BS 8102:2009

What is BS 8102 about?

BS 8102 on the protection of below ground structures against water gives recommendations and provides guidance on methods of dealing with and preventing the entry of water from surrounding ground into a structure below ground level.

What does BS 8102 cover?

BS 8102 on the protection of below ground structures against water covers the use of:

a) Waterproofing barrier materials applied to the structure

b) Structurally integral watertight construction

c) Drained cavity construction.

BS 8102 also covers the evaluation of groundwater conditions, risk assessment, and options for drainage outside the structure. It applies to structures that extend below ground level and those on sloping sites.

BS 8102 does not give recommendations on the use of embedded heating in structures, floors, and walls or for the special requirements in connection with the design and construction of cold stores.

What has changed since the last update?

BS 8102:2009 on the protection of below ground structures against water replaces BS 8102:1990, which is now withdrawn. This is a full revision of the standard, and includes the following changes:

a) A number of recent developments are addressed, which are important when specifying, designing, and constructing below ground structures, including:

1) More deep construction in congested urban areas

2) An increase in the provision of residential basements

3) Development and use of new materials for waterproofing

b) A more detailed assessment is provided of the risks in below-ground construction and how these might best be addressed.

The publication of the Eurocodes and the withdrawal of the corresponding British Standards make this revision very timely.

What are the contents of BS 8102?

BS 8102 on the protection of below ground structures against water contains the following guidance:

• Foreword
• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Design philosophy
• 5 Site evaluation
• 6 Water-resisting design
• 7 General construction issues
• 8 Type A (barrier) protection
• 9 Type B (structurally integral) protection
• 10 Type C (drained) protection
• 11 Remedial measures
• Bibliography
• List of figures
• Figure 1 – Design flowchart
• Figure 2 – Schematic illustrations of Type A, Type B and Type C waterproofing protection
• Figure 3 – Sub-surface drainage positioning
• Figure 4 – Effect of structure on applied waterproofing barrier
• Figure 5 – Pile to floor slab junction
• Figure 6 – Effect of bonded or partially bonded barriers
• List of tables
• Table 1 – Use of different protection types based on water table classification
• Table 2 – Grades of waterproofing protection
• Table 3 – Categories of barrier materials