How does one consider the moment capacity of a combined pipe plus H-section if the infill material is:
- Sand, friction angle 30 degree
- Grout, C20
- Concrete, C45
Eurocode has a section on composite design, which requires use of shear connectors. Where shear connectors are not feasible due to lack of space, can bearing of infill material be relied on for moment transfer? For example, what would be the moment capacities of a 600mm outer diameter pipe section with 10mm thick wall containing a 300x300mm H-section with 25mm thick flange and 16mm thick web, both grade S355 steel, based on each of the three infill materials?