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南非土木工程施工标准 G部分 开挖 英文原文节选 20100079 3-8 |
GENERAL
Subregulation Gl(1) contained in Part G of the National Building Regulations
shall be deemed to be satisfied where for any excavation on any site -
(a) measures to ensure the safety and stability of any property or service are
the subject of an acceptable rationai design carried out by or under the
supervision of a professional engineer or other approved competent
person; or
662 EXCAVATIONS FOR FOUNDATIONS
062.1
(b) such excavation complies with Part G of section 3 of SABS
Any excavation more than 3 m deep shall be designed by a professional engineer
662.2
602.3
662.4
or other approved competent person.
Any excavation for any foundation shall be taken down to fi
Provided that it shall be permissible to cast any foundation In filled ground if
approved measures are taken to ensure the stability and the smiceabiiity of
the building.
The bottom of any excavation in ground other than rock
Provided that where such a bottom is in the form of steps, s
horizontal and vertical surfaces.
Where any foundation is placed on solid rock, the bearing area shall be cleaned
and, where necessary, so stepped or dowelled as to prevent lateral movement
of such foundation.
SABS 0400-1990 66
GG2.5 Except where the foundation for any external masonry wall is placed on solid
rock, the bottom of the excavation for such a foundation shall not be less than
300 mrn below the level of the adjoining finished ground.原件下载：  |
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