The builder's practical director; or, Buildings for all classes, containing plans, sections and elevations for the erection of cottages, villas, farm buildings, dispensaries, public schools, &c., with detailed estimates, quantities, prices, &c. .. (1855)
Leipzig, Dresden : A. H. Payne; [etc., etc.] · leaf 162
f the ceiling. Two iron plates, witli studs, are to be screwed upon tiie upper edge of the sides of thestep-ladder, about IH inches from the top cud or lianging part, to receive tlie eyes of theiron bar struts, which fasten the trap door. This will be better imdcrstood by the f(dlowing diagrams. *… … ;fefc;l-|;i:t;::j^^F^£A !k--l!i^t/cL^fcfl^aiE!l^:!ls^
Architecture
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