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BSI 21/30412760 DC:2021 Edition

BSI 21/30412760 DC:2021 Edition

$13.70

BS 5911-1:2021. Concrete pipes and ancillary concrete – Part 1. Specification for unreinforced and reinforced concrete pipes (including jacking pipes) and fittings with flexible joints (complementary to BS EN 1916:2002)

Published By Publication Date Number of Pages
BSI 2021 31
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PDF Catalog

PDF Pages PDF Title
1 30412760.pdf
3 BS 5911-1_2021_DPC (1).pdf
8 1 Scope
2 Normative references
9 3 Terms and definitions
3.1 cementitious content
3.2 circular unit
10 3.3 circular pipe with base
3.4 egg shaped
3.5 lifting anchorage
3.6 manufacturing diameter
4 Symbols
5 General requirements
11 5.1 Application
5.2 Concrete (4.2) – composition
5.2.1 Types of cement
5.2.2 Cementitious content
5.3 Finish (4.3.2)
5.3.1 Surface evenness
5.3.2 Surface voids
5.4 Geometrical characteristics (4.3.3)
5.4.1 General
5.4.2 Nominal sizes
12 5.4.3 Internal dimensions of egg-shaped units
5.4.4 Manufacturing diameters of jacking pipes
13 5.4.5 Dimensional tolerances
5.4.5.1 Tolerances on the internal diameter of units with a circular bore, for use in a trench
5.4.5.2 Tolerances on the internal width/height of egg-shaped units
14 5.4.5.3 Tolerances on the internal diameter of jacking pipes
5.4.5.4 Tolerances on the external diameter of jacking pipes
5.4.5.5 Tolerance on the wall thickness
5.4.5.6 Deviation from straightness
5.4.5.7 Tolerance on the internal barrel length of jacking pipes
5.4.5.8 Squareness of ends
15 5.5 Durability of joints (4.3.4.2)
5.6 Crushing strength (4.3.5)
5.6.1 Strength classes and minimum crushing loads of units for trench use
5.6.2 Proof (cracked) load
5.6.3 Strength classes and minimum crushing loads of jacking pipes
17 5.7 Resistance to high pressure jetting
5.8 Lifting anchorages
5.9 Bends (4.3.3.3)
18 6 Special requirements
6.1 Reinforced concrete units
6.1.1 Concrete cover (5.2.2)
7 Conformity evaluation
7.1 Application
7.2 Finish
7.3 Geometrical characteristics
7.4 Lifting anchorages
8 Marking
19 Annex A (informative) Information to be supplied in an enquiry or order
20 Annex B (normative)
British Standards relevant to BS EN 1916:2002
21 Annex C (normative)
Surface finish tests
C.1 Surface evenness test
C.1.1 Principle
C.1.2 Apparatus
C.1.2.1 Gauge, as described in Figure C.1.
C.1.3 Procedure
C.1.3.1 Place the gauge in the unit so that its axis is in the same plane as the unit’s longitudinal axis.
C.1.3.2 Roll the gauge around the inside of the unit, taking care to ensure that its axis remains in the same plane as the unit’s longitudinal axis at all times.
C.1.4 Expression of result
C.2 Surface void test
C.2.1 Principle
C.2.2 Apparatus
C.2.2.1 Gauge, as described in Figure C.2.
22 C.2.3 Procedure
C.2.4 Expression of result
23 Annex D (normative) Dimensional tests
D.1 Internal dimensions test
D.1.1 Principle
D.1.2 Apparatus
D.1.2.1 Steel measuring tape or retractable pocket rule, conforming to BS 4484-1, with metric graduation and figuring conforming to BS 4484-1.
D.1.3 Procedure
D.1.4 Expression of results
D.2 External diameter test for jacking pipes
D.2.1 Principle
D.2.2 Apparatus
D.2.2.1 Steel measuring tape, steel band or retractable pocket rule, conforming to BS 4484-1, with metric graduation and figuring conforming to BS 4484-1.
D.2.3 Procedure
D.2.4 Expression of results
D.3 Wall thickness test
D.3.1 Principle
D.3.2 Apparatus
D.3.2.1 Outside spring caliper, conforming to BS 3123.
D.3.2.2 Steel measuring tape or retractable pocket rule, conforming to BS 4484-1, with metric graduation and figuring conforming to BS 4484-1.
24 D.3.3 Procedure
D.3.4 Expression of results
D.4 Straightness test
D.4.1 Principle
D.4.2 Apparatus
D.4.2.1 Rigid straightedge, made into a gauge of the form and dimensions shown in Figure D.1.
D.4.3 Procedure
D.4.3.1 Place the straightedge in the bore of the unit with Edge X (see Figure D.1) in contact with the unit and on a line parallel to its longitudinal axis. Hold the plane of the gauge in a radial plane and record whether both ends of the gauge, wher…
D.4.3.2 If both ends of the gauge were not in contact with the internal surface of the unit at both ends, reverse the gauge so that Edge Y, placed as above (see Figure D.1), is adjacent to the internal surface of the unit.
D.4.3.3 For jacking pipes, repeat the procedure with the straightedge placed along the external surface of the pipe and on a line parallel to its longitudinal axis.
25 D.4.3.4 Expression of result
D.5 Internal barrel length and squareness of ends tests for jacking pipes
D.5.1 Internal barrel length and squareness across a diameter test
D.5.1.1 Principle
D.5.1.2 Apparatus
D.5.1.2.1 Steel measuring tape or retractable pocket rule, conforming to BS 4484-1, with metric graduation and figuring conforming to BS 4484-1.
D.5.1.3 Procedure
26 D.5.1.4 Expression of result
D.5.2 Squareness across the wall thickness test
D.5.2.1 Principle
D.5.2.2 Apparatus
D.5.2.2.1 Cast iron or steel straightedge, conforming to BS 5204-1 or BS 5204-2.
D.5.2.2.2 Steel measuring tape or retractable pocket rule, conforming to BS 4484-1, with metric graduation and figuring conforming to BS 4484-1.
D.5.2.3 Procedure
Place the straightedge diametrically across the end of the jacking pipe in three positions, approximately equidistant around its circumference. Measure and record any out-of-squareness across the wall thickness at each end of the three diameters.
D.5.2.4 Expression of result
27 Annex E (normative) Lifting anchorage pull-out test
E.1 Principle
E.2 Apparatus
E.2.1 Testing machine, equipped with a load indicator, capable of applying the specified test load without vibration or shock and with an accuracy of 3 % of that load.
E.3 Preparation
E.4 Procedure
E.4.1 Place the apparatus on the unit and connect it to the lifting anchorage.
E.4.2 Apply the load at a uniform rate of between 150 kN/min and 250 kN/min, or in increments of not more than 1.5 kN at the same rate, up to the prescribed test load.
E.5 Expression of result
28 Annex F (normative) Test for resistance to high pressure jetting
F.1 Water source
F.1.1 Pressure measurement
F.1.2 Test temperature
F.2 Test
F.2.1 General
F.2.2 Apparatus
F.2.2.1 Pump unit
F.2.2.2 Guard plate
F.2.2.3 Nozzle
29 F.2.2.4 Flow rate accuracy
F.2.2.5 Test rig
F.2.3 Test pieces
F.2.4 Procedure
F.2.4.1 Pretest procedure
30 F.2.4.2 Test procedure
F.2.4.3 Recording results

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