HKdesign 012323

S/N Brief description of changes Revision date
q) Paragraph E.3.6 (renumbered from Paragraph E.3.7) –

i. Paragraph E.3.6.2 – Revised to change the max. height of
handrail to 1000mm.
ii. Addition of new Paragraphs E.3.6.3 and E.3.6.4.
iii. Paragraph E.3.6 Note.1 – Omitted and the remaining paragraphs
are renumbered.
iv. Paragraph E.3.6 Note.2 – Amended to require handrail to be
continuous throughout the entire length of stairs.
r) Paragraph E.3.8 – Moved to requirements under Section H.
Section G:
a) Addition of new Paragraph G.3.1A to exempt store room of area not
exceeding 6m2 and private lift lobby of area not exceeding 6m2.
b) Paragraph G.3.1.Note – Omitted.
c) Paragraph G.3.2.1 – Revised ventilation requirement for above ground
car park.
d) Addition of new Paragraph G.3.2.1.Note for clarity on the calculation of
effective open area for natural ventilation for various types of openings.
e) Paragraph G.3.2.2 – Amendments for clarity for acceptable sources for
natural ventilation
f) Paragraph G.3.2. Note – Paragraph is moved to new Paragraph
G.3.2.1A and revised to allow fitness room and clubhouse within
residential developments to be mechanically ventilated.
g) Addition of new Paragraph G.3.2.3 to set a maximum distance (12.0m)
for effective natural ventilation.
Section H:
a) Paragraph H.1.1 – Revised for clarity and to include new Paragraphs
H.2.1A and H.2.1B.
b) Paragraph H.2.1 – Addition of new Paragraphs H.2.1A and H.2.1B.
c) Paragraph H.2.2.(a) – Revised to improve the safety of occupants in
buildings.
d) Paragraph H.2.2.(b) – Revised to clarify the scope of “special service or
usage areas” in the original paragraph.
e) Paragraph H.3.1 – Revised to include new paragraphs H.2.1A and
H.2.1B
f) Paragraph H.3.2.1.(b) – Revised to standardize the minimum safety
barrier height requirement at stairs and ramps to 1.0m.
g) Paragraph H.3.2.1. Note – Addition of new paragraph H.3.2.1. Note 3 to
clarify the measurement of safety barrier height where a foothold is
provided next to the safety barrier.
h) Paragraph H.3.4.1 – Revised to standardize the application of the
requirement to all safety barriers and clarify the intent of the requirement.
i) Paragraph H.3.4.3.(b) – Paragraph is moved to new Paragraph H.3.4A
and revised to provide greater clarity on the climbability requirements.
j) Addition of new Paragraph H.3.4.4A to relax the requirement on gap size
for safety barriers in maintenance areas.
k) Paragraph H.3.4.5 – Revised and addition of new paragraphs (b) and (c)
to prevent little children from slipping through gaps in-between steps.
l) Paragraph H.3.4.7 – Paragraph is move to new Paragraph H.3.4A.
m) Addition of new Paragraph H.3.4A.
S/N Brief description of changes Revision date
Section N:
Paragraph N.2.1 – Revised to amend performance requirement to provide
greater clarity.
Section O:
Addition of a new Section O on Protection from Injury by Vehicles in
Buildings.
16 Ver 6.1 – Revision to Section B on Structural Design and Construction and 01 Oct 2014
Section K on Lifts and Escalators
Section B:
a) Paragraph B.3.7.1 (i) – Incorporate BS EN 10340, BS EN 1559-1 and 2.
b) Paragraph B.3.7.1 (m) – New paragraph on the selection and installation
of post-installed anchors using BS 8539.
c) Paragraph B.3.8.1 (g) – Incorporate BS EN 10340, BS EN 1559-1 and 2,
BS EN 1369, BS EN 12680-1 and 2, and BS EN 12681.
Section K:
Addition of new Paragraph K.3.2 to incorporate the acceptable solutions for
the design, installation and operation of vertical platform lifts and stair lifts.
17 Ver 6.2 – Addition of a new Section P on Daylight Reflectance 27 Jun 2016
18 Ver 6.3 – Deletion of the words “or air-conditioning system” from paragraph 01 Apr 2017
G.3.1(b) and addition of new paragraph G.3.1(c) on new requirements for air-
conditioning system for all types of building works.
19 Ver 6.4 – Amendments to section K on Lifts and Escalators 01 Mar 2018
a) Addition of new requirements for lifts and escalators in Paragraph

K.3.1(a)(ii), (iii) & (iv) and (b)(ii) & (iii).
b) Paragraph K.3.1.(b)(i) – SS626 to replace CP15 as the acceptable
solution for escalators.
c) Paragraph K.3.1 – Addition of definition for light curtain.
d) Paragraph K.3.2 – Addition of definition for stairlifts and vertical platform
lifts.
e) Addition of new Paragraph K.3.3 to incorporate the acceptable solutions
and definition for home lifts.
20 Ver 7.0 – The revisions are as follows: 25 May 2018
a) Addition of new performance requirements requirement in paragraph
B.2.1A for a floating structure on a body of water.
b) Paragraphs B.2.2 and B.2.4 – Addition of “or structure” after the word
“building”.
c) Paragraphs C.2.1 and C.2.2 deleted and replaced by new paragraphs
C.2.1, C.2.2 and C.2.3.
d) Note (1) after paragraph C.3.3.1 removed (relocated to paragraph
C.2.3).
e) Revision made to paragraph E.2.2 and addition of paragraphs E.2.3 and
E.2.4.

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S/N Brief description of changes Revision date

q) Paragraph E.3.6 (renumbered from Paragraph E.3.7) –

a) Addition of new requirements for lifts and escalators in Paragraph

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