The Architectural magazine . xperiment fig. 149.,p. 4)10., when the pier is reduced in its height to one half, thearch and pier will carry twice the weight of the pier. A straightline may also be drawn from atod {Jig. 59.), which nearly fallswithin the voussoirs. Moreover, the pier 6 c is farther strength-ened by a cross wall. All these circumstances being considered,this fabric is capable of supporting a great weight on a. Thetest of experiment proved the arch and pier to stand firm underthe weight of 60 lb. placed at a ; consequently, they would carrymore: but this was a sufficient test of s
The Architectural magazine . xperiment fig. 149.,p. 4)10., when the pier is reduced in its height to one half, thearch and pier will carry twice the weight of the pier. A straightline may also be drawn from atod {Jig. 59.), which nearly fallswithin the voussoirs. Moreover, the pier 6 c is farther strength-ened by a cross wall. All these circumstances being considered,this fabric is capable of supporting a great weight on a. Thetest of experiment proved the arch and pier to stand firm underthe weight of 60 lb. placed at a ; consequently, they would carrymore: but this was a sufficient test of strength ; and this weightof 60 lb. equalled twenty times the weight of the small pier. Fig. 60. represents an eastern window of Newington span of the arch is 8 ft. The height of the window to thespring of the arch is 7^ ft. The height of the masonry fromthe ground to the bottom of the window is 8 ft. The walls oneach side of the window are 6^ ft. The depth of the buttressis 4 ft. u 2 292 Principles of Conslniciion. The masonry of this window exhibits the straight Hne a djust touching the intrados, and the straight hne c d within themasonry; consequently, this fabric will support almost any weighton c, and, therefore, will never fall of itself. Its present appear-ance confirms this, since it looks as strong as when first erected. Sittitigboiirne Church. — The engraving ^.61. representsone side of this church : g is the tower wall ; and h the crosswalls, &c. The span of the arch is l-ift. Sin. The heightof the piers, 11 ft. 2 in. The shaft of the pier, 8 ft. 8 in. Thediameter of each pier, 24 in. The thickness of the masonryon the arches, 2 ft. 9 in. The height of the masonry above thearches, 4 ft. The piers are, in form, circular and octagonal alter-nately. In 14ft. Sin. there are 171 in., which, divided by 6, gives28^ in. for the true diameter of the pier: but the pier is only24) in. in diameter; therefore it is 4^ in. within the balancingpoint. It has been before
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Keywords: ., bookcentury1800, bookdecad, booksubjectarchitecture, bookyear1834
