SlideShare a Scribd company logo
1 of 47
S A M P L E   H E A D E R




   DDA IN THE EXTERNAL
      ENVIRONMENT
D S A M I P L E HHE E A D E R R N A L
  D A      N T        E X T E             E N V I R O N M E N T


Disability Discrimination Act 2005 (DDA) & Equality Act 2010

   In light of this legislation, the design of street furniture elements for people
   with visual or mobility impairment needs to be carefully considered to ensure
   it is ‘fit for purpose’.

   The DDA makes it unlawful for a provider of services (a Local Authority for
   instance) to discriminate against a disabled person by making it unreasonably
   difficult for the disabled person to use that service.

   Although this responsibility may ultimately lie with the client or their agents (ie
   specifiers), it is still our duty as a supplier to take ‘reasonable’ steps and
   modify products to make them suitable for all to use.

   In addition to the DDA, there are many guidelines produced by various
   bodies that have no legal status; however, there is plenty of information
   available on established best practice that can be applied to our products
   (see Further Reading at the end of the presentation for more information).
D S S A B I LL E T H E IA SDSEURE S
  I A M P       I   Y


   The term ‘disability’ covers people with physical, sensory or mental
   impairment.

   A conservative estimate is that approx 10-15% of the population have some
   degree of impairment and many face barriers to movement in the external
   environment.

   Also consider those not conventionally considered disabled but who
   encounter daily mobility problems eg people with small children, those
   carrying heavy shopping or luggage, people with temporary accidental
   injuries and older people.

   While there are aspects of design in the pedestrian environment that are
   helpful to all or most disabled people (and many able bodied too), there are
   certain specific facilities needed by people with a particular kind of
   impairment.

   No category is mutually exclusive. Many disabled people have more than
   one impairment and although it is not possible to consider the needs of every
   individual using the public realm, it should be recognised that a solution for
   one group of users may not assist another: rarely does one solution suit all.
C S A M P LNE PHREO B LEERM S
  O M M O          A D          E N C O U N T E R E D


Locomotion

   Includes people using
  wheelchairs and those
  who walk with difficulty
  and often use an aid
  such as a stick or
  walking frame

  Up to 70% of disabled
  people have
  locomotion difficulties:
  those with walking
  difficulties outnumber
  wheelchair users by
  about 10:1
C S A M P LNE PHREO B LEERM S
  O M M O          A D          E N C O U N T E R E D


Sight

  Can be sub-divided into
  blind and partially sighted
  people

  Only around 5 per cent of
  visually impaired people
  have no sight at all: the
  vast majority have some
  residual vision, and can
  distinguish colours, or
  shades of light and dark

  It is estimated that there
  are almost 2,000,000 in
  Great Britain with a
  significant sight loss
C S A M P LNE PHREO B LEERM S
  O M M O          A D          E N C O U N T E R E D


Hearing

  Can also be sub-
  divided into those who
  are profoundly deaf and
  those with impaired
  hearing

  The RNID estimates
  there are over
  8,000,000 deaf or hard
  of hearing people in the
  UK
C S A M P LNE PHREO B LEERM S
  O M M O          A D              E N C O U N T E R E D


Reaching, stretching &
  dexterity

  Often as a result of advanced
  age and/or arthritis, which can
  make movements painful and
  difficult, muscular dystrophy
  (causing a loss of muscular
  strength), or complaints of the
  nervous system

  Difficulty sitting down or
  standing up needs to be
  considered when providing
  seating for people with
  mobility problems
C S A M P LNE PHREO B LEERM S
  O M M O          A D            E N C O U N T E R E D


Learning disabilities

   Making it hard to understand
   complicated information on
   signage or to use complex
   machines (some ticket
   machines)
S T R E E T     F U R N I T U R E         G E N E R A L L Y


  A desirable urban realm is
  accessible, safe, legible, and inclusive

  A coordinated and consistent
  design, supported by the logical
  installation of street furniture, will allow
  users to be unhindered by
  inappropriately located obstacles

  Badly sited furniture is an obstruction
  to people with both mobility and visual
  impairments

  Ideally, items of street furniture should
  be grouped together where possible
  (at the back of the footway, out of the
  main pedestrian flow) so that visually
  impaired people can more easily
  identify, and avoid, the potential
  hazard
S S A M E T E F U R N I TE UR R E
  T R E P L     H E A D                 P L A C E M E N T


  Items should be mounted on walls or buildings whenever
  possible; if not, placing them at the back of the footway,
  as near the property line as possible, is acceptable (max
  distance from the property line to the edge of a pole
  should be 275mm)
     However, this is sometimes not ideal as the building
     line can provide the best route for visually impaired
     people who use canes using building facades as a
     guide

  If items are placed adjacent to a road, they should be a
  min 450mm away from the edge of the carriageway,
  increased to 600mm where there is a severe camber or
  crossfall

  BS5489 provides safe distance from kerb edge to light
  column centre – these may be as much as 1500mm

  A clear area of footpath, a minimum 1200mm wide,
  should be allowed for access, since visually impaired
  people who receive mobility training are trained to walk in
S S A M E T E F U R N I TE UR R E
  T R E P L     H E A D                 D E T A I L S


   Free-standing items, such as individual
   bollards, are a particular problem for visually
   impaired people and it is essential (while
   taking account of heritage issues) to consider
   the means of making them apparent to
   people with reduced vision

   Street furniture should be detectable at
   ground level with a long cane; for example,
   the addition of tapping rails to cycle stands
   should be considered at either end of a run

   If there is a need for more than one pole to
   support any item eg signage, they should be
   set at least 1m apart

   All street furniture should be at least 1000
   millimetres high as anything lower (eg
   benches without backrests and low bollards)
   are not in most adults’ normal line of sight
C S A MT E R
  L U T P L E      R E D U C R I O N
                   H   A D E T


   To reduce street clutter and hence the
   number of potential obstacles to the safe
   movement of visually impaired people, it
   may be desirable to coordinate certain
   elements of street furniture (traffic signals
   and signage, bins, banners etc with street
   lighting columns

ALTHOUGH…
   Projecting litterbins fixed to lighting columns
   and the glazed side walls of cantilevered
   bus shelters are examples of street furniture
   that may cause problems through being
   undetectable at ground level
C S A M P L E TH E A D EC O N T R A S T
  O L O U R /  O N A L  R


  If, for practical reasons, it is necessary to
  locate freestanding items of street
  furniture within (or close to) an access
  route, their presence should be clearly
  apparent, for example by ensuring that
  they contrast in colour and luminance
  with the background against which they
  will be seen

  Many guidelines advocate the use of
  colour / tonally contrasting marking to
  identify street furniture to those with
  residual sight, although such treatments
  may not be considered appropriate in
  historic areas

  While colour contrasted bands will help
  to some extent, the choice of colour for
  the overall post or bollard also affects
  visibility - grey poles in particular are
  often problematic as they tend to blend
  into a paved background
T O A M L LC O H E A D E R
  S N A P   E N T R A S T          -   M A T E R I A L S


  Contrast is the visual perception of the different light
  reflectance values of two surfaces and it is essential to
  ensure that colours selected for street furniture contrast with
  their surroundings

  Hues that appear to be quite different from one another in
  colour (chroma) can be very similar tonally (e.g. green and
  brown) and therefore do not give sufficient contrast –
  particularly to those with colour blindness

  It is generally recognised that 30 points of difference in light
  reflectance between surfaces should give adequate contrast
  for a large proportion of partially sighted people; however,
  the level of light shining on a surface has a large influence
  on the visual perception of contrast, and light levels
  outdoors obviously vary greatly so higher differences in light
  reflectance value would be preferable

  As a rule of thumb, for existing street furniture, a good
  contrast will show up clearly on a black and white
  photograph while poor contrast will show up simply as
  shades of grey
T O A M L LC O H E A D E R
  S N A P   E N T R A S T           D I M E N S I O N S


   A contrast band should be a minimum depth of 150mm, positioned with the lower edge
   of the band between 1400mm and 1600mm above ground level (essentially at eye
   level); some guidelines advocate deeper bands (300mm), or more than one band
   (three dark, two light bands each 100mm deep), but the single band, minimum
   150mm, is acceptable to the Royal National Institute for the Blind

   Specific items require different treatment:
       Bollards and low furniture should display a single band at approx 1m above
       ground level
       Items of furniture such as bus shelters and lighting columns should be highlighted
       with two bands, one at 900-1000 millimetres and the other at 1400-1600
       millimetres measured from ground level to the top of the band
       In the case of glazed screens, such as those found on bus shelters, two coloured
       bands should also be provided. The colour chosen for the highlighting on glazing
       should contrast with the background against which it will be viewed.

When installing new items of street furniture, tonal contrast should be a key element within
the design of materials and finishes. When integrated into the design process, a broader
range of aesthetically pleasing designs can be achieved and specifiers should not be
restricted to using 150mm banding since this is the minimum vertical dimension required.
Where appropriate, the banding could take the form of a logo or emblem for example, and
applied to a glass panel in a shelter.
SSAEM P L E GH E A D E R
     A T I N
S S A T IPNL G
  E   M       E   H E A D E R
                  G E N E R A L L Y


   Where people with a disability are able to walk at all, approximately 30% can manage
   no more than 50 metres without stopping or experiencing severe discomfort and a
   further 20% can only manage between 50 and 200 metres; therefore seats provided at
   50m intervals will help less mobile people use the streets more easily and encourage
   the use of public space

   In designing the layout of seating, space should be made available for wheelchair users
   to sit with their companions (or assistance dogs to sit nearby) and the provision of
   sufficient space to manoeuvre is an important factor to consider if disabled people are to
   use facilities independently

   Bench seats with open ends and sharp corners should be avoided

   Seat supports should not have visible base plates nor extend beyond the profile of the
   seat where they could create a trip hazard

   It is vital that rain water is not allowed to collect on any part of the seat and seats should
   be made of vandal resistant, easily cleanable material (timber is the preferred material
   where people may sit for longer periods of time)

   Sitting on a slight slope can be very uncomfortable for wheelchair users
S S A T IPNL G
  E   M       E   – E A S U A L
                   H V I D E R        C L A R I T Y


   In order for seating to be DDA
   compliant it should be highly visible,
   with a bold side profile, and in a
   colour and luminance that contrast
   with immediate surroundings and
   surfaces

   Alterations to the colour and/or finish
   of seating in certain locations may
   need to be made or the addition of
   contrasting banding or reflective
   strips might be required
S S A T IPNL G
  E   M       E   -H E A M E N S I O N S
                     D I D E R


   Seat surface heights are crucial to the
   comfort of individuals if seating is to be used
   for prolonged periods. If a seat is too high
   or too low a person may experience
   considerable discomfort as a result of poor
   posture

   Conventional seat heights vary over the
   range of 420-580mm, with a common height
   being between 450mm and 480mm
   (BS8300 recommends 450-475mm for fixed
   seating)

   Seat heights slightly greater than the normal     Extract from TfL’s Streetscape Guidance 2009

   450mm are more convenient for people with
   restricted mobility
S S A T IPNL G
  E   M       E   -H E A M E N S I O N S
                     D I D E R


   If space permits, it is helpful for people of restricted
   growth (and children) if there are some seats at a
   lower level than the standard height. Where
   possible, seats of varied height and width, ie higher
   and/or wider than standard seating, should also be
   provided for people of large stature or those with
   restricted leg movement

   Seat widths are recommended to be a minimum
   500mm; wider may need to be provided to allow for
   those of large stature

   Although conventional seating to these dimensions
   will meet the needs of most disabled people, there
   are some who find perch-type seating, against              Extract from TfL’s Streetscape Guidance 2009
   which people half lean and half sit, easier to use

   Perch seating (at bus stops and other locations
   where people wait for a short period of time) is
   recommended at a height of 580-800mm
S S A T IPNL G
  E   M       E   – E A D E R E S T S
                   H B A C K R


   Seats with backrests should be provided
   at regular intervals along well used
   pedestrian routes; approx 50% of
   seating should have backs

   For lower back support, a back height of
   approx 300-500 mm is
   recommended, depending on the length
   of time likely to be spent seated and the
   formality of the seat design

   Ideally, a minimum 75mm gap should be
   allowed between the top of the seat and
   base of the backrest

   For comfort, seat backs should be
   slanted back at approx 5-15o ; the seat
   angle will also need to be adjusted to
   maintain a seat to back angle of 90-100o
S S A T IPNL G
  E   M       E   – E A D E R S T S
                   H A R M R E


   A mixture of seating options, with or without
   arms, should be provided to assist in rising from
   the seat

   Seats placed in a row should either all have
   armrests or no armrests; a mixture within a single
   row can cause difficulties for visually impaired
   people

   To allow wheelchair users to transfer on to fixed
   seating, not all seats should have armrests, i.e.
   there should be no armrest on the end of a row
   of seats (the same principle applies for those
   with pushchairs)

   Armrests should be placed approx 200mm above
   seat level; width should be 40-70mm

   Armrests should have no sharp edges and the
   ends must be rounded if not connected to the
   seat; on longer seats, additional arms can be
B S A M A R D SH E A D E R
  O L L P L E


  Generally, the use of bollards should be avoided as
  they clutter the streetscape and can create an
  unnecessary hazard for people with mobility and
  visual impairments: improved legibility for both
  pedestrians and vehicle users through good design
  will minimise the need for bollards

  Bollards are recommended to be a minimum
  1000mm in height ; under no circumstances should
  adjacent bollards be linked with chain or rope as this
  is a hazard for blind and partially sighted people

  Bollards can be customised for DDA compliance
  through the addition of contrast colours or finishes
  and reflective banding to break up the bollard outline
  and increase visibility

  The incorporation of a light at the top of bollards is an
  effective way of making them more easily seen at
  night
C S A M E LS T A N D S E R
  Y C L P   E H E A D


  In order to assure DDA
  compliance, cycle stands can be
  customised through the addition of
  contrasting colours and/or reflective
  banding

  Cycle stands should be spaced a
  minimum 1000mm, and ideally
  1200mm, apart

  The addition of tapping bars to
  Sheffield type cycle stands can also
  aid the visually impaired so that an
  empty stand can be identified by
  someone using a cane; rails are
  often added only to the two end
  stands in a run for reasons of
  economy
L I TA TME PRL E I H E A D E R
  S            B N S


   Litter bins should be between
   1000mm and 1300mm in height

   Bins should continue down or
   close to ground level and be of
   a rounded design in a colour
   that contrasts with their
   surroundings

   The bin opening should be
   approx 1000mm above ground
   level
T S A M P G R I L LE EA SD E R
  R E E    L E H


   If feasible, grilles should be
   positioned outside the boundaries
   of pedestrian thoroughfares;
   gratings within an access route
   must be of a non-slip finish and set
   flush with the surrounding surface

   Slots in gratings should be a max
   13mm wide and set at right angles
   to the dominant line of travel

   The diameter of circular holes in
   gratings should be a max18mm
   (Heelsure drainage grates from
   Marshalls have slots of 6mm max
   for this reason); this
   recommendation is intended to
   reduce the risk of trapping the ends
   of canes and of wheelchair wheels
   becoming stuck
RSSAAM PPL LGES HH& EAADDEERU S T R A D E
  A I L I N E
      M           E B A L R
H S A M P L E L HT O D E R P S
  A N D R A I     E A S T E


  Any flight of steps that consists of two or more risers
  should be provided with a handrail on each side

  Where a stair is used simultaneously by a large
  number of people, and the overall unobstructed width
  of steps is greater than 1800 mm, an additional
  handrail, or handrails, should be provided to divide
  the flight into separate channels; no channel should
  have an unobstructed width of less than 1000 mm or
  more than 1800 mm

  The division of wide flights into separate channels will
  allow an individual who may have less strength on
  one side or the other to be within easy reach of
  support; An ambulant disabled person may be weaker
  on one side so a handrail on each side of the flight is
  essential for support

  If any stairway consists of two or more flights,
  separated by a landing or landings, each handrail
  should, if feasible, be continuous throughout the
  series of flights
L O A M T IL O N H O F DH EA RN D R A I L
  S C A P     E    E A


   The vertical height to the top of a
   handrail should be between 900mm and
   1000mm from the pitch line of a flight and
   between 900mm and 1100mm from the
   surface of a landing

   Second, lower handrails for children and
   people of restricted growth are helpful
   and should be fixed at heights of
   between 550mm and 650mm

   Each handrail should extend at least 300
   mm beyond the first and last nosing; this
   extension allows an individual to steady
   or to brace themselves before ascending
   or descending

   As much of the extension as possible
   should be horizontal and the extension
   should not intrude into any circulation
   route
H S A M P L E L H D E S I EGRN
  A N D R A I      E A D


   A handrail should be:
    a) an oval or circular profile (a non-circular handrail is
   as easy     to grip as a circular handrail and gives better
   support)
    b) finished to contrast in colour and luminance with its
    surroundings, without being highly reflective
    c) smooth and comfortable to grip (slip resistant) with
   no     sharp      edges, not cold to the touch (the use of
    Ferrocast, timber or certain coatings, such as
   powdered nylon, is recommended)

   For an individual with impaired vision, the change in
   slope of the handrail and its return into a wall will signal
   the start or finish of the flight

   At the start and finish, the handrail should be terminated
   in a way that will reduce the risk of clothing being
   caught: this is achieved by returning the handrail to the
   wall or floor, having a minimum rounded downturn of
   100mm, or by terminating it with a scroll or similar
   feature
H S A M P L E L H D I AMDEENRS I O N S
  A N D R A I      E


   A circular handrail should have a minimum
   diameter of 40mm but not greater than 50mm; an
   oval profile should be 50mm wide by 38mm deep

   The profile should have rounded edges with a
   radius of at least 15 mm

   There should be a clearance of 50-60mm between
   a handrail and any adjacent wall surface (subject
   to a maximum intrusion of 100mm into the ramp or
   stairway); minimum of 600mm clear space above
   the handrail is required

   Any handrail support should meet the handrail
   centrally, on its underside, so there is no
   obstruction to the passage of the hand along the
   rail; the clearance between the bottom of the rail
   and any cranked support, or continuous
   balustrade, should be a minimum 50mm to
   minimize the risk of the handrail supports
   interrupting the smooth running of a person’s hand
   along the rail
G S A M P L E IH E N G E R
  U A R D R A L I A D


  Railings are a hindrance to people with
  disabilities but if there is a steep slope
  or drop on a footway, precautions must
  be made to prevent wheelchair users
  running over the edge or blind/partially
  sighted people walking over it

  Guardrails and barriers adjacent to
  footways should be at least 1000mm
  high, preferably 1200mm, measured
  from ground level

  In common with other street furniture,
  guardrails should be clearly colour
  contrasted from their surroundings. If
  galvanised or black railing is used, in
  conservation areas it should at
  minimum have colour contrasted
  markings added to the end panels

  Grouping other furniture, such as
  litterbins, at the ends of railings will
  minimise the collision hazard at the
  ends of railings
G S A M P L E I H E D IDME ER N S I O N S
  U A R D R A L     A


   Guardrails should be designed to prevent guide dogs from walking under the rails, but
   there must be sufficient openings between vertical elements to ensure that children,
   people of limited stature and wheelchair users can see, and be seen, through the
   railings

   The top rail should have a smooth profile and, if intended to provide support, should be
   circular with a diameter of between 40mm and 50mm

   There should be an upstand, a minimum of 150-200mm in height, to act as a tapping rail
   for long cane users as well as a safeguard for wheelchair users

   Where it is necessary to provide staggered barriers across footways and footpaths in
   order to prevent conflict with other forms of traffic (for example at junctions with main
   roads) the barriers should be constructed of vertical bar sections 1200mm high and
   colour contrasted with their surroundings

   An offset between the two barriers of 1200mm allows wheelchair users convenient
   passage but discourages the riding of bicycles
SSI A M P L EE H E A D E R
    G N A G
W S A M P N D I N G AP R I R C I P L E S
  A Y F I L E H E     D E N


   Buildings designed with a logical layout will
   directly assist wayfinding; everyone needs
   information about the purpose and layout of
   spaces if they are to maintain a clear sense of
   direction and independent use of a building

   Colour can be used to signal the location of
   certain features within a building eg walls within
   core areas containing stairs, lifts or toilets
   could be painted a particular colour to aid
   orientation

   Visual information can be provided by
   distinguishing floors, walls and ceilings etc;
   where a building relies upon its own vocabulary
   of finishes to convey information to people with
   sight or learning impairments, a key should be
   provided at a central information point

   Tactile maps or models of the interior layout of
   buildings aid the comprehension of the building
   for those with sight impairments
S SG N A G E
  I A M P L E    G E N D R R L L Y
                 H   A E E A


  Signs should form part of an integrated communication
  scheme that gives clear directions, information and
  instructions for the use of an area; they should support
  a wayfinding strategy that considers the needs of
  different types of users as well as the complexity of the
  area’s layout

  Making a sign clear and easy to read for a visually
  impaired person it will make the sign clear and easy to
  read for most people; the orientation of maps and plans
  should match that of the building

  The effectiveness of information is determined by:
      the location, accessibility, layout and height of
      signs
      the size of lettering, symbols and their reading
      distances
      the use of tactile letters and symbols
      colour/luminance contrast and lighting, including
      the finished surfaces of materials used
      the simultaneous use of audible cues/integration
S SG N A G E
  I A M P L E     G E N D R R L L Y
                  H   A E E A              C O N T I N U E D


   The location of signs should be part of the process of
   planning a building or landscape

   Signs must be sited in logical positions where they do
   not cause obstruction and positioned at high level in
   areas that are likely to be crowded to ensure visibility

   Key information should be provided both visually and
   audibly, and in tactile form (embossed
   lettering, pictograms or Braille) where low enough to
   be touched (as no single medium can communicate
   information to all those who need it, some duplication
   will be necessary)

   Clear information is essential for people with
   impaired hearing who may be unable to ask, or feel
   uncomfortable about asking, for directions

   Symbols are an essential aid to supplement written
   instructions for people with learning difficulties:
   universally recognised pictograms should be used to
S SG N A G E
  I A M P L E     – EDAEDT E R L
                  H         A I      D E S I G N


   The principles of clear signage are:
       the use of colour to highlight the sign
       from its background and to highlight the
       text on the sign (to enable a sign to be
       located on both light and dark
       backgrounds, a border can be
       incorporated on the sign, rather than
       changing the colour of the sign board)
       the need for upper and lower case
       lettering rather than all capitals
       consideration of text heights suitable for
       different viewing distances
       materials should be of a matt finish,
       avoiding reflective glass
       position signs where they will be well lit
       but avoiding reflections from low level
       sunlight and artificial lighting
       provide simple, short and consistent
       information
       use prescribed typefaces, colour and
       graphic devices
S SG N A G E
  I A M P L E    – D IAM EE N S I O N S
                 H E    D    R


  Signage poles and cantilevered signs can present a barrier and a hazard to disabled
  people and the guidance provided earlier concerning the position of street furniture,
  minimum footway widths and tonal contrast applies

  Ssigns should ideally be placed on fixed parts of a building such as walls and floors

  Consideration should be given to duplicating detailed signs or instructions, at both high
  and low level, ie 1.4-1.7m for a standing person and 1-1.1m for viewing by a wheelchair
  user

  Low level signs supported on two vertical poles (eg city maps) should have a lower
  tapping rail or skirting between the posts to prevent pedestrians inadvertently walking
  between them and colliding with the sign; the rail or skirting should be 300-400mm above
  ground level; the sign must not extend more than 150mm beyond the supporting posts

  Overhead signs (and any other obstacles over a footway) should give height clearances
  of 2.1m min below suspended signs, 2.3m otherwise

  The height above ground of any controls for signage that need to be operated from a
  wheelchair should be at least 750mm and not more than 1200mm above ground level; for
  non-wheelchair users, the height of controls may be between 1000mm and 1400mm
CSSAAMOPPL LEE S HEEAASDHEERL T E R S
  A N M P I E H & D E R
S S A MT E R SH G E N E R A L L Y
  H E L P L E   E A D


  Shelters should be provided where
  there is space to do so and in more
  exposed locations enclosed shelters
  should be provided if possible

  In order to provide shelter for those
  having to pause before entering a
  building other than a dwelling, the
  principal entrance of a building should
  incorporate some form of weather
  protection, such as a canopy or
  recessed entrance, unless freely
  accessible automatic doors are installed

  In locations not exposed to severe
  weather, a cantilever bus shelter with
  one end panel offers good accessibility
  and some weather protection; where
  the end panel is used for advertising, it
  should be at the downstream end of the
  shelter so that people can see the bus
  approaching
S S A M T E R S H -E A D E R R I A L S
  H E L P L E        M A T E


   For reasons of personal security, a bus
   shelter should be made mainly of
   transparent material and well lit at night,
   though use of other materials may be
   more appropriate in rural areas

   Any part of the structure of a canopy
   should not present an obstruction to
   visually impaired people and contrast
   banding should be added to vertical
   elements

   Where glass or transparent walls are
   used they should have a tonally
   contrasting band at least 150mm wide
   at a height of 1400mm to 1600mm from
   the ground and a second, lower band
   may be placed at 900mm to 1000mm
   above ground level
L I G H T I N G
L I G H TP I L EG HGEEANDEERRA L L Y
  S A M       N


   The primary function of lighting is wayfinding
   and well planned lighting benefits everyone
   using transport and pedestrian facilities at
   night, providing a sense of security and safety,
   and encouraging full use of an area

   More than that, carefully considered lighting
   systems will improve the aesthetics of a
   scheme at night, accentuating colour, tone and
   texture: consideration should be given to how
   different lighting will affect colour rendering
   and contrasting materials

   Lighting often fulfils secondary functions,
   eg providing directional guidance, highlighting
   potential hazards such as steps or enabling
   visibility of signs and instructions
L I G H TP I L EG HF EOARD E R U A L I T Y
  S A M       N            E Q


   People with visual impairments require clarity from a
   lighting system in order to avoid visual confusion and, in
   some cases, acute discomfort

   Reflection/glare
        lights should be positioned where they do not
        directly cause glare or reflection on certain materials
        eg glass
        non-reflective surfaces for signs etc should be
        specified
        spotlights and floodlights must not be poorly
        positioned in a person’s direct line of vision

   Shadows mask hazards and are confusing for the visually
   impaired: pools of light and dark should be avoided
   through delivering a good level of ambient light and
   uniformly lighting an area; positioning lighting in unusual
   or unexpected places can create shadows and
   misleading visual effects

   Broad variations in lighting levels across an area will
L I G H TP I L EG H– E A D E R I F I C
  S A M       N        S P   C                A R E A S


   Good light levels are particularly important in
   potentially hazardous areas such as stair wells or
   changes in level along a route

   Each flight and landing of a stepped access route
   should be well illuminated, providing a clear
   distinction between each step and riser (use of
   contrasting materials to step nosings is also helpful
   to achieve this)

   Uplighters placed above a standing person’s eye
   level will deliver glare-free illumination; if placed
   below they can be uncomfortable

   Light columns can obstruct the footway and present
   a hazard: they should ideally be located at the back
   of the footway or at least sited consistently either to
   only the back or front of a footway

   To reduce clutter at street level in urban areas, new
   light fittings should, where practical, be fixed to
D S A M I P L E HHE E A D E R R N A L
  D A      N T        E X T E                        E N V I R O N M E N T


Further reading
   Requirements of the Equality Act 201o here:
   http://www.direct.gov.uk/en/DisabledPeople/RightsAndObligations/DisabilityRights/DG_4001068
   Transport for London Streetscape Guidance:
   http://www.tfl.gov.uk/assets/downloads/businessandpartners/streetscape-guidance-2009-street-
   furniture-108.pdf
   For further information on the use of colour, refer to ‘Colour, Contrast & Perception - Design
   Guidance for Internal Built Environments’ (University of Reading, 1997) and BS 8300
   Part M of the Building Regulations
   http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADM_2004.pdf
   For detailed guidance on the use of signs, refer to the ‘Sign Design Guide’, (a publication produced
   by the Sign Design Society)
   http://www.signdesignsociety.co.uk/index.php?option=com_content&view=article&id=54:the-sign-
   design-guide&catid=10&Itemid=19
   BS 5489:2012 is the code of practice for the design of road lighting
   ‘Inclusive Mobility’ http://assets.dft.gov.uk/publications/access-inclusive-mobility/inclusive-mobility.pdf
   For further guidance on external lighting refer to the CIBSE Code for Lighting and BS 8300 or seek
   guidance from a member of the Institution of Lighting Professionals
   There are many valuable websites offering guidance on a regional basis, for example
   http://www.mdpag.org.uk/standards.htm in Manchester

More Related Content

What's hot

What's hot (20)

CASE STUDY.pptx
CASE STUDY.pptxCASE STUDY.pptx
CASE STUDY.pptx
 
cultural heritage cum
cultural heritage cum cultural heritage cum
cultural heritage cum
 
Thesis report on Habitat Centre, Noida
Thesis report on Habitat Centre, Noida Thesis report on Habitat Centre, Noida
Thesis report on Habitat Centre, Noida
 
dilli haat ina case study
dilli haat ina case study dilli haat ina case study
dilli haat ina case study
 
Shopping Centre Projects
Shopping Centre ProjectsShopping Centre Projects
Shopping Centre Projects
 
Exhibition case study
Exhibition case studyExhibition case study
Exhibition case study
 
Jawahar kala kendra Case study
Jawahar kala kendra Case studyJawahar kala kendra Case study
Jawahar kala kendra Case study
 
Urban Entertainment Center, introduction, live case study, literature case st...
Urban Entertainment Center, introduction, live case study, literature case st...Urban Entertainment Center, introduction, live case study, literature case st...
Urban Entertainment Center, introduction, live case study, literature case st...
 
Literature study on art gallery
Literature study on art galleryLiterature study on art gallery
Literature study on art gallery
 
Exhibition centre
Exhibition centreExhibition centre
Exhibition centre
 
Shopping Mall - Thesis 2016
Shopping Mall - Thesis 2016Shopping Mall - Thesis 2016
Shopping Mall - Thesis 2016
 
Hyderabad international convention centre
Hyderabad international convention centreHyderabad international convention centre
Hyderabad international convention centre
 
Visitors, Movement, and Circulation in Museums
Visitors, Movement, and Circulation in MuseumsVisitors, Movement, and Circulation in Museums
Visitors, Movement, and Circulation in Museums
 
Public and semi public spa ce
Public and semi public spa cePublic and semi public spa ce
Public and semi public spa ce
 
Bharat bhavan
Bharat bhavan Bharat bhavan
Bharat bhavan
 
Jaipur
JaipurJaipur
Jaipur
 
Final literature commercial_kus2030174979[2]
Final literature commercial_kus2030174979[2]Final literature commercial_kus2030174979[2]
Final literature commercial_kus2030174979[2]
 
Indian Habitat Centre
Indian Habitat CentreIndian Habitat Centre
Indian Habitat Centre
 
Renaissance
RenaissanceRenaissance
Renaissance
 
City center kolkata
City center kolkataCity center kolkata
City center kolkata
 

Similar to The Impact of the DDA on Landscape Design

Tormax united-kingdom i-motion-2401_specifications_barrier-free-building
Tormax united-kingdom i-motion-2401_specifications_barrier-free-buildingTormax united-kingdom i-motion-2401_specifications_barrier-free-building
Tormax united-kingdom i-motion-2401_specifications_barrier-free-building
HugoCopire1
 
Shopping complex lit study
Shopping complex lit studyShopping complex lit study
Shopping complex lit study
Nawin Goray
 
The City at Eye Level, seeing everything in a city including facilities, buil...
The City at Eye Level, seeing everything in a city including facilities, buil...The City at Eye Level, seeing everything in a city including facilities, buil...
The City at Eye Level, seeing everything in a city including facilities, buil...
UmerFarooqui8
 
Presentation on stairs, ALA National Conference, Oct 2015
Presentation on stairs, ALA National Conference, Oct 2015Presentation on stairs, ALA National Conference, Oct 2015
Presentation on stairs, ALA National Conference, Oct 2015
Dohrmann Consulting
 

Similar to The Impact of the DDA on Landscape Design (18)

BARRIER FREE DESIGN - Lecture Indus university
BARRIER FREE DESIGN - Lecture Indus universityBARRIER FREE DESIGN - Lecture Indus university
BARRIER FREE DESIGN - Lecture Indus university
 
Tormax united-kingdom i-motion-2401_specifications_barrier-free-building
Tormax united-kingdom i-motion-2401_specifications_barrier-free-buildingTormax united-kingdom i-motion-2401_specifications_barrier-free-building
Tormax united-kingdom i-motion-2401_specifications_barrier-free-building
 
Accessability
AccessabilityAccessability
Accessability
 
Barrier Free Design
Barrier Free DesignBarrier Free Design
Barrier Free Design
 
Barrier free design
Barrier free designBarrier free design
Barrier free design
 
0009 special requirements of the disabled in interior spaces
0009 special requirements of the disabled in interior spaces0009 special requirements of the disabled in interior spaces
0009 special requirements of the disabled in interior spaces
 
Barrier Free Architecture
Barrier Free ArchitectureBarrier Free Architecture
Barrier Free Architecture
 
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PEOPLE(DISABILITY)-E.HARSHITHA
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PEOPLE(DISABILITY)-E.HARSHITHASCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PEOPLE(DISABILITY)-E.HARSHITHA
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PEOPLE(DISABILITY)-E.HARSHITHA
 
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PERSONS-E.HARSHITHA
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PERSONS-E.HARSHITHASCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PERSONS-E.HARSHITHA
SCIENCE AND TECHNOLOGY FOR SPECIALLY ABLED PERSONS-E.HARSHITHA
 
Universal Design and urban environment, by Antonio Caperna PhD
Universal Design and urban environment, by Antonio Caperna PhDUniversal Design and urban environment, by Antonio Caperna PhD
Universal Design and urban environment, by Antonio Caperna PhD
 
Barrier free environment
Barrier free environmentBarrier free environment
Barrier free environment
 
Shopping complex lit study
Shopping complex lit studyShopping complex lit study
Shopping complex lit study
 
Electronic travel aid
Electronic  travel aidElectronic  travel aid
Electronic travel aid
 
The City at Eye Level, seeing everything in a city including facilities, buil...
The City at Eye Level, seeing everything in a city including facilities, buil...The City at Eye Level, seeing everything in a city including facilities, buil...
The City at Eye Level, seeing everything in a city including facilities, buil...
 
UX Heuristics for Large Environments [DRAFT]
UX Heuristics for Large Environments [DRAFT]UX Heuristics for Large Environments [DRAFT]
UX Heuristics for Large Environments [DRAFT]
 
Making mobile accessible
Making mobile accessibleMaking mobile accessible
Making mobile accessible
 
Municipality Accessibility
Municipality AccessibilityMunicipality Accessibility
Municipality Accessibility
 
Presentation on stairs, ALA National Conference, Oct 2015
Presentation on stairs, ALA National Conference, Oct 2015Presentation on stairs, ALA National Conference, Oct 2015
Presentation on stairs, ALA National Conference, Oct 2015
 

Recently uploaded

The basics of sentences session 3pptx.pptx
The basics of sentences session 3pptx.pptxThe basics of sentences session 3pptx.pptx
The basics of sentences session 3pptx.pptx
heathfieldcps1
 

Recently uploaded (20)

HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptxHMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
HMCS Max Bernays Pre-Deployment Brief (May 2024).pptx
 
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdfUGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
 
Sociology 101 Demonstration of Learning Exhibit
Sociology 101 Demonstration of Learning ExhibitSociology 101 Demonstration of Learning Exhibit
Sociology 101 Demonstration of Learning Exhibit
 
This PowerPoint helps students to consider the concept of infinity.
This PowerPoint helps students to consider the concept of infinity.This PowerPoint helps students to consider the concept of infinity.
This PowerPoint helps students to consider the concept of infinity.
 
Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)Accessible Digital Futures project (20/03/2024)
Accessible Digital Futures project (20/03/2024)
 
OSCM Unit 2_Operations Processes & Systems
OSCM Unit 2_Operations Processes & SystemsOSCM Unit 2_Operations Processes & Systems
OSCM Unit 2_Operations Processes & Systems
 
On_Translating_a_Tamil_Poem_by_A_K_Ramanujan.pptx
On_Translating_a_Tamil_Poem_by_A_K_Ramanujan.pptxOn_Translating_a_Tamil_Poem_by_A_K_Ramanujan.pptx
On_Translating_a_Tamil_Poem_by_A_K_Ramanujan.pptx
 
Food safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdfFood safety_Challenges food safety laboratories_.pdf
Food safety_Challenges food safety laboratories_.pdf
 
latest AZ-104 Exam Questions and Answers
latest AZ-104 Exam Questions and Answerslatest AZ-104 Exam Questions and Answers
latest AZ-104 Exam Questions and Answers
 
The basics of sentences session 3pptx.pptx
The basics of sentences session 3pptx.pptxThe basics of sentences session 3pptx.pptx
The basics of sentences session 3pptx.pptx
 
Basic Intentional Injuries Health Education
Basic Intentional Injuries Health EducationBasic Intentional Injuries Health Education
Basic Intentional Injuries Health Education
 
Beyond_Borders_Understanding_Anime_and_Manga_Fandom_A_Comprehensive_Audience_...
Beyond_Borders_Understanding_Anime_and_Manga_Fandom_A_Comprehensive_Audience_...Beyond_Borders_Understanding_Anime_and_Manga_Fandom_A_Comprehensive_Audience_...
Beyond_Borders_Understanding_Anime_and_Manga_Fandom_A_Comprehensive_Audience_...
 
FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024FSB Advising Checklist - Orientation 2024
FSB Advising Checklist - Orientation 2024
 
Jamworks pilot and AI at Jisc (20/03/2024)
Jamworks pilot and AI at Jisc (20/03/2024)Jamworks pilot and AI at Jisc (20/03/2024)
Jamworks pilot and AI at Jisc (20/03/2024)
 
Plant propagation: Sexual and Asexual propapagation.pptx
Plant propagation: Sexual and Asexual propapagation.pptxPlant propagation: Sexual and Asexual propapagation.pptx
Plant propagation: Sexual and Asexual propapagation.pptx
 
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
Basic Civil Engineering first year Notes- Chapter 4 Building.pptxBasic Civil Engineering first year Notes- Chapter 4 Building.pptx
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
 
Google Gemini An AI Revolution in Education.pptx
Google Gemini An AI Revolution in Education.pptxGoogle Gemini An AI Revolution in Education.pptx
Google Gemini An AI Revolution in Education.pptx
 
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
TỔNG ÔN TẬP THI VÀO LỚP 10 MÔN TIẾNG ANH NĂM HỌC 2023 - 2024 CÓ ĐÁP ÁN (NGỮ Â...
 
REMIFENTANIL: An Ultra short acting opioid.pptx
REMIFENTANIL: An Ultra short acting opioid.pptxREMIFENTANIL: An Ultra short acting opioid.pptx
REMIFENTANIL: An Ultra short acting opioid.pptx
 
HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptxHMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
 

The Impact of the DDA on Landscape Design

  • 1. S A M P L E H E A D E R DDA IN THE EXTERNAL ENVIRONMENT
  • 2. D S A M I P L E HHE E A D E R R N A L D A N T E X T E E N V I R O N M E N T Disability Discrimination Act 2005 (DDA) & Equality Act 2010 In light of this legislation, the design of street furniture elements for people with visual or mobility impairment needs to be carefully considered to ensure it is ‘fit for purpose’. The DDA makes it unlawful for a provider of services (a Local Authority for instance) to discriminate against a disabled person by making it unreasonably difficult for the disabled person to use that service. Although this responsibility may ultimately lie with the client or their agents (ie specifiers), it is still our duty as a supplier to take ‘reasonable’ steps and modify products to make them suitable for all to use. In addition to the DDA, there are many guidelines produced by various bodies that have no legal status; however, there is plenty of information available on established best practice that can be applied to our products (see Further Reading at the end of the presentation for more information).
  • 3. D S S A B I LL E T H E IA SDSEURE S I A M P I Y The term ‘disability’ covers people with physical, sensory or mental impairment. A conservative estimate is that approx 10-15% of the population have some degree of impairment and many face barriers to movement in the external environment. Also consider those not conventionally considered disabled but who encounter daily mobility problems eg people with small children, those carrying heavy shopping or luggage, people with temporary accidental injuries and older people. While there are aspects of design in the pedestrian environment that are helpful to all or most disabled people (and many able bodied too), there are certain specific facilities needed by people with a particular kind of impairment. No category is mutually exclusive. Many disabled people have more than one impairment and although it is not possible to consider the needs of every individual using the public realm, it should be recognised that a solution for one group of users may not assist another: rarely does one solution suit all.
  • 4. C S A M P LNE PHREO B LEERM S O M M O A D E N C O U N T E R E D Locomotion Includes people using wheelchairs and those who walk with difficulty and often use an aid such as a stick or walking frame Up to 70% of disabled people have locomotion difficulties: those with walking difficulties outnumber wheelchair users by about 10:1
  • 5. C S A M P LNE PHREO B LEERM S O M M O A D E N C O U N T E R E D Sight Can be sub-divided into blind and partially sighted people Only around 5 per cent of visually impaired people have no sight at all: the vast majority have some residual vision, and can distinguish colours, or shades of light and dark It is estimated that there are almost 2,000,000 in Great Britain with a significant sight loss
  • 6. C S A M P LNE PHREO B LEERM S O M M O A D E N C O U N T E R E D Hearing Can also be sub- divided into those who are profoundly deaf and those with impaired hearing The RNID estimates there are over 8,000,000 deaf or hard of hearing people in the UK
  • 7. C S A M P LNE PHREO B LEERM S O M M O A D E N C O U N T E R E D Reaching, stretching & dexterity Often as a result of advanced age and/or arthritis, which can make movements painful and difficult, muscular dystrophy (causing a loss of muscular strength), or complaints of the nervous system Difficulty sitting down or standing up needs to be considered when providing seating for people with mobility problems
  • 8. C S A M P LNE PHREO B LEERM S O M M O A D E N C O U N T E R E D Learning disabilities Making it hard to understand complicated information on signage or to use complex machines (some ticket machines)
  • 9. S T R E E T F U R N I T U R E G E N E R A L L Y A desirable urban realm is accessible, safe, legible, and inclusive A coordinated and consistent design, supported by the logical installation of street furniture, will allow users to be unhindered by inappropriately located obstacles Badly sited furniture is an obstruction to people with both mobility and visual impairments Ideally, items of street furniture should be grouped together where possible (at the back of the footway, out of the main pedestrian flow) so that visually impaired people can more easily identify, and avoid, the potential hazard
  • 10. S S A M E T E F U R N I TE UR R E T R E P L H E A D P L A C E M E N T Items should be mounted on walls or buildings whenever possible; if not, placing them at the back of the footway, as near the property line as possible, is acceptable (max distance from the property line to the edge of a pole should be 275mm) However, this is sometimes not ideal as the building line can provide the best route for visually impaired people who use canes using building facades as a guide If items are placed adjacent to a road, they should be a min 450mm away from the edge of the carriageway, increased to 600mm where there is a severe camber or crossfall BS5489 provides safe distance from kerb edge to light column centre – these may be as much as 1500mm A clear area of footpath, a minimum 1200mm wide, should be allowed for access, since visually impaired people who receive mobility training are trained to walk in
  • 11. S S A M E T E F U R N I TE UR R E T R E P L H E A D D E T A I L S Free-standing items, such as individual bollards, are a particular problem for visually impaired people and it is essential (while taking account of heritage issues) to consider the means of making them apparent to people with reduced vision Street furniture should be detectable at ground level with a long cane; for example, the addition of tapping rails to cycle stands should be considered at either end of a run If there is a need for more than one pole to support any item eg signage, they should be set at least 1m apart All street furniture should be at least 1000 millimetres high as anything lower (eg benches without backrests and low bollards) are not in most adults’ normal line of sight
  • 12. C S A MT E R L U T P L E R E D U C R I O N H A D E T To reduce street clutter and hence the number of potential obstacles to the safe movement of visually impaired people, it may be desirable to coordinate certain elements of street furniture (traffic signals and signage, bins, banners etc with street lighting columns ALTHOUGH… Projecting litterbins fixed to lighting columns and the glazed side walls of cantilevered bus shelters are examples of street furniture that may cause problems through being undetectable at ground level
  • 13. C S A M P L E TH E A D EC O N T R A S T O L O U R / O N A L R If, for practical reasons, it is necessary to locate freestanding items of street furniture within (or close to) an access route, their presence should be clearly apparent, for example by ensuring that they contrast in colour and luminance with the background against which they will be seen Many guidelines advocate the use of colour / tonally contrasting marking to identify street furniture to those with residual sight, although such treatments may not be considered appropriate in historic areas While colour contrasted bands will help to some extent, the choice of colour for the overall post or bollard also affects visibility - grey poles in particular are often problematic as they tend to blend into a paved background
  • 14. T O A M L LC O H E A D E R S N A P E N T R A S T - M A T E R I A L S Contrast is the visual perception of the different light reflectance values of two surfaces and it is essential to ensure that colours selected for street furniture contrast with their surroundings Hues that appear to be quite different from one another in colour (chroma) can be very similar tonally (e.g. green and brown) and therefore do not give sufficient contrast – particularly to those with colour blindness It is generally recognised that 30 points of difference in light reflectance between surfaces should give adequate contrast for a large proportion of partially sighted people; however, the level of light shining on a surface has a large influence on the visual perception of contrast, and light levels outdoors obviously vary greatly so higher differences in light reflectance value would be preferable As a rule of thumb, for existing street furniture, a good contrast will show up clearly on a black and white photograph while poor contrast will show up simply as shades of grey
  • 15. T O A M L LC O H E A D E R S N A P E N T R A S T D I M E N S I O N S A contrast band should be a minimum depth of 150mm, positioned with the lower edge of the band between 1400mm and 1600mm above ground level (essentially at eye level); some guidelines advocate deeper bands (300mm), or more than one band (three dark, two light bands each 100mm deep), but the single band, minimum 150mm, is acceptable to the Royal National Institute for the Blind Specific items require different treatment: Bollards and low furniture should display a single band at approx 1m above ground level Items of furniture such as bus shelters and lighting columns should be highlighted with two bands, one at 900-1000 millimetres and the other at 1400-1600 millimetres measured from ground level to the top of the band In the case of glazed screens, such as those found on bus shelters, two coloured bands should also be provided. The colour chosen for the highlighting on glazing should contrast with the background against which it will be viewed. When installing new items of street furniture, tonal contrast should be a key element within the design of materials and finishes. When integrated into the design process, a broader range of aesthetically pleasing designs can be achieved and specifiers should not be restricted to using 150mm banding since this is the minimum vertical dimension required. Where appropriate, the banding could take the form of a logo or emblem for example, and applied to a glass panel in a shelter.
  • 16. SSAEM P L E GH E A D E R A T I N
  • 17. S S A T IPNL G E M E H E A D E R G E N E R A L L Y Where people with a disability are able to walk at all, approximately 30% can manage no more than 50 metres without stopping or experiencing severe discomfort and a further 20% can only manage between 50 and 200 metres; therefore seats provided at 50m intervals will help less mobile people use the streets more easily and encourage the use of public space In designing the layout of seating, space should be made available for wheelchair users to sit with their companions (or assistance dogs to sit nearby) and the provision of sufficient space to manoeuvre is an important factor to consider if disabled people are to use facilities independently Bench seats with open ends and sharp corners should be avoided Seat supports should not have visible base plates nor extend beyond the profile of the seat where they could create a trip hazard It is vital that rain water is not allowed to collect on any part of the seat and seats should be made of vandal resistant, easily cleanable material (timber is the preferred material where people may sit for longer periods of time) Sitting on a slight slope can be very uncomfortable for wheelchair users
  • 18. S S A T IPNL G E M E – E A S U A L H V I D E R C L A R I T Y In order for seating to be DDA compliant it should be highly visible, with a bold side profile, and in a colour and luminance that contrast with immediate surroundings and surfaces Alterations to the colour and/or finish of seating in certain locations may need to be made or the addition of contrasting banding or reflective strips might be required
  • 19. S S A T IPNL G E M E -H E A M E N S I O N S D I D E R Seat surface heights are crucial to the comfort of individuals if seating is to be used for prolonged periods. If a seat is too high or too low a person may experience considerable discomfort as a result of poor posture Conventional seat heights vary over the range of 420-580mm, with a common height being between 450mm and 480mm (BS8300 recommends 450-475mm for fixed seating) Seat heights slightly greater than the normal Extract from TfL’s Streetscape Guidance 2009 450mm are more convenient for people with restricted mobility
  • 20. S S A T IPNL G E M E -H E A M E N S I O N S D I D E R If space permits, it is helpful for people of restricted growth (and children) if there are some seats at a lower level than the standard height. Where possible, seats of varied height and width, ie higher and/or wider than standard seating, should also be provided for people of large stature or those with restricted leg movement Seat widths are recommended to be a minimum 500mm; wider may need to be provided to allow for those of large stature Although conventional seating to these dimensions will meet the needs of most disabled people, there are some who find perch-type seating, against Extract from TfL’s Streetscape Guidance 2009 which people half lean and half sit, easier to use Perch seating (at bus stops and other locations where people wait for a short period of time) is recommended at a height of 580-800mm
  • 21. S S A T IPNL G E M E – E A D E R E S T S H B A C K R Seats with backrests should be provided at regular intervals along well used pedestrian routes; approx 50% of seating should have backs For lower back support, a back height of approx 300-500 mm is recommended, depending on the length of time likely to be spent seated and the formality of the seat design Ideally, a minimum 75mm gap should be allowed between the top of the seat and base of the backrest For comfort, seat backs should be slanted back at approx 5-15o ; the seat angle will also need to be adjusted to maintain a seat to back angle of 90-100o
  • 22. S S A T IPNL G E M E – E A D E R S T S H A R M R E A mixture of seating options, with or without arms, should be provided to assist in rising from the seat Seats placed in a row should either all have armrests or no armrests; a mixture within a single row can cause difficulties for visually impaired people To allow wheelchair users to transfer on to fixed seating, not all seats should have armrests, i.e. there should be no armrest on the end of a row of seats (the same principle applies for those with pushchairs) Armrests should be placed approx 200mm above seat level; width should be 40-70mm Armrests should have no sharp edges and the ends must be rounded if not connected to the seat; on longer seats, additional arms can be
  • 23. B S A M A R D SH E A D E R O L L P L E Generally, the use of bollards should be avoided as they clutter the streetscape and can create an unnecessary hazard for people with mobility and visual impairments: improved legibility for both pedestrians and vehicle users through good design will minimise the need for bollards Bollards are recommended to be a minimum 1000mm in height ; under no circumstances should adjacent bollards be linked with chain or rope as this is a hazard for blind and partially sighted people Bollards can be customised for DDA compliance through the addition of contrast colours or finishes and reflective banding to break up the bollard outline and increase visibility The incorporation of a light at the top of bollards is an effective way of making them more easily seen at night
  • 24. C S A M E LS T A N D S E R Y C L P E H E A D In order to assure DDA compliance, cycle stands can be customised through the addition of contrasting colours and/or reflective banding Cycle stands should be spaced a minimum 1000mm, and ideally 1200mm, apart The addition of tapping bars to Sheffield type cycle stands can also aid the visually impaired so that an empty stand can be identified by someone using a cane; rails are often added only to the two end stands in a run for reasons of economy
  • 25. L I TA TME PRL E I H E A D E R S B N S Litter bins should be between 1000mm and 1300mm in height Bins should continue down or close to ground level and be of a rounded design in a colour that contrasts with their surroundings The bin opening should be approx 1000mm above ground level
  • 26. T S A M P G R I L LE EA SD E R R E E L E H If feasible, grilles should be positioned outside the boundaries of pedestrian thoroughfares; gratings within an access route must be of a non-slip finish and set flush with the surrounding surface Slots in gratings should be a max 13mm wide and set at right angles to the dominant line of travel The diameter of circular holes in gratings should be a max18mm (Heelsure drainage grates from Marshalls have slots of 6mm max for this reason); this recommendation is intended to reduce the risk of trapping the ends of canes and of wheelchair wheels becoming stuck
  • 27. RSSAAM PPL LGES HH& EAADDEERU S T R A D E A I L I N E M E B A L R
  • 28. H S A M P L E L HT O D E R P S A N D R A I E A S T E Any flight of steps that consists of two or more risers should be provided with a handrail on each side Where a stair is used simultaneously by a large number of people, and the overall unobstructed width of steps is greater than 1800 mm, an additional handrail, or handrails, should be provided to divide the flight into separate channels; no channel should have an unobstructed width of less than 1000 mm or more than 1800 mm The division of wide flights into separate channels will allow an individual who may have less strength on one side or the other to be within easy reach of support; An ambulant disabled person may be weaker on one side so a handrail on each side of the flight is essential for support If any stairway consists of two or more flights, separated by a landing or landings, each handrail should, if feasible, be continuous throughout the series of flights
  • 29. L O A M T IL O N H O F DH EA RN D R A I L S C A P E E A The vertical height to the top of a handrail should be between 900mm and 1000mm from the pitch line of a flight and between 900mm and 1100mm from the surface of a landing Second, lower handrails for children and people of restricted growth are helpful and should be fixed at heights of between 550mm and 650mm Each handrail should extend at least 300 mm beyond the first and last nosing; this extension allows an individual to steady or to brace themselves before ascending or descending As much of the extension as possible should be horizontal and the extension should not intrude into any circulation route
  • 30. H S A M P L E L H D E S I EGRN A N D R A I E A D A handrail should be: a) an oval or circular profile (a non-circular handrail is as easy to grip as a circular handrail and gives better support) b) finished to contrast in colour and luminance with its surroundings, without being highly reflective c) smooth and comfortable to grip (slip resistant) with no sharp edges, not cold to the touch (the use of Ferrocast, timber or certain coatings, such as powdered nylon, is recommended) For an individual with impaired vision, the change in slope of the handrail and its return into a wall will signal the start or finish of the flight At the start and finish, the handrail should be terminated in a way that will reduce the risk of clothing being caught: this is achieved by returning the handrail to the wall or floor, having a minimum rounded downturn of 100mm, or by terminating it with a scroll or similar feature
  • 31. H S A M P L E L H D I AMDEENRS I O N S A N D R A I E A circular handrail should have a minimum diameter of 40mm but not greater than 50mm; an oval profile should be 50mm wide by 38mm deep The profile should have rounded edges with a radius of at least 15 mm There should be a clearance of 50-60mm between a handrail and any adjacent wall surface (subject to a maximum intrusion of 100mm into the ramp or stairway); minimum of 600mm clear space above the handrail is required Any handrail support should meet the handrail centrally, on its underside, so there is no obstruction to the passage of the hand along the rail; the clearance between the bottom of the rail and any cranked support, or continuous balustrade, should be a minimum 50mm to minimize the risk of the handrail supports interrupting the smooth running of a person’s hand along the rail
  • 32. G S A M P L E IH E N G E R U A R D R A L I A D Railings are a hindrance to people with disabilities but if there is a steep slope or drop on a footway, precautions must be made to prevent wheelchair users running over the edge or blind/partially sighted people walking over it Guardrails and barriers adjacent to footways should be at least 1000mm high, preferably 1200mm, measured from ground level In common with other street furniture, guardrails should be clearly colour contrasted from their surroundings. If galvanised or black railing is used, in conservation areas it should at minimum have colour contrasted markings added to the end panels Grouping other furniture, such as litterbins, at the ends of railings will minimise the collision hazard at the ends of railings
  • 33. G S A M P L E I H E D IDME ER N S I O N S U A R D R A L A Guardrails should be designed to prevent guide dogs from walking under the rails, but there must be sufficient openings between vertical elements to ensure that children, people of limited stature and wheelchair users can see, and be seen, through the railings The top rail should have a smooth profile and, if intended to provide support, should be circular with a diameter of between 40mm and 50mm There should be an upstand, a minimum of 150-200mm in height, to act as a tapping rail for long cane users as well as a safeguard for wheelchair users Where it is necessary to provide staggered barriers across footways and footpaths in order to prevent conflict with other forms of traffic (for example at junctions with main roads) the barriers should be constructed of vertical bar sections 1200mm high and colour contrasted with their surroundings An offset between the two barriers of 1200mm allows wheelchair users convenient passage but discourages the riding of bicycles
  • 34. SSI A M P L EE H E A D E R G N A G
  • 35. W S A M P N D I N G AP R I R C I P L E S A Y F I L E H E D E N Buildings designed with a logical layout will directly assist wayfinding; everyone needs information about the purpose and layout of spaces if they are to maintain a clear sense of direction and independent use of a building Colour can be used to signal the location of certain features within a building eg walls within core areas containing stairs, lifts or toilets could be painted a particular colour to aid orientation Visual information can be provided by distinguishing floors, walls and ceilings etc; where a building relies upon its own vocabulary of finishes to convey information to people with sight or learning impairments, a key should be provided at a central information point Tactile maps or models of the interior layout of buildings aid the comprehension of the building for those with sight impairments
  • 36. S SG N A G E I A M P L E G E N D R R L L Y H A E E A Signs should form part of an integrated communication scheme that gives clear directions, information and instructions for the use of an area; they should support a wayfinding strategy that considers the needs of different types of users as well as the complexity of the area’s layout Making a sign clear and easy to read for a visually impaired person it will make the sign clear and easy to read for most people; the orientation of maps and plans should match that of the building The effectiveness of information is determined by: the location, accessibility, layout and height of signs the size of lettering, symbols and their reading distances the use of tactile letters and symbols colour/luminance contrast and lighting, including the finished surfaces of materials used the simultaneous use of audible cues/integration
  • 37. S SG N A G E I A M P L E G E N D R R L L Y H A E E A C O N T I N U E D The location of signs should be part of the process of planning a building or landscape Signs must be sited in logical positions where they do not cause obstruction and positioned at high level in areas that are likely to be crowded to ensure visibility Key information should be provided both visually and audibly, and in tactile form (embossed lettering, pictograms or Braille) where low enough to be touched (as no single medium can communicate information to all those who need it, some duplication will be necessary) Clear information is essential for people with impaired hearing who may be unable to ask, or feel uncomfortable about asking, for directions Symbols are an essential aid to supplement written instructions for people with learning difficulties: universally recognised pictograms should be used to
  • 38. S SG N A G E I A M P L E – EDAEDT E R L H A I D E S I G N The principles of clear signage are: the use of colour to highlight the sign from its background and to highlight the text on the sign (to enable a sign to be located on both light and dark backgrounds, a border can be incorporated on the sign, rather than changing the colour of the sign board) the need for upper and lower case lettering rather than all capitals consideration of text heights suitable for different viewing distances materials should be of a matt finish, avoiding reflective glass position signs where they will be well lit but avoiding reflections from low level sunlight and artificial lighting provide simple, short and consistent information use prescribed typefaces, colour and graphic devices
  • 39. S SG N A G E I A M P L E – D IAM EE N S I O N S H E D R Signage poles and cantilevered signs can present a barrier and a hazard to disabled people and the guidance provided earlier concerning the position of street furniture, minimum footway widths and tonal contrast applies Ssigns should ideally be placed on fixed parts of a building such as walls and floors Consideration should be given to duplicating detailed signs or instructions, at both high and low level, ie 1.4-1.7m for a standing person and 1-1.1m for viewing by a wheelchair user Low level signs supported on two vertical poles (eg city maps) should have a lower tapping rail or skirting between the posts to prevent pedestrians inadvertently walking between them and colliding with the sign; the rail or skirting should be 300-400mm above ground level; the sign must not extend more than 150mm beyond the supporting posts Overhead signs (and any other obstacles over a footway) should give height clearances of 2.1m min below suspended signs, 2.3m otherwise The height above ground of any controls for signage that need to be operated from a wheelchair should be at least 750mm and not more than 1200mm above ground level; for non-wheelchair users, the height of controls may be between 1000mm and 1400mm
  • 40. CSSAAMOPPL LEE S HEEAASDHEERL T E R S A N M P I E H & D E R
  • 41. S S A MT E R SH G E N E R A L L Y H E L P L E E A D Shelters should be provided where there is space to do so and in more exposed locations enclosed shelters should be provided if possible In order to provide shelter for those having to pause before entering a building other than a dwelling, the principal entrance of a building should incorporate some form of weather protection, such as a canopy or recessed entrance, unless freely accessible automatic doors are installed In locations not exposed to severe weather, a cantilever bus shelter with one end panel offers good accessibility and some weather protection; where the end panel is used for advertising, it should be at the downstream end of the shelter so that people can see the bus approaching
  • 42. S S A M T E R S H -E A D E R R I A L S H E L P L E M A T E For reasons of personal security, a bus shelter should be made mainly of transparent material and well lit at night, though use of other materials may be more appropriate in rural areas Any part of the structure of a canopy should not present an obstruction to visually impaired people and contrast banding should be added to vertical elements Where glass or transparent walls are used they should have a tonally contrasting band at least 150mm wide at a height of 1400mm to 1600mm from the ground and a second, lower band may be placed at 900mm to 1000mm above ground level
  • 43. L I G H T I N G
  • 44. L I G H TP I L EG HGEEANDEERRA L L Y S A M N The primary function of lighting is wayfinding and well planned lighting benefits everyone using transport and pedestrian facilities at night, providing a sense of security and safety, and encouraging full use of an area More than that, carefully considered lighting systems will improve the aesthetics of a scheme at night, accentuating colour, tone and texture: consideration should be given to how different lighting will affect colour rendering and contrasting materials Lighting often fulfils secondary functions, eg providing directional guidance, highlighting potential hazards such as steps or enabling visibility of signs and instructions
  • 45. L I G H TP I L EG HF EOARD E R U A L I T Y S A M N E Q People with visual impairments require clarity from a lighting system in order to avoid visual confusion and, in some cases, acute discomfort Reflection/glare lights should be positioned where they do not directly cause glare or reflection on certain materials eg glass non-reflective surfaces for signs etc should be specified spotlights and floodlights must not be poorly positioned in a person’s direct line of vision Shadows mask hazards and are confusing for the visually impaired: pools of light and dark should be avoided through delivering a good level of ambient light and uniformly lighting an area; positioning lighting in unusual or unexpected places can create shadows and misleading visual effects Broad variations in lighting levels across an area will
  • 46. L I G H TP I L EG H– E A D E R I F I C S A M N S P C A R E A S Good light levels are particularly important in potentially hazardous areas such as stair wells or changes in level along a route Each flight and landing of a stepped access route should be well illuminated, providing a clear distinction between each step and riser (use of contrasting materials to step nosings is also helpful to achieve this) Uplighters placed above a standing person’s eye level will deliver glare-free illumination; if placed below they can be uncomfortable Light columns can obstruct the footway and present a hazard: they should ideally be located at the back of the footway or at least sited consistently either to only the back or front of a footway To reduce clutter at street level in urban areas, new light fittings should, where practical, be fixed to
  • 47. D S A M I P L E HHE E A D E R R N A L D A N T E X T E E N V I R O N M E N T Further reading Requirements of the Equality Act 201o here: http://www.direct.gov.uk/en/DisabledPeople/RightsAndObligations/DisabilityRights/DG_4001068 Transport for London Streetscape Guidance: http://www.tfl.gov.uk/assets/downloads/businessandpartners/streetscape-guidance-2009-street- furniture-108.pdf For further information on the use of colour, refer to ‘Colour, Contrast & Perception - Design Guidance for Internal Built Environments’ (University of Reading, 1997) and BS 8300 Part M of the Building Regulations http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADM_2004.pdf For detailed guidance on the use of signs, refer to the ‘Sign Design Guide’, (a publication produced by the Sign Design Society) http://www.signdesignsociety.co.uk/index.php?option=com_content&view=article&id=54:the-sign- design-guide&catid=10&Itemid=19 BS 5489:2012 is the code of practice for the design of road lighting ‘Inclusive Mobility’ http://assets.dft.gov.uk/publications/access-inclusive-mobility/inclusive-mobility.pdf For further guidance on external lighting refer to the CIBSE Code for Lighting and BS 8300 or seek guidance from a member of the Institution of Lighting Professionals There are many valuable websites offering guidance on a regional basis, for example http://www.mdpag.org.uk/standards.htm in Manchester