[Gould, Lucius D.], b. 1814. [from old catalog] · New York, W.T. Comstock · leaf 15
omthe point D as a centre, with A B as a radius, describe anarc cutting the major axis in the points 2 and 3 ; place pins-in the points ; by the use of thread or cord and pencil,describe the centre curve ; set off each way from D equalhalf the width of rail ; from the points describe the outsideand… … SCALE 3 IN. = 1 FOOT STAIR BUILDING. II PLATE IV Exhibits the plan of a round rail^ on a four-inch cylinder atthe landing. To find the length of curve required for the easing orwreath : Square up from A to B equal the riser ; from thecentre of baluster, draw D E equal half the riser ; draw E Cat…
Stair building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
