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|Building width and bay width
- Building width is measured in bays. The maximum width of a ting
tang is 9 bays.
- Bay width. A bay has one bracket set on the column (a
columnar set) and either one or two sets between the columns (intercolumnar
bracket sets). The centre-to-centre spacing of bracket sets is 125 fen
+/- 25 fen; thus the width of a bay with one intercolumnar
set is 250 fen +/- 50 fen, and with two intercolumnar sets
is 375 fen +/- 75 fen. This gives a total range of 200-450
fen. The centre bay is often wider. In addition, in most extant
examples the two outer bays are slightly smaller than the others.
Our sample building is 3 bays wide; the outer bays are 200 fen
wide; the centre bay is 250 fen wide. Thus the width of the building
is (200 + 250 +200) fen = 650 fen. At the 6th grade, 1 fen
= 12.8 mm; thus the building is 650 x 12.8 mm = 8320 mm wide. (See illustration.)
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