MODEL DESIGNS FOR FARMERIES. 812 395 813 ir II .1 I t I I n I I ir II If m J^W -1UUJ4 JUlM. mum jnnn unnn fflH ^ 776. In the Con- struction of the Corn Barn at Celle, the object was to enclose a space fifty-five feet long, twenty-two feet broad, and twenty- two feet high, without taking into calcula- tion the space con- tained in the angle of the roof, which was eleven feet high in the centre, the angle of the side being at forty-five degrees, for the better throw- ing off of the rain. Numbers divisible by 11 were made choice of, because experience has shown that eleven feet is the maximum of length which can be given to beams placed horizontally, without risking their bending. The fifty-five feet of length are therefore divided into five bays, which are contained between six frames of carpentry, placed eleven feet apart, and of which two form the gables at each extremity. Eighteen founda. tions of masonry are built in the angles of ten squares (see fig. 808), each eleven feet on ^/v^^ the side, and carried up fifteen inches above the surface, in order to support eighteen stone plinths, on which are placed eighteen oak posts, two feet high and one foot square, fixed to the stone by oak pins one inch square and two inches long, which are let half way into the post and halfway into the stone, with tenons at their upper extremities for being mortised into the sleepers. By these means the eighteen pillars are raised to the height of three feet from the surface of the ground ; the two lower feet are covered with slates, as shown in fig. 814 from i to k, and the foot immediately under the joists is covered with twelve panes of window glass, each a foot square, retained in their places by two small fillets of wood at k and 1, to which they are cemented at the upper and lower edges only, and without any finishing at the angles. The glass is to prevent the ascent of rats. r 814 12. 7
