Underframe
AssemblyWelded steel center sill chassis carrying the body and transferring buff and draft loads through the bolsters to the bogies. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Underframe
8 top-level lines as of r17707| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Center Sill | boxcar-center-sill | 1× | 1 | · | part |
| 2 | Side Sill | boxcar-side-sill | 2× | 2 | · | part |
| 3 | Body Bolster | boxcar-body-bolster | 2× | 2 | · | part |
| 4 | Cross Bearer | boxcar-cross-bearer | 6× | 6 | · | part |
| 5 | Floor Stringer | boxcar-stringer | 8× | 8 | · | part |
| 6 | Draft Sill | boxcar-draft-sill | 2× | 2 | · | part |
| 7 | Car Floor | boxcar-floor | 1× | 1 | · | part |
| 8 | Fastener Set | fastener-set | 6× | 6 | · | part |