1. PD 6609:2007. Environmental cleanliness in enclosed spaces – Guide to in situ high efficiency filter leak testing

2. PD 6680:2002. Guidance on the new European Standards for thermal insulation materials

3. PD 6682-1:2009 + A1:2013. Aggregates - Part 1: Aggregates for concrete – Guidance on the use of BS EN 12620.

4. PD 6682-2:2009 + A1:2013. Aggregates - Part 2: Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas – Guidance on the use of BS EN 13043

5. PD 6682-6:2009 + A1:2013. Aggregates - Part 6: Aggregates for unbound and hydraulically bound materials for use in civil engineering works and road construction – Guidance on the use of BS EN 13242

6. PD 6682-7:2003. Aggregates - Part 7: Armourstone - Guidance on the use of BS EN 13383

7. PD 6682-8:2004. Aggregates - Part 8: Aggregates for railway ballast - uidance on the use of BS EN 13450

8. PD 6687-2:2008. Recommendations for the design of structures to BS EN 1992-22005

9. PD 6688-1-1:2011. Recommendations for the design of structures to BS EN 1991-1-1

10. PD 6688-1-2:2007. Background paper to the UK National Annex to BS EN 1991-1-2