BS 227:1970

Cooperating organizations
Foreword
Specification
1. Scope
2. Material
3. Identification marking
4. Sections
5. Shapes of arches
6. Manufacturing tolerances
7. Freedom from defects
8. Jointing and fishplating
Appendices
A. Approximate equivalents of the metric and imperial
      dimensions relating to Figs. 3 to 14
B. Details of nuts and bolts (imperial sizes)
C. Information to be given with order
Tables
1. Preferred dimensions of arches
2. Details of three-piece arches
3. H-sections
4. Splayed H-sections
Figures
1. Straight-legged arches
2. Splay-legged arches
3-12. Dimensions of arch sections
13. Arch joint and fishplate details for H-sections
14. Arch joint and fishplate details for splayed
      H-sections
15. Details of nuts and bolts (metric sizes)

Materials, physical properties of sections; identification marking of arches; 2- and 3-piece straight-legged and splay-legged arch shapes; joints, fish plates, bolts; preferred arch sizes; mass, dimensions of standard sections.