## An Encyclopaedia of Architecture, Historical, Theoretical, and Practical |

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Page 342

lines at its extremities bears corresponding points of the curve ; then the line DE

will be loaded with all these weights ; and as the portions of the curve which

answer to each parallel AB go on increasing as they approach D , the

lines at its extremities bears corresponding points of the curve ; then the line DE

will be loaded with all these weights ; and as the portions of the curve which

answer to each parallel AB go on increasing as they approach D , the

**centre**of ...Page 343

The quotient is the distance CG from the

gravity of the sector . 1279. To find the

arch DAEBF ( fig . 540. ) comprised between two concentric axes , we must 1.

The quotient is the distance CG from the

**centre**C of the circle of the**centre**ofgravity of the sector . 1279. To find the

**centre**of gravity of the crown portion of anarch DAEBF ( fig . 540. ) comprised between two concentric axes , we must 1.

Page 344

The

radius from the

fig . 544. ) is found by the following proportion : as thrice the radius less the

thickness ...

The

**centre**of gravity of a hemisphere is at the distance of three eighths of theradius from the

**centre**. 1287. The**centre**of gravity of the segment of a sphere (fig . 544. ) is found by the following proportion : as thrice the radius less the

thickness ...

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angle appears arch architect architecture base beam becomes bricks building built called cathedral centre century church circle colour columns common considered construction contains course covered curve depth describe diameter direction divided draw edifices effect employed equal erected examples experiments extremely face feet figure force four front give given greater half height horizontal houses inches iron Italy joints length less lime material means middle mouldings nearly necessary observed obtained parallel period perpendicular piece placed plane portion practice principal produced Prop proportion quarries radius remains respect Roman roof round says side similar solid square stone strength style supposed surface temple thickness timber tower triangle upper vault vertical walls whereof whole wood