The document contains technical drawings and descriptions of various masonry arch structures including: - A semicircular masonry arch with a 3m span and 0.51m thickness - An equilateral masonry arch with a 3m span and 0.51m thickness - A segmental masonry arch with a 3m span and 0.51m thickness - An elliptical masonry arch with a 4.2m span and 0.64m thickness - Instructions to draw the elevation of the elliptical arch to a scale of 1:25 - Instructions to draw the elevation of a 1200 segmental arch with a 5m span and 0.64m thickness -

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o senicircular mssofiry archi,, span: J.00 m., tiickness : O.sI n
Equilateral masonry arch, span = 3.00 m., thichness : 0.sI m.
' r.qyuaterutr m$sonry arcfi, span= 3.00 m",lhicltness: 0.51 m.
. 9f segmental masonry orch, span - 3.00 rit., thiickness: G.SI nt
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Drstp ,teat sketclt with brief comments sltowitrg the
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