was not surprising, therefore, that what was not stressed enough, during the entire conference, was that Sustainable Design Solutions must be appropriate to local geography, climate, economy, culture, social need and language(s)/dialect(s), etc. The LEED Building Rating System (USA), for example, is not being properly adapted to local conditions in India !
A final issue … another major oversight … another intentional gap … in the design of buildings … Accessibility-for-All ! Even though India ratified the 2006 UN Convention on the Rights of Persons with Disabilities on 1st October 2007 … this essential aspect of design … certainly in Sustainable Buildings … received no mention whatever during the conference … except by yours truly, in my presentation.
Overall … a magnificent achievement for the organizers !
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Yesterday’s Burj Dubai Inauguration – The Tallest ?? How ?
Yesterday (2010-01-04), the Burj Dubai … recently renamed the Burj Khalifa, in honour of Abu Dhabi’s Ruler … was inaugurated. Dubayy, as it is known locally, is situated in the United Arab Emirates (UAE). Contrary to most reports, this building has a height of approximately 550 metres !
Colour photograph of the Burj Khalifa Tower in Dubayy, United Arab Emirates ... which was recently inaugurated on 4th January 2010. A romantic image, for now, of the World's Tallest Building. But ... how 'sustainable' ... and 'fire safe' ... is this building ? Click to enlarge.
Every single metre counts in the race of the ‘tallest’ ! So, the timing of the following CTBUH(USA) Press Announcement, back in November 2009, was most fortunate. In my opinion, the most meaningful height criterion is … Height to Occupied Floor. But, what do you think ? See below.
However … purposefully tripping you up as you race to read all about the height criteria of Tall and Super-Tall Buildings … we should all know and understand, I hope, that comparing the ‘size’ of structural members is a silly schoolboy’s game. So, I would like to pose Some Important Questions (discussed, ad nauseam, in previous posts) about the Burj Khalifa Tower …
- Dubayy (Dubai) is a crude reproduction of the nightmare that is the 20th Century North American City, i.e. it is on the opposite end of the scale from being ‘sustainable’ ! ’Greenwashing’ aside … How Sustainable is the Burj Khalifa Tower ?
- There is no effective system, in Dubayy, of Independent Monitoring and Technical Control of the processes of building design and construction by Local Authorities Having Jurisdiction (AHJ’s) or Competent Technical Controllers …
How Fire Safe is the Burj Khalifa Tower … for All of the large population, including People with Activity Limitations (2001 WHO ICF), who will undoubtedly be using/occupying the building during its long life cycle ?
Has the Tower been designed to adequately resist Fire-Induced Progressive Collapse ? ’Robustness’ and ‘Disproportionate Damage’ are separate, but related, structural concepts.
During my next visit to Dubayy … I will enjoy looking at, and photographing, the completed building. But, I will not be entering the Burj Khalifa Tower !
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Chicago, 2009-11-17: The Council on Tall Buildings & Urban Habitat (CTBUH) – the international body which arbitrates on tall building height and determines the title of ‘The World’s Tallest Building’ – has announced a change to its height criteria, as a reflection of recent developments with several super-tall buildings.
The new criteria wording – ‘Height is measured from the level of the lowest, significant, open air, pedestrian entrance to …’ allows for the recognition of the increasing numbers of multi-use tall buildings with often several different entrances at different levels, whilst also accommodating buildings constructed in non-traditional urban or suburban locations. The CTBUH Height Committee has determined that the previous description of where to measure tall building height from – ‘Height is measured from the sidewalk outside the main entrance to …’ is now no longer sufficient.
This will have an impact on both the height of tall buildings and their relative international height rankings. Burj Dubai, set to open as the world’s tallest building in January 2010, will now be measured from the lowest of its three main entrances (which opens into the entrance lobby for the tower’s corporate suite office function), while the recently completed Trump International Hotel & Towers in Chicago will be measured from the lower, publicly accessible Chicago Riverwalk. In the case of Trump, this additional 9 metres (approx.) means that it will surpass the Jin Mao Tower in Shanghai to occupy the rank of 6th tallest on the current list of completed buildings.
“Beginning in 2007, with the knowledge that Burj Dubai would be significantly taller than any structure ever built, the CTBUH Height Committee met to review the criteria by which we recognize and rank the height of buildings”, said Peter Weismantle, Chair of the CTBUH Height Committee and Director of Supertall Building Technology at Adrian Smith + Gordon Gill Architecture in Chicago. “As one might guess, with the committee being made up of architects, engineers, contractors, developers, building owners and academics, a variety of opinions and views were expressed. The resulting revisions, almost two years later, reflect a general consensus of the committee in recognizing the most recent trends in tall building development around the world.”
Also in response to the changing designs and forms of tall buildings, the Height Committee has elected to discard its previous ‘Height to Roof’ Category. “The roof category just doesn’t make sense anymore”, said CTBUH Executive Director Antony Wood. “In the era of the flat-topped modernist tower, a clearly defined roof could usually be identified, but in today’s tall building world – which is increasingly adopting elaborate forms, spires, parapets and other features at the top of the building – it is becoming difficult to determine a ‘roof’ at all, even less so to measure to it.”
Colour image showing the World's 10 Tallest Buildings ... ranked by the Council on Tall Buildings & Urban Habitat (CTBUH), in November 2009, according to the criterion 'Height to Highest Occupied Floor'. Also included is the Burj Khalifa Tower, which was inaugurated on 4th January 2010. Click to enlarge.
The Revised CTBUH Height Criteria and Diagrams of the Tallest 10 Buildings in the World as of November 2009 can be found here, ranked according to the three height categories now recognized by CTBUH. These are: (i) Height to Architectural Top, measured to the topmost architectural feature of the building including spires, but not including antennae, signage, flag poles or other functional-technical equipment; (ii) Height to Highest Occupied Floor, measured to the level of the highest, consistently occupied floor in the building (thus not including service or mechanical areas which experience occasional maintenance access); and (iii) Height to Tip, measured to the highest point of the building, irrespective of material or function of the highest element.
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Building Fire Emergencies – What is a ‘Place of Safety’ ?
As I have travelled around … not just Ireland, but many other countries as well … it still remains a puzzle to me, today, why so many Fire Emergency Assembly Areas are located just outside the main entrance of a building. These locations are not safe in a ‘real’ fire emergency … and they should not even be used for the purposes of test/drill evacuations !
Is the guidance contained in current Building & Fire Regulations, Codes and Standards on what is a ‘Place of Safety’ in a fire emergency clear, simple, direct and precise ? Are you joking ? No way ! Let us take a few examples close to home …
In Ireland:
When you look at the array of different Technical Guidance Documents (Building Regulations) at the same time … TGD B (Fire Safety) is way out of proportion, in size, compared to all of the others. You would expect, therefore, to find exactly what you were looking for in that document. Wouldn’t you ?
TGD B (2006), Paragraph #1.0.9 – Definitions
Place of Safety
A place, normally in the open air at ground level, in which persons are in no danger from fire.
Clear as mud ! If there is a fire on O’Connell Street in Dublin … a person is safe on Patrick Street in Cork ! But, how is any Building or Facilities Manager expected to work with such a vague definition ?
In England & Wales:
No practical definition, as such, is readily provided. The nearest thing to a definition is an amalgam of the following …
Building Regulations, Requirement B1 – Means of Warning & Escape
The building shall be designed and constructed so that there are appropriate provisions for the early warning of fire, and appropriate means of escape in case of fire from the building to a place of safety outside the building capable of being safely and effectively used at all material times.
Approved Document B: Volume 1 – Dwellinghouses & Volume 2 – Buildings Other Than Dwellinghouses
The ultimate place of safety is the open air clear of the effects of the fire.
British Standard BS 9999 : Code of Practice for Fire Safety in the Design, Management & Use of Buildings : 2008
Place of Ultimate Safety
Place in which there is no immediate or future danger from fire or from the effects of a fire.
Again … all as clear as mud ! Again … how is any Building or Facilities Manager expected to work with such vague guidance ? Have you also noticed the additional obfuscation introduced by use of the word ‘ultimate’ in BS 9999 ?
It is hard to escape the conclusion that what is urgently needed is a fundamental transformation and re-shaping of the tired, antiquated and flawed ad-hoc assembly of prescriptive ‘solutions’ contained in current national building and fire regulations, codes, standards and administrative provisions … whatever their origin !
Now … try this for clarity, simplicity, directness and precision …
Place of Safety (Fire Incident in a Building, No Explosion Hazard*)
Any location beyond a perimeter which is [100]* metres from the fire building or a distance of [10]* times the height of such building, whichever is the greater
and
where necessary and effective medical care and attention can be provided, or organized, within one hour of injury
and
where people can be identified.
* Where there is a Risk of Explosion … multiply the numbers in square brackets above by 4.
Was that good for you ?
Furthermore …
The Route to any Place of Safety must be Accessible for All Building Users, including people who use wheelchairs, the visually impaired, frail older people, women in the later stages of pregnancy, children, etc., etc.
Colour photograph showing a Typical Scene at a Building Fire Emergency, with Fire Service Vehicles and Personnel in operation mode. The haphazard arrangement of firefighting water hoses on the ground makes access difficult for many Building Users to a 'Place of Safety' which is remote from the Fire Building.
With regard to an Adequate, never mind a Proper, Awareness of Disability-Related Issues at a Fire Scene … it is shocking to realize how almost non-existent this is among Fire Services … not just in Ireland and Britain … but in the rest of Europe and North America as well.
Even a hint of criticism will usually … not always … meet the Neanderthal Fire Service Response: “Have you ever been in a ‘real’ building fire ?”
My Response is: “Do you have to be a hen to know when an egg is bad ?”
This discussion will continue later … have no doubt … that is a promise !
END
9-11 World Trade Center Incident – Institutional Inertia ?
Yesterday afternoon, following the post upload of Concrete Testing Fraud in New York – 1 World Trade Center … I received an e-mail message from a close member of our extended family in New York State, USA:
” Another year goes by …
I’m sending this on to people who are an important part of my life – either then or now. Some of you are friends since 9/11/01 and may or may not know that Barry and I (Mary-Ellen) worked at the Trade Centers – others of you supported us through this difficult time. It was a single, cataclysmic event that changed our lives, and the lives of our colleagues and many others, forever. These images are poignant.
It’s worth remembering.”
These are the Images which Mary-Ellen sent …
‘WTC 9-11 Incident – Declassified Photographs (June 2009)’
Click above to download PowerPoint Presentation 4.46MB
The Recommendations contained in the 2005 & 2008 National Institute of Standards & Technology (USA) Reports on the 9-11 WTC Building Collapses (WTC 1, 2 & 7) provide an essential and invaluable empirical basis for the competent, ethical and professional practice of Effective Fire Engineering Design in today’s complex Built Environment.
8 Long Years After 9-11 … A Pattern Confirmed in Mumbai (November 2008) …
Why are so many Key Institutions & Organizations in the International Building Sector still desperately trying to ignore and/or deny the Recommendations in those 2 NIST Reports ?
Why have National Building & Fire Codes/Regulations & Standards not yet been revised to respond, properly and satisfactorily, to the NIST Recommendations ?
Why can we not yet use All Lifts (Elevators) in a Building during a fire incident ? Why are Lift (Elevator) Manufacturers still actively resisting this necessary change ?
I could go on … and on …
END
Concrete Testing Fraud in New York – 1 World Trade Center
Background & Verification
Early 2008 … a New York Inquiry into the Concrete Testing Industry begins. At issue is the Structural Reliability of Current Major Public Works Projects in the City, including many Tall Buildings.
Internet Search: ‘New York Concrete Testing Inquiry’ … to discover the full measure of fraud and corruption.
I wonder how the U.S. Model Building & Fire Code Organizations … including the U.S. International Code Council … are responding to this growing scandal in New York. Are they responding at all ? AND … do they discuss this sort of issue openly, as they heavily ‘promote’ the adoption of U.S. Codes in Developing Countries around the world ?
What is the position of the Council on Tall Buildings & Urban Habitat (CTBUH) ???
2009-09-08 … by Niki May Young, News Editor, World Architecture News(.com) …
Robert LiMandri, New York’s Buildings Commissioner, has announced that concrete tests are to be carried out on 82 New York buildings following safety concerns arising from the indictment of Testwell Laboratories in January and a further firm in July. Testwell were accused of falsifying concrete mix design reports for the high profile Freedom Tower project (now 1 World Trade Center), Yankees Stadium, Jet Blue Terminal and a number of other projects and had their license suspended. Stallone Testing Laboratories were also indicted for falsifying concrete mix design reports in July.
The indictment of Testwell led to a lack of confidence in the safety of over 100 buildings in New York. Following investigations, 82 buildings are to be re-examined. The investigations come as part of an announcement by LiMandri of a new comprehensive program to increase the oversight and evaluation of concrete testing at construction projects throughout the City, including projects funded by the City and private developers. The program includes plans to build a city-owned and operated concrete-testing laboratory and the creation of a new Concrete Unit at the Department Of Buildings (DOB).
The new City laboratory, which will be operated by the Department of Design & Construction (DDC) and is expected to open as early as January, will offer testing services to all City agencies responsible for construction projects. New York City has 35 private concrete-testing firms currently licensed to do business in the City and the new facility will also make it possible to audit these firms.
“Concrete testing is a critical component of concrete operations, and the results should affirm the strength and quality of materials used for a building under construction,” said LiMandri. “However, the integrity of concrete-testing practices has come into serious question, and this new laboratory, as well as a new Concrete Unit and re-testing protocol, are three significant measures to ensure concrete testing procedures are lawful and the concrete used meets a project’s specific design requirements.”
DOB denied Testwell’s application to renew its concrete-testing license but a State Supreme Court Judge rejected DOB’s denial of the license renewal. DOB is now appealing that decision. Last Friday, DOB revoked Stallone’s concrete-testing license, prohibiting them from testing concrete in the City. The Department Of Buildings is currently working with property owners named in the Stallone indictment to determine whether a project’s final test results meet the structural design requirements. If they do not, the affected property owners will also be required to follow the re-testing protocol.
“New Yorkers must be confident the City’s buildings have been built to exacting standards and that the concrete, not usually visible, was mixed to proper construction specifications,” added Design and Construction Commissioner Burney.
END
‘Sustainable Fire Engineering’ – Important Keynote Presentation at Indian National Fire Seminar
It is really enjoyable to be back behind my desk, here in Dublin. Apologies for the prolonged absence.
Since the middle of June last, my travels have taken me to Turkey, France, Italy, the south-west of Ireland to attend my cousin’s wedding in Cork … and back again to Bengaluru (Bangalore) in Southern India to make an important Keynote Presentation at the 2009 Fire & Safety Association of India (FSAI) National Fire Seminar: ‘Engineering a Safe & Secure India’, which was held on Friday, 28th August, at the Leela Palace Hotel.
My Presentation Title & Abstract …
Sustainable Fire Engineering: Fire Safety, Protection & Evacuation for All
India, like other economically advanced developing countries, is at an important crossroads. Difficult, resource-dependent decisions must be made in the next few short years concerning the rapid implementation of a Sustainable Built Environment across a vast country, i.e. one which must serve local needs and meet regional performance requirements during a long life cycle … one which will be adaptable to climate change, variability and extremes … will be in harmony and dynamic balance with the Natural Environment … and, not least, will be super energy-efficient.
Citizens of Developed Nations also have legitimate expectations. They will express anger when they witness recently constructed buildings in seismic zones collapse, in an earthquake, like a deck of cards (China 2008, Italy 2009) … or they discover that federal/state authorities having jurisdiction, which are funded by their taxes, are ill-prepared to respond effectively to intentional traumatic disruptions to the Social Environment (New York 2001, Mumbai 2008). Retaining the public’s confidence in national institutions is a fundamental political priority.
In the case of all new High-Rise Buildings, Iconic Buildings, and Buildings of Innovative Design or having a Critical Function … Trans-Disciplinary Building Design Teams must, at a minimum, properly respond to the Recommendations of the 2005 & 2008 NIST(USA) Final Reports on the 9-11 WTC 1, 2, and 7 Collapses. In practice, the majority of these Recommendations should be applied to the design of all new buildings !
Fire Engineers, competent concerning the processes of ‘real’ building design and construction, must begin to understand the ‘real’ people who occupy or use buildings, every day of every week, in all parts of India … and that they each have widely differing ranges of human abilities and activity limitations. Just as they are different from each other, they will react differently than expected in a ‘real’ building fire emergency.
Based on a Keynote Presentation before International Council for Building Research (CIB) Working Commission 14 : Fire and Sub-Committee 3 & 4 Members of ISO Technical Committee 92 : Fire Safety, at Lund University in Sweden … and his fire safety texts which have been fully incorporated into International Standard ISO DIS 21542 on Accessibility-for-All, currently under development and due for publication before the end of 2010 … CJ Walsh’s Presentation, at the FSAI National Fire Seminar in Bengaluru, will focus on ‘Fire Safety, Protection & Evacuation for All’.
END
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