Agriculture Reference
In-Depth Information
Figure 109
Drawing of a gauged
niche depicting its
parts.
Their construction follows a similar theme of squared or 'mop-staff' cut-
moulded jambs, or alternatively with cut-moulded architrave leading into the
curved body of the niches. The body of each niche is terminated with project-
ing plain or cut-moulded 'necking' courses on which rest the 'hood', set-back
to follow the original line of the body. The hoods are all constructed of radial
voussoirs to follow the bond and detailing of the body.
It is impossible to cut hood voussoirs to the wafer-like thinness at the extreme
of the striking point from which they all radiate. A brick (or frequently several
courses of set bricks) is thus hand-shaped as a miniature hood and rubbed to the
same curve. This element, the 'boss' - is frequently, though not always, set-out
by the rule of one-third of that of the overall radius of the hood - and all vous-
soirs abut to it. Almost all of the De Waag bosses have a small projection to facili-
tate carving with variations of the scallop-shell motif. Sometimes the bricklayers
