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南非土木工程施工标准 M部分 楼道 英文原文节选 20100079 3-13 |
PREVENTION AGAINST FALLING
(a) Any flight of steps which contains more than three risers shall have protection
on each side provided by a secure wall, screen, railing or balustrade
which shall be not less than 1 m high and so erected that any such
wall, screen, railing or balustrade in any occupancy classified E2, E3, H1,
H2 or H3 shall not have any opening that permits the passage of a 100 mm
diameter ball: Provided that such protection in any occupancy not being
an occupancy classified E2, E3, H1, H2, H3 or H4, shall consist of at least
a handrail and one other rail midway between such handrail and the
stairtread.
(b) (i) Any flight of steps which contains more than five risers shall be provided
with at least one continuous handrail extending the full length
of such flight: Provided that this requirement shall not apply to any
building classified H4, or within individual dwelling units in an occupancy
classified H3.
(ii) Such handrail shall be securely fixed to such wall, screen, railing or
balustrade at a height of not less than 850 mm and not more than 1 m
measured vertically from the pitch line to the upper surface of the
handrail.
(iii) Such handrail shall be 6f such a design and be so fixed that there
shall be no obstructions on, above or near to it which may obstruct
the movement of any hand moving along it.
(c) (i) Subject to paragraph (b)(i), any flight which is less than 1,l m wide
shall have a handrail on at least one side and where the width of any
flight is more than 1,l m, handrails shall be provided on both sides
of such flight.
(ii) Such handrails shall comply with the requirements contained in paragraphs
(bxii) and (b)(iii).
MM4 FIRE REQUIREMENTS
Any stairway shall comply with the requirements contained in rules TT5, TT7,
TT19, TT20, TT21, TT22, TT23, TT24, TT25, TT26 and TT27, as the case may be.原件下载：  |
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