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[171] Record drawing, 4 November 1814
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Reference number
SM volume 76/42
Purpose
[171] Record drawing, 4 November 1814
Aspect
Plan of part of the timbering of the / new Bake House at Chelsea Hospital
Scale
bar scale
Inscribed
as above
Signed and dated
- E.F., November 4. 1814
Hand
Edward Foxhall (1793-1862, pupil 1812-1821)
Notes
The design for the Bakehouse roof shows a queen post structure with a with flat top. Interestingly this construction form was one that Wren often used, particularly at Chelsea (for the roof over the Great Hall). Soane also used it for his Stables (see SM volume 76/39). This form allows for comparatively steeply sloping sides and low profile roof.
Evidently, Soane had to create a structure with a flat top because it was to support a central chimney. Thus the supporting timbers had to be strong enough to bear the chimney's weight, so scissor braces were used for support across the width of two (of the four) sides between queen posts (as shown on the upper section of SM volume 76/41). The two shorter sides on the plan (this drawing) are those represented.
The lower section SM volume 76/41 shows the two longer spans between queen posts, shown on the plan (this drawing). The lower section of SM volume 76/41 ties the beams in, rather than providing much structural support. It measures about 17 feet across, which is approximate to the longer span between the queen posts shown on this drawing. SM volume 76/43 shows a detail of the roof's corner in plan and elevation.
SM volume 76/44 shows the plan - a two room, one-storey structure. One room was presumably a preparation space (with fireplace) whilst the other would have held the oven. The roof-beam dimensions roughly correspond to the plan.
Evidently, Soane had to create a structure with a flat top because it was to support a central chimney. Thus the supporting timbers had to be strong enough to bear the chimney's weight, so scissor braces were used for support across the width of two (of the four) sides between queen posts (as shown on the upper section of SM volume 76/41). The two shorter sides on the plan (this drawing) are those represented.
The lower section SM volume 76/41 shows the two longer spans between queen posts, shown on the plan (this drawing). The lower section of SM volume 76/41 ties the beams in, rather than providing much structural support. It measures about 17 feet across, which is approximate to the longer span between the queen posts shown on this drawing. SM volume 76/43 shows a detail of the roof's corner in plan and elevation.
SM volume 76/44 shows the plan - a two room, one-storey structure. One room was presumably a preparation space (with fireplace) whilst the other would have held the oven. The roof-beam dimensions roughly correspond to the plan.
Literature
D. Yeomans, The Trussed roof, its history and development, 1992, p.63
Level
Drawing
Digitisation of the Drawings Collection has been made possible through the generosity of the Leon Levy Foundation
If you have any further information about this object, please contact us: drawings@soane.org.uk