A treatise on architecture and building construction . ii>*^ Fig. 26. fit and lay the different sizes of stone. This kind of ashlar,when properly executed, presents a pleasing is generally laid up as rock-faced work, but in some Cases,it is tooled or hammer-dressed. It should have no horizon-tal joints more than 4 feet long, and several sizes of stoneshould be used. Fig. 26 shows an ordinary broken ashlarwall, 2 feet thick, the sizes of stone used being 4, 6, 8, 10, 12, 8 MASONRY. 31 and 14 inches in height; a shows the quoins; b^ the differentsizes of ashlar; and c, the stone
A treatise on architecture and building construction . ii>*^ Fig. 26. fit and lay the different sizes of stone. This kind of ashlar,when properly executed, presents a pleasing is generally laid up as rock-faced work, but in some Cases,it is tooled or hammer-dressed. It should have no horizon-tal joints more than 4 feet long, and several sizes of stoneshould be used. Fig. 26 shows an ordinary broken ashlarwall, 2 feet thick, the sizes of stone used being 4, 6, 8, 10, 12, 8 MASONRY. 31 and 14 inches in height; a shows the quoins; b^ the differentsizes of ashlar; and c, the stone or brick backing. Fig. 27 represents the same kind of a wall, using only. Fig. 27. three sizes of stone, 4, 8, and 13 inches in height; a showsan 8-inch quoin; b, a 13-inch stone; and c, the backing. 59. Rancloni Work.—Broken ashlar is often arrangedas shown in Fig. 28, the courses being 18 to 24 inches is called randoni-coiirsed work, for the reason that thestones have broken, or random, joints, and do not breakjoint directly over one another, as in coursed ashlar. Stone-work of this kind is used very often for piers, and makes astrong wall, as all the stones bond well and the perpendicu-lar joints are well broken. In Fig. 28, a indicates the corner stones; b, the randomashlar; <r, the horizontal joints in the stonework; and d^ thestone or brick backing. (50. Laying out Aslilar.—If ashlar in regular coursesand sizes is to be used, drawings should be made showingeach different-sized stone, the heights of the courses, and 32 MASONRY. other necessary details. The plans for public and officebuildings, etc., usually show every stone, unless bro
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