. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. th the choir and nave. The eight piers are joined by arches springing froione to the other so as to form an octagon at their springing points, and the angles betweethe arches, instead of rising vertically, sail over as they rise and form ])eni/eiitiv(s, whiclead, at their top, into a circle on the plan. Above this a wall rises in the form of a truieated cone, which, at the height of 168 ft. from the pavement, terminates in a horizont;cornice, from w
. An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth. th the choir and nave. The eight piers are joined by arches springing froione to the other so as to form an octagon at their springing points, and the angles betweethe arches, instead of rising vertically, sail over as they rise and form ])eni/eiitiv(s, whiclead, at their top, into a circle on the plan. Above this a wall rises in the form of a truieated cone, which, at the height of 168 ft. from the pavement, terminates in a horizont;cornice, from which the interior dome springs. Its diameter is 100 ft., and it is 60 ft. iheight, in the form of a paraboloid. Its thickness is 18 in., and it is constructed of briclwork. From the haunches of this dome, 200 ft. above the pavement of the church, anotlucone of brickwork commences, 85 ft. high, and 94 ft. diameter at the bottom. This coiis pierced with apertures, as well for the ])iir])ose of diminishing its weight as for distrbuting light between it and the outer dome. .\t the to)) it is gathered into a dome, in tl 111. JAMES I. TO ANNL ?r-. form of ;i liypcrboloid, ])ierce(l near tlie vertex witli an ajierture 12 ft. in diameter. lietop of tliis cone is 285 ft. from tlie jiavement, and carries a lantern 55 ft. liigli, termiiiatiiij;in a dome, wliereon a ball and cross is raised. Ilie last-named cone is provided withcorbels, sufficient in number to receive tile hammer beams of tiie external dome, which isof oak, and its base 220 ft. from the pavement, its summit being level with the top of tiiecone. In form, it is nearly hemispherical, and generated by radii 57 ft. in length, whosecentres are in a Iiorizontal diameter, passing through its base. The cone and the interiordome are restrained in their lateral thrust on the su))i)orts by four tiers of strong ironchains, ])laced in grooves prei)ared for their reception, and run with lead. The lowestof these is inserted in tlie masonr
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Keywords: ., bookcentury1800, booksubjectarchitects, booksubjectarchitecture
