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Sketch for a proposed cast-iron tunnel
| Year | 1818 |
|---|---|
| Object no. | LDBRU:2017.18 |
| Size | 205mm (w) x 325mm (h) |
| Location | Stored offsite at TLA |
| Acquired | Auction at Bonhams Grants from NHMF, Art Fund, V&A, Friends National Libraries & Trinity Buoy Wharf |
Pen-and-ink engineering drawings for a tunnel in cast iron, dated "10 April 1818", and extensively annotated in French and English by Brunel, with notes on brickwork laid in cement and of the cast iron shell indicating thickness at the crown and sides;
subscribed "The Cast Iron for a Tunnel of this nature will not exceed 200 Tons for every 100 feet run including the
drain".