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Complying with the
DDA and Part M Building Regulations
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The following section highlights key requirements of the Part M
Building Regulatons and shows how Polydeck products can help:
DDA / Part M Requirement:
Provision of an anti slip surface for walkways and
entrances.
What the regulations state:
1.13 A 'level approach' (from the boundary of the site and from car
parking spaces designated for disabled people to the principal
entrance, to a staff entrance or to an alternative accessible
entrance) will satisfy Requirement M1 or M2 if…
d. its surface is firm, durable and slip resistant,
with undulations not exceeding 3mm under a 1m straight edge for
formless materials. Inappropriate materials might be loose sand or
gravel;
POLYDECK SOLUTION: STANDARD FLAT
SHEET
DDA / Part M Requirement:
Provision of a tactile surface to assist the visually
impaired
What the regulations state:
1.13 A 'level approach' (from the boundary of the site and from car
parking spaces designated for disabled people to the principal
entrance, to a staff entrance or to an alternative accessible
entrance) will satisfy Requirement M1 or M2 if…
h. the danger of inadvertently walking into a vehicular
access route is minimised by providing a separate pedestrian route
and, where there is an uncontrolled crossing point across the
vehicular route, this is identified by a buff coloured blister
surface (see Diagram 1, and 'Guidance on the use of Tactile Paving
Surfaces').
Diagram 1 Tactile paving and an example of its use at an
uncontrolled crossing
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POLYDECK SOLUTION: ON STREET
TACTILE
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DDA / PART M REQUIREMENT:
Provision of an anti slip surface ramp.
What the regulations state:
1.26 A ramped access will satisfy Requirement M1 or M2 if:
f. the ramp surface is slip resistant, especially when
wet, and of a colour that contrasts visually with that of the
landings;
g. the frictional characteristics of the ramp and landing surfaces
are similar;
POLYDECK SOLUTION: STANDARD FLAT
SHEET
DDA / PART M REQUIREMENT:
Provision of corduroy tactiles at the top and bottom of
stairs
What the regulations state:
1.33 A stepped access will satisfy Requirement M1 or M2 if: c. a
'corduroy' hazard warning surface is provided at top and bottom
landings of a series of flights to give advance warning of a change
in level in accordance with Diagram 4;
d. where there is side access onto an intermediate
landing, a 'corduroy' hazard warning surface 400mm deep is provided
either on the intermediate landing 400mm from both upper and lower
flights, if there is sufficient space to accommodate the surface
outside the line of the side access, or within the side access
400mm from the intermediate landing if there is a continuous
handrail opposite the side access;
Diagram 4 Stepped access - key dimensions and use of hazard
warning surface
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POLYDECK SOLUTION: CORDUROY
TACTILE
DDA / PART M REQUIREMENT:
Provision of ‘colour constant’ sightlines and nosings
on the edges of steps
What the regulations state:
1.33 A stepped access will satisfy Requirement M1 or M2 if:
i. all nosings are made apparent by means of a
permanently contrasting material 55mm wide on both the tread and
the riser;
POLYDECK SOLUTION: NOSINGS OR HEAVY DUTY TREADS
DDA / PART M REQUIREMENT:
Provision of covered risers on steps for Common Stairs in Blocks of
Flats
What the regulations state:
9.5 Requirement M1 will be satisfied if a building containing
flats, in which a passenger lift is not to be installed, is
provided with a suitable stair, which has:
a. all step nosings distinguishable through contrasting
brightness;
e. risers which are not open;
POLYDECK SOLUTION: HEAVY DUTY
TREADS
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