Primary beam
AssemblyStiff timber or aluminium girder spanning the U-heads to carry the secondary joists. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Primary beam
3 top-level lines as of r154352| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Primary beam body | st-primary-beam-web | 1× | 1 | · | part |
| 2 | Beam end cap | st-beam-end-cap | 2× | 2 | · | part |
| 3 | Beam nail plate | st-beam-nail-plate | 4× | 4 | · | part |