Carpenter . omthis last point draw a line to a. This lastline will be the bottom level tangent, andbecause it is drawn from V and level, it fol-lows that it will be the same hight all alongfrom li to a, which is, as shown, a triflehigher than the third riser. This means that 37 The Carpenlteir the wreath according to this arrangementTtvill be the hight shown from b to b, higherabove the nosing at the newel than at the end?c, where it is shown to be upon the nosing ofthe ninth step. If it is desired that the wreath follow thenosing line of the steps all around the curvefrom c to fl, then the pi
Carpenter . omthis last point draw a line to a. This lastline will be the bottom level tangent, andbecause it is drawn from V and level, it fol-lows that it will be the same hight all alongfrom li to a, which is, as shown, a triflehigher than the third riser. This means that 37 The Carpenlteir the wreath according to this arrangementTtvill be the hight shown from b to b, higherabove the nosing at the newel than at the end?c, where it is shown to be upon the nosing ofthe ninth step. If it is desired that the wreath follow thenosing line of the steps all around the curvefrom c to fl, then the pitch line c V must becontinued beyond the point h, as shown to plumb line from 3 to 4 and revolve 4 to a,as shown by the dotted arc 5. Now connecta wdth h, which will be the level tangenttransferred to the face mold. The angle ath between this line and the pitched tangenth c will be the one required between thetangents of the face mold to square thejoints at each end. To find the major and minor axes draw a. Fig. 66.—Plan, Elevation and Face Mold of the Stretchout Rail at the Starting of theStairway Shown in the Previous Figure. d and the level tangent drawn from d to a,as indicated by the dotted line d a. By thisprocess the hight of the wreath at the newela may be determined at will. To lay out the face mold the bottom leveltangent h a must be transferred to it, asshown from h to a, and it is aceomplishedby drawing a plumb line from a at the newelto w, and from w to the point indicated. Aline is drawn square to the pitch boardtangent c b, as shown from w to m and revolve the point a of the plan to 3,as indicated by the dotted arc 2. Draw a line from the plan center O parallel to theplan level tangent a &, as shown by thedotted line 0 z. This line will be the planof the minor axis. Now draw from s theplumb line z z, and draw z o parallel tothe level tangent b a of the face z o equal in length to 2; O of the line z o will be the minor axis, and bydrawin
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Keywords: ., bookcentury1900, bookdecade1910, bookidcarpenter30u, bookyear1910
