The carpenter's new guide: being a complete book of lines for carpentry and joinery (1850)
Nicholson, Peter, 1765-1844. [from old catalog], Johnston, William, architect. [from old catalog] · Philadelphia, Lippincott, Grambo and co. · leaf 85
A fl^ik 23. … i^. /I1.3 m. CRADLING TO GROINS. 35 PLATE 23. Jl CYimDRO-CYLIADRIC ARCH. DEFINITION. A cylindro-cylindnc arch or Welsh groin is an under pitch groin, whose side and body arches are both givensemicircles, or they may be si7nilar segments of circles cutting through one another, whose intersections…
Carpentry
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