. Cyclopedia of architecture, carpentry, and building; a general reference work ... DirectiTig Ordinate ^ ^ Of Section ^^ \ ^\ »^ Directing OrdinateOf Base Fig. 119. Laying Out Curves on Face-Mould with Pins and String. case the bottom tangent a is to be a level tangent. Probably thiscondition is the most commonly met with in wreath construction atthe present time. A small curve is considered to add to the appear-ance of the stair and rail; and consequently it has become almost afad to have a little curve or stretch-out at the bottom of the stairway,and in most cases the rail is ramped to inte
. Cyclopedia of architecture, carpentry, and building; a general reference work ... DirectiTig Ordinate ^ ^ Of Section ^^ \ ^\ »^ Directing OrdinateOf Base Fig. 119. Laying Out Curves on Face-Mould with Pins and String. case the bottom tangent a is to be a level tangent. Probably thiscondition is the most commonly met with in wreath construction atthe present time. A small curve is considered to add to the appear-ance of the stair and rail; and consequently it has become almost afad to have a little curve or stretch-out at the bottom of the stairway,and in most cases the rail is ramped to intersect the newel at rightangles instead of at the pitch of the flight. In such a case, the bottomtangent a will have to be a level tangent, as shown at a in Fig. 115,the pitch of the flight being over the plan tangent b only. 329 66 STAIR-BUILDING. Fig. 120. Simple Method of Drawing Curveson Face-Mould. To find the bevels when tangent h indines and tangent a islevel, make a c in Fig. 116 equal to a c in Fig. 115. This line will be the base of the two a, erect the line a w mat right angles to a c; make aw equal to b ly in Fig. 115; con-nect w and c; the bevel at wwill be the one to apply to tan-gent b at n where the wreathis joined to the rail of the , make a m in Fig. 116equal the distance shown in between w and m, which isthe full height over which tan-gent b is inclined; connect m toc in Fig. 116, and at m is the bevel to be applied to the level tangent a. Seventh this case, illus-trated in Fig. 117,the upper tangentb is shown to in-cline, and the bot-tom tangent a tobe level, over anacute - angle plan here isthe same as that inFig. 100, where acurve is shown tostretch out from theline of the straightstringer at the bot-tom of a flight to anewel, and is largeenough to containfiv
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