Rudimentary Treatise on the Erection of Dwelling-houses; Or, The Builder's Comprehensive Director: Explained by a Perspective View, Plans, Elevations, and Sections of a Pair of Semi-detached Villas ...

Forside
J. Weale, 1860 - 206 sider
 

Andre utgaver - Vis alle

Vanlige uttrykk og setninger

Populære avsnitt

Side 75 - Another but adjoining edge of the paper must, next, be acted upon in like manner, and then the remaining edges in succession ; we say the adjoining edges, because we have occasionally observed that, when the opposite and parallel edges have been laid down first, without continuing the process progressively round the board, a greater degree of care is required to prevent undulations in the paper as it dries. Sometimes strong paste is used instead of glue ; but, as this takes a longer time to set,...
Side 203 - ... of the given circle (which is always equal to the side of an inscribed hexagon) as the transverse distance of 6 and 6, upon the line of polygons. Then the transverse distance of 4 and 4 will be the side of a square ; the transverse distance between 5 and 5, the side of a pentagon ; between 7 and...
Side 196 - When a measure is taken on any of the sectoral lines beginning at the center, it is called a lateral distance ; but, when a measure is taken from any point on one line to its corresponding point on the line of the same denomination on the other leg, it is called a transverse or parallel distance. The divisions of each sectoral line are contained within three parallel lines, the innermost being the line on which the points of the compasses are to be placed, because this is the only line of the three...
Side 205 - Given the Length' of the Sine, Tangent, or Secant of any Degrees, to find the Length of the Radius to that Sine, Tangent, or Secant. — Make the given length a transverse distance to its given degrees on its respective scale. Then, To find the Length of a versed Sine, to a given Number of Degrees, and a given Radius.
Side 15 - The proportion of mortar or cement, when made up, to the lime or cement and sand before made up is as 2 to 3. Lime or cement and sand to make mortar require as much water as is equal to one-third of their bulk. A...
Side 30 - ... square timbers connected by bolts and dog irons. The. hoisting of the materials is performed from these scaffolds by means of a travelling crane, which consists of a double travelling carriage running on a tramway formed on, stout sills laid on the top of two parallel rows of standards. The crab-winch is placed on the upper carriage, and, by means of the double motion of the two carriages, can be brought with great ease and precision over any part of the work lying between the two rows of standards....
Side 76 - In mounting paper upon canvas, the latter should be well stretched upon a smooth flat surface, being damped for that purpose, and its edges glued down, as was recommended in stretching drawing paper. Then with a brush spread strong paste upon the canvas, beating it in till the grain of the canvas be all filled up ; for this, when dry, will prevent the canvas from shrinking when subsequently removed...
Side 76 - ... having cut the edges of the paper straight, paste one side of every sheet, and lay them upon the canvas, sheet by sheet, overlapping each other a small quantity. If the drawing paper is strong, it is best to let every sheet lie five or six minutes after the paste is put on it ; for, as the paste soaks in, the paper will stretch, and may be better spread smooth upon the canvas ; whereas, if it be laid on before the paste has moistened the paper, it will stretch afterwards and rise in blisters...
Side 183 - The centre of the instrument is represented by the intersection of two lines drawn at right angles to each other on a piece of plate glass, which enables the person using it to place it so that the centre, or intersection of the cross lines, may coincide with any given point on the plan. If the instrument is in correct order, a line connecting the fine pricking points with each other would pass through the centre of the instrument, as denoted by the -before-mentioned intersection of the cross...
Side 68 - ... to receive the priming coat. This is composed of red and white lead, well diluted with linseed oil. The nail holes and other imperfections are then stopped with putty, and the succeeding coats are laid on, the work being rubbed down between each coat, to bring it to an even surface. The first coat after the priming is mixed with linseed oil and a little turpentine ; the second coat with equal quantities of linseed oil and turpentine. In laying on the second coat, where the work is not to be finished...

Bibliografisk informasjon