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BS 5911-3:2022

BS 5911-3:2022

$167.15

Concrete pipes and ancillary concrete products – Concrete manholes, inspection chambers and soakaways (complementary to BS EN 1917:2002). Specification

Published By Publication Date Number of Pages
BSI 2022 40
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PDF Catalog

PDF Pages PDF Title
5 Foreword
7 1 Scope
2 Normative references
8 3 Terms and definitions
Figure 1 — Use of corbel slabs in conjunction with double steps or ladder
9 4 Symbols
5 General requirements
10 5.1 Application
5.2 Concrete (4.2) – composition
5.3 Finish (4.3.2) – surface voids
5.4 Geometrical characteristics (4.3.3)
11 Table 1 — Manhole nominal sizes, internal manufacturing diameters and tolerances of circular units
Table 2 — Manhole nominal sizes, internal manufacturing sizes and tolerances of rectangular units
12 Table 3 — Inspection chambers
5.5 Finish (4.3.2)
13 Figure 2 — Typical base unit – circular
14 Figure 3 — Typical base unit – rectangular
15 Table 4 — Shape, size and position of openings in cover slabs, adjusting units and corbel slabs
16 Table 5 — Shape, size and position of openings in reducing and landing slabs
17 Figure 4 — Openings in circular cover slabs
Figure 5 — Openings in rectangular cover slabs
18 Figure 6 — Typical adjusting unit
Figure 7 — Typical corbel slabs
19 Figure 8 — Typical reducing slabs
Figure 9 — Typical landing slabs
20 Figure 10 — Typical inspection chamber arrangements
21 5.6 Crushing strength of chamber and shaft units (4.3.5)
22 Table 6 — Manhole strength classes and corresponding minimum crushing loads for circular and rectangular chamber and shaft units
23 Table 7 — Inspection chamber strength classes (horizontal loading)
5.7 Watertightness of vertical units (4.3.8)
5.8 Steps (4.1)
5.9 Lifting anchorages for slabs
5.10 Resistance of manhole joints to vertical loading
24 Figure 11 — Typical joint profiles
5.11 Seals
25 6 Special requirements
6.1 Reinforced concrete units and components (5.2) – concrete cover (5.2.2)
6.2 Vertical strength of cover, reducing and landing slabs and corbel slabs (5.2.4) – vertical strength of slabs to fit chambers greater than DN 1250 and corbel slabs
26 Table 8 — Vertical proof loads for cover, reducing and landing slabs to fit chambers greater than DN 1250 and corbel slabs
27 Figure 12 — Loading arrangements for cover slabs
28 Figure 13 — Loading arrangements for reducing slabs
29 Figure 14 — Loading arrangements for landing slabs
Figure 15 — Loading arrangements for corbel slabs
6.3 Test to determine resistance of manhole components to vertical loading
30 6.4 Vertical strength of inspection unit cover slabs and reducing slabs
Table 9 — Vertical loads for inspection chambers
7 Conformity evaluation
7.1 Application
7.2 Finish
7.3 Geometrical characteristics
7.4 Vertical strength of landing slabs and corbel slabs
7.5 Lifting anchorages for slabs
31 8 Marking
32 Annex A (normative)  British Standards relevant to BS EN 1917:2002
Table A.1 — British Standards relevant to BS EN 1917:2002
Annex B (informative)  Information to be supplied in an enquiry or order
Table B.1 — Information to be supplied in an enquiry or order
33 Annex C (normative)  Surface void test
Figure C.1 — Gauge for assessing surface voids
Annex D (normative)  Dimensional tests
34 Annex E (informative)  Assessment of strength class for rectangular shaft units when considering permissible installation depth
35 Figure E.1 — Symbols used in the assessment of strength class
36 Annex F (normative)  Lifting anchorage pull-out test
Figure F.1 — Typical anchorage pull-out testing machine on longitudinal section of unit wall
38 Bibliography

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BS 5911-3:2022
$167.15