Index

18 May 2011

Pitman's Volume 14 - Segmental Arch


Front Cover of Volume 14
Building Educator
Volume 14


by R Greenhalgh (Ed)

Published by Pitman & Sons Ltd
16th April 1927

No ISBN number

Extract from page 651
Segmental Arch
The procedure is similar to that of the semicircular arch, but as the curve is less than a semicircle, the centre will lie below the springing line

Mark off the rise on the centre line above the springing line, and join this point with the diagonal A B to the springing point, then bisect the line AB


Segmental Arch
Fig. 54 - Volume 14, page 650
The bisector produced will cut the centre line at a point that will be the centre of a curve passing through the points A and B

Proceed with the marking of the voussoirs as described for the semicircular arch. The two outside radial lines will give the skewback, and the mould is obtained in the same manner as for the semicircular arch

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