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The Crystal Palace grid of 24 feet

Build on a single grid of 24 feet, set by the 8-foot spacing of the roof ridges and the size of the largest pane of glass, so that every column, girder, sash bar and pane is one of a few standard parts that can be made by machine, delivered and bolted together in any number.

pane 49 × 10 in · ridge 8 ft · bay 24 ft · spans 24, 48, 72 ft · 1,848 × 408 ft

The Crystal Palace on its 24-foot grid. Switch the site to Sydenham to see it rebuilt on its terraces. Open in Models ↗

The Crystal Palace was designed from its smallest part upwards. Chance Brothers could make panes of sheet glass 49 inches long; set diagonally in the ridge-and-furrow roof, they gave ridges 8 feet apart; three ridges made a bay of 24 feet. The columns stood on that grid, and the girders came in lengths of 24, 48 and 72 feet to span one, two or three bays. The nave was 72 feet wide, the aisles stepped down on either side, and the whole was 1,848 feet long and 408 feet wide. The transept, 72 feet wide and 108 feet high under a timber-ribbed vault, was added so that a row of elms on the site could stay inside.

Because the parts were few and identical, they could be made in factories while the foundations were laid, and assembled at great speed; and because the building was a kit, it could be taken down after the Exhibition closed in October 1851 and re-erected, enlarged, at Sydenham, where it opened in June 1854. There it stood, with a barrel-vaulted nave and three transepts, above Paxton’s terraces and fountains, until it burned down in November 1936.

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Cite this page Chris Paton, “The Crystal Palace grid of 24 feet”, The Textbook of Architecture, https://textbookofarchitecture.com/rule/crystal-palace-module. Text, drawings and models licensed under CC BY-NC 4.0.