A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . Condon /!,/,/,:,-/„?,//,,? /?/,,„„„* /;?„,/. 7:i. fhra,>*i:ir S,;,t://.i:. ( A R I K >T R V, FinlS. /?•,,,. r/,„,„„.< ?r,„„,T:\r/,,l,,,.-.;,i,!<:. CARPENTRY. 185 The strutting of a floor is of great use when thejoists are thin and deep, in preventing their buck-ling pressure; but for this purpose ther
A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . Condon /!,/,/,:,-/„?,//,,? /?/,,„„„* /;?„,/. 7:i. fhra,>*i:ir S,;,t://.i:. ( A R I K >T R V, FinlS. /?•,,,. r/,„,„„.< ?r,„„,T:\r/,,l,,,.-.;,i,!<:. CARPENTRY. 185 The strutting of a floor is of great use when thejoists are thin and deep, in preventing their buck-ling pressure; but for this purpose there isanothermethod called keying, which consists in framingshort pieces of timber between the joists ; but asthe mortises which receive the tenons weaken thejoists, and as the keys cannot be in a straight line,and since this method adds considerably to theexpense, this practice is not so eligible as thatof strutting. Single joist flooring may be usedto any extent not exceeding sixteen feet; butwhen it is desirable to preserve the ceiling freefrom cracks, and to prevent the passage of sound,a framed floor is necessary. The ceiling joists in double floors are gene-rally put in after the building is up ; if, therefore,they are fixed by means of mortises in the sidesof the binding joists, to relieve tenons on theirends, the space between every other two m
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Keywords: ., bookcentury1800, bookdecade, booksubjectaeronautics, bookyear1829
