BS 5911-103:1994

Committees responsible
Foreword
Specification
Section 1. General
1.1 Scope
1.2 References
1.3 Definitions
Section 2. Materials
2.1 Cement
2.2 Aggregates
2.3 Other concrete materials
2.4 Concrete mix, casting and finish
2.5 Reinforcement
Section 3. Dimensions and tolerances
3.1 Nominal size and effective length
3.2 Internal manufacturing diameter and actual
      diameter
3.3 External manufacturing diameter
3.4 Variation in the thickness of core wall
3.5 Squareness of ends
3.6 Deviation from straightness
3.7 Surface cracking
3.8 Joints
3.9 Bends
3.10 Junctions
3.11 Splays
Section 4. Pipe design and manufacture
4.1 Concrete core
4.2 Circumferential prestressing
4.3 Cover coat
Section 5. Tests
5.1 Tests
5.2 Test requirements
Section 6. Inspection procedures and marking
6.1 Type of inspection and batch size
6.2 Inspection procedures for pipes
6.3 Inspection procedures for bends and junctions
6.4 Marking
Annexes
A Information to be supplied in an enquiry or order
B Methods of assessing surface finish
C Methods of assessment deviation from straightness
D Crushing strength test method for pipes
E Hydrostatic test method
F Methods of testing pipe joints for angular
      deflection, straight draw and shear
G Facilities for purchasers
H Method for checking bonding of cement mortar coat
      and depth of cover
J Method of test for water absorption for core pipe
      concrete
Tables
1 Nominal sizes and tolerances for units
2 Rationalized metric nominal sizes of units
3 Minimum effective lengths and typical nominal
      angles of bends
4 Right-angled junctions
5 Oblique-angled junctions
6 Summary of test requirements and inspection
      procedures
7 Crushing test loads
8 Minimum angular deflection and straight draw for
      joints
9 Maximum number of individual defectives in last 10
      batches permitted for switching to reduced
      inspection (hydrostatic and works proof load
      crushing test)
10 Inspection plans for hydrostatic and works proof
      load crushing tests
Figures
1 Typical section of a prestressed concrete pipe
      with spigot and socket joint
2 Effective length of pipes
3 Typical bends
4 Typical junctions
5 Typical splay pipe
6 Joint test measurements
B.1 Gauge for assessing surface evenness
B.2 Gauge for assessing surface voids
C.1 Gauge for measuring deviation from straightness
D.1 Testing arrangements for the crushing test
D.2 Dimensions of feeler gauge for inspecting cracks
      in prestressed units
F.1 Loading arrangement for shear test on joints
List of references

Specifies requirements and test methods for prestressed concrete pipes used for the conveyance of sewage and surface water.