A treatise on architecture and building construction . {a) (.b) Fig. 19. strut would weaken the beam too much. Two notches arethen made, each of which should be equal to from one-sixthto one-quarter the depth of the strut, so that the sum of thetwo bearing surfaces a b and dc, at (b)^ is equal to the singlebearing surface ab^ at {a). 40 CARPENTRY. S9 80. The various joints thus far considered have beenfor the purpose of forming a suitable union between twopieces of timber which were in different positions and whichserved different purposes; and with the exception of thesplice joints for sills
A treatise on architecture and building construction . {a) (.b) Fig. 19. strut would weaken the beam too much. Two notches arethen made, each of which should be equal to from one-sixthto one-quarter the depth of the strut, so that the sum of thetwo bearing surfaces a b and dc, at (b)^ is equal to the singlebearing surface ab^ at {a). 40 CARPENTRY. S9 80. The various joints thus far considered have beenfor the purpose of forming a suitable union between twopieces of timber which were in different positions and whichserved different purposes; and with the exception of thesplice joints for sills and plates, shown in Fig. 15, none ofthese joints could be dispensed with by getting the work outof one piece of timber. We will now consider such joints as are for the sole pur-pose of lengthening timbers, in such a manner as will givethe most perfect union, with the least amount of loss instrength. Fig. ao. Fislihift-,—A stud or post may be lengthened, oras it is called, by the addition of an extra piece ofthe required length, the ends being cut
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
