. Cyclopedia of architecture, carpentry, and building : a general reference work. Fig. IIH, Constructionof Arch. Fig. Hi). Solid SkewbacUs. 2. Use the largest stones for the foundation course. 3. I^ay all stones which consist of layers in such a manner thatthe principal pressure which they have to bear shall act in a direction 140 BVLLDHsU SUi^il^KliNTiilJNJDENCJl. i:jl. Fig. 150. Flat Aivh of Stone. perpendicular, or as nearly so as possible, to the direction of the layers. This is called laying the stone on its natural bed, and is of primary importance for strength and durability. 4. Moisten
. Cyclopedia of architecture, carpentry, and building : a general reference work. Fig. IIH, Constructionof Arch. Fig. Hi). Solid SkewbacUs. 2. Use the largest stones for the foundation course. 3. I^ay all stones which consist of layers in such a manner thatthe principal pressure which they have to bear shall act in a direction 140 BVLLDHsU SUi^il^KliNTiilJNJDENCJl. i:jl. Fig. 150. Flat Aivh of Stone. perpendicular, or as nearly so as possible, to the direction of the layers. This is called laying the stone on its natural bed, and is of primary importance for strength and durability. 4. Moisten the surface of dry and porous stones before bedding them, in order that the mortar may not l)e dried too and reduced to powder by the stone absorbing its moisture. o. Fill every part of every joint, and all spaces between the stones, Tv^th mortar, taking care at the same time that such spaces shall be as small as possible. 6. The rougher the stones, the better the mortar should be. The principal object of the mortar is to equalize the pressure; and the more nearly the stones are dressed to closely fitting surfaces, the less important is the mortar. Not infrequently, this rule is exactly reversed; , the finer the dressing, the better the quality of the mortar used. All projecting courses, such as sills and lintels, should be covered with boards, bagging
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