This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1849 Excerpt: ... lines (taken from the elevation) and perpendiculars are erected, the rake lines and ordinates are drawn, and the face-moulds Fig's. 3, 4, and 5) completed, just as in the foregoing plates, except that the ordinates are at right angles to the rake Jines. (Fig. 6 is a face-mould, with its ordinates drawn so as to form ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1849 Excerpt: ... lines (taken from the elevation) and perpendiculars are erected, the rake lines and ordinates are drawn, and the face-moulds Fig's. 3, 4, and 5) completed, just as in the foregoing plates, except that the ordinates are at right angles to the rake Jines. (Fig. 6 is a face-mould, with its ordinates drawn so as to form an oblique angle with the rake line, and be adapted to the spring of the plank; and Fig. 7 represents the said spring or bevel.) The triangle b a c, (Fig. 12) represents a square step or flyer, and the line c d f, represents a portion of floor at the top of the first flight of steps. The line d e, intercepted between said floor line and the under edge of the convex falling-mould, is equal the half of a c, that is, half the height of a riser; and the rail, after reaching that elevation above the floor, will pass on horizontally till it reaches the foot of the second flight. PLATE 41. In this plate, Fig. 1 is the plan of an elliptical stair, and Fig. 4, a section or semi-elevation of the same. Fig. 3 represents a bearer for supporting the winders; of which bearers Fig. 2 is the plan. Fig. 3 is obtained in the following manner: --At the point c, where the lower side of the plan (Fig. 2) meets the elliptical wall, erect a perpendicular, c 9, equal to the height or stretchout of the risers in as many winding steps as the bearer is intended to support; divide said perpendicular into as many equal parts as there are risers in said steps, and at the points of division, 1, 2, &c., erect perpendiculars of any length; at the point c, c, &c., where the lines representing the division of the steps cut the lower side of Fig. 2, erect perpendiculars, and produce them till they meet, each with each, their corresponding perpendiculars erected onc a: from..
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
New. Trade paperback (US). Glued binding. 302 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.